./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:00:33,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:00:33,320 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:00:33,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:00:33,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:00:33,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:00:33,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:00:33,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:00:33,350 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:00:33,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:00:33,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:00:33,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:00:33,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:00:33,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:00:33,355 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:00:33,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:00:33,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:00:33,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:00:33,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:00:33,356 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:00:33,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:00:33,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:00:33,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:00:33,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:00:33,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:00:33,359 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:00:33,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:00:33,359 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:00:33,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:00:33,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:00:33,361 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:00:33,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:00:33,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:33,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:00:33,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:00:33,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:00:33,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:00:33,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:00:33,363 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:00:33,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:00:33,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:00:33,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:00:33,595 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:00:33,596 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:00:33,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:34,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:00:35,016 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:00:35,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:35,029 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a173deaa1/e6e0b5f9e9f94e109624225acb77e1e4/FLAGba5047813 [2024-06-28 00:00:35,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a173deaa1/e6e0b5f9e9f94e109624225acb77e1e4 [2024-06-28 00:00:35,047 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:00:35,047 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:00:35,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 00:00:35,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:00:35,127 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:00:35,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:35,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:00:35,131 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:00:35,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:35" (1/2) ... [2024-06-28 00:00:35,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e65cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:35, skipping insertion in model container [2024-06-28 00:00:35,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:00:35" (1/2) ... [2024-06-28 00:00:35,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c56b362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:00:35, skipping insertion in model container [2024-06-28 00:00:35,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:35" (2/2) ... [2024-06-28 00:00:35,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e65cf3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35, skipping insertion in model container [2024-06-28 00:00:35,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:35" (2/2) ... [2024-06-28 00:00:35,137 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:00:35,162 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:00:35,164 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )z >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )z >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )z >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:00:35,164 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )z >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )z >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )z >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-28 00:00:35,164 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:00:35,165 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-28 00:00:35,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:00:35,537 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:35,544 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:00:35,668 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:00:35,698 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:00:35,698 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35 WrapperNode [2024-06-28 00:00:35,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:00:35,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:35,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:00:35,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:00:35,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,773 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-28 00:00:35,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:00:35,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:00:35,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:00:35,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:00:35,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,840 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:00:35,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,853 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:00:35,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:00:35,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:00:35,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:00:35,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (1/1) ... [2024-06-28 00:00:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:00:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:00:35,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:00:35,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:00:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:00:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:00:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:00:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:00:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:00:35,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:00:35,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:00:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:00:35,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:00:35,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:00:35,978 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:00:36,093 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:00:36,094 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:00:36,480 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:00:36,481 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:00:36,593 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:00:36,594 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:00:36,594 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:36 BoogieIcfgContainer [2024-06-28 00:00:36,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:00:36,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:00:36,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:00:36,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:00:36,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:00:35" (1/4) ... [2024-06-28 00:00:36,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782bff16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:00:36, skipping insertion in model container [2024-06-28 00:00:36,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:00:35" (2/4) ... [2024-06-28 00:00:36,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782bff16 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:36, skipping insertion in model container [2024-06-28 00:00:36,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:00:35" (3/4) ... [2024-06-28 00:00:36,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782bff16 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:00:36, skipping insertion in model container [2024-06-28 00:00:36,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:00:36" (4/4) ... [2024-06-28 00:00:36,601 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 00:00:36,613 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:00:36,614 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:00:36,614 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:00:36,649 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:00:36,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:36,695 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 00:00:36,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:36,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:00:36,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 00:00:36,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 00:00:36,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:00:36,710 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f3cb978, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:00:36,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:00:36,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:00:36,714 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:00:36,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:00:36,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:36,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:00:36,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:36,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:36,723 INFO L85 PathProgramCache]: Analyzing trace with hash 332828771, now seen corresponding path program 1 times [2024-06-28 00:00:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896422655] [2024-06-28 00:00:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:38,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896422655] [2024-06-28 00:00:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896422655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:38,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:38,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:00:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478286644] [2024-06-28 00:00:38,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:38,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:00:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:00:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:00:38,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:00:38,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:38,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:38,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:00:38,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:38,674 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-28 00:00:38,675 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:00:38,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 351 events. 189/351 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1290 event pairs, 115 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-28 00:00:38,681 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 00:00:38,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-28 00:00:38,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:00:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:00:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-28 00:00:38,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 00:00:38,694 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-28 00:00:38,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-28 00:00:38,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:38,698 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:38,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 00:00:38,703 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 00:00:38,703 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 00:00:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:38,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:38,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:00:38,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:38,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2020889858, now seen corresponding path program 1 times [2024-06-28 00:00:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69288028] [2024-06-28 00:00:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69288028] [2024-06-28 00:00:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69288028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:00:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166748335] [2024-06-28 00:00:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:39,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:00:39,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:39,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:00:39,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:00:39,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:00:39,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:39,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:39,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:00:39,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:40,032 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-28 00:00:40,033 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-28 00:00:40,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 94 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-28 00:00:40,037 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 00:00:40,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 00:00:40,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:00:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:00:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-28 00:00:40,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-28 00:00:40,039 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-28 00:00:40,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 00:00:40,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:00:40,041 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:40,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 00:00:40,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 00:00:40,042 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 00:00:40,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:40,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:40,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:40,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:00:40,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:40,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:40,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1776923130, now seen corresponding path program 1 times [2024-06-28 00:00:40,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:40,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152062985] [2024-06-28 00:00:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:40,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:40,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152062985] [2024-06-28 00:00:40,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152062985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:40,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:40,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:00:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359174612] [2024-06-28 00:00:40,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:00:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:40,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:00:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:00:40,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:00:40,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:40,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:40,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:00:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:41,121 INFO L124 PetriNetUnfolderBase]: 187/354 cut-off events. [2024-06-28 00:00:41,122 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-28 00:00:41,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 354 events. 187/354 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 67 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-28 00:00:41,125 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 00:00:41,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 251 flow [2024-06-28 00:00:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:00:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:00:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 00:00:41,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 00:00:41,128 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 90 transitions. [2024-06-28 00:00:41,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 251 flow [2024-06-28 00:00:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:41,131 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-28 00:00:41,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-28 00:00:41,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 00:00:41,132 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-28 00:00:41,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:41,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:41,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:41,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:00:41,133 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:41,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1414893681, now seen corresponding path program 1 times [2024-06-28 00:00:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142501670] [2024-06-28 00:00:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142501670] [2024-06-28 00:00:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142501670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:42,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:42,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175449083] [2024-06-28 00:00:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:42,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:42,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:42,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:00:42,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:42,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:42,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:00:42,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:42,764 INFO L124 PetriNetUnfolderBase]: 188/356 cut-off events. [2024-06-28 00:00:42,766 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-28 00:00:42,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 356 events. 188/356 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 46 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-28 00:00:42,771 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2024-06-28 00:00:42,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 338 flow [2024-06-28 00:00:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 00:00:42,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-28 00:00:42,777 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 7 states and 109 transitions. [2024-06-28 00:00:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 338 flow [2024-06-28 00:00:42,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 334 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:00:42,783 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 216 flow [2024-06-28 00:00:42,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-28 00:00:42,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 00:00:42,785 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 216 flow [2024-06-28 00:00:42,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:42,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:42,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:00:42,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:42,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1773879685, now seen corresponding path program 1 times [2024-06-28 00:00:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848084474] [2024-06-28 00:00:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:44,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:44,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848084474] [2024-06-28 00:00:44,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848084474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570582177] [2024-06-28 00:00:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:44,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:44,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 00:00:44,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:44,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:44,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 00:00:44,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:44,507 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-28 00:00:44,507 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-28 00:00:44,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 359 events. 189/359 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1326 event pairs, 24 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-28 00:00:44,509 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-28 00:00:44,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 384 flow [2024-06-28 00:00:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:00:44,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-28 00:00:44,516 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 216 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:00:44,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 384 flow [2024-06-28 00:00:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 350 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:44,518 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-28 00:00:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-28 00:00:44,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 00:00:44,528 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-28 00:00:44,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:44,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:44,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:44,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:00:44,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:44,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1502486617, now seen corresponding path program 1 times [2024-06-28 00:00:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:44,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479128513] [2024-06-28 00:00:44,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479128513] [2024-06-28 00:00:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479128513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:45,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:45,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:00:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909915559] [2024-06-28 00:00:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:00:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:00:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:00:46,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:46,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:46,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:46,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:46,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:46,369 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-28 00:00:46,370 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-28 00:00:46,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 355 events. 187/355 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1302 event pairs, 47 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-28 00:00:46,374 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-28 00:00:46,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 323 flow [2024-06-28 00:00:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:00:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:00:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-28 00:00:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:00:46,376 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 65 transitions. [2024-06-28 00:00:46,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 323 flow [2024-06-28 00:00:46,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 280 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:46,379 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 214 flow [2024-06-28 00:00:46,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-28 00:00:46,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-28 00:00:46,382 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 214 flow [2024-06-28 00:00:46,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:46,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:46,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:46,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:00:46,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:46,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash -696182331, now seen corresponding path program 1 times [2024-06-28 00:00:46,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059500816] [2024-06-28 00:00:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:48,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:48,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059500816] [2024-06-28 00:00:48,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059500816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:48,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:48,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:48,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476997439] [2024-06-28 00:00:48,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:48,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:48,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:48,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:48,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:48,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:48,607 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-28 00:00:48,607 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-06-28 00:00:48,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 382 events. 212/382 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1347 event pairs, 55 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1309. Up to 368 conditions per place. [2024-06-28 00:00:48,610 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-28 00:00:48,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 324 flow [2024-06-28 00:00:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:48,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 00:00:48,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:00:48,612 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 214 flow. Second operand 6 states and 70 transitions. [2024-06-28 00:00:48,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 324 flow [2024-06-28 00:00:48,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 313 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:48,615 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 242 flow [2024-06-28 00:00:48,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-28 00:00:48,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-28 00:00:48,616 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 242 flow [2024-06-28 00:00:48,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:48,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:48,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:00:48,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:48,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash -112536618, now seen corresponding path program 1 times [2024-06-28 00:00:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173506971] [2024-06-28 00:00:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:49,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173506971] [2024-06-28 00:00:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173506971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:49,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:49,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:49,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053550632] [2024-06-28 00:00:49,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:49,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:49,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:49,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:49,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:49,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:49,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:49,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:49,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:50,198 INFO L124 PetriNetUnfolderBase]: 235/423 cut-off events. [2024-06-28 00:00:50,198 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2024-06-28 00:00:50,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 423 events. 235/423 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1540 event pairs, 60 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 1551. Up to 384 conditions per place. [2024-06-28 00:00:50,218 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2024-06-28 00:00:50,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 449 flow [2024-06-28 00:00:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-28 00:00:50,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:00:50,219 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 242 flow. Second operand 6 states and 76 transitions. [2024-06-28 00:00:50,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 449 flow [2024-06-28 00:00:50,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 427 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:50,223 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 324 flow [2024-06-28 00:00:50,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 00:00:50,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 00:00:50,224 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 324 flow [2024-06-28 00:00:50,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:50,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:50,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:00:50,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:50,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 780651192, now seen corresponding path program 2 times [2024-06-28 00:00:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125127824] [2024-06-28 00:00:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:51,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:51,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125127824] [2024-06-28 00:00:51,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125127824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:51,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:51,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:51,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158924587] [2024-06-28 00:00:51,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:51,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:51,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:51,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:51,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:51,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:51,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:51,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:51,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:51,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:51,544 INFO L124 PetriNetUnfolderBase]: 232/418 cut-off events. [2024-06-28 00:00:51,544 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2024-06-28 00:00:51,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 418 events. 232/418 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1517 event pairs, 59 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1631. Up to 402 conditions per place. [2024-06-28 00:00:51,547 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-28 00:00:51,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 454 flow [2024-06-28 00:00:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:00:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:00:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 00:00:51,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 00:00:51,549 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 324 flow. Second operand 6 states and 70 transitions. [2024-06-28 00:00:51,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 454 flow [2024-06-28 00:00:51,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 443 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:00:51,553 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 350 flow [2024-06-28 00:00:51,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-28 00:00:51,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-28 00:00:51,554 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 350 flow [2024-06-28 00:00:51,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:51,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:51,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:00:51,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:51,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash -734173414, now seen corresponding path program 3 times [2024-06-28 00:00:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:51,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216225361] [2024-06-28 00:00:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216225361] [2024-06-28 00:00:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216225361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:52,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:00:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178889930] [2024-06-28 00:00:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:52,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:00:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:00:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:00:52,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:00:52,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:52,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:52,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:00:52,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:53,308 INFO L124 PetriNetUnfolderBase]: 209/389 cut-off events. [2024-06-28 00:00:53,308 INFO L125 PetriNetUnfolderBase]: For 2059/2059 co-relation queries the response was YES. [2024-06-28 00:00:53,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 389 events. 209/389 cut-off events. For 2059/2059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1437 event pairs, 52 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 1563. Up to 311 conditions per place. [2024-06-28 00:00:53,312 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-28 00:00:53,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 513 flow [2024-06-28 00:00:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 00:00:53,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43317972350230416 [2024-06-28 00:00:53,314 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 350 flow. Second operand 7 states and 94 transitions. [2024-06-28 00:00:53,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 513 flow [2024-06-28 00:00:53,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 63 transitions, 492 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:00:53,319 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 401 flow [2024-06-28 00:00:53,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-28 00:00:53,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 00:00:53,320 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 401 flow [2024-06-28 00:00:53,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:53,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:53,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:00:53,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:53,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash 780659128, now seen corresponding path program 1 times [2024-06-28 00:00:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115961709] [2024-06-28 00:00:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:53,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115961709] [2024-06-28 00:00:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115961709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:55,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:55,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:55,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857767518] [2024-06-28 00:00:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:55,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:55,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:55,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:55,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:55,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:55,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:55,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:55,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:55,730 INFO L124 PetriNetUnfolderBase]: 219/396 cut-off events. [2024-06-28 00:00:55,730 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-06-28 00:00:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 396 events. 219/396 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1398 event pairs, 56 based on Foata normal form. 3/397 useless extension candidates. Maximal degree in co-relation 1661. Up to 371 conditions per place. [2024-06-28 00:00:55,734 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-28 00:00:55,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 551 flow [2024-06-28 00:00:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:00:55,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:00:55,739 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 401 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:00:55,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 551 flow [2024-06-28 00:00:55,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 490 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:55,746 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 385 flow [2024-06-28 00:00:55,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-28 00:00:55,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 00:00:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 385 flow [2024-06-28 00:00:55,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:55,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:55,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:00:55,748 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:55,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:55,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1986983618, now seen corresponding path program 1 times [2024-06-28 00:00:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874287469] [2024-06-28 00:00:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:55,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:57,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:57,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874287469] [2024-06-28 00:00:57,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874287469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:57,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:57,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703105038] [2024-06-28 00:00:57,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:57,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:57,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:57,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:57,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:57,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:57,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:57,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:57,348 INFO L124 PetriNetUnfolderBase]: 235/422 cut-off events. [2024-06-28 00:00:57,348 INFO L125 PetriNetUnfolderBase]: For 2697/2697 co-relation queries the response was YES. [2024-06-28 00:00:57,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 422 events. 235/422 cut-off events. For 2697/2697 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1505 event pairs, 58 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1761. Up to 361 conditions per place. [2024-06-28 00:00:57,352 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-28 00:00:57,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 598 flow [2024-06-28 00:00:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 00:00:57,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 00:00:57,354 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 385 flow. Second operand 7 states and 88 transitions. [2024-06-28 00:00:57,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 598 flow [2024-06-28 00:00:57,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 573 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:00:57,360 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 432 flow [2024-06-28 00:00:57,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-06-28 00:00:57,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-28 00:00:57,361 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 432 flow [2024-06-28 00:00:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:57,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:57,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:00:57,362 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:57,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1569378686, now seen corresponding path program 2 times [2024-06-28 00:00:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:57,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598316371] [2024-06-28 00:00:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:00:58,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:00:58,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:00:58,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598316371] [2024-06-28 00:00:58,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598316371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:00:58,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:00:58,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:00:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622281747] [2024-06-28 00:00:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:00:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:00:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:00:58,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:00:58,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:00:58,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:00:58,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:58,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:00:58,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:00:58,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:00:58,911 INFO L124 PetriNetUnfolderBase]: 238/427 cut-off events. [2024-06-28 00:00:58,912 INFO L125 PetriNetUnfolderBase]: For 3153/3153 co-relation queries the response was YES. [2024-06-28 00:00:58,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 427 events. 238/427 cut-off events. For 3153/3153 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1529 event pairs, 56 based on Foata normal form. 1/426 useless extension candidates. Maximal degree in co-relation 1900. Up to 408 conditions per place. [2024-06-28 00:00:58,916 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-28 00:00:58,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 592 flow [2024-06-28 00:00:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:00:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:00:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 00:00:58,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-28 00:00:58,918 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 432 flow. Second operand 7 states and 79 transitions. [2024-06-28 00:00:58,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 592 flow [2024-06-28 00:00:58,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 569 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:00:58,923 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 456 flow [2024-06-28 00:00:58,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-06-28 00:00:58,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 00:00:58,924 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 456 flow [2024-06-28 00:00:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:00:58,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:00:58,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:00:58,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:00:58,925 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:00:58,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:00:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1838771300, now seen corresponding path program 3 times [2024-06-28 00:00:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:00:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702179800] [2024-06-28 00:00:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:00:58,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:00:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702179800] [2024-06-28 00:01:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702179800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:00,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:00,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:00,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835883971] [2024-06-28 00:01:00,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:00,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:00,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:00,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:00,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:00,402 INFO L124 PetriNetUnfolderBase]: 236/424 cut-off events. [2024-06-28 00:01:00,402 INFO L125 PetriNetUnfolderBase]: For 3633/3633 co-relation queries the response was YES. [2024-06-28 00:01:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 424 events. 236/424 cut-off events. For 3633/3633 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1520 event pairs, 56 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 1947. Up to 399 conditions per place. [2024-06-28 00:01:00,406 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-28 00:01:00,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 624 flow [2024-06-28 00:01:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-28 00:01:00,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-28 00:01:00,408 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 456 flow. Second operand 7 states and 81 transitions. [2024-06-28 00:01:00,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 624 flow [2024-06-28 00:01:00,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 595 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:00,414 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 484 flow [2024-06-28 00:01:00,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-06-28 00:01:00,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 00:01:00,415 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 484 flow [2024-06-28 00:01:00,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:00,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:00,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:00,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:01:00,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:00,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1284538366, now seen corresponding path program 4 times [2024-06-28 00:01:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441947054] [2024-06-28 00:01:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:00,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:01,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441947054] [2024-06-28 00:01:01,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441947054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:01,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:01,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113076846] [2024-06-28 00:01:01,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:01,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:01,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:01,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:01,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:02,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:02,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:02,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:02,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:02,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:02,429 INFO L124 PetriNetUnfolderBase]: 237/426 cut-off events. [2024-06-28 00:01:02,429 INFO L125 PetriNetUnfolderBase]: For 4224/4224 co-relation queries the response was YES. [2024-06-28 00:01:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 426 events. 237/426 cut-off events. For 4224/4224 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1538 event pairs, 52 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1999. Up to 328 conditions per place. [2024-06-28 00:01:02,432 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 27 changer transitions 0/82 dead transitions. [2024-06-28 00:01:02,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 82 transitions, 773 flow [2024-06-28 00:01:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:02,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 00:01:02,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-28 00:01:02,433 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 484 flow. Second operand 7 states and 97 transitions. [2024-06-28 00:01:02,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 82 transitions, 773 flow [2024-06-28 00:01:02,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 734 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:02,438 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 547 flow [2024-06-28 00:01:02,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-06-28 00:01:02,439 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-28 00:01:02,439 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 547 flow [2024-06-28 00:01:02,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:02,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:02,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:02,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:01:02,440 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:02,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash -777291083, now seen corresponding path program 1 times [2024-06-28 00:01:02,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968375594] [2024-06-28 00:01:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:03,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968375594] [2024-06-28 00:01:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968375594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142261621] [2024-06-28 00:01:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:03,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:03,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:03,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 547 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:03,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:03,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:03,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:04,089 INFO L124 PetriNetUnfolderBase]: 240/439 cut-off events. [2024-06-28 00:01:04,090 INFO L125 PetriNetUnfolderBase]: For 5071/5071 co-relation queries the response was YES. [2024-06-28 00:01:04,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 439 events. 240/439 cut-off events. For 5071/5071 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1658 event pairs, 58 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2159. Up to 358 conditions per place. [2024-06-28 00:01:04,093 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 57 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2024-06-28 00:01:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 798 flow [2024-06-28 00:01:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:01:04,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 00:01:04,094 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 547 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:01:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 798 flow [2024-06-28 00:01:04,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 736 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:04,101 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 583 flow [2024-06-28 00:01:04,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=583, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2024-06-28 00:01:04,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 00:01:04,101 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 583 flow [2024-06-28 00:01:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:04,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:04,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:04,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:01:04,102 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:04,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1470674017, now seen corresponding path program 2 times [2024-06-28 00:01:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449299929] [2024-06-28 00:01:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:04,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:05,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449299929] [2024-06-28 00:01:05,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449299929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:05,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:05,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:05,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349643494] [2024-06-28 00:01:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:05,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:05,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:05,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:05,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:05,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:05,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:05,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:05,564 INFO L124 PetriNetUnfolderBase]: 238/436 cut-off events. [2024-06-28 00:01:05,564 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-28 00:01:05,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 436 events. 238/436 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1639 event pairs, 58 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 2174. Up to 367 conditions per place. [2024-06-28 00:01:05,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 17 changer transitions 0/84 dead transitions. [2024-06-28 00:01:05,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 756 flow [2024-06-28 00:01:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-28 00:01:05,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-28 00:01:05,568 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 583 flow. Second operand 7 states and 90 transitions. [2024-06-28 00:01:05,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 756 flow [2024-06-28 00:01:05,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 728 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:05,575 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 594 flow [2024-06-28 00:01:05,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-06-28 00:01:05,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-28 00:01:05,576 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 594 flow [2024-06-28 00:01:05,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:05,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:05,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:01:05,577 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:05,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -773475851, now seen corresponding path program 1 times [2024-06-28 00:01:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372401310] [2024-06-28 00:01:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372401310] [2024-06-28 00:01:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372401310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912164458] [2024-06-28 00:01:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:06,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:06,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:06,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:06,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:06,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:06,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:06,915 INFO L124 PetriNetUnfolderBase]: 298/526 cut-off events. [2024-06-28 00:01:06,916 INFO L125 PetriNetUnfolderBase]: For 7386/7386 co-relation queries the response was YES. [2024-06-28 00:01:06,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 526 events. 298/526 cut-off events. For 7386/7386 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2013 event pairs, 69 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 2677. Up to 395 conditions per place. [2024-06-28 00:01:06,920 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 72 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-28 00:01:06,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 917 flow [2024-06-28 00:01:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 00:01:06,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:01:06,921 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 594 flow. Second operand 8 states and 104 transitions. [2024-06-28 00:01:06,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 98 transitions, 917 flow [2024-06-28 00:01:06,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 98 transitions, 882 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:06,930 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 677 flow [2024-06-28 00:01:06,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-06-28 00:01:06,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-28 00:01:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 677 flow [2024-06-28 00:01:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:06,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:06,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:01:06,931 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:06,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -773476068, now seen corresponding path program 1 times [2024-06-28 00:01:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929623490] [2024-06-28 00:01:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:07,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929623490] [2024-06-28 00:01:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929623490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:07,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:07,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:07,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804362653] [2024-06-28 00:01:07,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:07,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:07,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:07,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:07,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:07,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 677 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:07,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:07,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:07,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:08,179 INFO L124 PetriNetUnfolderBase]: 306/539 cut-off events. [2024-06-28 00:01:08,179 INFO L125 PetriNetUnfolderBase]: For 7964/7964 co-relation queries the response was YES. [2024-06-28 00:01:08,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 539 events. 306/539 cut-off events. For 7964/7964 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2071 event pairs, 70 based on Foata normal form. 1/538 useless extension candidates. Maximal degree in co-relation 2943. Up to 474 conditions per place. [2024-06-28 00:01:08,188 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-28 00:01:08,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 1004 flow [2024-06-28 00:01:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 00:01:08,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 00:01:08,191 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 677 flow. Second operand 7 states and 88 transitions. [2024-06-28 00:01:08,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 1004 flow [2024-06-28 00:01:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 974 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:08,209 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 739 flow [2024-06-28 00:01:08,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-06-28 00:01:08,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-28 00:01:08,210 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 739 flow [2024-06-28 00:01:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:08,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:08,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:01:08,211 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:08,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1466954792, now seen corresponding path program 2 times [2024-06-28 00:01:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209176340] [2024-06-28 00:01:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:09,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:09,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209176340] [2024-06-28 00:01:09,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209176340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:09,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:09,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:09,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245977465] [2024-06-28 00:01:09,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:09,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:09,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:09,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:09,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 739 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:09,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:09,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:09,428 INFO L124 PetriNetUnfolderBase]: 304/536 cut-off events. [2024-06-28 00:01:09,428 INFO L125 PetriNetUnfolderBase]: For 8499/8499 co-relation queries the response was YES. [2024-06-28 00:01:09,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 536 events. 304/536 cut-off events. For 8499/8499 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2055 event pairs, 70 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 2952. Up to 472 conditions per place. [2024-06-28 00:01:09,432 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 28 changer transitions 0/97 dead transitions. [2024-06-28 00:01:09,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 998 flow [2024-06-28 00:01:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 00:01:09,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-28 00:01:09,434 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 739 flow. Second operand 7 states and 89 transitions. [2024-06-28 00:01:09,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 998 flow [2024-06-28 00:01:09,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 959 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:09,445 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 785 flow [2024-06-28 00:01:09,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=785, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-06-28 00:01:09,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-28 00:01:09,446 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 785 flow [2024-06-28 00:01:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:09,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:09,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:09,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:01:09,447 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:09,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1405831081, now seen corresponding path program 2 times [2024-06-28 00:01:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111942667] [2024-06-28 00:01:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111942667] [2024-06-28 00:01:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111942667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259911947] [2024-06-28 00:01:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:10,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:10,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:10,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 785 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:10,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:10,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:10,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:10,724 INFO L124 PetriNetUnfolderBase]: 313/551 cut-off events. [2024-06-28 00:01:10,725 INFO L125 PetriNetUnfolderBase]: For 9939/9939 co-relation queries the response was YES. [2024-06-28 00:01:10,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 551 events. 313/551 cut-off events. For 9939/9939 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2119 event pairs, 68 based on Foata normal form. 3/552 useless extension candidates. Maximal degree in co-relation 3115. Up to 523 conditions per place. [2024-06-28 00:01:10,729 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-28 00:01:10,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 99 transitions, 1023 flow [2024-06-28 00:01:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:01:10,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:01:10,732 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 785 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:01:10,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 99 transitions, 1023 flow [2024-06-28 00:01:10,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 970 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:10,744 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 791 flow [2024-06-28 00:01:10,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-06-28 00:01:10,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 00:01:10,745 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 791 flow [2024-06-28 00:01:10,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:10,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:10,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:10,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:01:10,746 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:10,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 429985406, now seen corresponding path program 3 times [2024-06-28 00:01:10,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:10,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23528554] [2024-06-28 00:01:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:10,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:11,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:11,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23528554] [2024-06-28 00:01:11,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23528554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:11,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:11,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277399228] [2024-06-28 00:01:11,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:11,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:11,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:11,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 791 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:11,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:11,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:11,896 INFO L124 PetriNetUnfolderBase]: 311/548 cut-off events. [2024-06-28 00:01:11,897 INFO L125 PetriNetUnfolderBase]: For 10292/10292 co-relation queries the response was YES. [2024-06-28 00:01:11,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 548 events. 311/548 cut-off events. For 10292/10292 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2108 event pairs, 69 based on Foata normal form. 1/547 useless extension candidates. Maximal degree in co-relation 3131. Up to 526 conditions per place. [2024-06-28 00:01:11,901 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-28 00:01:11,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 993 flow [2024-06-28 00:01:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 00:01:11,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 00:01:11,903 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 791 flow. Second operand 7 states and 80 transitions. [2024-06-28 00:01:11,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 993 flow [2024-06-28 00:01:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 943 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:11,917 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 772 flow [2024-06-28 00:01:11,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=772, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-06-28 00:01:11,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 00:01:11,918 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 772 flow [2024-06-28 00:01:11,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:11,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:11,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:01:11,919 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:11,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1406097991, now seen corresponding path program 3 times [2024-06-28 00:01:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329288740] [2024-06-28 00:01:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:13,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329288740] [2024-06-28 00:01:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329288740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:13,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563446198] [2024-06-28 00:01:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:13,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:13,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:13,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:13,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 772 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:13,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:13,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:13,447 INFO L124 PetriNetUnfolderBase]: 320/563 cut-off events. [2024-06-28 00:01:13,448 INFO L125 PetriNetUnfolderBase]: For 11615/11615 co-relation queries the response was YES. [2024-06-28 00:01:13,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 563 events. 320/563 cut-off events. For 11615/11615 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2185 event pairs, 68 based on Foata normal form. 3/564 useless extension candidates. Maximal degree in co-relation 3208. Up to 523 conditions per place. [2024-06-28 00:01:13,454 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 17 changer transitions 0/103 dead transitions. [2024-06-28 00:01:13,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 1028 flow [2024-06-28 00:01:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 00:01:13,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:01:13,456 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 772 flow. Second operand 8 states and 94 transitions. [2024-06-28 00:01:13,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 1028 flow [2024-06-28 00:01:13,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 992 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:13,476 INFO L231 Difference]: Finished difference. Result has 101 places, 92 transitions, 805 flow [2024-06-28 00:01:13,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=805, PETRI_PLACES=101, PETRI_TRANSITIONS=92} [2024-06-28 00:01:13,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 00:01:13,476 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 92 transitions, 805 flow [2024-06-28 00:01:13,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:13,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:13,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:13,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:01:13,477 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:13,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:13,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1167336471, now seen corresponding path program 4 times [2024-06-28 00:01:13,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:13,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081401903] [2024-06-28 00:01:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:13,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:14,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:14,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081401903] [2024-06-28 00:01:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081401903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:14,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:14,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016328896] [2024-06-28 00:01:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:14,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:14,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:14,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 805 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:14,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:15,048 INFO L124 PetriNetUnfolderBase]: 314/554 cut-off events. [2024-06-28 00:01:15,048 INFO L125 PetriNetUnfolderBase]: For 11884/11884 co-relation queries the response was YES. [2024-06-28 00:01:15,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3230 conditions, 554 events. 314/554 cut-off events. For 11884/11884 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2142 event pairs, 66 based on Foata normal form. 3/555 useless extension candidates. Maximal degree in co-relation 3176. Up to 499 conditions per place. [2024-06-28 00:01:15,053 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-28 00:01:15,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 1069 flow [2024-06-28 00:01:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:15,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:15,055 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 805 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 1069 flow [2024-06-28 00:01:15,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 105 transitions, 1018 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:15,069 INFO L231 Difference]: Finished difference. Result has 103 places, 94 transitions, 835 flow [2024-06-28 00:01:15,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=103, PETRI_TRANSITIONS=94} [2024-06-28 00:01:15,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 00:01:15,070 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 94 transitions, 835 flow [2024-06-28 00:01:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:15,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:15,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:15,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:01:15,071 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:15,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:15,071 INFO L85 PathProgramCache]: Analyzing trace with hash 366309419, now seen corresponding path program 3 times [2024-06-28 00:01:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:15,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616536139] [2024-06-28 00:01:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:16,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616536139] [2024-06-28 00:01:16,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616536139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:16,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:16,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:16,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751953961] [2024-06-28 00:01:16,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:16,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:16,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:01:16,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 94 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:16,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:16,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:01:16,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:16,556 INFO L124 PetriNetUnfolderBase]: 302/544 cut-off events. [2024-06-28 00:01:16,556 INFO L125 PetriNetUnfolderBase]: For 12369/12369 co-relation queries the response was YES. [2024-06-28 00:01:16,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 544 events. 302/544 cut-off events. For 12369/12369 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2156 event pairs, 56 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3157. Up to 418 conditions per place. [2024-06-28 00:01:16,560 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 68 selfloop transitions, 30 changer transitions 0/110 dead transitions. [2024-06-28 00:01:16,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 110 transitions, 1145 flow [2024-06-28 00:01:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-28 00:01:16,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-06-28 00:01:16,562 INFO L175 Difference]: Start difference. First operand has 103 places, 94 transitions, 835 flow. Second operand 7 states and 102 transitions. [2024-06-28 00:01:16,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 110 transitions, 1145 flow [2024-06-28 00:01:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 110 transitions, 1082 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:16,576 INFO L231 Difference]: Finished difference. Result has 104 places, 98 transitions, 876 flow [2024-06-28 00:01:16,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=876, PETRI_PLACES=104, PETRI_TRANSITIONS=98} [2024-06-28 00:01:16,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 00:01:16,577 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 98 transitions, 876 flow [2024-06-28 00:01:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:16,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:01:16,578 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:16,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 395027819, now seen corresponding path program 4 times [2024-06-28 00:01:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049137755] [2024-06-28 00:01:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049137755] [2024-06-28 00:01:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049137755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:17,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:17,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875409199] [2024-06-28 00:01:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:17,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:18,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:01:18,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 98 transitions, 876 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:18,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:01:18,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:18,319 INFO L124 PetriNetUnfolderBase]: 300/541 cut-off events. [2024-06-28 00:01:18,319 INFO L125 PetriNetUnfolderBase]: For 12740/12740 co-relation queries the response was YES. [2024-06-28 00:01:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3210 conditions, 541 events. 300/541 cut-off events. For 12740/12740 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2147 event pairs, 54 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3154. Up to 442 conditions per place. [2024-06-28 00:01:18,322 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-28 00:01:18,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 1084 flow [2024-06-28 00:01:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-28 00:01:18,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:01:18,324 INFO L175 Difference]: Start difference. First operand has 104 places, 98 transitions, 876 flow. Second operand 7 states and 98 transitions. [2024-06-28 00:01:18,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 1084 flow [2024-06-28 00:01:18,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 1043 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:18,337 INFO L231 Difference]: Finished difference. Result has 107 places, 98 transitions, 895 flow [2024-06-28 00:01:18,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2024-06-28 00:01:18,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 00:01:18,337 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 895 flow [2024-06-28 00:01:18,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:18,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:18,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:01:18,338 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:18,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1165210050, now seen corresponding path program 4 times [2024-06-28 00:01:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593204135] [2024-06-28 00:01:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593204135] [2024-06-28 00:01:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593204135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:19,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:19,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786585027] [2024-06-28 00:01:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:19,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:19,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 895 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:19,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:19,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:19,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:19,954 INFO L124 PetriNetUnfolderBase]: 322/568 cut-off events. [2024-06-28 00:01:19,954 INFO L125 PetriNetUnfolderBase]: For 12525/12525 co-relation queries the response was YES. [2024-06-28 00:01:19,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 568 events. 322/568 cut-off events. For 12525/12525 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2243 event pairs, 57 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3300. Up to 464 conditions per place. [2024-06-28 00:01:19,959 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-06-28 00:01:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 1248 flow [2024-06-28 00:01:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-28 00:01:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470046082949309 [2024-06-28 00:01:19,960 INFO L175 Difference]: Start difference. First operand has 107 places, 98 transitions, 895 flow. Second operand 7 states and 97 transitions. [2024-06-28 00:01:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 1248 flow [2024-06-28 00:01:19,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 1171 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:19,974 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 959 flow [2024-06-28 00:01:19,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=959, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-06-28 00:01:19,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-28 00:01:19,974 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 959 flow [2024-06-28 00:01:19,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:19,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:19,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:01:19,975 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:19,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1165982663, now seen corresponding path program 5 times [2024-06-28 00:01:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:19,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221125855] [2024-06-28 00:01:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:19,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221125855] [2024-06-28 00:01:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221125855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:21,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892852840] [2024-06-28 00:01:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:21,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:21,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:21,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:21,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 959 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:22,445 INFO L124 PetriNetUnfolderBase]: 323/571 cut-off events. [2024-06-28 00:01:22,446 INFO L125 PetriNetUnfolderBase]: For 12601/12601 co-relation queries the response was YES. [2024-06-28 00:01:22,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 571 events. 323/571 cut-off events. For 12601/12601 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2247 event pairs, 60 based on Foata normal form. 2/571 useless extension candidates. Maximal degree in co-relation 3312. Up to 417 conditions per place. [2024-06-28 00:01:22,451 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 36 changer transitions 0/128 dead transitions. [2024-06-28 00:01:22,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 128 transitions, 1423 flow [2024-06-28 00:01:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 00:01:22,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-28 00:01:22,453 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 959 flow. Second operand 8 states and 110 transitions. [2024-06-28 00:01:22,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 128 transitions, 1423 flow [2024-06-28 00:01:22,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 1357 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:22,472 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 1060 flow [2024-06-28 00:01:22,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1060, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2024-06-28 00:01:22,473 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-28 00:01:22,473 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 1060 flow [2024-06-28 00:01:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:22,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:22,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:01:22,474 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:22,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1165006380, now seen corresponding path program 5 times [2024-06-28 00:01:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731049836] [2024-06-28 00:01:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731049836] [2024-06-28 00:01:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731049836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:24,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:01:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165287224] [2024-06-28 00:01:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:24,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:01:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:01:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:01:24,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:24,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 1060 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:24,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:24,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:24,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:24,541 INFO L124 PetriNetUnfolderBase]: 321/568 cut-off events. [2024-06-28 00:01:24,541 INFO L125 PetriNetUnfolderBase]: For 12868/12868 co-relation queries the response was YES. [2024-06-28 00:01:24,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3474 conditions, 568 events. 321/568 cut-off events. For 12868/12868 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2239 event pairs, 58 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3414. Up to 464 conditions per place. [2024-06-28 00:01:24,546 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 87 selfloop transitions, 32 changer transitions 0/121 dead transitions. [2024-06-28 00:01:24,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 1324 flow [2024-06-28 00:01:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:01:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:01:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-28 00:01:24,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:01:24,548 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 1060 flow. Second operand 7 states and 93 transitions. [2024-06-28 00:01:24,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 1324 flow [2024-06-28 00:01:24,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 121 transitions, 1271 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 00:01:24,568 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 1076 flow [2024-06-28 00:01:24,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1076, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2024-06-28 00:01:24,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 00:01:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 1076 flow [2024-06-28 00:01:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:24,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:24,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:01:24,570 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:24,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1673720617, now seen corresponding path program 1 times [2024-06-28 00:01:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092933999] [2024-06-28 00:01:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:24,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:26,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:26,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092933999] [2024-06-28 00:01:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092933999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:26,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:26,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:26,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303979560] [2024-06-28 00:01:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:26,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:26,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:26,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:26,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 1076 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:26,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:26,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:26,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:26,896 INFO L124 PetriNetUnfolderBase]: 325/590 cut-off events. [2024-06-28 00:01:26,898 INFO L125 PetriNetUnfolderBase]: For 15339/15339 co-relation queries the response was YES. [2024-06-28 00:01:26,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 590 events. 325/590 cut-off events. For 15339/15339 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2486 event pairs, 69 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3578. Up to 472 conditions per place. [2024-06-28 00:01:26,904 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 93 selfloop transitions, 22 changer transitions 0/128 dead transitions. [2024-06-28 00:01:26,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 128 transitions, 1422 flow [2024-06-28 00:01:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:01:26,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 00:01:26,907 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 1076 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:01:26,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 128 transitions, 1422 flow [2024-06-28 00:01:26,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 1359 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:26,934 INFO L231 Difference]: Finished difference. Result has 123 places, 115 transitions, 1101 flow [2024-06-28 00:01:26,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1101, PETRI_PLACES=123, PETRI_TRANSITIONS=115} [2024-06-28 00:01:26,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 00:01:26,935 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 115 transitions, 1101 flow [2024-06-28 00:01:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:26,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:26,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:26,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:01:26,936 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781067, now seen corresponding path program 2 times [2024-06-28 00:01:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370885385] [2024-06-28 00:01:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370885385] [2024-06-28 00:01:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370885385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367773575] [2024-06-28 00:01:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:28,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:28,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 1101 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:28,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:28,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:28,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:29,326 INFO L124 PetriNetUnfolderBase]: 329/600 cut-off events. [2024-06-28 00:01:29,327 INFO L125 PetriNetUnfolderBase]: For 16315/16315 co-relation queries the response was YES. [2024-06-28 00:01:29,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 600 events. 329/600 cut-off events. For 16315/16315 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2537 event pairs, 73 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3674. Up to 509 conditions per place. [2024-06-28 00:01:29,332 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 93 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-28 00:01:29,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1366 flow [2024-06-28 00:01:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:01:29,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:29,334 INFO L175 Difference]: Start difference. First operand has 123 places, 115 transitions, 1101 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:01:29,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1366 flow [2024-06-28 00:01:29,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 126 transitions, 1326 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:29,364 INFO L231 Difference]: Finished difference. Result has 127 places, 116 transitions, 1120 flow [2024-06-28 00:01:29,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2024-06-28 00:01:29,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 00:01:29,365 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 1120 flow [2024-06-28 00:01:29,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:29,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:29,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:29,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:01:29,366 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:29,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781191, now seen corresponding path program 1 times [2024-06-28 00:01:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:29,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982680301] [2024-06-28 00:01:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:31,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:31,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982680301] [2024-06-28 00:01:31,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982680301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:31,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:31,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433476990] [2024-06-28 00:01:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:31,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:31,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 1120 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:31,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:31,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:31,455 INFO L124 PetriNetUnfolderBase]: 353/629 cut-off events. [2024-06-28 00:01:31,455 INFO L125 PetriNetUnfolderBase]: For 17219/17219 co-relation queries the response was YES. [2024-06-28 00:01:31,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 629 events. 353/629 cut-off events. For 17219/17219 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2638 event pairs, 79 based on Foata normal form. 1/628 useless extension candidates. Maximal degree in co-relation 3861. Up to 534 conditions per place. [2024-06-28 00:01:31,461 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-28 00:01:31,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1484 flow [2024-06-28 00:01:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:01:31,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 00:01:31,463 INFO L175 Difference]: Start difference. First operand has 127 places, 116 transitions, 1120 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:01:31,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1484 flow [2024-06-28 00:01:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 130 transitions, 1442 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:31,489 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 1169 flow [2024-06-28 00:01:31,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1169, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2024-06-28 00:01:31,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-28 00:01:31,491 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 1169 flow [2024-06-28 00:01:31,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:31,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:31,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:01:31,492 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:31,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1676582351, now seen corresponding path program 2 times [2024-06-28 00:01:31,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:31,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742467971] [2024-06-28 00:01:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:32,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742467971] [2024-06-28 00:01:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742467971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90901831] [2024-06-28 00:01:32,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:32,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:32,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:32,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:32,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:32,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:32,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:32,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:33,222 INFO L124 PetriNetUnfolderBase]: 356/634 cut-off events. [2024-06-28 00:01:33,222 INFO L125 PetriNetUnfolderBase]: For 18372/18372 co-relation queries the response was YES. [2024-06-28 00:01:33,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 634 events. 356/634 cut-off events. For 18372/18372 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2658 event pairs, 79 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 3963. Up to 567 conditions per place. [2024-06-28 00:01:33,227 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2024-06-28 00:01:33,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1461 flow [2024-06-28 00:01:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 00:01:33,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:01:33,229 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 1169 flow. Second operand 8 states and 96 transitions. [2024-06-28 00:01:33,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1461 flow [2024-06-28 00:01:33,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 1421 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:01:33,255 INFO L231 Difference]: Finished difference. Result has 132 places, 122 transitions, 1208 flow [2024-06-28 00:01:33,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1208, PETRI_PLACES=132, PETRI_TRANSITIONS=122} [2024-06-28 00:01:33,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-28 00:01:33,256 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 122 transitions, 1208 flow [2024-06-28 00:01:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:33,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:33,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:01:33,257 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:33,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1653746717, now seen corresponding path program 3 times [2024-06-28 00:01:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462240547] [2024-06-28 00:01:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:34,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462240547] [2024-06-28 00:01:34,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462240547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645494345] [2024-06-28 00:01:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:34,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:34,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:34,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:34,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:34,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 122 transitions, 1208 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:34,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:34,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:34,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:35,072 INFO L124 PetriNetUnfolderBase]: 359/639 cut-off events. [2024-06-28 00:01:35,080 INFO L125 PetriNetUnfolderBase]: For 19527/19527 co-relation queries the response was YES. [2024-06-28 00:01:35,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 639 events. 359/639 cut-off events. For 19527/19527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2683 event pairs, 79 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 4068. Up to 566 conditions per place. [2024-06-28 00:01:35,103 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-28 00:01:35,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 132 transitions, 1506 flow [2024-06-28 00:01:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:01:35,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:01:35,106 INFO L175 Difference]: Start difference. First operand has 132 places, 122 transitions, 1208 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:01:35,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 132 transitions, 1506 flow [2024-06-28 00:01:35,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 132 transitions, 1449 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:35,174 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 1238 flow [2024-06-28 00:01:35,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1238, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-06-28 00:01:35,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 00:01:35,176 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 1238 flow [2024-06-28 00:01:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:35,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:35,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:35,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:01:35,177 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:35,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1676577577, now seen corresponding path program 3 times [2024-06-28 00:01:35,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:35,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307909334] [2024-06-28 00:01:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:37,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:37,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307909334] [2024-06-28 00:01:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307909334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:37,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034520450] [2024-06-28 00:01:37,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:37,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:37,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:37,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:01:37,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 1238 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:37,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:01:37,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:37,874 INFO L124 PetriNetUnfolderBase]: 342/620 cut-off events. [2024-06-28 00:01:37,874 INFO L125 PetriNetUnfolderBase]: For 20463/20463 co-relation queries the response was YES. [2024-06-28 00:01:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4032 conditions, 620 events. 342/620 cut-off events. For 20463/20463 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2646 event pairs, 72 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 3961. Up to 531 conditions per place. [2024-06-28 00:01:37,893 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 18 changer transitions 0/133 dead transitions. [2024-06-28 00:01:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 133 transitions, 1492 flow [2024-06-28 00:01:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 00:01:37,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:01:37,910 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 1238 flow. Second operand 8 states and 100 transitions. [2024-06-28 00:01:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 133 transitions, 1492 flow [2024-06-28 00:01:37,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 1423 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:37,983 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1209 flow [2024-06-28 00:01:37,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1209, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2024-06-28 00:01:37,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-28 00:01:37,984 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1209 flow [2024-06-28 00:01:37,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:37,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:37,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:37,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:01:37,986 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:37,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1791868871, now seen corresponding path program 4 times [2024-06-28 00:01:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145971693] [2024-06-28 00:01:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:40,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:40,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:40,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145971693] [2024-06-28 00:01:40,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145971693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:40,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:40,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:40,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856316849] [2024-06-28 00:01:40,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:40,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:40,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:40,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1209 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:40,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:40,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:40,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:40,517 INFO L124 PetriNetUnfolderBase]: 359/639 cut-off events. [2024-06-28 00:01:40,517 INFO L125 PetriNetUnfolderBase]: For 20724/20724 co-relation queries the response was YES. [2024-06-28 00:01:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4136 conditions, 639 events. 359/639 cut-off events. For 20724/20724 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2696 event pairs, 82 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 4064. Up to 556 conditions per place. [2024-06-28 00:01:40,539 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 34 changer transitions 0/137 dead transitions. [2024-06-28 00:01:40,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 137 transitions, 1597 flow [2024-06-28 00:01:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:40,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 00:01:40,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 00:01:40,553 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1209 flow. Second operand 8 states and 101 transitions. [2024-06-28 00:01:40,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 137 transitions, 1597 flow [2024-06-28 00:01:40,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1559 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:40,640 INFO L231 Difference]: Finished difference. Result has 138 places, 126 transitions, 1266 flow [2024-06-28 00:01:40,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1266, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2024-06-28 00:01:40,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-28 00:01:40,641 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 1266 flow [2024-06-28 00:01:40,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:40,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:40,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:01:40,642 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:40,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1769222213, now seen corresponding path program 1 times [2024-06-28 00:01:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202102794] [2024-06-28 00:01:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:42,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202102794] [2024-06-28 00:01:42,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202102794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:42,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:42,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275305125] [2024-06-28 00:01:42,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:43,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:43,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:43,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:43,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:43,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 1266 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:43,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:43,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:43,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:43,359 INFO L124 PetriNetUnfolderBase]: 383/678 cut-off events. [2024-06-28 00:01:43,360 INFO L125 PetriNetUnfolderBase]: For 24985/24985 co-relation queries the response was YES. [2024-06-28 00:01:43,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4486 conditions, 678 events. 383/678 cut-off events. For 24985/24985 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2888 event pairs, 85 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 4413. Up to 505 conditions per place. [2024-06-28 00:01:43,365 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 39 changer transitions 0/147 dead transitions. [2024-06-28 00:01:43,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 147 transitions, 1798 flow [2024-06-28 00:01:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 00:01:43,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 00:01:43,390 INFO L175 Difference]: Start difference. First operand has 138 places, 126 transitions, 1266 flow. Second operand 9 states and 112 transitions. [2024-06-28 00:01:43,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 147 transitions, 1798 flow [2024-06-28 00:01:43,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 147 transitions, 1711 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:43,425 INFO L231 Difference]: Finished difference. Result has 141 places, 132 transitions, 1330 flow [2024-06-28 00:01:43,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1330, PETRI_PLACES=141, PETRI_TRANSITIONS=132} [2024-06-28 00:01:43,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 00:01:43,426 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 132 transitions, 1330 flow [2024-06-28 00:01:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:43,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:43,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:43,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:01:43,427 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:43,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:43,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1769215703, now seen corresponding path program 2 times [2024-06-28 00:01:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741679312] [2024-06-28 00:01:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:43,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:44,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741679312] [2024-06-28 00:01:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741679312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064591849] [2024-06-28 00:01:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:44,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:44,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:44,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:44,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 132 transitions, 1330 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:44,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:44,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:44,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:45,015 INFO L124 PetriNetUnfolderBase]: 392/693 cut-off events. [2024-06-28 00:01:45,016 INFO L125 PetriNetUnfolderBase]: For 26696/26696 co-relation queries the response was YES. [2024-06-28 00:01:45,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 693 events. 392/693 cut-off events. For 26696/26696 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2982 event pairs, 85 based on Foata normal form. 3/694 useless extension candidates. Maximal degree in co-relation 4553. Up to 513 conditions per place. [2024-06-28 00:01:45,021 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 41 changer transitions 0/152 dead transitions. [2024-06-28 00:01:45,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 152 transitions, 1856 flow [2024-06-28 00:01:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:01:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:01:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 00:01:45,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 00:01:45,023 INFO L175 Difference]: Start difference. First operand has 141 places, 132 transitions, 1330 flow. Second operand 9 states and 115 transitions. [2024-06-28 00:01:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 152 transitions, 1856 flow [2024-06-28 00:01:45,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 152 transitions, 1782 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:01:45,062 INFO L231 Difference]: Finished difference. Result has 146 places, 135 transitions, 1383 flow [2024-06-28 00:01:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1383, PETRI_PLACES=146, PETRI_TRANSITIONS=135} [2024-06-28 00:01:45,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 00:01:45,062 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 135 transitions, 1383 flow [2024-06-28 00:01:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:45,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:45,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:01:45,063 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1791873707, now seen corresponding path program 3 times [2024-06-28 00:01:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526030765] [2024-06-28 00:01:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:45,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:46,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:46,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526030765] [2024-06-28 00:01:46,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526030765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:46,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:46,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176735709] [2024-06-28 00:01:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:46,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:46,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:46,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 135 transitions, 1383 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:46,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:46,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:46,453 INFO L124 PetriNetUnfolderBase]: 386/684 cut-off events. [2024-06-28 00:01:46,453 INFO L125 PetriNetUnfolderBase]: For 26371/26371 co-relation queries the response was YES. [2024-06-28 00:01:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 684 events. 386/684 cut-off events. For 26371/26371 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2951 event pairs, 79 based on Foata normal form. 3/685 useless extension candidates. Maximal degree in co-relation 4433. Up to 509 conditions per place. [2024-06-28 00:01:46,459 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-06-28 00:01:46,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 150 transitions, 1793 flow [2024-06-28 00:01:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 00:01:46,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-06-28 00:01:46,460 INFO L175 Difference]: Start difference. First operand has 146 places, 135 transitions, 1383 flow. Second operand 8 states and 107 transitions. [2024-06-28 00:01:46,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 150 transitions, 1793 flow [2024-06-28 00:01:46,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1717 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:46,536 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 1405 flow [2024-06-28 00:01:46,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1405, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2024-06-28 00:01:46,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 00:01:46,538 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 1405 flow [2024-06-28 00:01:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:46,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:46,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:46,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:01:46,538 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:46,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:46,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1791873521, now seen corresponding path program 5 times [2024-06-28 00:01:46,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:46,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36700791] [2024-06-28 00:01:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:46,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36700791] [2024-06-28 00:01:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36700791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:47,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:47,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:47,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357990160] [2024-06-28 00:01:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:47,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:47,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:47,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:47,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:47,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 1405 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:47,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:47,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:47,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:48,222 INFO L124 PetriNetUnfolderBase]: 389/689 cut-off events. [2024-06-28 00:01:48,222 INFO L125 PetriNetUnfolderBase]: For 26415/26415 co-relation queries the response was YES. [2024-06-28 00:01:48,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4593 conditions, 689 events. 389/689 cut-off events. For 26415/26415 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2960 event pairs, 82 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 4517. Up to 622 conditions per place. [2024-06-28 00:01:48,228 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-06-28 00:01:48,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 146 transitions, 1739 flow [2024-06-28 00:01:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:01:48,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 00:01:48,230 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 1405 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:01:48,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 146 transitions, 1739 flow [2024-06-28 00:01:48,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 1613 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:01:48,273 INFO L231 Difference]: Finished difference. Result has 148 places, 137 transitions, 1370 flow [2024-06-28 00:01:48,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1370, PETRI_PLACES=148, PETRI_TRANSITIONS=137} [2024-06-28 00:01:48,274 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 00:01:48,274 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 137 transitions, 1370 flow [2024-06-28 00:01:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:48,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:48,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:01:48,275 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:48,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1792046501, now seen corresponding path program 6 times [2024-06-28 00:01:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781363246] [2024-06-28 00:01:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:49,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:49,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781363246] [2024-06-28 00:01:49,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781363246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:49,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:49,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:49,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819112306] [2024-06-28 00:01:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:49,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:49,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:49,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:49,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:49,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:49,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 137 transitions, 1370 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:49,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:49,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:49,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:49,909 INFO L124 PetriNetUnfolderBase]: 392/694 cut-off events. [2024-06-28 00:01:49,909 INFO L125 PetriNetUnfolderBase]: For 27211/27211 co-relation queries the response was YES. [2024-06-28 00:01:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 694 events. 392/694 cut-off events. For 27211/27211 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2990 event pairs, 86 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4532. Up to 627 conditions per place. [2024-06-28 00:01:49,915 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-06-28 00:01:49,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 147 transitions, 1706 flow [2024-06-28 00:01:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 00:01:49,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 00:01:49,917 INFO L175 Difference]: Start difference. First operand has 148 places, 137 transitions, 1370 flow. Second operand 8 states and 95 transitions. [2024-06-28 00:01:49,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 147 transitions, 1706 flow [2024-06-28 00:01:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 1635 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:49,963 INFO L231 Difference]: Finished difference. Result has 150 places, 139 transitions, 1388 flow [2024-06-28 00:01:49,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=150, PETRI_TRANSITIONS=139} [2024-06-28 00:01:49,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 00:01:49,964 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 139 transitions, 1388 flow [2024-06-28 00:01:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:49,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:49,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:01:49,965 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -630792831, now seen corresponding path program 1 times [2024-06-28 00:01:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:49,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85046264] [2024-06-28 00:01:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:51,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85046264] [2024-06-28 00:01:51,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85046264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:51,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:51,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:01:51,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013071099] [2024-06-28 00:01:51,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:51,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:01:51,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:51,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:01:51,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:01:51,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:51,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 139 transitions, 1388 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:51,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:51,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:51,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:51,696 INFO L124 PetriNetUnfolderBase]: 398/703 cut-off events. [2024-06-28 00:01:51,697 INFO L125 PetriNetUnfolderBase]: For 29511/29511 co-relation queries the response was YES. [2024-06-28 00:01:51,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 703 events. 398/703 cut-off events. For 29511/29511 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3039 event pairs, 79 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4627. Up to 670 conditions per place. [2024-06-28 00:01:51,703 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-06-28 00:01:51,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 151 transitions, 1738 flow [2024-06-28 00:01:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:01:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:01:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 00:01:51,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 00:01:51,714 INFO L175 Difference]: Start difference. First operand has 150 places, 139 transitions, 1388 flow. Second operand 10 states and 105 transitions. [2024-06-28 00:01:51,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 151 transitions, 1738 flow [2024-06-28 00:01:51,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1669 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:51,799 INFO L231 Difference]: Finished difference. Result has 154 places, 141 transitions, 1390 flow [2024-06-28 00:01:51,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=154, PETRI_TRANSITIONS=141} [2024-06-28 00:01:51,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 00:01:51,813 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 141 transitions, 1390 flow [2024-06-28 00:01:51,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:51,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:51,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:51,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:01:51,813 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:51,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1608916701, now seen corresponding path program 4 times [2024-06-28 00:01:51,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:51,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98896012] [2024-06-28 00:01:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:51,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:53,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98896012] [2024-06-28 00:01:53,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98896012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:53,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:53,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20391178] [2024-06-28 00:01:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:53,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:53,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 141 transitions, 1390 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:53,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:53,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:53,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:53,376 INFO L124 PetriNetUnfolderBase]: 407/718 cut-off events. [2024-06-28 00:01:53,376 INFO L125 PetriNetUnfolderBase]: For 31892/31892 co-relation queries the response was YES. [2024-06-28 00:01:53,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4803 conditions, 718 events. 407/718 cut-off events. For 31892/31892 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3142 event pairs, 81 based on Foata normal form. 3/719 useless extension candidates. Maximal degree in co-relation 4724. Up to 677 conditions per place. [2024-06-28 00:01:53,384 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 16 changer transitions 0/155 dead transitions. [2024-06-28 00:01:53,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 1762 flow [2024-06-28 00:01:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 00:01:53,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:01:53,385 INFO L175 Difference]: Start difference. First operand has 154 places, 141 transitions, 1390 flow. Second operand 8 states and 93 transitions. [2024-06-28 00:01:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 1762 flow [2024-06-28 00:01:53,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 155 transitions, 1682 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 00:01:53,458 INFO L231 Difference]: Finished difference. Result has 153 places, 144 transitions, 1390 flow [2024-06-28 00:01:53,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1390, PETRI_PLACES=153, PETRI_TRANSITIONS=144} [2024-06-28 00:01:53,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-28 00:01:53,460 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 144 transitions, 1390 flow [2024-06-28 00:01:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:53,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:53,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:53,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:01:53,461 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:53,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash -639370655, now seen corresponding path program 7 times [2024-06-28 00:01:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439728042] [2024-06-28 00:01:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439728042] [2024-06-28 00:01:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439728042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:54,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:54,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348178305] [2024-06-28 00:01:54,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:54,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:54,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:54,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:54,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:54,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 144 transitions, 1390 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:54,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:54,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:54,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:55,227 INFO L124 PetriNetUnfolderBase]: 405/715 cut-off events. [2024-06-28 00:01:55,227 INFO L125 PetriNetUnfolderBase]: For 31304/31304 co-relation queries the response was YES. [2024-06-28 00:01:55,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 715 events. 405/715 cut-off events. For 31304/31304 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3106 event pairs, 85 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 4654. Up to 690 conditions per place. [2024-06-28 00:01:55,234 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 134 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-28 00:01:55,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 151 transitions, 1704 flow [2024-06-28 00:01:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:01:55,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 00:01:55,236 INFO L175 Difference]: Start difference. First operand has 153 places, 144 transitions, 1390 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:01:55,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 151 transitions, 1704 flow [2024-06-28 00:01:55,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1640 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:55,301 INFO L231 Difference]: Finished difference. Result has 154 places, 144 transitions, 1361 flow [2024-06-28 00:01:55,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=154, PETRI_TRANSITIONS=144} [2024-06-28 00:01:55,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 00:01:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 144 transitions, 1361 flow [2024-06-28 00:01:55,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:55,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:55,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:55,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:01:55,303 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:55,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 105027333, now seen corresponding path program 5 times [2024-06-28 00:01:55,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:55,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995099832] [2024-06-28 00:01:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:56,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995099832] [2024-06-28 00:01:56,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995099832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:56,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:56,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:56,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71101942] [2024-06-28 00:01:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:56,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:56,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 144 transitions, 1361 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:56,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:56,981 INFO L124 PetriNetUnfolderBase]: 414/730 cut-off events. [2024-06-28 00:01:56,982 INFO L125 PetriNetUnfolderBase]: For 34449/34449 co-relation queries the response was YES. [2024-06-28 00:01:56,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 730 events. 414/730 cut-off events. For 34449/34449 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3195 event pairs, 79 based on Foata normal form. 3/731 useless extension candidates. Maximal degree in co-relation 4718. Up to 647 conditions per place. [2024-06-28 00:01:56,989 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2024-06-28 00:01:56,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 161 transitions, 1844 flow [2024-06-28 00:01:56,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 00:01:56,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 00:01:56,991 INFO L175 Difference]: Start difference. First operand has 154 places, 144 transitions, 1361 flow. Second operand 8 states and 99 transitions. [2024-06-28 00:01:56,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 161 transitions, 1844 flow [2024-06-28 00:01:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 161 transitions, 1805 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:01:57,089 INFO L231 Difference]: Finished difference. Result has 156 places, 147 transitions, 1422 flow [2024-06-28 00:01:57,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1422, PETRI_PLACES=156, PETRI_TRANSITIONS=147} [2024-06-28 00:01:57,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-28 00:01:57,098 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 147 transitions, 1422 flow [2024-06-28 00:01:57,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:57,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:57,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:57,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:01:57,100 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:57,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash -639363959, now seen corresponding path program 6 times [2024-06-28 00:01:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595513926] [2024-06-28 00:01:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:01:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:01:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:01:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595513926] [2024-06-28 00:01:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595513926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:01:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:01:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:01:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846796522] [2024-06-28 00:01:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:01:58,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:01:58,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:01:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:01:58,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:01:58,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:01:58,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 147 transitions, 1422 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:58,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:01:58,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:01:58,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:01:58,617 INFO L124 PetriNetUnfolderBase]: 421/742 cut-off events. [2024-06-28 00:01:58,617 INFO L125 PetriNetUnfolderBase]: For 35191/35191 co-relation queries the response was YES. [2024-06-28 00:01:58,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 742 events. 421/742 cut-off events. For 35191/35191 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3252 event pairs, 82 based on Foata normal form. 3/743 useless extension candidates. Maximal degree in co-relation 4780. Up to 644 conditions per place. [2024-06-28 00:01:58,624 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 29 changer transitions 0/167 dead transitions. [2024-06-28 00:01:58,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 167 transitions, 1911 flow [2024-06-28 00:01:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:01:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:01:58,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 00:01:58,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 00:01:58,625 INFO L175 Difference]: Start difference. First operand has 156 places, 147 transitions, 1422 flow. Second operand 8 states and 101 transitions. [2024-06-28 00:01:58,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 167 transitions, 1911 flow [2024-06-28 00:01:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 1789 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:01:58,688 INFO L231 Difference]: Finished difference. Result has 159 places, 152 transitions, 1424 flow [2024-06-28 00:01:58,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1424, PETRI_PLACES=159, PETRI_TRANSITIONS=152} [2024-06-28 00:01:58,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-28 00:01:58,689 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 152 transitions, 1424 flow [2024-06-28 00:01:58,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:01:58,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:01:58,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:01:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:01:58,690 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:01:58,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:01:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1687578489, now seen corresponding path program 4 times [2024-06-28 00:01:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:01:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064733531] [2024-06-28 00:01:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:01:58,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:01:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064733531] [2024-06-28 00:02:00,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064733531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:00,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:00,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:00,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321561502] [2024-06-28 00:02:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:00,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:00,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:00,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:00,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:02:00,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 152 transitions, 1424 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:00,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:02:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:00,683 INFO L124 PetriNetUnfolderBase]: 409/734 cut-off events. [2024-06-28 00:02:00,684 INFO L125 PetriNetUnfolderBase]: For 35981/35981 co-relation queries the response was YES. [2024-06-28 00:02:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 734 events. 409/734 cut-off events. For 35981/35981 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3299 event pairs, 40 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 4821. Up to 508 conditions per place. [2024-06-28 00:02:00,690 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 110 selfloop transitions, 38 changer transitions 0/168 dead transitions. [2024-06-28 00:02:00,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 168 transitions, 1860 flow [2024-06-28 00:02:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 00:02:00,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:02:00,692 INFO L175 Difference]: Start difference. First operand has 159 places, 152 transitions, 1424 flow. Second operand 8 states and 112 transitions. [2024-06-28 00:02:00,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 168 transitions, 1860 flow [2024-06-28 00:02:00,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 168 transitions, 1803 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:00,766 INFO L231 Difference]: Finished difference. Result has 162 places, 153 transitions, 1461 flow [2024-06-28 00:02:00,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1461, PETRI_PLACES=162, PETRI_TRANSITIONS=153} [2024-06-28 00:02:00,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-28 00:02:00,767 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 153 transitions, 1461 flow [2024-06-28 00:02:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:00,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:00,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:02:00,768 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:00,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash -667753191, now seen corresponding path program 8 times [2024-06-28 00:02:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132766117] [2024-06-28 00:02:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132766117] [2024-06-28 00:02:02,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132766117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:02,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:02,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453134053] [2024-06-28 00:02:02,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:02,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:02,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:02,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 153 transitions, 1461 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:02,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:02,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:02,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:02,505 INFO L124 PetriNetUnfolderBase]: 428/755 cut-off events. [2024-06-28 00:02:02,505 INFO L125 PetriNetUnfolderBase]: For 36315/36315 co-relation queries the response was YES. [2024-06-28 00:02:02,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5070 conditions, 755 events. 428/755 cut-off events. For 36315/36315 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3346 event pairs, 67 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 4986. Up to 581 conditions per place. [2024-06-28 00:02:02,513 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 112 selfloop transitions, 56 changer transitions 0/170 dead transitions. [2024-06-28 00:02:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 170 transitions, 1955 flow [2024-06-28 00:02:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:02:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:02:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-28 00:02:02,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2024-06-28 00:02:02,515 INFO L175 Difference]: Start difference. First operand has 162 places, 153 transitions, 1461 flow. Second operand 7 states and 102 transitions. [2024-06-28 00:02:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 170 transitions, 1955 flow [2024-06-28 00:02:02,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 170 transitions, 1878 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:02,610 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 1542 flow [2024-06-28 00:02:02,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1542, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2024-06-28 00:02:02,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 00:02:02,611 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 1542 flow [2024-06-28 00:02:02,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:02,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:02,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:02,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:02:02,612 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:02,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1529309035, now seen corresponding path program 5 times [2024-06-28 00:02:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:02,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124759197] [2024-06-28 00:02:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:04,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124759197] [2024-06-28 00:02:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124759197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:04,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:04,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:04,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616759585] [2024-06-28 00:02:04,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:04,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:04,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:04,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:04,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:04,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:02:04,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 1542 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:04,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:04,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:02:04,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:04,892 INFO L124 PetriNetUnfolderBase]: 416/747 cut-off events. [2024-06-28 00:02:04,892 INFO L125 PetriNetUnfolderBase]: For 37712/37712 co-relation queries the response was YES. [2024-06-28 00:02:04,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5061 conditions, 747 events. 416/747 cut-off events. For 37712/37712 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3388 event pairs, 60 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 4978. Up to 586 conditions per place. [2024-06-28 00:02:04,900 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 116 selfloop transitions, 33 changer transitions 0/171 dead transitions. [2024-06-28 00:02:04,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 1885 flow [2024-06-28 00:02:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 00:02:04,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:02:04,902 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 1542 flow. Second operand 8 states and 112 transitions. [2024-06-28 00:02:04,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 1885 flow [2024-06-28 00:02:04,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 171 transitions, 1809 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:04,987 INFO L231 Difference]: Finished difference. Result has 166 places, 158 transitions, 1549 flow [2024-06-28 00:02:04,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1549, PETRI_PLACES=166, PETRI_TRANSITIONS=158} [2024-06-28 00:02:04,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 00:02:04,988 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 158 transitions, 1549 flow [2024-06-28 00:02:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:04,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:04,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:02:04,989 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:04,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:04,989 INFO L85 PathProgramCache]: Analyzing trace with hash -639033861, now seen corresponding path program 9 times [2024-06-28 00:02:04,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911540167] [2024-06-28 00:02:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:06,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911540167] [2024-06-28 00:02:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911540167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:06,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:06,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410851544] [2024-06-28 00:02:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:06,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:06,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:06,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 158 transitions, 1549 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:06,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:06,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:06,879 INFO L124 PetriNetUnfolderBase]: 435/768 cut-off events. [2024-06-28 00:02:06,879 INFO L125 PetriNetUnfolderBase]: For 36324/36324 co-relation queries the response was YES. [2024-06-28 00:02:06,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 768 events. 435/768 cut-off events. For 36324/36324 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3417 event pairs, 63 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 5069. Up to 659 conditions per place. [2024-06-28 00:02:06,886 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 44 changer transitions 0/169 dead transitions. [2024-06-28 00:02:06,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 169 transitions, 1923 flow [2024-06-28 00:02:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:06,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:06,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-28 00:02:06,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-28 00:02:06,888 INFO L175 Difference]: Start difference. First operand has 166 places, 158 transitions, 1549 flow. Second operand 8 states and 105 transitions. [2024-06-28 00:02:06,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 169 transitions, 1923 flow [2024-06-28 00:02:06,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 169 transitions, 1853 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:06,965 INFO L231 Difference]: Finished difference. Result has 167 places, 160 transitions, 1597 flow [2024-06-28 00:02:06,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1597, PETRI_PLACES=167, PETRI_TRANSITIONS=160} [2024-06-28 00:02:06,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-28 00:02:06,966 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 160 transitions, 1597 flow [2024-06-28 00:02:06,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:06,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:06,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:06,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:02:06,966 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:06,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1526512401, now seen corresponding path program 10 times [2024-06-28 00:02:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450675615] [2024-06-28 00:02:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:06,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450675615] [2024-06-28 00:02:08,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450675615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:08,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:08,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:08,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128480696] [2024-06-28 00:02:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:08,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:08,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:08,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:08,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:08,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 160 transitions, 1597 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:08,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:08,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:08,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:08,743 INFO L124 PetriNetUnfolderBase]: 438/773 cut-off events. [2024-06-28 00:02:08,743 INFO L125 PetriNetUnfolderBase]: For 36371/36371 co-relation queries the response was YES. [2024-06-28 00:02:08,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 773 events. 438/773 cut-off events. For 36371/36371 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3451 event pairs, 63 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 5117. Up to 652 conditions per place. [2024-06-28 00:02:08,750 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 50 changer transitions 0/171 dead transitions. [2024-06-28 00:02:08,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 171 transitions, 1979 flow [2024-06-28 00:02:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:02:08,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:02:08,752 INFO L175 Difference]: Start difference. First operand has 167 places, 160 transitions, 1597 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:02:08,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 171 transitions, 1979 flow [2024-06-28 00:02:08,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 1886 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:08,869 INFO L231 Difference]: Finished difference. Result has 168 places, 162 transitions, 1638 flow [2024-06-28 00:02:08,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1638, PETRI_PLACES=168, PETRI_TRANSITIONS=162} [2024-06-28 00:02:08,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 00:02:08,870 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 162 transitions, 1638 flow [2024-06-28 00:02:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:08,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:08,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:02:08,870 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:08,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -667637995, now seen corresponding path program 6 times [2024-06-28 00:02:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400433972] [2024-06-28 00:02:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:08,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:10,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400433972] [2024-06-28 00:02:10,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400433972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:10,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:10,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:10,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582670922] [2024-06-28 00:02:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:10,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:10,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:10,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 00:02:10,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 162 transitions, 1638 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:10,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:10,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 00:02:10,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:10,663 INFO L124 PetriNetUnfolderBase]: 419/752 cut-off events. [2024-06-28 00:02:10,664 INFO L125 PetriNetUnfolderBase]: For 35663/35663 co-relation queries the response was YES. [2024-06-28 00:02:10,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 752 events. 419/752 cut-off events. For 35663/35663 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3405 event pairs, 57 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 4940. Up to 616 conditions per place. [2024-06-28 00:02:10,673 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 118 selfloop transitions, 30 changer transitions 0/172 dead transitions. [2024-06-28 00:02:10,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 172 transitions, 1958 flow [2024-06-28 00:02:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:02:10,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43951612903225806 [2024-06-28 00:02:10,678 INFO L175 Difference]: Start difference. First operand has 168 places, 162 transitions, 1638 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:02:10,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 172 transitions, 1958 flow [2024-06-28 00:02:10,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 172 transitions, 1847 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:10,753 INFO L231 Difference]: Finished difference. Result has 169 places, 162 transitions, 1593 flow [2024-06-28 00:02:10,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1593, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2024-06-28 00:02:10,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 00:02:10,754 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 1593 flow [2024-06-28 00:02:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:10,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:10,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:02:10,755 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:10,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1761776999, now seen corresponding path program 11 times [2024-06-28 00:02:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:10,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345377583] [2024-06-28 00:02:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:12,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:12,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345377583] [2024-06-28 00:02:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345377583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:12,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:12,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:12,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905458684] [2024-06-28 00:02:12,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:12,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:12,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:12,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:12,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 1593 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:12,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:12,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:12,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:12,446 INFO L124 PetriNetUnfolderBase]: 438/774 cut-off events. [2024-06-28 00:02:12,447 INFO L125 PetriNetUnfolderBase]: For 34314/34314 co-relation queries the response was YES. [2024-06-28 00:02:12,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 774 events. 438/774 cut-off events. For 34314/34314 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3465 event pairs, 60 based on Foata normal form. 1/773 useless extension candidates. Maximal degree in co-relation 5016. Up to 626 conditions per place. [2024-06-28 00:02:12,453 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 60 changer transitions 0/180 dead transitions. [2024-06-28 00:02:12,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 180 transitions, 2117 flow [2024-06-28 00:02:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-28 00:02:12,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2024-06-28 00:02:12,454 INFO L175 Difference]: Start difference. First operand has 169 places, 162 transitions, 1593 flow. Second operand 8 states and 114 transitions. [2024-06-28 00:02:12,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 180 transitions, 2117 flow [2024-06-28 00:02:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 180 transitions, 2037 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:12,523 INFO L231 Difference]: Finished difference. Result has 169 places, 164 transitions, 1669 flow [2024-06-28 00:02:12,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1669, PETRI_PLACES=169, PETRI_TRANSITIONS=164} [2024-06-28 00:02:12,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 00:02:12,523 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 164 transitions, 1669 flow [2024-06-28 00:02:12,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:12,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:12,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:02:12,524 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:12,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1785902873, now seen corresponding path program 7 times [2024-06-28 00:02:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038116576] [2024-06-28 00:02:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038116576] [2024-06-28 00:02:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038116576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:13,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:13,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:13,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492399759] [2024-06-28 00:02:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:13,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:13,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:13,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 164 transitions, 1669 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:13,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:13,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:13,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:14,352 INFO L124 PetriNetUnfolderBase]: 441/778 cut-off events. [2024-06-28 00:02:14,352 INFO L125 PetriNetUnfolderBase]: For 34238/34238 co-relation queries the response was YES. [2024-06-28 00:02:14,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5163 conditions, 778 events. 441/778 cut-off events. For 34238/34238 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3492 event pairs, 52 based on Foata normal form. 1/777 useless extension candidates. Maximal degree in co-relation 5079. Up to 622 conditions per place. [2024-06-28 00:02:14,359 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 42 changer transitions 0/183 dead transitions. [2024-06-28 00:02:14,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 183 transitions, 2189 flow [2024-06-28 00:02:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-28 00:02:14,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-28 00:02:14,360 INFO L175 Difference]: Start difference. First operand has 169 places, 164 transitions, 1669 flow. Second operand 8 states and 110 transitions. [2024-06-28 00:02:14,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 183 transitions, 2189 flow [2024-06-28 00:02:14,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 183 transitions, 2038 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:14,434 INFO L231 Difference]: Finished difference. Result has 170 places, 166 transitions, 1619 flow [2024-06-28 00:02:14,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1619, PETRI_PLACES=170, PETRI_TRANSITIONS=166} [2024-06-28 00:02:14,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-28 00:02:14,435 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 166 transitions, 1619 flow [2024-06-28 00:02:14,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:14,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:14,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:02:14,435 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:14,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1785730079, now seen corresponding path program 12 times [2024-06-28 00:02:14,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:14,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324368473] [2024-06-28 00:02:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:14,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324368473] [2024-06-28 00:02:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324368473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:15,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:15,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140671584] [2024-06-28 00:02:15,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:15,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:15,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:15,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:15,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:15,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:15,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 166 transitions, 1619 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:15,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:15,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:15,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:16,059 INFO L124 PetriNetUnfolderBase]: 444/783 cut-off events. [2024-06-28 00:02:16,061 INFO L125 PetriNetUnfolderBase]: For 34322/34322 co-relation queries the response was YES. [2024-06-28 00:02:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5151 conditions, 783 events. 444/783 cut-off events. For 34322/34322 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3506 event pairs, 62 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 5068. Up to 674 conditions per place. [2024-06-28 00:02:16,068 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 134 selfloop transitions, 41 changer transitions 0/177 dead transitions. [2024-06-28 00:02:16,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 177 transitions, 2017 flow [2024-06-28 00:02:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 00:02:16,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:02:16,070 INFO L175 Difference]: Start difference. First operand has 170 places, 166 transitions, 1619 flow. Second operand 8 states and 104 transitions. [2024-06-28 00:02:16,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 177 transitions, 2017 flow [2024-06-28 00:02:16,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 177 transitions, 1929 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:16,152 INFO L231 Difference]: Finished difference. Result has 172 places, 168 transitions, 1651 flow [2024-06-28 00:02:16,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1651, PETRI_PLACES=172, PETRI_TRANSITIONS=168} [2024-06-28 00:02:16,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 00:02:16,153 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 168 transitions, 1651 flow [2024-06-28 00:02:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:16,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:16,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:16,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:02:16,154 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:16,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1785903059, now seen corresponding path program 13 times [2024-06-28 00:02:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331230155] [2024-06-28 00:02:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:18,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331230155] [2024-06-28 00:02:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331230155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465479958] [2024-06-28 00:02:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:18,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:18,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:02:18,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 168 transitions, 1651 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:18,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:02:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:18,564 INFO L124 PetriNetUnfolderBase]: 442/783 cut-off events. [2024-06-28 00:02:18,564 INFO L125 PetriNetUnfolderBase]: For 34639/34639 co-relation queries the response was YES. [2024-06-28 00:02:18,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 783 events. 442/783 cut-off events. For 34639/34639 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3532 event pairs, 72 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 5031. Up to 671 conditions per place. [2024-06-28 00:02:18,573 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 48 changer transitions 0/180 dead transitions. [2024-06-28 00:02:18,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 180 transitions, 2044 flow [2024-06-28 00:02:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:18,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 00:02:18,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 00:02:18,575 INFO L175 Difference]: Start difference. First operand has 172 places, 168 transitions, 1651 flow. Second operand 8 states and 108 transitions. [2024-06-28 00:02:18,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 180 transitions, 2044 flow [2024-06-28 00:02:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 180 transitions, 1939 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:18,671 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 1650 flow [2024-06-28 00:02:18,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1650, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-06-28 00:02:18,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 00:02:18,671 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 1650 flow [2024-06-28 00:02:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:18,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:18,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:02:18,672 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:18,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1785723383, now seen corresponding path program 8 times [2024-06-28 00:02:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914307913] [2024-06-28 00:02:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:18,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914307913] [2024-06-28 00:02:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914307913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:20,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:20,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:20,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844295880] [2024-06-28 00:02:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:20,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:20,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:20,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 1650 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:20,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:20,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:20,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:21,391 INFO L124 PetriNetUnfolderBase]: 445/785 cut-off events. [2024-06-28 00:02:21,391 INFO L125 PetriNetUnfolderBase]: For 34564/34564 co-relation queries the response was YES. [2024-06-28 00:02:21,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 785 events. 445/785 cut-off events. For 34564/34564 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3521 event pairs, 51 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 5040. Up to 628 conditions per place. [2024-06-28 00:02:21,399 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 141 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-06-28 00:02:21,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 186 transitions, 2174 flow [2024-06-28 00:02:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:02:21,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:02:21,401 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 1650 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:02:21,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 186 transitions, 2174 flow [2024-06-28 00:02:21,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 186 transitions, 2025 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:21,487 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 1604 flow [2024-06-28 00:02:21,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1604, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2024-06-28 00:02:21,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 00:02:21,489 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 1604 flow [2024-06-28 00:02:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:21,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:21,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:02:21,490 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:21,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1785729893, now seen corresponding path program 9 times [2024-06-28 00:02:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017959020] [2024-06-28 00:02:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:23,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:23,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017959020] [2024-06-28 00:02:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017959020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:23,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:02:23,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363316358] [2024-06-28 00:02:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:23,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:02:23,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:23,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:02:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:02:23,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:23,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 1604 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:23,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:23,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:23,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:24,243 INFO L124 PetriNetUnfolderBase]: 443/783 cut-off events. [2024-06-28 00:02:24,243 INFO L125 PetriNetUnfolderBase]: For 33593/33593 co-relation queries the response was YES. [2024-06-28 00:02:24,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5004 conditions, 783 events. 443/783 cut-off events. For 33593/33593 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3530 event pairs, 51 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 4921. Up to 626 conditions per place. [2024-06-28 00:02:24,250 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 141 selfloop transitions, 42 changer transitions 0/185 dead transitions. [2024-06-28 00:02:24,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 2022 flow [2024-06-28 00:02:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:02:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:02:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-28 00:02:24,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-28 00:02:24,251 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 1604 flow. Second operand 8 states and 106 transitions. [2024-06-28 00:02:24,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 2022 flow [2024-06-28 00:02:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 185 transitions, 1945 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:24,332 INFO L231 Difference]: Finished difference. Result has 175 places, 170 transitions, 1616 flow [2024-06-28 00:02:24,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1616, PETRI_PLACES=175, PETRI_TRANSITIONS=170} [2024-06-28 00:02:24,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 00:02:24,333 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 170 transitions, 1616 flow [2024-06-28 00:02:24,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:24,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:24,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:24,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:02:24,334 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:24,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1785723135, now seen corresponding path program 2 times [2024-06-28 00:02:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567091726] [2024-06-28 00:02:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567091726] [2024-06-28 00:02:26,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567091726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:26,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:26,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118439932] [2024-06-28 00:02:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:26,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:26,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:26,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 170 transitions, 1616 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:26,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:26,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:26,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:27,420 INFO L124 PetriNetUnfolderBase]: 451/797 cut-off events. [2024-06-28 00:02:27,421 INFO L125 PetriNetUnfolderBase]: For 37464/37464 co-relation queries the response was YES. [2024-06-28 00:02:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5050 conditions, 797 events. 451/797 cut-off events. For 37464/37464 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3588 event pairs, 58 based on Foata normal form. 4/799 useless extension candidates. Maximal degree in co-relation 4966. Up to 560 conditions per place. [2024-06-28 00:02:27,439 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 147 selfloop transitions, 63 changer transitions 0/212 dead transitions. [2024-06-28 00:02:27,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 212 transitions, 2581 flow [2024-06-28 00:02:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:02:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:02:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:02:27,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:02:27,440 INFO L175 Difference]: Start difference. First operand has 175 places, 170 transitions, 1616 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:02:27,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 212 transitions, 2581 flow [2024-06-28 00:02:27,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 212 transitions, 2478 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:27,533 INFO L231 Difference]: Finished difference. Result has 181 places, 191 transitions, 2003 flow [2024-06-28 00:02:27,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2003, PETRI_PLACES=181, PETRI_TRANSITIONS=191} [2024-06-28 00:02:27,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 00:02:27,534 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 191 transitions, 2003 flow [2024-06-28 00:02:27,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:27,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:27,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:27,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:02:27,535 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:27,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:27,535 INFO L85 PathProgramCache]: Analyzing trace with hash -630781919, now seen corresponding path program 1 times [2024-06-28 00:02:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:27,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530957117] [2024-06-28 00:02:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:27,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:30,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:30,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530957117] [2024-06-28 00:02:30,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530957117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:30,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:30,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:30,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107072923] [2024-06-28 00:02:30,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:30,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:30,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:31,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:31,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 191 transitions, 2003 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:31,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:31,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:31,582 INFO L124 PetriNetUnfolderBase]: 448/791 cut-off events. [2024-06-28 00:02:31,582 INFO L125 PetriNetUnfolderBase]: For 37216/37216 co-relation queries the response was YES. [2024-06-28 00:02:31,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5211 conditions, 791 events. 448/791 cut-off events. For 37216/37216 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3542 event pairs, 96 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5123. Up to 760 conditions per place. [2024-06-28 00:02:31,602 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-28 00:02:31,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 200 transitions, 2419 flow [2024-06-28 00:02:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:02:31,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 00:02:31,604 INFO L175 Difference]: Start difference. First operand has 181 places, 191 transitions, 2003 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:02:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 200 transitions, 2419 flow [2024-06-28 00:02:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 2168 flow, removed 106 selfloop flow, removed 5 redundant places. [2024-06-28 00:02:31,680 INFO L231 Difference]: Finished difference. Result has 186 places, 191 transitions, 1788 flow [2024-06-28 00:02:31,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1788, PETRI_PLACES=186, PETRI_TRANSITIONS=191} [2024-06-28 00:02:31,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 00:02:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 191 transitions, 1788 flow [2024-06-28 00:02:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:31,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:31,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:02:31,684 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:31,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 345732563, now seen corresponding path program 1 times [2024-06-28 00:02:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:31,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015906292] [2024-06-28 00:02:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:33,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015906292] [2024-06-28 00:02:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015906292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262489451] [2024-06-28 00:02:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:33,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:33,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:33,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:33,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 191 transitions, 1788 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:33,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:33,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:33,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:34,090 INFO L124 PetriNetUnfolderBase]: 459/813 cut-off events. [2024-06-28 00:02:34,090 INFO L125 PetriNetUnfolderBase]: For 39368/39368 co-relation queries the response was YES. [2024-06-28 00:02:34,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5190 conditions, 813 events. 459/813 cut-off events. For 39368/39368 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3695 event pairs, 95 based on Foata normal form. 2/813 useless extension candidates. Maximal degree in co-relation 5100. Up to 637 conditions per place. [2024-06-28 00:02:34,098 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 41 changer transitions 0/208 dead transitions. [2024-06-28 00:02:34,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 208 transitions, 2356 flow [2024-06-28 00:02:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:02:34,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:02:34,100 INFO L175 Difference]: Start difference. First operand has 186 places, 191 transitions, 1788 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:02:34,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 208 transitions, 2356 flow [2024-06-28 00:02:34,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 208 transitions, 2313 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:34,192 INFO L231 Difference]: Finished difference. Result has 187 places, 193 transitions, 1849 flow [2024-06-28 00:02:34,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1849, PETRI_PLACES=187, PETRI_TRANSITIONS=193} [2024-06-28 00:02:34,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 00:02:34,202 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 193 transitions, 1849 flow [2024-06-28 00:02:34,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:34,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:34,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:34,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:02:34,203 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash -436672820, now seen corresponding path program 1 times [2024-06-28 00:02:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090237736] [2024-06-28 00:02:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:34,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090237736] [2024-06-28 00:02:35,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090237736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:35,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:35,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365384850] [2024-06-28 00:02:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:35,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:35,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:35,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:35,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:35,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 193 transitions, 1849 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:35,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:35,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:35,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:36,382 INFO L124 PetriNetUnfolderBase]: 467/826 cut-off events. [2024-06-28 00:02:36,382 INFO L125 PetriNetUnfolderBase]: For 40824/40824 co-relation queries the response was YES. [2024-06-28 00:02:36,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 826 events. 467/826 cut-off events. For 40824/40824 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3787 event pairs, 90 based on Foata normal form. 1/825 useless extension candidates. Maximal degree in co-relation 5273. Up to 658 conditions per place. [2024-06-28 00:02:36,393 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 170 selfloop transitions, 40 changer transitions 0/212 dead transitions. [2024-06-28 00:02:36,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 212 transitions, 2445 flow [2024-06-28 00:02:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:02:36,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:02:36,395 INFO L175 Difference]: Start difference. First operand has 187 places, 193 transitions, 1849 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:02:36,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 212 transitions, 2445 flow [2024-06-28 00:02:36,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 212 transitions, 2385 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:36,506 INFO L231 Difference]: Finished difference. Result has 191 places, 197 transitions, 1898 flow [2024-06-28 00:02:36,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1898, PETRI_PLACES=191, PETRI_TRANSITIONS=197} [2024-06-28 00:02:36,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 00:02:36,507 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 197 transitions, 1898 flow [2024-06-28 00:02:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:36,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:36,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:36,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:02:36,508 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:36,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 347610233, now seen corresponding path program 2 times [2024-06-28 00:02:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183169133] [2024-06-28 00:02:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:38,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183169133] [2024-06-28 00:02:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183169133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858166528] [2024-06-28 00:02:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:38,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:38,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 197 transitions, 1898 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:38,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:38,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:38,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:38,905 INFO L124 PetriNetUnfolderBase]: 471/834 cut-off events. [2024-06-28 00:02:38,905 INFO L125 PetriNetUnfolderBase]: For 43819/43819 co-relation queries the response was YES. [2024-06-28 00:02:38,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5498 conditions, 834 events. 471/834 cut-off events. For 43819/43819 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3819 event pairs, 103 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5406. Up to 729 conditions per place. [2024-06-28 00:02:38,915 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 40 changer transitions 0/209 dead transitions. [2024-06-28 00:02:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 209 transitions, 2346 flow [2024-06-28 00:02:38,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:02:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:02:38,928 INFO L175 Difference]: Start difference. First operand has 191 places, 197 transitions, 1898 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:02:38,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 209 transitions, 2346 flow [2024-06-28 00:02:39,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 209 transitions, 2300 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:39,100 INFO L231 Difference]: Finished difference. Result has 194 places, 198 transitions, 1944 flow [2024-06-28 00:02:39,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=194, PETRI_TRANSITIONS=198} [2024-06-28 00:02:39,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-28 00:02:39,102 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 198 transitions, 1944 flow [2024-06-28 00:02:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:02:39,103 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:39,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash -436676695, now seen corresponding path program 3 times [2024-06-28 00:02:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496643038] [2024-06-28 00:02:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:41,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496643038] [2024-06-28 00:02:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496643038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:41,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:41,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:41,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498113005] [2024-06-28 00:02:41,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:41,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:41,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:41,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:41,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:41,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:41,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 198 transitions, 1944 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:41,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:41,606 INFO L124 PetriNetUnfolderBase]: 475/842 cut-off events. [2024-06-28 00:02:41,607 INFO L125 PetriNetUnfolderBase]: For 45392/45392 co-relation queries the response was YES. [2024-06-28 00:02:41,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 842 events. 475/842 cut-off events. For 45392/45392 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3884 event pairs, 101 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 5533. Up to 723 conditions per place. [2024-06-28 00:02:41,617 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 41 changer transitions 0/211 dead transitions. [2024-06-28 00:02:41,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 211 transitions, 2400 flow [2024-06-28 00:02:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:02:41,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:02:41,619 INFO L175 Difference]: Start difference. First operand has 194 places, 198 transitions, 1944 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:02:41,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 211 transitions, 2400 flow [2024-06-28 00:02:41,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 211 transitions, 2320 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:41,741 INFO L231 Difference]: Finished difference. Result has 197 places, 199 transitions, 1960 flow [2024-06-28 00:02:41,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1960, PETRI_PLACES=197, PETRI_TRANSITIONS=199} [2024-06-28 00:02:41,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 00:02:41,742 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 199 transitions, 1960 flow [2024-06-28 00:02:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:41,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:02:41,743 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:41,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -432948170, now seen corresponding path program 2 times [2024-06-28 00:02:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899330753] [2024-06-28 00:02:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:43,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:43,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899330753] [2024-06-28 00:02:43,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899330753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:43,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:43,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:43,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854628531] [2024-06-28 00:02:43,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:43,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:43,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:43,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:43,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:43,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 199 transitions, 1960 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:43,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:43,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:43,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:43,933 INFO L124 PetriNetUnfolderBase]: 478/847 cut-off events. [2024-06-28 00:02:43,934 INFO L125 PetriNetUnfolderBase]: For 45585/45585 co-relation queries the response was YES. [2024-06-28 00:02:43,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 847 events. 478/847 cut-off events. For 45585/45585 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3930 event pairs, 94 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 5593. Up to 742 conditions per place. [2024-06-28 00:02:43,944 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 33 changer transitions 0/215 dead transitions. [2024-06-28 00:02:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 215 transitions, 2450 flow [2024-06-28 00:02:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 00:02:43,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:02:43,946 INFO L175 Difference]: Start difference. First operand has 197 places, 199 transitions, 1960 flow. Second operand 9 states and 108 transitions. [2024-06-28 00:02:43,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 215 transitions, 2450 flow [2024-06-28 00:02:44,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 215 transitions, 2366 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:44,078 INFO L231 Difference]: Finished difference. Result has 199 places, 203 transitions, 1981 flow [2024-06-28 00:02:44,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1981, PETRI_PLACES=199, PETRI_TRANSITIONS=203} [2024-06-28 00:02:44,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 00:02:44,079 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 203 transitions, 1981 flow [2024-06-28 00:02:44,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:44,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:44,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:02:44,080 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:44,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash -425022983, now seen corresponding path program 4 times [2024-06-28 00:02:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063100318] [2024-06-28 00:02:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:46,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:46,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063100318] [2024-06-28 00:02:46,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063100318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:46,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:46,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:46,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627759695] [2024-06-28 00:02:46,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:46,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:46,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:46,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:46,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 203 transitions, 1981 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:46,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:46,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:46,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:46,659 INFO L124 PetriNetUnfolderBase]: 482/855 cut-off events. [2024-06-28 00:02:46,659 INFO L125 PetriNetUnfolderBase]: For 48730/48730 co-relation queries the response was YES. [2024-06-28 00:02:46,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5763 conditions, 855 events. 482/855 cut-off events. For 48730/48730 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3983 event pairs, 103 based on Foata normal form. 2/855 useless extension candidates. Maximal degree in co-relation 5666. Up to 782 conditions per place. [2024-06-28 00:02:46,669 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 28 changer transitions 0/214 dead transitions. [2024-06-28 00:02:46,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 214 transitions, 2439 flow [2024-06-28 00:02:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:02:46,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 00:02:46,670 INFO L175 Difference]: Start difference. First operand has 199 places, 203 transitions, 1981 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:02:46,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 214 transitions, 2439 flow [2024-06-28 00:02:46,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 214 transitions, 2377 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:46,779 INFO L231 Difference]: Finished difference. Result has 203 places, 204 transitions, 1991 flow [2024-06-28 00:02:46,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1991, PETRI_PLACES=203, PETRI_TRANSITIONS=204} [2024-06-28 00:02:46,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 00:02:46,780 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 204 transitions, 1991 flow [2024-06-28 00:02:46,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:46,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:46,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:46,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:02:46,781 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:46,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash -273314156, now seen corresponding path program 3 times [2024-06-28 00:02:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:46,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078032162] [2024-06-28 00:02:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:46,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:48,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:48,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078032162] [2024-06-28 00:02:48,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078032162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:48,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:48,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:48,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879425018] [2024-06-28 00:02:48,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:48,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:48,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:48,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:48,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:48,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:48,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 204 transitions, 1991 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:48,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:48,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:48,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:49,248 INFO L124 PetriNetUnfolderBase]: 485/860 cut-off events. [2024-06-28 00:02:49,249 INFO L125 PetriNetUnfolderBase]: For 48733/48733 co-relation queries the response was YES. [2024-06-28 00:02:49,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 860 events. 485/860 cut-off events. For 48733/48733 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4017 event pairs, 96 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 5708. Up to 749 conditions per place. [2024-06-28 00:02:49,258 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 36 changer transitions 0/218 dead transitions. [2024-06-28 00:02:49,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 218 transitions, 2479 flow [2024-06-28 00:02:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:02:49,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:02:49,260 INFO L175 Difference]: Start difference. First operand has 203 places, 204 transitions, 1991 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:02:49,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 218 transitions, 2479 flow [2024-06-28 00:02:49,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 218 transitions, 2419 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:49,405 INFO L231 Difference]: Finished difference. Result has 205 places, 206 transitions, 2028 flow [2024-06-28 00:02:49,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2028, PETRI_PLACES=205, PETRI_TRANSITIONS=206} [2024-06-28 00:02:49,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 00:02:49,406 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 206 transitions, 2028 flow [2024-06-28 00:02:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:49,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:49,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:02:49,407 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash -273462181, now seen corresponding path program 5 times [2024-06-28 00:02:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:49,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964644322] [2024-06-28 00:02:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:51,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964644322] [2024-06-28 00:02:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964644322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:51,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182769375] [2024-06-28 00:02:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:51,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:51,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:51,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:51,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 206 transitions, 2028 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:51,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:51,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:51,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:52,000 INFO L124 PetriNetUnfolderBase]: 496/881 cut-off events. [2024-06-28 00:02:52,000 INFO L125 PetriNetUnfolderBase]: For 55528/55528 co-relation queries the response was YES. [2024-06-28 00:02:52,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6073 conditions, 881 events. 496/881 cut-off events. For 55528/55528 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4143 event pairs, 104 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 5974. Up to 779 conditions per place. [2024-06-28 00:02:52,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 33 changer transitions 0/220 dead transitions. [2024-06-28 00:02:52,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 220 transitions, 2632 flow [2024-06-28 00:02:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:02:52,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 00:02:52,012 INFO L175 Difference]: Start difference. First operand has 205 places, 206 transitions, 2028 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:02:52,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 220 transitions, 2632 flow [2024-06-28 00:02:52,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 220 transitions, 2555 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:02:52,166 INFO L231 Difference]: Finished difference. Result has 207 places, 208 transitions, 2047 flow [2024-06-28 00:02:52,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2047, PETRI_PLACES=207, PETRI_TRANSITIONS=208} [2024-06-28 00:02:52,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 00:02:52,167 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 208 transitions, 2047 flow [2024-06-28 00:02:52,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:52,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:52,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:02:52,168 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:52,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 434302043, now seen corresponding path program 6 times [2024-06-28 00:02:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320548601] [2024-06-28 00:02:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:53,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320548601] [2024-06-28 00:02:53,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320548601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:53,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:53,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051415264] [2024-06-28 00:02:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:53,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:53,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:54,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:54,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 208 transitions, 2047 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:54,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:54,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:54,479 INFO L124 PetriNetUnfolderBase]: 493/876 cut-off events. [2024-06-28 00:02:54,480 INFO L125 PetriNetUnfolderBase]: For 53994/53994 co-relation queries the response was YES. [2024-06-28 00:02:54,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 876 events. 493/876 cut-off events. For 53994/53994 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4115 event pairs, 105 based on Foata normal form. 2/876 useless extension candidates. Maximal degree in co-relation 5854. Up to 797 conditions per place. [2024-06-28 00:02:54,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 31 changer transitions 0/218 dead transitions. [2024-06-28 00:02:54,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 218 transitions, 2503 flow [2024-06-28 00:02:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:02:54,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:02:54,491 INFO L175 Difference]: Start difference. First operand has 207 places, 208 transitions, 2047 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:02:54,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 218 transitions, 2503 flow [2024-06-28 00:02:54,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 218 transitions, 2449 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:02:54,655 INFO L231 Difference]: Finished difference. Result has 211 places, 208 transitions, 2059 flow [2024-06-28 00:02:54,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=211, PETRI_TRANSITIONS=208} [2024-06-28 00:02:54,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 00:02:54,656 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 208 transitions, 2059 flow [2024-06-28 00:02:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:54,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:54,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:54,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:02:54,657 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:54,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:54,658 INFO L85 PathProgramCache]: Analyzing trace with hash -273458306, now seen corresponding path program 4 times [2024-06-28 00:02:54,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:54,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066985018] [2024-06-28 00:02:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:54,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:56,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:56,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066985018] [2024-06-28 00:02:56,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066985018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:56,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:56,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:02:56,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853072432] [2024-06-28 00:02:56,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:56,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:02:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:56,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:02:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:02:56,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:56,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 208 transitions, 2059 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:56,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:56,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:56,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:56,763 INFO L124 PetriNetUnfolderBase]: 496/881 cut-off events. [2024-06-28 00:02:56,764 INFO L125 PetriNetUnfolderBase]: For 53894/53894 co-relation queries the response was YES. [2024-06-28 00:02:56,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6031 conditions, 881 events. 496/881 cut-off events. For 53894/53894 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4159 event pairs, 98 based on Foata normal form. 1/880 useless extension candidates. Maximal degree in co-relation 5929. Up to 761 conditions per place. [2024-06-28 00:02:56,773 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 40 changer transitions 0/222 dead transitions. [2024-06-28 00:02:56,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 222 transitions, 2559 flow [2024-06-28 00:02:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:02:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:02:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 00:02:56,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 00:02:56,775 INFO L175 Difference]: Start difference. First operand has 211 places, 208 transitions, 2059 flow. Second operand 9 states and 110 transitions. [2024-06-28 00:02:56,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 222 transitions, 2559 flow [2024-06-28 00:02:56,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 222 transitions, 2491 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:02:56,917 INFO L231 Difference]: Finished difference. Result has 211 places, 210 transitions, 2100 flow [2024-06-28 00:02:56,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2100, PETRI_PLACES=211, PETRI_TRANSITIONS=210} [2024-06-28 00:02:56,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 00:02:56,918 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 210 transitions, 2100 flow [2024-06-28 00:02:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:56,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:56,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:02:56,919 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:56,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash -994403207, now seen corresponding path program 7 times [2024-06-28 00:02:56,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398281924] [2024-06-28 00:02:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:02:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:02:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:02:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398281924] [2024-06-28 00:02:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398281924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:02:58,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:02:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:02:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56523812] [2024-06-28 00:02:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:02:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:02:58,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:02:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:02:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:02:59,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:02:59,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 210 transitions, 2100 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:02:59,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:02:59,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:02:59,478 INFO L124 PetriNetUnfolderBase]: 500/889 cut-off events. [2024-06-28 00:02:59,478 INFO L125 PetriNetUnfolderBase]: For 57646/57646 co-relation queries the response was YES. [2024-06-28 00:02:59,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6134 conditions, 889 events. 500/889 cut-off events. For 57646/57646 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4212 event pairs, 99 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 6031. Up to 766 conditions per place. [2024-06-28 00:02:59,486 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 41 changer transitions 0/226 dead transitions. [2024-06-28 00:02:59,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 226 transitions, 2724 flow [2024-06-28 00:02:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:02:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:02:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:02:59,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 00:02:59,488 INFO L175 Difference]: Start difference. First operand has 211 places, 210 transitions, 2100 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:02:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 226 transitions, 2724 flow [2024-06-28 00:02:59,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 226 transitions, 2635 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:02:59,605 INFO L231 Difference]: Finished difference. Result has 214 places, 211 transitions, 2111 flow [2024-06-28 00:02:59,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2111, PETRI_PLACES=214, PETRI_TRANSITIONS=211} [2024-06-28 00:02:59,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 00:02:59,606 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 211 transitions, 2111 flow [2024-06-28 00:02:59,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:02:59,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:02:59,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:02:59,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:02:59,607 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:02:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:02:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -994399487, now seen corresponding path program 8 times [2024-06-28 00:02:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:02:59,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175208121] [2024-06-28 00:02:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:02:59,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:02:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:01,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:01,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175208121] [2024-06-28 00:03:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175208121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:01,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:01,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:01,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540557952] [2024-06-28 00:03:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:01,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:01,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:01,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:01,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 211 transitions, 2111 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:01,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:01,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:02,043 INFO L124 PetriNetUnfolderBase]: 504/897 cut-off events. [2024-06-28 00:03:02,043 INFO L125 PetriNetUnfolderBase]: For 59566/59566 co-relation queries the response was YES. [2024-06-28 00:03:02,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 897 events. 504/897 cut-off events. For 59566/59566 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4271 event pairs, 105 based on Foata normal form. 2/897 useless extension candidates. Maximal degree in co-relation 6097. Up to 807 conditions per place. [2024-06-28 00:03:02,052 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 39 changer transitions 0/224 dead transitions. [2024-06-28 00:03:02,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 224 transitions, 2603 flow [2024-06-28 00:03:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 00:03:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:03:02,071 INFO L175 Difference]: Start difference. First operand has 214 places, 211 transitions, 2111 flow. Second operand 10 states and 115 transitions. [2024-06-28 00:03:02,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 224 transitions, 2603 flow [2024-06-28 00:03:02,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 2479 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:02,191 INFO L231 Difference]: Finished difference. Result has 215 places, 212 transitions, 2087 flow [2024-06-28 00:03:02,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2087, PETRI_PLACES=215, PETRI_TRANSITIONS=212} [2024-06-28 00:03:02,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-28 00:03:02,192 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 212 transitions, 2087 flow [2024-06-28 00:03:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:02,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:02,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:03:02,193 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:02,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -994399332, now seen corresponding path program 5 times [2024-06-28 00:03:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806903103] [2024-06-28 00:03:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806903103] [2024-06-28 00:03:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806903103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:03,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096576921] [2024-06-28 00:03:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:03,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:03,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:03,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:03,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 212 transitions, 2087 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:03,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:03,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:03,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:04,237 INFO L124 PetriNetUnfolderBase]: 507/902 cut-off events. [2024-06-28 00:03:04,238 INFO L125 PetriNetUnfolderBase]: For 59315/59315 co-relation queries the response was YES. [2024-06-28 00:03:04,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6172 conditions, 902 events. 507/902 cut-off events. For 59315/59315 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4305 event pairs, 102 based on Foata normal form. 1/901 useless extension candidates. Maximal degree in co-relation 6068. Up to 757 conditions per place. [2024-06-28 00:03:04,247 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 48 changer transitions 0/230 dead transitions. [2024-06-28 00:03:04,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 230 transitions, 2749 flow [2024-06-28 00:03:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:03:04,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:03:04,253 INFO L175 Difference]: Start difference. First operand has 215 places, 212 transitions, 2087 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:03:04,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 230 transitions, 2749 flow [2024-06-28 00:03:04,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 230 transitions, 2665 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:04,422 INFO L231 Difference]: Finished difference. Result has 217 places, 218 transitions, 2178 flow [2024-06-28 00:03:04,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2178, PETRI_PLACES=217, PETRI_TRANSITIONS=218} [2024-06-28 00:03:04,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-28 00:03:04,423 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 218 transitions, 2178 flow [2024-06-28 00:03:04,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:04,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:04,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:04,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:03:04,424 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:04,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:04,424 INFO L85 PathProgramCache]: Analyzing trace with hash -994249602, now seen corresponding path program 6 times [2024-06-28 00:03:04,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:04,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812677635] [2024-06-28 00:03:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:04,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812677635] [2024-06-28 00:03:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812677635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:06,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:06,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:06,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394597547] [2024-06-28 00:03:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:06,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:06,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:06,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:06,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:06,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:06,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 218 transitions, 2178 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:06,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:06,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:06,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:06,864 INFO L124 PetriNetUnfolderBase]: 516/917 cut-off events. [2024-06-28 00:03:06,865 INFO L125 PetriNetUnfolderBase]: For 65353/65353 co-relation queries the response was YES. [2024-06-28 00:03:06,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6353 conditions, 917 events. 516/917 cut-off events. For 65353/65353 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4398 event pairs, 94 based on Foata normal form. 3/918 useless extension candidates. Maximal degree in co-relation 6247. Up to 702 conditions per place. [2024-06-28 00:03:06,875 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 163 selfloop transitions, 73 changer transitions 0/238 dead transitions. [2024-06-28 00:03:06,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 238 transitions, 2882 flow [2024-06-28 00:03:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 00:03:06,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:03:06,877 INFO L175 Difference]: Start difference. First operand has 217 places, 218 transitions, 2178 flow. Second operand 10 states and 125 transitions. [2024-06-28 00:03:06,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 238 transitions, 2882 flow [2024-06-28 00:03:07,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 238 transitions, 2796 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:07,040 INFO L231 Difference]: Finished difference. Result has 223 places, 223 transitions, 2341 flow [2024-06-28 00:03:07,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2341, PETRI_PLACES=223, PETRI_TRANSITIONS=223} [2024-06-28 00:03:07,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 00:03:07,040 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 223 transitions, 2341 flow [2024-06-28 00:03:07,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:07,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:07,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:07,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:03:07,041 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:07,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1525004101, now seen corresponding path program 9 times [2024-06-28 00:03:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642028592] [2024-06-28 00:03:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:08,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642028592] [2024-06-28 00:03:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642028592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584634662] [2024-06-28 00:03:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:08,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:08,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 223 transitions, 2341 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:08,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:08,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:08,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:09,198 INFO L124 PetriNetUnfolderBase]: 520/925 cut-off events. [2024-06-28 00:03:09,199 INFO L125 PetriNetUnfolderBase]: For 65590/65590 co-relation queries the response was YES. [2024-06-28 00:03:09,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 925 events. 520/925 cut-off events. For 65590/65590 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4450 event pairs, 99 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 6477. Up to 852 conditions per place. [2024-06-28 00:03:09,210 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 31 changer transitions 0/235 dead transitions. [2024-06-28 00:03:09,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 235 transitions, 2849 flow [2024-06-28 00:03:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 00:03:09,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 00:03:09,212 INFO L175 Difference]: Start difference. First operand has 223 places, 223 transitions, 2341 flow. Second operand 9 states and 106 transitions. [2024-06-28 00:03:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 235 transitions, 2849 flow [2024-06-28 00:03:09,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 235 transitions, 2763 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:09,371 INFO L231 Difference]: Finished difference. Result has 227 places, 224 transitions, 2337 flow [2024-06-28 00:03:09,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2255, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2337, PETRI_PLACES=227, PETRI_TRANSITIONS=224} [2024-06-28 00:03:09,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-28 00:03:09,372 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 224 transitions, 2337 flow [2024-06-28 00:03:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:09,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:09,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:09,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:03:09,373 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:09,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash -994255182, now seen corresponding path program 7 times [2024-06-28 00:03:09,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:09,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189218676] [2024-06-28 00:03:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:09,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:11,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:11,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189218676] [2024-06-28 00:03:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189218676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227102395] [2024-06-28 00:03:11,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:11,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:11,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:11,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 224 transitions, 2337 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:11,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:11,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:11,662 INFO L124 PetriNetUnfolderBase]: 523/930 cut-off events. [2024-06-28 00:03:11,662 INFO L125 PetriNetUnfolderBase]: For 65484/65484 co-relation queries the response was YES. [2024-06-28 00:03:11,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6590 conditions, 930 events. 523/930 cut-off events. For 65484/65484 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4485 event pairs, 98 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 6481. Up to 819 conditions per place. [2024-06-28 00:03:11,671 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 191 selfloop transitions, 44 changer transitions 0/237 dead transitions. [2024-06-28 00:03:11,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 237 transitions, 2868 flow [2024-06-28 00:03:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:03:11,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:03:11,673 INFO L175 Difference]: Start difference. First operand has 227 places, 224 transitions, 2337 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:03:11,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 237 transitions, 2868 flow [2024-06-28 00:03:11,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 237 transitions, 2798 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:11,805 INFO L231 Difference]: Finished difference. Result has 230 places, 227 transitions, 2399 flow [2024-06-28 00:03:11,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2399, PETRI_PLACES=230, PETRI_TRANSITIONS=227} [2024-06-28 00:03:11,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 00:03:11,806 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 227 transitions, 2399 flow [2024-06-28 00:03:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:11,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:11,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:11,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:03:11,807 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:11,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash -280924908, now seen corresponding path program 8 times [2024-06-28 00:03:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:11,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328430518] [2024-06-28 00:03:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:11,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328430518] [2024-06-28 00:03:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328430518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70595592] [2024-06-28 00:03:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:13,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:13,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 227 transitions, 2399 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:13,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:13,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:13,859 INFO L124 PetriNetUnfolderBase]: 532/945 cut-off events. [2024-06-28 00:03:13,859 INFO L125 PetriNetUnfolderBase]: For 71983/71983 co-relation queries the response was YES. [2024-06-28 00:03:13,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 945 events. 532/945 cut-off events. For 71983/71983 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4582 event pairs, 99 based on Foata normal form. 3/946 useless extension candidates. Maximal degree in co-relation 6627. Up to 730 conditions per place. [2024-06-28 00:03:13,867 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 179 selfloop transitions, 66 changer transitions 0/247 dead transitions. [2024-06-28 00:03:13,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 247 transitions, 3147 flow [2024-06-28 00:03:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:03:13,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:03:13,868 INFO L175 Difference]: Start difference. First operand has 230 places, 227 transitions, 2399 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:03:13,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 247 transitions, 3147 flow [2024-06-28 00:03:13,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 247 transitions, 3044 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:13,994 INFO L231 Difference]: Finished difference. Result has 233 places, 231 transitions, 2507 flow [2024-06-28 00:03:13,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2507, PETRI_PLACES=233, PETRI_TRANSITIONS=231} [2024-06-28 00:03:13,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 00:03:13,995 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 231 transitions, 2507 flow [2024-06-28 00:03:13,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:13,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:13,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:03:13,995 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:13,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash -281132298, now seen corresponding path program 9 times [2024-06-28 00:03:13,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:13,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796914210] [2024-06-28 00:03:13,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:13,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:15,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796914210] [2024-06-28 00:03:15,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796914210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:15,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:15,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:15,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939594853] [2024-06-28 00:03:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:15,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:15,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 231 transitions, 2507 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:15,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:15,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:15,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:16,070 INFO L124 PetriNetUnfolderBase]: 540/958 cut-off events. [2024-06-28 00:03:16,071 INFO L125 PetriNetUnfolderBase]: For 72065/72065 co-relation queries the response was YES. [2024-06-28 00:03:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 958 events. 540/958 cut-off events. For 72065/72065 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4642 event pairs, 100 based on Foata normal form. 1/957 useless extension candidates. Maximal degree in co-relation 6904. Up to 843 conditions per place. [2024-06-28 00:03:16,080 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 43 changer transitions 0/247 dead transitions. [2024-06-28 00:03:16,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 247 transitions, 3244 flow [2024-06-28 00:03:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:03:16,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:03:16,082 INFO L175 Difference]: Start difference. First operand has 233 places, 231 transitions, 2507 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:03:16,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 247 transitions, 3244 flow [2024-06-28 00:03:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 247 transitions, 3079 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:16,227 INFO L231 Difference]: Finished difference. Result has 236 places, 237 transitions, 2524 flow [2024-06-28 00:03:16,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2524, PETRI_PLACES=236, PETRI_TRANSITIONS=237} [2024-06-28 00:03:16,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 00:03:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 237 transitions, 2524 flow [2024-06-28 00:03:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:16,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:16,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:03:16,228 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:16,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -988887222, now seen corresponding path program 10 times [2024-06-28 00:03:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871906738] [2024-06-28 00:03:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:17,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:17,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:17,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871906738] [2024-06-28 00:03:17,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871906738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:17,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:17,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:17,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712841692] [2024-06-28 00:03:17,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:17,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:18,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:18,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 237 transitions, 2524 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:18,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:18,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:18,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:18,593 INFO L124 PetriNetUnfolderBase]: 544/965 cut-off events. [2024-06-28 00:03:18,593 INFO L125 PetriNetUnfolderBase]: For 76264/76264 co-relation queries the response was YES. [2024-06-28 00:03:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 965 events. 544/965 cut-off events. For 76264/76264 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4685 event pairs, 99 based on Foata normal form. 3/966 useless extension candidates. Maximal degree in co-relation 6821. Up to 750 conditions per place. [2024-06-28 00:03:18,605 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 187 selfloop transitions, 65 changer transitions 0/254 dead transitions. [2024-06-28 00:03:18,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 254 transitions, 3248 flow [2024-06-28 00:03:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 00:03:18,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 00:03:18,607 INFO L175 Difference]: Start difference. First operand has 236 places, 237 transitions, 2524 flow. Second operand 10 states and 126 transitions. [2024-06-28 00:03:18,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 254 transitions, 3248 flow [2024-06-28 00:03:18,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 254 transitions, 3187 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:18,801 INFO L231 Difference]: Finished difference. Result has 243 places, 239 transitions, 2634 flow [2024-06-28 00:03:18,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2634, PETRI_PLACES=243, PETRI_TRANSITIONS=239} [2024-06-28 00:03:18,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-28 00:03:18,802 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 239 transitions, 2634 flow [2024-06-28 00:03:18,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:18,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:18,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:18,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:03:18,803 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:18,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:18,803 INFO L85 PathProgramCache]: Analyzing trace with hash -988892957, now seen corresponding path program 10 times [2024-06-28 00:03:18,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:18,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252456069] [2024-06-28 00:03:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:18,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:20,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:20,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252456069] [2024-06-28 00:03:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252456069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:20,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:20,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760056765] [2024-06-28 00:03:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:20,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:20,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:20,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 239 transitions, 2634 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:20,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:20,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:21,222 INFO L124 PetriNetUnfolderBase]: 548/973 cut-off events. [2024-06-28 00:03:21,223 INFO L125 PetriNetUnfolderBase]: For 76236/76236 co-relation queries the response was YES. [2024-06-28 00:03:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7135 conditions, 973 events. 548/973 cut-off events. For 76236/76236 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4755 event pairs, 97 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 7021. Up to 900 conditions per place. [2024-06-28 00:03:21,234 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 28 changer transitions 0/250 dead transitions. [2024-06-28 00:03:21,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 250 transitions, 3170 flow [2024-06-28 00:03:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:03:21,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 00:03:21,236 INFO L175 Difference]: Start difference. First operand has 243 places, 239 transitions, 2634 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:03:21,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 250 transitions, 3170 flow [2024-06-28 00:03:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 3021 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:21,471 INFO L231 Difference]: Finished difference. Result has 244 places, 240 transitions, 2563 flow [2024-06-28 00:03:21,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2563, PETRI_PLACES=244, PETRI_TRANSITIONS=240} [2024-06-28 00:03:21,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-28 00:03:21,483 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 240 transitions, 2563 flow [2024-06-28 00:03:21,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:21,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:21,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:03:21,484 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:21,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1654554584, now seen corresponding path program 11 times [2024-06-28 00:03:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146743321] [2024-06-28 00:03:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:23,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146743321] [2024-06-28 00:03:23,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146743321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:23,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:23,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529020173] [2024-06-28 00:03:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:23,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:23,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:23,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:23,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 240 transitions, 2563 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:23,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:23,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:23,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:23,665 INFO L124 PetriNetUnfolderBase]: 551/977 cut-off events. [2024-06-28 00:03:23,666 INFO L125 PetriNetUnfolderBase]: For 75470/75470 co-relation queries the response was YES. [2024-06-28 00:03:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7110 conditions, 977 events. 551/977 cut-off events. For 75470/75470 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4780 event pairs, 96 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 6995. Up to 934 conditions per place. [2024-06-28 00:03:23,677 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 227 selfloop transitions, 24 changer transitions 0/253 dead transitions. [2024-06-28 00:03:23,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 253 transitions, 3151 flow [2024-06-28 00:03:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:03:23,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:03:23,681 INFO L175 Difference]: Start difference. First operand has 244 places, 240 transitions, 2563 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:03:23,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 253 transitions, 3151 flow [2024-06-28 00:03:23,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 253 transitions, 3085 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:23,932 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 2622 flow [2024-06-28 00:03:23,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2622, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2024-06-28 00:03:23,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 00:03:23,933 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 2622 flow [2024-06-28 00:03:23,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:23,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:23,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:03:23,934 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:23,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1920259521, now seen corresponding path program 1 times [2024-06-28 00:03:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:23,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877161617] [2024-06-28 00:03:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877161617] [2024-06-28 00:03:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877161617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715605552] [2024-06-28 00:03:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:25,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:26,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:26,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 2622 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:26,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:26,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:26,522 INFO L124 PetriNetUnfolderBase]: 545/968 cut-off events. [2024-06-28 00:03:26,522 INFO L125 PetriNetUnfolderBase]: For 74785/74785 co-relation queries the response was YES. [2024-06-28 00:03:26,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 968 events. 545/968 cut-off events. For 74785/74785 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4732 event pairs, 93 based on Foata normal form. 3/969 useless extension candidates. Maximal degree in co-relation 6730. Up to 923 conditions per place. [2024-06-28 00:03:26,536 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 23 changer transitions 0/257 dead transitions. [2024-06-28 00:03:26,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 3190 flow [2024-06-28 00:03:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:26,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:03:26,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:03:26,537 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 2622 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:03:26,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 3190 flow [2024-06-28 00:03:26,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 257 transitions, 3108 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:26,788 INFO L231 Difference]: Finished difference. Result has 251 places, 247 transitions, 2629 flow [2024-06-28 00:03:26,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2540, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2629, PETRI_PLACES=251, PETRI_TRANSITIONS=247} [2024-06-28 00:03:26,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 00:03:26,789 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 247 transitions, 2629 flow [2024-06-28 00:03:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:26,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:03:26,790 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:26,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1654352774, now seen corresponding path program 12 times [2024-06-28 00:03:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399576107] [2024-06-28 00:03:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399576107] [2024-06-28 00:03:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399576107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803018911] [2024-06-28 00:03:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:28,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:28,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:28,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 247 transitions, 2629 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:28,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:28,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:28,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:28,879 INFO L124 PetriNetUnfolderBase]: 548/973 cut-off events. [2024-06-28 00:03:28,880 INFO L125 PetriNetUnfolderBase]: For 71324/71324 co-relation queries the response was YES. [2024-06-28 00:03:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6914 conditions, 973 events. 548/973 cut-off events. For 71324/71324 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4776 event pairs, 97 based on Foata normal form. 1/972 useless extension candidates. Maximal degree in co-relation 6797. Up to 930 conditions per place. [2024-06-28 00:03:28,892 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 25 changer transitions 0/257 dead transitions. [2024-06-28 00:03:28,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 257 transitions, 3201 flow [2024-06-28 00:03:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:03:28,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 00:03:28,896 INFO L175 Difference]: Start difference. First operand has 251 places, 247 transitions, 2629 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:03:28,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 257 transitions, 3201 flow [2024-06-28 00:03:29,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 257 transitions, 3130 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:29,140 INFO L231 Difference]: Finished difference. Result has 252 places, 249 transitions, 2661 flow [2024-06-28 00:03:29,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2661, PETRI_PLACES=252, PETRI_TRANSITIONS=249} [2024-06-28 00:03:29,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 00:03:29,141 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 249 transitions, 2661 flow [2024-06-28 00:03:29,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:29,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:29,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:29,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:03:29,142 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:29,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:29,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1911055094, now seen corresponding path program 13 times [2024-06-28 00:03:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667794306] [2024-06-28 00:03:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:29,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:30,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667794306] [2024-06-28 00:03:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667794306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:30,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:30,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226815591] [2024-06-28 00:03:30,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:30,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:30,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:30,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:30,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 249 transitions, 2661 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:30,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:30,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:30,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:31,268 INFO L124 PetriNetUnfolderBase]: 551/978 cut-off events. [2024-06-28 00:03:31,268 INFO L125 PetriNetUnfolderBase]: For 73408/73408 co-relation queries the response was YES. [2024-06-28 00:03:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 978 events. 551/978 cut-off events. For 73408/73408 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4794 event pairs, 95 based on Foata normal form. 1/977 useless extension candidates. Maximal degree in co-relation 6862. Up to 950 conditions per place. [2024-06-28 00:03:31,283 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 17 changer transitions 0/259 dead transitions. [2024-06-28 00:03:31,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 3241 flow [2024-06-28 00:03:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:03:31,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 00:03:31,286 INFO L175 Difference]: Start difference. First operand has 252 places, 249 transitions, 2661 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:03:31,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 3241 flow [2024-06-28 00:03:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 259 transitions, 3153 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:31,531 INFO L231 Difference]: Finished difference. Result has 256 places, 251 transitions, 2664 flow [2024-06-28 00:03:31,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2664, PETRI_PLACES=256, PETRI_TRANSITIONS=251} [2024-06-28 00:03:31,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 00:03:31,532 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 251 transitions, 2664 flow [2024-06-28 00:03:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:31,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:31,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:31,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:03:31,533 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:31,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347039, now seen corresponding path program 11 times [2024-06-28 00:03:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708323460] [2024-06-28 00:03:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:31,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708323460] [2024-06-28 00:03:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708323460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:33,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:33,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:33,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677184828] [2024-06-28 00:03:33,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:33,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:33,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:33,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:33,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:33,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:33,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 251 transitions, 2664 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:33,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:33,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:33,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:33,781 INFO L124 PetriNetUnfolderBase]: 548/973 cut-off events. [2024-06-28 00:03:33,782 INFO L125 PetriNetUnfolderBase]: For 72403/72403 co-relation queries the response was YES. [2024-06-28 00:03:33,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 973 events. 548/973 cut-off events. For 72403/72403 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4764 event pairs, 96 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 6662. Up to 942 conditions per place. [2024-06-28 00:03:33,796 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 242 selfloop transitions, 16 changer transitions 0/260 dead transitions. [2024-06-28 00:03:33,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 260 transitions, 3200 flow [2024-06-28 00:03:33,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 00:03:33,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 00:03:33,798 INFO L175 Difference]: Start difference. First operand has 256 places, 251 transitions, 2664 flow. Second operand 9 states and 98 transitions. [2024-06-28 00:03:33,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 260 transitions, 3200 flow [2024-06-28 00:03:34,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 260 transitions, 3110 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:34,035 INFO L231 Difference]: Finished difference. Result has 258 places, 251 transitions, 2610 flow [2024-06-28 00:03:34,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2610, PETRI_PLACES=258, PETRI_TRANSITIONS=251} [2024-06-28 00:03:34,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 00:03:34,036 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 251 transitions, 2610 flow [2024-06-28 00:03:34,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:34,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:34,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:34,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:03:34,038 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:34,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347194, now seen corresponding path program 14 times [2024-06-28 00:03:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:34,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796907345] [2024-06-28 00:03:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:34,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:35,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:35,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796907345] [2024-06-28 00:03:35,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796907345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:35,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:35,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545370396] [2024-06-28 00:03:35,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:35,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:35,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:36,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:03:36,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 251 transitions, 2610 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:36,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:36,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:03:36,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:36,515 INFO L124 PetriNetUnfolderBase]: 546/970 cut-off events. [2024-06-28 00:03:36,515 INFO L125 PetriNetUnfolderBase]: For 68241/68241 co-relation queries the response was YES. [2024-06-28 00:03:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 970 events. 546/970 cut-off events. For 68241/68241 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4742 event pairs, 94 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 6523. Up to 915 conditions per place. [2024-06-28 00:03:36,527 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 32 changer transitions 0/259 dead transitions. [2024-06-28 00:03:36,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 259 transitions, 3142 flow [2024-06-28 00:03:36,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 00:03:36,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 00:03:36,531 INFO L175 Difference]: Start difference. First operand has 258 places, 251 transitions, 2610 flow. Second operand 10 states and 108 transitions. [2024-06-28 00:03:36,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 259 transitions, 3142 flow [2024-06-28 00:03:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 259 transitions, 3094 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:36,791 INFO L231 Difference]: Finished difference. Result has 261 places, 251 transitions, 2631 flow [2024-06-28 00:03:36,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2631, PETRI_PLACES=261, PETRI_TRANSITIONS=251} [2024-06-28 00:03:36,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-28 00:03:36,792 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 251 transitions, 2631 flow [2024-06-28 00:03:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:36,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:36,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:36,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:03:36,793 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:36,794 INFO L85 PathProgramCache]: Analyzing trace with hash -164025331, now seen corresponding path program 12 times [2024-06-28 00:03:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184660231] [2024-06-28 00:03:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:36,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184660231] [2024-06-28 00:03:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184660231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:38,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494711236] [2024-06-28 00:03:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:38,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:38,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 251 transitions, 2631 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:38,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:38,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:38,947 INFO L124 PetriNetUnfolderBase]: 550/978 cut-off events. [2024-06-28 00:03:38,947 INFO L125 PetriNetUnfolderBase]: For 72885/72885 co-relation queries the response was YES. [2024-06-28 00:03:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 978 events. 550/978 cut-off events. For 72885/72885 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4812 event pairs, 37 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 6589. Up to 608 conditions per place. [2024-06-28 00:03:38,960 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 189 selfloop transitions, 78 changer transitions 0/269 dead transitions. [2024-06-28 00:03:38,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 269 transitions, 3373 flow [2024-06-28 00:03:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:38,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:38,962 INFO L175 Difference]: Start difference. First operand has 261 places, 251 transitions, 2631 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:38,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 269 transitions, 3373 flow [2024-06-28 00:03:39,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 269 transitions, 3217 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:03:39,243 INFO L231 Difference]: Finished difference. Result has 260 places, 252 transitions, 2647 flow [2024-06-28 00:03:39,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2475, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2647, PETRI_PLACES=260, PETRI_TRANSITIONS=252} [2024-06-28 00:03:39,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 00:03:39,244 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 252 transitions, 2647 flow [2024-06-28 00:03:39,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:39,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:39,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:39,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:03:39,245 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:39,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash -163934966, now seen corresponding path program 15 times [2024-06-28 00:03:39,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:39,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092564919] [2024-06-28 00:03:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:39,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:41,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:41,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092564919] [2024-06-28 00:03:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092564919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:41,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:41,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613881775] [2024-06-28 00:03:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:41,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:41,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:41,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:41,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:41,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 252 transitions, 2647 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:41,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:41,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:41,522 INFO L124 PetriNetUnfolderBase]: 553/983 cut-off events. [2024-06-28 00:03:41,523 INFO L125 PetriNetUnfolderBase]: For 71672/71672 co-relation queries the response was YES. [2024-06-28 00:03:41,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 983 events. 553/983 cut-off events. For 71672/71672 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4834 event pairs, 66 based on Foata normal form. 1/982 useless extension candidates. Maximal degree in co-relation 6677. Up to 688 conditions per place. [2024-06-28 00:03:41,536 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 102 changer transitions 0/270 dead transitions. [2024-06-28 00:03:41,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 270 transitions, 3417 flow [2024-06-28 00:03:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 00:03:41,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-28 00:03:41,538 INFO L175 Difference]: Start difference. First operand has 260 places, 252 transitions, 2647 flow. Second operand 9 states and 122 transitions. [2024-06-28 00:03:41,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 270 transitions, 3417 flow [2024-06-28 00:03:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 270 transitions, 3281 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:41,804 INFO L231 Difference]: Finished difference. Result has 262 places, 256 transitions, 2769 flow [2024-06-28 00:03:41,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2769, PETRI_PLACES=262, PETRI_TRANSITIONS=256} [2024-06-28 00:03:41,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 00:03:41,805 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 256 transitions, 2769 flow [2024-06-28 00:03:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:41,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:41,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:41,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:03:41,805 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:41,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash -163938841, now seen corresponding path program 13 times [2024-06-28 00:03:41,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:41,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459846696] [2024-06-28 00:03:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459846696] [2024-06-28 00:03:43,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459846696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:43,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:43,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264309834] [2024-06-28 00:03:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:43,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:43,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:43,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:43,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:43,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 256 transitions, 2769 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:43,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:43,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:43,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,070 INFO L124 PetriNetUnfolderBase]: 564/1004 cut-off events. [2024-06-28 00:03:44,070 INFO L125 PetriNetUnfolderBase]: For 81013/81013 co-relation queries the response was YES. [2024-06-28 00:03:44,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 1004 events. 564/1004 cut-off events. For 81013/81013 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5005 event pairs, 59 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 6963. Up to 784 conditions per place. [2024-06-28 00:03:44,080 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 203 selfloop transitions, 69 changer transitions 0/274 dead transitions. [2024-06-28 00:03:44,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 274 transitions, 3525 flow [2024-06-28 00:03:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:44,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 00:03:44,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 00:03:44,082 INFO L175 Difference]: Start difference. First operand has 262 places, 256 transitions, 2769 flow. Second operand 9 states and 121 transitions. [2024-06-28 00:03:44,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 274 transitions, 3525 flow [2024-06-28 00:03:44,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 274 transitions, 3411 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:44,356 INFO L231 Difference]: Finished difference. Result has 264 places, 258 transitions, 2817 flow [2024-06-28 00:03:44,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2817, PETRI_PLACES=264, PETRI_TRANSITIONS=258} [2024-06-28 00:03:44,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 00:03:44,357 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 258 transitions, 2817 flow [2024-06-28 00:03:44,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:44,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:03:44,358 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:44,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,358 INFO L85 PathProgramCache]: Analyzing trace with hash -163935121, now seen corresponding path program 14 times [2024-06-28 00:03:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881265097] [2024-06-28 00:03:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:46,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:46,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:46,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881265097] [2024-06-28 00:03:46,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881265097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:46,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:46,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:46,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995842622] [2024-06-28 00:03:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:46,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:46,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:46,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:46,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 258 transitions, 2817 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:46,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:47,075 INFO L124 PetriNetUnfolderBase]: 561/999 cut-off events. [2024-06-28 00:03:47,076 INFO L125 PetriNetUnfolderBase]: For 74987/74987 co-relation queries the response was YES. [2024-06-28 00:03:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 999 events. 561/999 cut-off events. For 74987/74987 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4962 event pairs, 60 based on Foata normal form. 2/999 useless extension candidates. Maximal degree in co-relation 6856. Up to 810 conditions per place. [2024-06-28 00:03:47,089 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 203 selfloop transitions, 67 changer transitions 0/272 dead transitions. [2024-06-28 00:03:47,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 272 transitions, 3395 flow [2024-06-28 00:03:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:47,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:47,091 INFO L175 Difference]: Start difference. First operand has 264 places, 258 transitions, 2817 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:47,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 272 transitions, 3395 flow [2024-06-28 00:03:47,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 272 transitions, 3304 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:47,337 INFO L231 Difference]: Finished difference. Result has 267 places, 258 transitions, 2866 flow [2024-06-28 00:03:47,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2866, PETRI_PLACES=267, PETRI_TRANSITIONS=258} [2024-06-28 00:03:47,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 00:03:47,338 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 258 transitions, 2866 flow [2024-06-28 00:03:47,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:47,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:47,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:47,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:03:47,339 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:47,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1664793388, now seen corresponding path program 16 times [2024-06-28 00:03:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495839986] [2024-06-28 00:03:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:49,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495839986] [2024-06-28 00:03:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495839986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047223666] [2024-06-28 00:03:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:49,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:49,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:49,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:49,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 258 transitions, 2866 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:49,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:49,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:49,764 INFO L124 PetriNetUnfolderBase]: 564/1004 cut-off events. [2024-06-28 00:03:49,765 INFO L125 PetriNetUnfolderBase]: For 71964/71964 co-relation queries the response was YES. [2024-06-28 00:03:49,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7110 conditions, 1004 events. 564/1004 cut-off events. For 71964/71964 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5010 event pairs, 60 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 6988. Up to 842 conditions per place. [2024-06-28 00:03:49,779 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 64 changer transitions 0/270 dead transitions. [2024-06-28 00:03:49,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 270 transitions, 3448 flow [2024-06-28 00:03:49,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:49,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:49,781 INFO L175 Difference]: Start difference. First operand has 267 places, 258 transitions, 2866 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:49,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 270 transitions, 3448 flow [2024-06-28 00:03:50,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 270 transitions, 3306 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:03:50,047 INFO L231 Difference]: Finished difference. Result has 267 places, 260 transitions, 2886 flow [2024-06-28 00:03:50,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=267, PETRI_TRANSITIONS=260} [2024-06-28 00:03:50,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 00:03:50,048 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 260 transitions, 2886 flow [2024-06-28 00:03:50,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:50,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:50,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:50,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:03:50,049 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:50,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -77099006, now seen corresponding path program 17 times [2024-06-28 00:03:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:50,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969096604] [2024-06-28 00:03:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:50,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:51,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969096604] [2024-06-28 00:03:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969096604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:51,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:51,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:51,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651839445] [2024-06-28 00:03:51,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:51,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:51,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:51,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 260 transitions, 2886 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:51,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:51,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:51,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:52,231 INFO L124 PetriNetUnfolderBase]: 567/1009 cut-off events. [2024-06-28 00:03:52,232 INFO L125 PetriNetUnfolderBase]: For 72036/72036 co-relation queries the response was YES. [2024-06-28 00:03:52,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7140 conditions, 1009 events. 567/1009 cut-off events. For 72036/72036 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5027 event pairs, 60 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 7018. Up to 835 conditions per place. [2024-06-28 00:03:52,246 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 70 changer transitions 0/272 dead transitions. [2024-06-28 00:03:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 272 transitions, 3476 flow [2024-06-28 00:03:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:03:52,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:03:52,247 INFO L175 Difference]: Start difference. First operand has 267 places, 260 transitions, 2886 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:03:52,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 272 transitions, 3476 flow [2024-06-28 00:03:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 272 transitions, 3339 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:52,531 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 2927 flow [2024-06-28 00:03:52,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2927, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2024-06-28 00:03:52,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 00:03:52,532 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 2927 flow [2024-06-28 00:03:52,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:52,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:52,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:52,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:03:52,533 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:52,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash -77099161, now seen corresponding path program 15 times [2024-06-28 00:03:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:52,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086198596] [2024-06-28 00:03:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:54,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:54,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:54,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086198596] [2024-06-28 00:03:54,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086198596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:54,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:54,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485959070] [2024-06-28 00:03:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:54,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:54,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:54,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:54,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:54,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:54,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 2927 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:54,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:54,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:54,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:54,814 INFO L124 PetriNetUnfolderBase]: 571/1017 cut-off events. [2024-06-28 00:03:54,815 INFO L125 PetriNetUnfolderBase]: For 75060/75060 co-relation queries the response was YES. [2024-06-28 00:03:54,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 1017 events. 571/1017 cut-off events. For 75060/75060 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5071 event pairs, 60 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 7058. Up to 896 conditions per place. [2024-06-28 00:03:54,829 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 226 selfloop transitions, 46 changer transitions 0/274 dead transitions. [2024-06-28 00:03:54,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 274 transitions, 3506 flow [2024-06-28 00:03:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-28 00:03:54,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-28 00:03:54,830 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 2927 flow. Second operand 9 states and 115 transitions. [2024-06-28 00:03:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 274 transitions, 3506 flow [2024-06-28 00:03:55,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 274 transitions, 3353 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:55,088 INFO L231 Difference]: Finished difference. Result has 269 places, 263 transitions, 2883 flow [2024-06-28 00:03:55,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2883, PETRI_PLACES=269, PETRI_TRANSITIONS=263} [2024-06-28 00:03:55,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 00:03:55,089 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 263 transitions, 2883 flow [2024-06-28 00:03:55,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:55,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:03:55,089 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:55,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash -77247031, now seen corresponding path program 16 times [2024-06-28 00:03:55,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176617121] [2024-06-28 00:03:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:56,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176617121] [2024-06-28 00:03:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176617121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:56,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:56,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820024023] [2024-06-28 00:03:56,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:56,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:56,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 263 transitions, 2883 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:56,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:56,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:56,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,050 INFO L124 PetriNetUnfolderBase]: 582/1038 cut-off events. [2024-06-28 00:03:57,051 INFO L125 PetriNetUnfolderBase]: For 81044/81044 co-relation queries the response was YES. [2024-06-28 00:03:57,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7372 conditions, 1038 events. 582/1038 cut-off events. For 81044/81044 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5221 event pairs, 57 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7250. Up to 862 conditions per place. [2024-06-28 00:03:57,062 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 56 changer transitions 0/278 dead transitions. [2024-06-28 00:03:57,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 278 transitions, 3643 flow [2024-06-28 00:03:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:03:57,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:03:57,064 INFO L175 Difference]: Start difference. First operand has 269 places, 263 transitions, 2883 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:03:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 278 transitions, 3643 flow [2024-06-28 00:03:57,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 278 transitions, 3545 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:03:57,312 INFO L231 Difference]: Finished difference. Result has 270 places, 265 transitions, 2929 flow [2024-06-28 00:03:57,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2929, PETRI_PLACES=270, PETRI_TRANSITIONS=265} [2024-06-28 00:03:57,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-28 00:03:57,313 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 265 transitions, 2929 flow [2024-06-28 00:03:57,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:57,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:03:57,314 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:57,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -77243311, now seen corresponding path program 17 times [2024-06-28 00:03:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267230540] [2024-06-28 00:03:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267230540] [2024-06-28 00:03:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267230540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:58,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916771919] [2024-06-28 00:03:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:59,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:03:59,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 265 transitions, 2929 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:59,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:59,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:03:59,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,390 INFO L124 PetriNetUnfolderBase]: 579/1033 cut-off events. [2024-06-28 00:03:59,390 INFO L125 PetriNetUnfolderBase]: For 75180/75180 co-relation queries the response was YES. [2024-06-28 00:03:59,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7232 conditions, 1033 events. 579/1033 cut-off events. For 75180/75180 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5213 event pairs, 60 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 7110. Up to 900 conditions per place. [2024-06-28 00:03:59,402 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 52 changer transitions 0/276 dead transitions. [2024-06-28 00:03:59,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 276 transitions, 3503 flow [2024-06-28 00:03:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:03:59,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-28 00:03:59,404 INFO L175 Difference]: Start difference. First operand has 270 places, 265 transitions, 2929 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:03:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 276 transitions, 3503 flow [2024-06-28 00:03:59,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 276 transitions, 3423 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 00:03:59,626 INFO L231 Difference]: Finished difference. Result has 273 places, 265 transitions, 2959 flow [2024-06-28 00:03:59,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2959, PETRI_PLACES=273, PETRI_TRANSITIONS=265} [2024-06-28 00:03:59,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 00:03:59,627 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 265 transitions, 2959 flow [2024-06-28 00:03:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:59,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:03:59,627 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:03:59,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash -77243156, now seen corresponding path program 18 times [2024-06-28 00:03:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791065235] [2024-06-28 00:03:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:01,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791065235] [2024-06-28 00:04:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791065235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:01,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175578651] [2024-06-28 00:04:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:01,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:01,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:01,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 265 transitions, 2959 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:01,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:01,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:01,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:01,599 INFO L124 PetriNetUnfolderBase]: 582/1038 cut-off events. [2024-06-28 00:04:01,599 INFO L125 PetriNetUnfolderBase]: For 72121/72121 co-relation queries the response was YES. [2024-06-28 00:04:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7334 conditions, 1038 events. 582/1038 cut-off events. For 72121/72121 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5207 event pairs, 64 based on Foata normal form. 1/1037 useless extension candidates. Maximal degree in co-relation 7211. Up to 846 conditions per place. [2024-06-28 00:04:01,610 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 78 changer transitions 0/277 dead transitions. [2024-06-28 00:04:01,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 277 transitions, 3563 flow [2024-06-28 00:04:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:04:01,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-28 00:04:01,611 INFO L175 Difference]: Start difference. First operand has 273 places, 265 transitions, 2959 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:04:01,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 277 transitions, 3563 flow [2024-06-28 00:04:01,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 277 transitions, 3445 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:01,828 INFO L231 Difference]: Finished difference. Result has 273 places, 267 transitions, 3039 flow [2024-06-28 00:04:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3039, PETRI_PLACES=273, PETRI_TRANSITIONS=267} [2024-06-28 00:04:01,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 00:04:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 267 transitions, 3039 flow [2024-06-28 00:04:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:01,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:01,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:04:01,831 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1219485023, now seen corresponding path program 18 times [2024-06-28 00:04:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91917142] [2024-06-28 00:04:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:03,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91917142] [2024-06-28 00:04:03,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91917142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:03,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208612580] [2024-06-28 00:04:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:03,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:03,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:03,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 267 transitions, 3039 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:03,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:03,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:04,159 INFO L124 PetriNetUnfolderBase]: 586/1047 cut-off events. [2024-06-28 00:04:04,160 INFO L125 PetriNetUnfolderBase]: For 75298/75298 co-relation queries the response was YES. [2024-06-28 00:04:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7419 conditions, 1047 events. 586/1047 cut-off events. For 75298/75298 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5302 event pairs, 33 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 7296. Up to 806 conditions per place. [2024-06-28 00:04:04,174 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 214 selfloop transitions, 71 changer transitions 0/287 dead transitions. [2024-06-28 00:04:04,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 287 transitions, 3837 flow [2024-06-28 00:04:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:04:04,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44802867383512546 [2024-06-28 00:04:04,176 INFO L175 Difference]: Start difference. First operand has 273 places, 267 transitions, 3039 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:04:04,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 287 transitions, 3837 flow [2024-06-28 00:04:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 287 transitions, 3662 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:04,425 INFO L231 Difference]: Finished difference. Result has 274 places, 268 transitions, 3027 flow [2024-06-28 00:04:04,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3027, PETRI_PLACES=274, PETRI_TRANSITIONS=268} [2024-06-28 00:04:04,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:04:04,426 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 268 transitions, 3027 flow [2024-06-28 00:04:04,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:04,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:04,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:04,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:04:04,426 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:04,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:04,427 INFO L85 PathProgramCache]: Analyzing trace with hash 471436733, now seen corresponding path program 19 times [2024-06-28 00:04:04,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:04,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371296350] [2024-06-28 00:04:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:04,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371296350] [2024-06-28 00:04:05,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371296350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:05,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847093434] [2024-06-28 00:04:05,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:06,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:06,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 268 transitions, 3027 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:06,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:06,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:06,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:06,484 INFO L124 PetriNetUnfolderBase]: 590/1055 cut-off events. [2024-06-28 00:04:06,484 INFO L125 PetriNetUnfolderBase]: For 75398/75398 co-relation queries the response was YES. [2024-06-28 00:04:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7467 conditions, 1055 events. 590/1055 cut-off events. For 75398/75398 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5401 event pairs, 58 based on Foata normal form. 2/1055 useless extension candidates. Maximal degree in co-relation 7344. Up to 895 conditions per place. [2024-06-28 00:04:06,497 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 220 selfloop transitions, 64 changer transitions 0/286 dead transitions. [2024-06-28 00:04:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 286 transitions, 3665 flow [2024-06-28 00:04:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-28 00:04:06,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-28 00:04:06,498 INFO L175 Difference]: Start difference. First operand has 274 places, 268 transitions, 3027 flow. Second operand 9 states and 123 transitions. [2024-06-28 00:04:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 286 transitions, 3665 flow [2024-06-28 00:04:06,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 286 transitions, 3412 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:06,737 INFO L231 Difference]: Finished difference. Result has 273 places, 269 transitions, 2925 flow [2024-06-28 00:04:06,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2925, PETRI_PLACES=273, PETRI_TRANSITIONS=269} [2024-06-28 00:04:06,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 00:04:06,738 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 269 transitions, 2925 flow [2024-06-28 00:04:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:06,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:06,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:04:06,739 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:06,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 471436888, now seen corresponding path program 19 times [2024-06-28 00:04:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:06,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301386623] [2024-06-28 00:04:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:08,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301386623] [2024-06-28 00:04:08,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301386623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:08,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:08,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498556639] [2024-06-28 00:04:08,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:08,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:08,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:08,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:08,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 269 transitions, 2925 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:08,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:08,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:08,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:08,701 INFO L124 PetriNetUnfolderBase]: 593/1060 cut-off events. [2024-06-28 00:04:08,702 INFO L125 PetriNetUnfolderBase]: For 72155/72155 co-relation queries the response was YES. [2024-06-28 00:04:08,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7244 conditions, 1060 events. 593/1060 cut-off events. For 72155/72155 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5414 event pairs, 61 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 7123. Up to 814 conditions per place. [2024-06-28 00:04:08,714 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 102 changer transitions 0/288 dead transitions. [2024-06-28 00:04:08,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 288 transitions, 3742 flow [2024-06-28 00:04:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:04:08,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45878136200716846 [2024-06-28 00:04:08,716 INFO L175 Difference]: Start difference. First operand has 273 places, 269 transitions, 2925 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:04:08,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 288 transitions, 3742 flow [2024-06-28 00:04:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 288 transitions, 3608 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:08,950 INFO L231 Difference]: Finished difference. Result has 274 places, 271 transitions, 3039 flow [2024-06-28 00:04:08,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3039, PETRI_PLACES=274, PETRI_TRANSITIONS=271} [2024-06-28 00:04:08,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 00:04:08,951 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 271 transitions, 3039 flow [2024-06-28 00:04:08,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:08,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:08,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:08,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:04:08,951 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:08,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:08,952 INFO L85 PathProgramCache]: Analyzing trace with hash 477150808, now seen corresponding path program 20 times [2024-06-28 00:04:08,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:08,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207562976] [2024-06-28 00:04:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:10,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207562976] [2024-06-28 00:04:10,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207562976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:10,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800632966] [2024-06-28 00:04:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:10,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:10,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 271 transitions, 3039 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:10,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:10,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:10,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,098 INFO L124 PetriNetUnfolderBase]: 596/1064 cut-off events. [2024-06-28 00:04:11,099 INFO L125 PetriNetUnfolderBase]: For 72380/72380 co-relation queries the response was YES. [2024-06-28 00:04:11,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7363 conditions, 1064 events. 596/1064 cut-off events. For 72380/72380 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5417 event pairs, 61 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 7242. Up to 902 conditions per place. [2024-06-28 00:04:11,112 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 65 changer transitions 0/284 dead transitions. [2024-06-28 00:04:11,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 284 transitions, 3675 flow [2024-06-28 00:04:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 00:04:11,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:11,113 INFO L175 Difference]: Start difference. First operand has 274 places, 271 transitions, 3039 flow. Second operand 9 states and 117 transitions. [2024-06-28 00:04:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 284 transitions, 3675 flow [2024-06-28 00:04:11,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 3416 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:11,308 INFO L231 Difference]: Finished difference. Result has 275 places, 274 transitions, 2970 flow [2024-06-28 00:04:11,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2970, PETRI_PLACES=275, PETRI_TRANSITIONS=274} [2024-06-28 00:04:11,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 00:04:11,309 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 274 transitions, 2970 flow [2024-06-28 00:04:11,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:11,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:11,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:04:11,310 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:11,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,310 INFO L85 PathProgramCache]: Analyzing trace with hash 476943263, now seen corresponding path program 20 times [2024-06-28 00:04:11,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110935509] [2024-06-28 00:04:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:12,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110935509] [2024-06-28 00:04:12,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110935509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:12,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932776766] [2024-06-28 00:04:12,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:12,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:13,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:13,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 274 transitions, 2970 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:13,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:13,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:13,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,484 INFO L124 PetriNetUnfolderBase]: 600/1072 cut-off events. [2024-06-28 00:04:13,484 INFO L125 PetriNetUnfolderBase]: For 75245/75245 co-relation queries the response was YES. [2024-06-28 00:04:13,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7291 conditions, 1072 events. 600/1072 cut-off events. For 75245/75245 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5485 event pairs, 60 based on Foata normal form. 2/1072 useless extension candidates. Maximal degree in co-relation 7170. Up to 951 conditions per place. [2024-06-28 00:04:13,498 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 241 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2024-06-28 00:04:13,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 286 transitions, 3575 flow [2024-06-28 00:04:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 00:04:13,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 00:04:13,506 INFO L175 Difference]: Start difference. First operand has 275 places, 274 transitions, 2970 flow. Second operand 9 states and 114 transitions. [2024-06-28 00:04:13,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 286 transitions, 3575 flow [2024-06-28 00:04:13,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 286 transitions, 3461 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:13,737 INFO L231 Difference]: Finished difference. Result has 279 places, 275 transitions, 2961 flow [2024-06-28 00:04:13,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2856, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2961, PETRI_PLACES=279, PETRI_TRANSITIONS=275} [2024-06-28 00:04:13,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 00:04:13,738 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 275 transitions, 2961 flow [2024-06-28 00:04:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:13,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:13,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:04:13,738 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 471581038, now seen corresponding path program 21 times [2024-06-28 00:04:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686651305] [2024-06-28 00:04:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:15,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686651305] [2024-06-28 00:04:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686651305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:15,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:15,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:15,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56627107] [2024-06-28 00:04:15,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:15,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:15,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:15,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 275 transitions, 2961 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:15,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:15,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:16,254 INFO L124 PetriNetUnfolderBase]: 608/1088 cut-off events. [2024-06-28 00:04:16,254 INFO L125 PetriNetUnfolderBase]: For 77221/77221 co-relation queries the response was YES. [2024-06-28 00:04:16,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7485 conditions, 1088 events. 608/1088 cut-off events. For 77221/77221 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5582 event pairs, 80 based on Foata normal form. 1/1087 useless extension candidates. Maximal degree in co-relation 7363. Up to 910 conditions per place. [2024-06-28 00:04:16,266 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 78 changer transitions 0/293 dead transitions. [2024-06-28 00:04:16,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 293 transitions, 3820 flow [2024-06-28 00:04:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-28 00:04:16,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:04:16,268 INFO L175 Difference]: Start difference. First operand has 279 places, 275 transitions, 2961 flow. Second operand 9 states and 124 transitions. [2024-06-28 00:04:16,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 293 transitions, 3820 flow [2024-06-28 00:04:16,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 293 transitions, 3726 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:16,534 INFO L231 Difference]: Finished difference. Result has 280 places, 279 transitions, 3113 flow [2024-06-28 00:04:16,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3113, PETRI_PLACES=280, PETRI_TRANSITIONS=279} [2024-06-28 00:04:16,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 00:04:16,534 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 279 transitions, 3113 flow [2024-06-28 00:04:16,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:16,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:16,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:16,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:04:16,535 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:16,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash 471580883, now seen corresponding path program 21 times [2024-06-28 00:04:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:16,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003686570] [2024-06-28 00:04:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003686570] [2024-06-28 00:04:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003686570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218187418] [2024-06-28 00:04:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:18,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:18,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 279 transitions, 3113 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:18,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:18,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:18,848 INFO L124 PetriNetUnfolderBase]: 605/1083 cut-off events. [2024-06-28 00:04:18,849 INFO L125 PetriNetUnfolderBase]: For 74219/74219 co-relation queries the response was YES. [2024-06-28 00:04:18,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 1083 events. 605/1083 cut-off events. For 74219/74219 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5591 event pairs, 78 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 7253. Up to 959 conditions per place. [2024-06-28 00:04:18,863 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 241 selfloop transitions, 50 changer transitions 0/293 dead transitions. [2024-06-28 00:04:18,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 293 transitions, 3738 flow [2024-06-28 00:04:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:04:18,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:04:18,864 INFO L175 Difference]: Start difference. First operand has 280 places, 279 transitions, 3113 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:04:18,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 293 transitions, 3738 flow [2024-06-28 00:04:19,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 293 transitions, 3611 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:19,133 INFO L231 Difference]: Finished difference. Result has 283 places, 279 transitions, 3092 flow [2024-06-28 00:04:19,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3092, PETRI_PLACES=283, PETRI_TRANSITIONS=279} [2024-06-28 00:04:19,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 00:04:19,134 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 279 transitions, 3092 flow [2024-06-28 00:04:19,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:19,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:19,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:04:19,135 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:19,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash 471586835, now seen corresponding path program 2 times [2024-06-28 00:04:19,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729124605] [2024-06-28 00:04:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729124605] [2024-06-28 00:04:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729124605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:21,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:21,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595188] [2024-06-28 00:04:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:21,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:21,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 279 transitions, 3092 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:21,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:21,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:21,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:21,939 INFO L124 PetriNetUnfolderBase]: 611/1090 cut-off events. [2024-06-28 00:04:21,939 INFO L125 PetriNetUnfolderBase]: For 70740/70740 co-relation queries the response was YES. [2024-06-28 00:04:21,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 1090 events. 611/1090 cut-off events. For 70740/70740 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5591 event pairs, 66 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7315. Up to 802 conditions per place. [2024-06-28 00:04:21,954 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 213 selfloop transitions, 82 changer transitions 0/297 dead transitions. [2024-06-28 00:04:21,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 297 transitions, 3897 flow [2024-06-28 00:04:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:04:21,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 00:04:21,956 INFO L175 Difference]: Start difference. First operand has 283 places, 279 transitions, 3092 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:04:21,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 297 transitions, 3897 flow [2024-06-28 00:04:22,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 297 transitions, 3707 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:04:22,256 INFO L231 Difference]: Finished difference. Result has 283 places, 282 transitions, 3092 flow [2024-06-28 00:04:22,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3092, PETRI_PLACES=283, PETRI_TRANSITIONS=282} [2024-06-28 00:04:22,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 00:04:22,257 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 282 transitions, 3092 flow [2024-06-28 00:04:22,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:22,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:22,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:22,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:04:22,258 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:22,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 471586618, now seen corresponding path program 22 times [2024-06-28 00:04:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763408517] [2024-06-28 00:04:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:22,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:24,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:24,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763408517] [2024-06-28 00:04:24,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763408517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:24,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:24,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:24,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414351811] [2024-06-28 00:04:24,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:24,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:24,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:24,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:24,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:24,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 282 transitions, 3092 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:24,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:24,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:24,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:24,674 INFO L124 PetriNetUnfolderBase]: 609/1090 cut-off events. [2024-06-28 00:04:24,675 INFO L125 PetriNetUnfolderBase]: For 67851/67851 co-relation queries the response was YES. [2024-06-28 00:04:24,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7312 conditions, 1090 events. 609/1090 cut-off events. For 67851/67851 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5614 event pairs, 79 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 7189. Up to 925 conditions per place. [2024-06-28 00:04:24,689 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 72 changer transitions 0/295 dead transitions. [2024-06-28 00:04:24,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 295 transitions, 3721 flow [2024-06-28 00:04:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-28 00:04:24,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2024-06-28 00:04:24,691 INFO L175 Difference]: Start difference. First operand has 283 places, 282 transitions, 3092 flow. Second operand 9 states and 121 transitions. [2024-06-28 00:04:24,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 295 transitions, 3721 flow [2024-06-28 00:04:24,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 295 transitions, 3551 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:24,945 INFO L231 Difference]: Finished difference. Result has 285 places, 282 transitions, 3076 flow [2024-06-28 00:04:24,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3076, PETRI_PLACES=285, PETRI_TRANSITIONS=282} [2024-06-28 00:04:24,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 00:04:24,946 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 282 transitions, 3076 flow [2024-06-28 00:04:24,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:24,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:24,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:24,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:04:24,947 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:24,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 477151025, now seen corresponding path program 3 times [2024-06-28 00:04:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:24,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821073053] [2024-06-28 00:04:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:26,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821073053] [2024-06-28 00:04:26,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821073053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:26,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694885200] [2024-06-28 00:04:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:26,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:26,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 282 transitions, 3076 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:26,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:26,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:26,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,554 INFO L124 PetriNetUnfolderBase]: 626/1115 cut-off events. [2024-06-28 00:04:27,555 INFO L125 PetriNetUnfolderBase]: For 72403/72403 co-relation queries the response was YES. [2024-06-28 00:04:27,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1115 events. 626/1115 cut-off events. For 72403/72403 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5723 event pairs, 61 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 7362. Up to 816 conditions per place. [2024-06-28 00:04:27,571 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 88 changer transitions 0/306 dead transitions. [2024-06-28 00:04:27,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 306 transitions, 4102 flow [2024-06-28 00:04:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:04:27,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:04:27,572 INFO L175 Difference]: Start difference. First operand has 285 places, 282 transitions, 3076 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:04:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 306 transitions, 4102 flow [2024-06-28 00:04:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 306 transitions, 3956 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:27,844 INFO L231 Difference]: Finished difference. Result has 288 places, 289 transitions, 3161 flow [2024-06-28 00:04:27,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3161, PETRI_PLACES=288, PETRI_TRANSITIONS=289} [2024-06-28 00:04:27,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 00:04:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 289 transitions, 3161 flow [2024-06-28 00:04:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:27,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:27,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:04:27,846 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash 477158465, now seen corresponding path program 4 times [2024-06-28 00:04:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343146304] [2024-06-28 00:04:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:29,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343146304] [2024-06-28 00:04:29,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343146304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756095276] [2024-06-28 00:04:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:29,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:29,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:29,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 289 transitions, 3161 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:29,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:30,261 INFO L124 PetriNetUnfolderBase]: 621/1108 cut-off events. [2024-06-28 00:04:30,261 INFO L125 PetriNetUnfolderBase]: For 71106/71106 co-relation queries the response was YES. [2024-06-28 00:04:30,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 1108 events. 621/1108 cut-off events. For 71106/71106 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5705 event pairs, 61 based on Foata normal form. 2/1108 useless extension candidates. Maximal degree in co-relation 7312. Up to 811 conditions per place. [2024-06-28 00:04:30,274 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 89 changer transitions 0/302 dead transitions. [2024-06-28 00:04:30,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 302 transitions, 3949 flow [2024-06-28 00:04:30,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:30,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:04:30,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:04:30,276 INFO L175 Difference]: Start difference. First operand has 288 places, 289 transitions, 3161 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:04:30,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 302 transitions, 3949 flow [2024-06-28 00:04:30,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 302 transitions, 3804 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:30,507 INFO L231 Difference]: Finished difference. Result has 292 places, 288 transitions, 3192 flow [2024-06-28 00:04:30,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3192, PETRI_PLACES=292, PETRI_TRANSITIONS=288} [2024-06-28 00:04:30,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 00:04:30,508 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 288 transitions, 3192 flow [2024-06-28 00:04:30,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:30,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:30,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:04:30,509 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:30,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash 476948998, now seen corresponding path program 23 times [2024-06-28 00:04:30,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:30,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147089922] [2024-06-28 00:04:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147089922] [2024-06-28 00:04:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147089922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:32,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:32,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284596917] [2024-06-28 00:04:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:32,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:32,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 288 transitions, 3192 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:32,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:32,574 INFO L124 PetriNetUnfolderBase]: 624/1112 cut-off events. [2024-06-28 00:04:32,574 INFO L125 PetriNetUnfolderBase]: For 73023/73023 co-relation queries the response was YES. [2024-06-28 00:04:32,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 1112 events. 624/1112 cut-off events. For 73023/73023 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5734 event pairs, 60 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 7406. Up to 950 conditions per place. [2024-06-28 00:04:32,587 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 235 selfloop transitions, 63 changer transitions 0/300 dead transitions. [2024-06-28 00:04:32,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 300 transitions, 3854 flow [2024-06-28 00:04:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:04:32,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-28 00:04:32,589 INFO L175 Difference]: Start difference. First operand has 292 places, 288 transitions, 3192 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:04:32,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 300 transitions, 3854 flow [2024-06-28 00:04:32,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 300 transitions, 3688 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:32,826 INFO L231 Difference]: Finished difference. Result has 293 places, 290 transitions, 3206 flow [2024-06-28 00:04:32,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2024-06-28 00:04:32,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-28 00:04:32,827 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 3206 flow [2024-06-28 00:04:32,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:32,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:32,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:32,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:04:32,827 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:32,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:32,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1072779414, now seen corresponding path program 24 times [2024-06-28 00:04:32,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:32,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276986862] [2024-06-28 00:04:32,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:32,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:34,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276986862] [2024-06-28 00:04:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276986862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:34,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:34,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018974320] [2024-06-28 00:04:34,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:34,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:34,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:04:34,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 3206 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:34,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:34,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:04:34,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:34,776 INFO L124 PetriNetUnfolderBase]: 622/1109 cut-off events. [2024-06-28 00:04:34,776 INFO L125 PetriNetUnfolderBase]: For 71214/71214 co-relation queries the response was YES. [2024-06-28 00:04:34,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7402 conditions, 1109 events. 622/1109 cut-off events. For 71214/71214 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5704 event pairs, 60 based on Foata normal form. 1/1108 useless extension candidates. Maximal degree in co-relation 7275. Up to 929 conditions per place. [2024-06-28 00:04:34,788 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 225 selfloop transitions, 73 changer transitions 0/300 dead transitions. [2024-06-28 00:04:34,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 300 transitions, 3826 flow [2024-06-28 00:04:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-28 00:04:34,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-28 00:04:34,790 INFO L175 Difference]: Start difference. First operand has 293 places, 290 transitions, 3206 flow. Second operand 9 states and 119 transitions. [2024-06-28 00:04:34,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 300 transitions, 3826 flow [2024-06-28 00:04:35,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 300 transitions, 3672 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:35,034 INFO L231 Difference]: Finished difference. Result has 296 places, 290 transitions, 3206 flow [2024-06-28 00:04:35,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3052, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2024-06-28 00:04:35,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 00:04:35,034 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 3206 flow [2024-06-28 00:04:35,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:35,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:35,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:35,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:04:35,035 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:35,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 476949215, now seen corresponding path program 5 times [2024-06-28 00:04:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463695972] [2024-06-28 00:04:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:35,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:36,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:36,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463695972] [2024-06-28 00:04:36,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463695972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:04:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965491879] [2024-06-28 00:04:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:04:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:04:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:04:36,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:36,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 3206 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:36,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:36,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:36,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:37,436 INFO L124 PetriNetUnfolderBase]: 617/1102 cut-off events. [2024-06-28 00:04:37,437 INFO L125 PetriNetUnfolderBase]: For 69172/69172 co-relation queries the response was YES. [2024-06-28 00:04:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1102 events. 617/1102 cut-off events. For 69172/69172 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5690 event pairs, 63 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 7176. Up to 808 conditions per place. [2024-06-28 00:04:37,448 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 85 changer transitions 0/302 dead transitions. [2024-06-28 00:04:37,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 302 transitions, 3824 flow [2024-06-28 00:04:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:04:37,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:04:37,449 INFO L175 Difference]: Start difference. First operand has 296 places, 290 transitions, 3206 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:04:37,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 302 transitions, 3824 flow [2024-06-28 00:04:37,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 302 transitions, 3511 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:37,665 INFO L231 Difference]: Finished difference. Result has 295 places, 288 transitions, 3047 flow [2024-06-28 00:04:37,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3047, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2024-06-28 00:04:37,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 00:04:37,666 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 3047 flow [2024-06-28 00:04:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:37,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:37,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:04:37,666 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:37,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1662036736, now seen corresponding path program 1 times [2024-06-28 00:04:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:37,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653393202] [2024-06-28 00:04:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:37,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653393202] [2024-06-28 00:04:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653393202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:39,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:39,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363237881] [2024-06-28 00:04:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:39,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:39,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:39,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:39,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 3047 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:39,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:39,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:39,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:40,490 INFO L124 PetriNetUnfolderBase]: 667/1198 cut-off events. [2024-06-28 00:04:40,490 INFO L125 PetriNetUnfolderBase]: For 120903/120903 co-relation queries the response was YES. [2024-06-28 00:04:40,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1198 events. 667/1198 cut-off events. For 120903/120903 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6211 event pairs, 142 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8511. Up to 740 conditions per place. [2024-06-28 00:04:40,507 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 235 selfloop transitions, 80 changer transitions 0/317 dead transitions. [2024-06-28 00:04:40,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 317 transitions, 4169 flow [2024-06-28 00:04:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 00:04:40,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 00:04:40,509 INFO L175 Difference]: Start difference. First operand has 295 places, 288 transitions, 3047 flow. Second operand 10 states and 132 transitions. [2024-06-28 00:04:40,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 317 transitions, 4169 flow [2024-06-28 00:04:40,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 317 transitions, 3946 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 00:04:40,885 INFO L231 Difference]: Finished difference. Result has 296 places, 293 transitions, 3135 flow [2024-06-28 00:04:40,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3135, PETRI_PLACES=296, PETRI_TRANSITIONS=293} [2024-06-28 00:04:40,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 00:04:40,886 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 293 transitions, 3135 flow [2024-06-28 00:04:40,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:40,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:40,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:04:40,887 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:40,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:40,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1720249156, now seen corresponding path program 2 times [2024-06-28 00:04:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:40,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063943309] [2024-06-28 00:04:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:40,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:42,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063943309] [2024-06-28 00:04:42,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063943309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:42,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:42,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:42,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190227377] [2024-06-28 00:04:42,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:42,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:42,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:42,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:42,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:42,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 293 transitions, 3135 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:42,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:42,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:42,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:43,332 INFO L124 PetriNetUnfolderBase]: 671/1206 cut-off events. [2024-06-28 00:04:43,332 INFO L125 PetriNetUnfolderBase]: For 124055/124055 co-relation queries the response was YES. [2024-06-28 00:04:43,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8888 conditions, 1206 events. 671/1206 cut-off events. For 124055/124055 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6278 event pairs, 162 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 8759. Up to 1021 conditions per place. [2024-06-28 00:04:43,349 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 74 changer transitions 0/306 dead transitions. [2024-06-28 00:04:43,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 306 transitions, 3783 flow [2024-06-28 00:04:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:43,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:04:43,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:04:43,351 INFO L175 Difference]: Start difference. First operand has 296 places, 293 transitions, 3135 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:04:43,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 306 transitions, 3783 flow [2024-06-28 00:04:43,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 306 transitions, 3753 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:43,772 INFO L231 Difference]: Finished difference. Result has 302 places, 294 transitions, 3269 flow [2024-06-28 00:04:43,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3269, PETRI_PLACES=302, PETRI_TRANSITIONS=294} [2024-06-28 00:04:43,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 00:04:43,772 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 294 transitions, 3269 flow [2024-06-28 00:04:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:43,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:43,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:43,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:04:43,773 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:43,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1720249342, now seen corresponding path program 1 times [2024-06-28 00:04:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:43,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086539973] [2024-06-28 00:04:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:45,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086539973] [2024-06-28 00:04:45,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086539973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:45,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:45,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:45,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567737440] [2024-06-28 00:04:45,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:45,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:45,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:45,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:45,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:45,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 294 transitions, 3269 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:45,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:45,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:45,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:46,528 INFO L124 PetriNetUnfolderBase]: 687/1232 cut-off events. [2024-06-28 00:04:46,528 INFO L125 PetriNetUnfolderBase]: For 134430/134430 co-relation queries the response was YES. [2024-06-28 00:04:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 1232 events. 687/1232 cut-off events. For 134430/134430 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6416 event pairs, 158 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 9272. Up to 853 conditions per place. [2024-06-28 00:04:46,547 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 95 changer transitions 0/312 dead transitions. [2024-06-28 00:04:46,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 4179 flow [2024-06-28 00:04:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 00:04:46,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:46,549 INFO L175 Difference]: Start difference. First operand has 302 places, 294 transitions, 3269 flow. Second operand 11 states and 132 transitions. [2024-06-28 00:04:46,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 4179 flow [2024-06-28 00:04:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 312 transitions, 4029 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:47,105 INFO L231 Difference]: Finished difference. Result has 305 places, 298 transitions, 3394 flow [2024-06-28 00:04:47,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=305, PETRI_TRANSITIONS=298} [2024-06-28 00:04:47,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 00:04:47,106 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 298 transitions, 3394 flow [2024-06-28 00:04:47,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:47,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:47,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:47,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:04:47,107 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:47,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1720244506, now seen corresponding path program 3 times [2024-06-28 00:04:47,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:47,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296017245] [2024-06-28 00:04:47,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:47,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296017245] [2024-06-28 00:04:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296017245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:04:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661956192] [2024-06-28 00:04:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:04:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:04:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:04:49,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:49,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 298 transitions, 3394 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:49,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:49,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:49,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:49,744 INFO L124 PetriNetUnfolderBase]: 691/1240 cut-off events. [2024-06-28 00:04:49,744 INFO L125 PetriNetUnfolderBase]: For 137778/137778 co-relation queries the response was YES. [2024-06-28 00:04:49,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9561 conditions, 1240 events. 691/1240 cut-off events. For 137778/137778 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6478 event pairs, 165 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 9429. Up to 1041 conditions per place. [2024-06-28 00:04:49,759 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 75 changer transitions 0/312 dead transitions. [2024-06-28 00:04:49,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 312 transitions, 4056 flow [2024-06-28 00:04:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:04:49,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:04:49,761 INFO L175 Difference]: Start difference. First operand has 305 places, 298 transitions, 3394 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:04:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 312 transitions, 4056 flow [2024-06-28 00:04:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 312 transitions, 3944 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:04:50,214 INFO L231 Difference]: Finished difference. Result has 308 places, 299 transitions, 3448 flow [2024-06-28 00:04:50,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3448, PETRI_PLACES=308, PETRI_TRANSITIONS=299} [2024-06-28 00:04:50,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 00:04:50,215 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 299 transitions, 3448 flow [2024-06-28 00:04:50,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:50,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:50,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:04:50,216 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:50,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2024074372, now seen corresponding path program 4 times [2024-06-28 00:04:50,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367455844] [2024-06-28 00:04:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367455844] [2024-06-28 00:04:51,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367455844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:51,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:51,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:51,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346542079] [2024-06-28 00:04:51,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:52,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:52,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 299 transitions, 3448 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:52,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:52,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:52,686 INFO L124 PetriNetUnfolderBase]: 695/1248 cut-off events. [2024-06-28 00:04:52,686 INFO L125 PetriNetUnfolderBase]: For 141452/141452 co-relation queries the response was YES. [2024-06-28 00:04:52,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9698 conditions, 1248 events. 695/1248 cut-off events. For 141452/141452 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6538 event pairs, 155 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 9564. Up to 1009 conditions per place. [2024-06-28 00:04:52,705 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 234 selfloop transitions, 81 changer transitions 0/317 dead transitions. [2024-06-28 00:04:52,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 317 transitions, 4317 flow [2024-06-28 00:04:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:04:52,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:04:52,707 INFO L175 Difference]: Start difference. First operand has 308 places, 299 transitions, 3448 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:04:52,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 317 transitions, 4317 flow [2024-06-28 00:04:53,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 317 transitions, 4163 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:04:53,387 INFO L231 Difference]: Finished difference. Result has 311 places, 300 transitions, 3474 flow [2024-06-28 00:04:53,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3474, PETRI_PLACES=311, PETRI_TRANSITIONS=300} [2024-06-28 00:04:53,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 00:04:53,388 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 300 transitions, 3474 flow [2024-06-28 00:04:53,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:53,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:53,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:04:53,389 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 583115440, now seen corresponding path program 2 times [2024-06-28 00:04:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:53,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727555326] [2024-06-28 00:04:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:55,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:55,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727555326] [2024-06-28 00:04:55,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727555326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:55,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:55,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035135035] [2024-06-28 00:04:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:55,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:55,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:55,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:55,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 300 transitions, 3474 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:55,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:55,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:55,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:56,446 INFO L124 PetriNetUnfolderBase]: 701/1258 cut-off events. [2024-06-28 00:04:56,447 INFO L125 PetriNetUnfolderBase]: For 144623/144623 co-relation queries the response was YES. [2024-06-28 00:04:56,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 1258 events. 701/1258 cut-off events. For 144623/144623 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6580 event pairs, 167 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 9697. Up to 1049 conditions per place. [2024-06-28 00:04:56,465 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 250 selfloop transitions, 62 changer transitions 0/314 dead transitions. [2024-06-28 00:04:56,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 314 transitions, 4173 flow [2024-06-28 00:04:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:04:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:04:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:04:56,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:04:56,466 INFO L175 Difference]: Start difference. First operand has 311 places, 300 transitions, 3474 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:04:56,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 314 transitions, 4173 flow [2024-06-28 00:04:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 314 transitions, 4002 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:04:57,094 INFO L231 Difference]: Finished difference. Result has 313 places, 302 transitions, 3475 flow [2024-06-28 00:04:57,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3475, PETRI_PLACES=313, PETRI_TRANSITIONS=302} [2024-06-28 00:04:57,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 00:04:57,095 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 302 transitions, 3475 flow [2024-06-28 00:04:57,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:57,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:57,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:04:57,096 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:04:57,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:57,098 INFO L85 PathProgramCache]: Analyzing trace with hash 117369600, now seen corresponding path program 5 times [2024-06-28 00:04:57,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:57,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856574867] [2024-06-28 00:04:57,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:57,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:59,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856574867] [2024-06-28 00:04:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856574867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:59,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:59,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:04:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951635712] [2024-06-28 00:04:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:04:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:04:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:04:59,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:04:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 302 transitions, 3475 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:04:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:00,080 INFO L124 PetriNetUnfolderBase]: 721/1302 cut-off events. [2024-06-28 00:05:00,081 INFO L125 PetriNetUnfolderBase]: For 186461/186461 co-relation queries the response was YES. [2024-06-28 00:05:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10010 conditions, 1302 events. 721/1302 cut-off events. For 186461/186461 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6893 event pairs, 171 based on Foata normal form. 12/1312 useless extension candidates. Maximal degree in co-relation 9874. Up to 1042 conditions per place. [2024-06-28 00:05:00,100 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 249 selfloop transitions, 60 changer transitions 9/320 dead transitions. [2024-06-28 00:05:00,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 320 transitions, 4210 flow [2024-06-28 00:05:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:00,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:05:00,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:05:00,101 INFO L175 Difference]: Start difference. First operand has 313 places, 302 transitions, 3475 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:05:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 320 transitions, 4210 flow [2024-06-28 00:05:00,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 320 transitions, 4052 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:00,822 INFO L231 Difference]: Finished difference. Result has 314 places, 299 transitions, 3418 flow [2024-06-28 00:05:00,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3317, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3418, PETRI_PLACES=314, PETRI_TRANSITIONS=299} [2024-06-28 00:05:00,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 00:05:00,824 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 299 transitions, 3418 flow [2024-06-28 00:05:00,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:00,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:00,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:00,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:05:00,826 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:00,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:00,827 INFO L85 PathProgramCache]: Analyzing trace with hash 117369786, now seen corresponding path program 3 times [2024-06-28 00:05:00,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:00,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288075217] [2024-06-28 00:05:00,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:00,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288075217] [2024-06-28 00:05:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288075217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:02,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:02,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:02,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236773424] [2024-06-28 00:05:02,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:02,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:03,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:03,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 299 transitions, 3418 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:03,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:03,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:03,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:03,493 INFO L124 PetriNetUnfolderBase]: 701/1262 cut-off events. [2024-06-28 00:05:03,493 INFO L125 PetriNetUnfolderBase]: For 151112/151112 co-relation queries the response was YES. [2024-06-28 00:05:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 1262 events. 701/1262 cut-off events. For 151112/151112 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6659 event pairs, 166 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 9720. Up to 1133 conditions per place. [2024-06-28 00:05:03,509 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 261 selfloop transitions, 50 changer transitions 0/313 dead transitions. [2024-06-28 00:05:03,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 313 transitions, 4121 flow [2024-06-28 00:05:03,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:05:03,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 00:05:03,511 INFO L175 Difference]: Start difference. First operand has 314 places, 299 transitions, 3418 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:05:03,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 313 transitions, 4121 flow [2024-06-28 00:05:03,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 313 transitions, 3983 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:05:03,995 INFO L231 Difference]: Finished difference. Result has 313 places, 301 transitions, 3431 flow [2024-06-28 00:05:03,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3431, PETRI_PLACES=313, PETRI_TRANSITIONS=301} [2024-06-28 00:05:03,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 00:05:03,996 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 301 transitions, 3431 flow [2024-06-28 00:05:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:03,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:03,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:03,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:05:03,997 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:03,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash 117196806, now seen corresponding path program 4 times [2024-06-28 00:05:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:03,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431061585] [2024-06-28 00:05:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:03,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431061585] [2024-06-28 00:05:05,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431061585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:05,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:05,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528507412] [2024-06-28 00:05:05,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:06,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:06,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 301 transitions, 3431 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:06,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:06,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:06,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:06,608 INFO L124 PetriNetUnfolderBase]: 707/1272 cut-off events. [2024-06-28 00:05:06,608 INFO L125 PetriNetUnfolderBase]: For 151106/151106 co-relation queries the response was YES. [2024-06-28 00:05:06,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9898 conditions, 1272 events. 707/1272 cut-off events. For 151106/151106 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6713 event pairs, 169 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9762. Up to 1140 conditions per place. [2024-06-28 00:05:06,627 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 264 selfloop transitions, 50 changer transitions 0/316 dead transitions. [2024-06-28 00:05:06,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 316 transitions, 4146 flow [2024-06-28 00:05:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 00:05:06,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 00:05:06,628 INFO L175 Difference]: Start difference. First operand has 313 places, 301 transitions, 3431 flow. Second operand 10 states and 123 transitions. [2024-06-28 00:05:06,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 316 transitions, 4146 flow [2024-06-28 00:05:07,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 316 transitions, 4056 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:07,264 INFO L231 Difference]: Finished difference. Result has 316 places, 303 transitions, 3492 flow [2024-06-28 00:05:07,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3492, PETRI_PLACES=316, PETRI_TRANSITIONS=303} [2024-06-28 00:05:07,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 00:05:07,279 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 303 transitions, 3492 flow [2024-06-28 00:05:07,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:07,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:07,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:07,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:05:07,280 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:07,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -290804916, now seen corresponding path program 6 times [2024-06-28 00:05:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702964034] [2024-06-28 00:05:07,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:07,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:09,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:09,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702964034] [2024-06-28 00:05:09,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702964034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:09,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:09,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153444063] [2024-06-28 00:05:09,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:09,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:09,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:09,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:09,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 303 transitions, 3492 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:09,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:09,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:09,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:10,075 INFO L124 PetriNetUnfolderBase]: 711/1280 cut-off events. [2024-06-28 00:05:10,075 INFO L125 PetriNetUnfolderBase]: For 154541/154541 co-relation queries the response was YES. [2024-06-28 00:05:10,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9971 conditions, 1280 events. 711/1280 cut-off events. For 154541/154541 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6775 event pairs, 171 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9834. Up to 1064 conditions per place. [2024-06-28 00:05:10,090 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 251 selfloop transitions, 63 changer transitions 0/316 dead transitions. [2024-06-28 00:05:10,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 316 transitions, 4169 flow [2024-06-28 00:05:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:05:10,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:05:10,091 INFO L175 Difference]: Start difference. First operand has 316 places, 303 transitions, 3492 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:05:10,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 316 transitions, 4169 flow [2024-06-28 00:05:10,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 316 transitions, 4041 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:10,617 INFO L231 Difference]: Finished difference. Result has 319 places, 304 transitions, 3512 flow [2024-06-28 00:05:10,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3512, PETRI_PLACES=319, PETRI_TRANSITIONS=304} [2024-06-28 00:05:10,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 00:05:10,618 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 304 transitions, 3512 flow [2024-06-28 00:05:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:10,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:10,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:05:10,618 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:10,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 582931114, now seen corresponding path program 7 times [2024-06-28 00:05:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:10,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096063832] [2024-06-28 00:05:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:12,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096063832] [2024-06-28 00:05:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096063832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:12,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:12,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600904794] [2024-06-28 00:05:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:12,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:12,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:12,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 304 transitions, 3512 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:12,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:12,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:12,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:12,816 INFO L124 PetriNetUnfolderBase]: 715/1288 cut-off events. [2024-06-28 00:05:12,817 INFO L125 PetriNetUnfolderBase]: For 157792/157792 co-relation queries the response was YES. [2024-06-28 00:05:12,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 1288 events. 715/1288 cut-off events. For 157792/157792 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6835 event pairs, 166 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9910. Up to 1151 conditions per place. [2024-06-28 00:05:12,834 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 47 changer transitions 0/317 dead transitions. [2024-06-28 00:05:12,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 317 transitions, 4188 flow [2024-06-28 00:05:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 00:05:12,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 00:05:12,835 INFO L175 Difference]: Start difference. First operand has 319 places, 304 transitions, 3512 flow. Second operand 10 states and 119 transitions. [2024-06-28 00:05:12,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 317 transitions, 4188 flow [2024-06-28 00:05:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 317 transitions, 4052 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:13,370 INFO L231 Difference]: Finished difference. Result has 320 places, 305 transitions, 3494 flow [2024-06-28 00:05:13,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3494, PETRI_PLACES=320, PETRI_TRANSITIONS=305} [2024-06-28 00:05:13,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-28 00:05:13,371 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 305 transitions, 3494 flow [2024-06-28 00:05:13,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:13,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:13,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:05:13,372 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:13,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash 112727970, now seen corresponding path program 8 times [2024-06-28 00:05:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709168668] [2024-06-28 00:05:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:13,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:15,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:15,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709168668] [2024-06-28 00:05:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709168668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:15,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:15,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790161623] [2024-06-28 00:05:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:15,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:15,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:15,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 305 transitions, 3494 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:15,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:15,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:15,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:15,863 INFO L124 PetriNetUnfolderBase]: 719/1296 cut-off events. [2024-06-28 00:05:15,864 INFO L125 PetriNetUnfolderBase]: For 161093/161093 co-relation queries the response was YES. [2024-06-28 00:05:15,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10095 conditions, 1296 events. 719/1296 cut-off events. For 161093/161093 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6906 event pairs, 173 based on Foata normal form. 2/1296 useless extension candidates. Maximal degree in co-relation 9956. Up to 1161 conditions per place. [2024-06-28 00:05:15,883 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 264 selfloop transitions, 52 changer transitions 0/318 dead transitions. [2024-06-28 00:05:15,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 318 transitions, 4181 flow [2024-06-28 00:05:15,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:15,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:05:15,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 00:05:15,885 INFO L175 Difference]: Start difference. First operand has 320 places, 305 transitions, 3494 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:05:15,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 318 transitions, 4181 flow [2024-06-28 00:05:16,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 318 transitions, 4075 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:16,674 INFO L231 Difference]: Finished difference. Result has 322 places, 306 transitions, 3518 flow [2024-06-28 00:05:16,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3518, PETRI_PLACES=322, PETRI_TRANSITIONS=306} [2024-06-28 00:05:16,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 00:05:16,675 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 306 transitions, 3518 flow [2024-06-28 00:05:16,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:16,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:16,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:16,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:05:16,676 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:16,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:16,676 INFO L85 PathProgramCache]: Analyzing trace with hash 578467300, now seen corresponding path program 5 times [2024-06-28 00:05:16,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:16,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220990695] [2024-06-28 00:05:16,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:16,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:18,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:18,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220990695] [2024-06-28 00:05:18,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220990695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:18,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:18,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368495348] [2024-06-28 00:05:18,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:18,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:18,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 306 transitions, 3518 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:18,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:18,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:18,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:19,431 INFO L124 PetriNetUnfolderBase]: 725/1306 cut-off events. [2024-06-28 00:05:19,431 INFO L125 PetriNetUnfolderBase]: For 164714/164714 co-relation queries the response was YES. [2024-06-28 00:05:19,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1306 events. 725/1306 cut-off events. For 164714/164714 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6961 event pairs, 174 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 10066. Up to 1156 conditions per place. [2024-06-28 00:05:19,451 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 263 selfloop transitions, 60 changer transitions 0/325 dead transitions. [2024-06-28 00:05:19,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 325 transitions, 4291 flow [2024-06-28 00:05:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 00:05:19,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 00:05:19,453 INFO L175 Difference]: Start difference. First operand has 322 places, 306 transitions, 3518 flow. Second operand 11 states and 134 transitions. [2024-06-28 00:05:19,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 325 transitions, 4291 flow [2024-06-28 00:05:20,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 325 transitions, 4173 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:20,238 INFO L231 Difference]: Finished difference. Result has 327 places, 313 transitions, 3643 flow [2024-06-28 00:05:20,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3643, PETRI_PLACES=327, PETRI_TRANSITIONS=313} [2024-06-28 00:05:20,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 00:05:20,239 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 313 transitions, 3643 flow [2024-06-28 00:05:20,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:20,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:20,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:20,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:05:20,240 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:20,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -295278216, now seen corresponding path program 9 times [2024-06-28 00:05:20,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:20,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929746035] [2024-06-28 00:05:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:20,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:22,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929746035] [2024-06-28 00:05:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929746035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:22,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930056242] [2024-06-28 00:05:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:22,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:22,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:22,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 313 transitions, 3643 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:22,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:22,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:23,050 INFO L124 PetriNetUnfolderBase]: 729/1314 cut-off events. [2024-06-28 00:05:23,050 INFO L125 PetriNetUnfolderBase]: For 171688/171688 co-relation queries the response was YES. [2024-06-28 00:05:23,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10387 conditions, 1314 events. 729/1314 cut-off events. For 171688/171688 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7029 event pairs, 172 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 10244. Up to 1174 conditions per place. [2024-06-28 00:05:23,068 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 50 changer transitions 0/326 dead transitions. [2024-06-28 00:05:23,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 326 transitions, 4341 flow [2024-06-28 00:05:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:05:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:05:23,070 INFO L175 Difference]: Start difference. First operand has 327 places, 313 transitions, 3643 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:05:23,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 326 transitions, 4341 flow [2024-06-28 00:05:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 326 transitions, 4212 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:23,765 INFO L231 Difference]: Finished difference. Result has 332 places, 314 transitions, 3642 flow [2024-06-28 00:05:23,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3642, PETRI_PLACES=332, PETRI_TRANSITIONS=314} [2024-06-28 00:05:23,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-28 00:05:23,766 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 314 transitions, 3642 flow [2024-06-28 00:05:23,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:23,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:23,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:05:23,767 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:23,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash -295393536, now seen corresponding path program 10 times [2024-06-28 00:05:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:23,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269882120] [2024-06-28 00:05:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:23,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:25,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269882120] [2024-06-28 00:05:25,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269882120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:25,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:25,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29554233] [2024-06-28 00:05:25,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:25,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:25,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:25,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:25,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:25,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 314 transitions, 3642 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:25,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:25,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:25,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:26,332 INFO L124 PetriNetUnfolderBase]: 733/1322 cut-off events. [2024-06-28 00:05:26,333 INFO L125 PetriNetUnfolderBase]: For 175099/175099 co-relation queries the response was YES. [2024-06-28 00:05:26,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10475 conditions, 1322 events. 733/1322 cut-off events. For 175099/175099 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7079 event pairs, 170 based on Foata normal form. 2/1322 useless extension candidates. Maximal degree in co-relation 10330. Up to 1134 conditions per place. [2024-06-28 00:05:26,354 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 272 selfloop transitions, 54 changer transitions 0/328 dead transitions. [2024-06-28 00:05:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 328 transitions, 4348 flow [2024-06-28 00:05:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:05:26,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:05:26,356 INFO L175 Difference]: Start difference. First operand has 332 places, 314 transitions, 3642 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:05:26,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 328 transitions, 4348 flow [2024-06-28 00:05:27,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 4228 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:27,159 INFO L231 Difference]: Finished difference. Result has 334 places, 315 transitions, 3660 flow [2024-06-28 00:05:27,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3660, PETRI_PLACES=334, PETRI_TRANSITIONS=315} [2024-06-28 00:05:27,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 00:05:27,160 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 315 transitions, 3660 flow [2024-06-28 00:05:27,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:27,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:27,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:05:27,161 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:27,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:27,162 INFO L85 PathProgramCache]: Analyzing trace with hash -295988182, now seen corresponding path program 11 times [2024-06-28 00:05:27,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:27,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446139564] [2024-06-28 00:05:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446139564] [2024-06-28 00:05:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446139564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:28,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531555153] [2024-06-28 00:05:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:29,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:29,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 315 transitions, 3660 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:29,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:29,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:29,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:29,698 INFO L124 PetriNetUnfolderBase]: 737/1330 cut-off events. [2024-06-28 00:05:29,699 INFO L125 PetriNetUnfolderBase]: For 178844/178844 co-relation queries the response was YES. [2024-06-28 00:05:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 1330 events. 737/1330 cut-off events. For 178844/178844 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7153 event pairs, 170 based on Foata normal form. 2/1330 useless extension candidates. Maximal degree in co-relation 10420. Up to 1079 conditions per place. [2024-06-28 00:05:29,719 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 257 selfloop transitions, 74 changer transitions 0/333 dead transitions. [2024-06-28 00:05:29,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 333 transitions, 4590 flow [2024-06-28 00:05:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:05:29,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:05:29,721 INFO L175 Difference]: Start difference. First operand has 334 places, 315 transitions, 3660 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:05:29,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 333 transitions, 4590 flow [2024-06-28 00:05:30,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 333 transitions, 4464 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:30,701 INFO L231 Difference]: Finished difference. Result has 336 places, 316 transitions, 3712 flow [2024-06-28 00:05:30,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3712, PETRI_PLACES=336, PETRI_TRANSITIONS=316} [2024-06-28 00:05:30,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 00:05:30,702 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 316 transitions, 3712 flow [2024-06-28 00:05:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:30,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:30,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:30,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:05:30,703 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:30,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash -295868212, now seen corresponding path program 12 times [2024-06-28 00:05:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728914216] [2024-06-28 00:05:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:30,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:32,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:32,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728914216] [2024-06-28 00:05:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728914216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941144490] [2024-06-28 00:05:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:32,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:32,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:32,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 316 transitions, 3712 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:32,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:32,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:33,079 INFO L124 PetriNetUnfolderBase]: 741/1338 cut-off events. [2024-06-28 00:05:33,079 INFO L125 PetriNetUnfolderBase]: For 182424/182424 co-relation queries the response was YES. [2024-06-28 00:05:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10677 conditions, 1338 events. 741/1338 cut-off events. For 182424/182424 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7211 event pairs, 180 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 10530. Up to 1180 conditions per place. [2024-06-28 00:05:33,098 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 72 changer transitions 0/330 dead transitions. [2024-06-28 00:05:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 330 transitions, 4430 flow [2024-06-28 00:05:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:05:33,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:05:33,100 INFO L175 Difference]: Start difference. First operand has 336 places, 316 transitions, 3712 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:05:33,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 330 transitions, 4430 flow [2024-06-28 00:05:33,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 330 transitions, 4232 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:33,804 INFO L231 Difference]: Finished difference. Result has 338 places, 317 transitions, 3692 flow [2024-06-28 00:05:33,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3692, PETRI_PLACES=338, PETRI_TRANSITIONS=317} [2024-06-28 00:05:33,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 00:05:33,811 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 317 transitions, 3692 flow [2024-06-28 00:05:33,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:33,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:05:33,815 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:33,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:33,816 INFO L85 PathProgramCache]: Analyzing trace with hash -295868026, now seen corresponding path program 6 times [2024-06-28 00:05:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:33,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054945514] [2024-06-28 00:05:33,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:33,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054945514] [2024-06-28 00:05:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054945514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:35,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:35,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:35,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795315200] [2024-06-28 00:05:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:35,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:35,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 317 transitions, 3692 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:35,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:35,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:35,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:36,586 INFO L124 PetriNetUnfolderBase]: 757/1364 cut-off events. [2024-06-28 00:05:36,586 INFO L125 PetriNetUnfolderBase]: For 196550/196550 co-relation queries the response was YES. [2024-06-28 00:05:36,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11051 conditions, 1364 events. 757/1364 cut-off events. For 196550/196550 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7382 event pairs, 170 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 10903. Up to 1160 conditions per place. [2024-06-28 00:05:36,609 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 259 selfloop transitions, 80 changer transitions 0/341 dead transitions. [2024-06-28 00:05:36,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 341 transitions, 4781 flow [2024-06-28 00:05:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 00:05:36,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 00:05:36,611 INFO L175 Difference]: Start difference. First operand has 338 places, 317 transitions, 3692 flow. Second operand 11 states and 141 transitions. [2024-06-28 00:05:36,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 341 transitions, 4781 flow [2024-06-28 00:05:37,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 4621 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:37,457 INFO L231 Difference]: Finished difference. Result has 343 places, 327 transitions, 3944 flow [2024-06-28 00:05:37,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3944, PETRI_PLACES=343, PETRI_TRANSITIONS=327} [2024-06-28 00:05:37,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 00:05:37,458 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 327 transitions, 3944 flow [2024-06-28 00:05:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:37,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:05:37,459 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -295872862, now seen corresponding path program 13 times [2024-06-28 00:05:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202327027] [2024-06-28 00:05:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:39,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202327027] [2024-06-28 00:05:39,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202327027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:39,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:39,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:39,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797218212] [2024-06-28 00:05:39,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:39,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:39,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 327 transitions, 3944 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:39,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:39,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:39,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:40,473 INFO L124 PetriNetUnfolderBase]: 761/1372 cut-off events. [2024-06-28 00:05:40,473 INFO L125 PetriNetUnfolderBase]: For 204650/204650 co-relation queries the response was YES. [2024-06-28 00:05:40,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11321 conditions, 1372 events. 761/1372 cut-off events. For 204650/204650 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7435 event pairs, 169 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 11169. Up to 1200 conditions per place. [2024-06-28 00:05:40,501 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 73 changer transitions 0/342 dead transitions. [2024-06-28 00:05:40,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 342 transitions, 4684 flow [2024-06-28 00:05:40,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:40,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 00:05:40,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 00:05:40,509 INFO L175 Difference]: Start difference. First operand has 343 places, 327 transitions, 3944 flow. Second operand 11 states and 130 transitions. [2024-06-28 00:05:40,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 342 transitions, 4684 flow [2024-06-28 00:05:41,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 342 transitions, 4591 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 00:05:41,465 INFO L231 Difference]: Finished difference. Result has 350 places, 328 transitions, 4027 flow [2024-06-28 00:05:41,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4027, PETRI_PLACES=350, PETRI_TRANSITIONS=328} [2024-06-28 00:05:41,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 00:05:41,466 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 328 transitions, 4027 flow [2024-06-28 00:05:41,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:41,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:41,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:05:41,467 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:41,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -118736506, now seen corresponding path program 7 times [2024-06-28 00:05:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332344606] [2024-06-28 00:05:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:43,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332344606] [2024-06-28 00:05:43,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332344606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:43,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:43,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880845813] [2024-06-28 00:05:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:43,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:43,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:43,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 328 transitions, 4027 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:43,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:43,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:43,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:44,444 INFO L124 PetriNetUnfolderBase]: 767/1382 cut-off events. [2024-06-28 00:05:44,445 INFO L125 PetriNetUnfolderBase]: For 208928/208928 co-relation queries the response was YES. [2024-06-28 00:05:44,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11532 conditions, 1382 events. 767/1382 cut-off events. For 208928/208928 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7529 event pairs, 173 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 11378. Up to 1253 conditions per place. [2024-06-28 00:05:44,467 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 286 selfloop transitions, 54 changer transitions 0/342 dead transitions. [2024-06-28 00:05:44,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 342 transitions, 4815 flow [2024-06-28 00:05:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 00:05:44,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 00:05:44,468 INFO L175 Difference]: Start difference. First operand has 350 places, 328 transitions, 4027 flow. Second operand 11 states and 127 transitions. [2024-06-28 00:05:44,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 342 transitions, 4815 flow [2024-06-28 00:05:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 342 transitions, 4649 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:45,417 INFO L231 Difference]: Finished difference. Result has 352 places, 331 transitions, 4060 flow [2024-06-28 00:05:45,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3861, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4060, PETRI_PLACES=352, PETRI_TRANSITIONS=331} [2024-06-28 00:05:45,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 00:05:45,418 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 331 transitions, 4060 flow [2024-06-28 00:05:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:45,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:05:45,419 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,420 INFO L85 PathProgramCache]: Analyzing trace with hash -118736692, now seen corresponding path program 14 times [2024-06-28 00:05:45,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051067991] [2024-06-28 00:05:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:47,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051067991] [2024-06-28 00:05:47,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051067991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:47,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:47,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:47,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601423747] [2024-06-28 00:05:47,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:47,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:47,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:47,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:47,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 331 transitions, 4060 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:47,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:47,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:47,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:47,655 INFO L124 PetriNetUnfolderBase]: 771/1390 cut-off events. [2024-06-28 00:05:47,656 INFO L125 PetriNetUnfolderBase]: For 213093/213093 co-relation queries the response was YES. [2024-06-28 00:05:47,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11571 conditions, 1390 events. 771/1390 cut-off events. For 213093/213093 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7559 event pairs, 175 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 11416. Up to 1279 conditions per place. [2024-06-28 00:05:47,681 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 297 selfloop transitions, 44 changer transitions 0/343 dead transitions. [2024-06-28 00:05:47,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 343 transitions, 4794 flow [2024-06-28 00:05:47,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:47,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 00:05:47,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 00:05:47,683 INFO L175 Difference]: Start difference. First operand has 352 places, 331 transitions, 4060 flow. Second operand 10 states and 116 transitions. [2024-06-28 00:05:47,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 343 transitions, 4794 flow [2024-06-28 00:05:48,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 343 transitions, 4646 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:48,581 INFO L231 Difference]: Finished difference. Result has 355 places, 332 transitions, 4032 flow [2024-06-28 00:05:48,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3912, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4032, PETRI_PLACES=355, PETRI_TRANSITIONS=332} [2024-06-28 00:05:48,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 00:05:48,581 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 332 transitions, 4032 flow [2024-06-28 00:05:48,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:48,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:48,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:48,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:05:48,582 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:48,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:48,583 INFO L85 PathProgramCache]: Analyzing trace with hash -291404212, now seen corresponding path program 15 times [2024-06-28 00:05:48,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:48,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557417495] [2024-06-28 00:05:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:48,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:50,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:50,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557417495] [2024-06-28 00:05:50,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557417495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:50,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:50,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:50,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508536758] [2024-06-28 00:05:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:50,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:50,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:50,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:50,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 332 transitions, 4032 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:50,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:50,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:50,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:51,053 INFO L124 PetriNetUnfolderBase]: 782/1411 cut-off events. [2024-06-28 00:05:51,053 INFO L125 PetriNetUnfolderBase]: For 228599/228599 co-relation queries the response was YES. [2024-06-28 00:05:51,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 1411 events. 782/1411 cut-off events. For 228599/228599 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7740 event pairs, 178 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 11775. Up to 1275 conditions per place. [2024-06-28 00:05:51,079 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 52 changer transitions 0/348 dead transitions. [2024-06-28 00:05:51,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 348 transitions, 5026 flow [2024-06-28 00:05:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:05:51,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 00:05:51,082 INFO L175 Difference]: Start difference. First operand has 355 places, 332 transitions, 4032 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:05:51,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 348 transitions, 5026 flow [2024-06-28 00:05:52,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 348 transitions, 4931 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:52,106 INFO L231 Difference]: Finished difference. Result has 358 places, 334 transitions, 4103 flow [2024-06-28 00:05:52,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4103, PETRI_PLACES=358, PETRI_TRANSITIONS=334} [2024-06-28 00:05:52,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 00:05:52,107 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 334 transitions, 4103 flow [2024-06-28 00:05:52,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:52,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:52,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:05:52,108 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:52,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash -291226396, now seen corresponding path program 8 times [2024-06-28 00:05:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748022840] [2024-06-28 00:05:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:54,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:54,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748022840] [2024-06-28 00:05:54,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748022840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:05:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330857970] [2024-06-28 00:05:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:54,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:05:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:05:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:05:54,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:54,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 334 transitions, 4103 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:54,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:54,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:54,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:54,869 INFO L124 PetriNetUnfolderBase]: 788/1421 cut-off events. [2024-06-28 00:05:54,869 INFO L125 PetriNetUnfolderBase]: For 233205/233205 co-relation queries the response was YES. [2024-06-28 00:05:54,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12071 conditions, 1421 events. 788/1421 cut-off events. For 233205/233205 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7803 event pairs, 180 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 11914. Up to 1292 conditions per place. [2024-06-28 00:05:54,889 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 287 selfloop transitions, 60 changer transitions 0/349 dead transitions. [2024-06-28 00:05:54,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 349 transitions, 4915 flow [2024-06-28 00:05:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:05:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:05:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 00:05:54,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 00:05:54,891 INFO L175 Difference]: Start difference. First operand has 358 places, 334 transitions, 4103 flow. Second operand 11 states and 131 transitions. [2024-06-28 00:05:54,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 349 transitions, 4915 flow [2024-06-28 00:05:55,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 349 transitions, 4822 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:55,769 INFO L231 Difference]: Finished difference. Result has 363 places, 337 transitions, 4227 flow [2024-06-28 00:05:55,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4227, PETRI_PLACES=363, PETRI_TRANSITIONS=337} [2024-06-28 00:05:55,770 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 00:05:55,770 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 337 transitions, 4227 flow [2024-06-28 00:05:55,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:55,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:55,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:55,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:05:55,770 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:55,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -291226582, now seen corresponding path program 16 times [2024-06-28 00:05:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494043733] [2024-06-28 00:05:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:05:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:57,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494043733] [2024-06-28 00:05:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494043733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:57,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:57,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:05:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444308435] [2024-06-28 00:05:57,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:57,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:05:57,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:57,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:05:57,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:05:57,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:05:57,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 337 transitions, 4227 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:57,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:57,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:05:57,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:57,936 INFO L124 PetriNetUnfolderBase]: 792/1429 cut-off events. [2024-06-28 00:05:57,936 INFO L125 PetriNetUnfolderBase]: For 237808/237808 co-relation queries the response was YES. [2024-06-28 00:05:57,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12239 conditions, 1429 events. 792/1429 cut-off events. For 237808/237808 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7879 event pairs, 176 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 12080. Up to 1318 conditions per place. [2024-06-28 00:05:57,954 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 48 changer transitions 0/350 dead transitions. [2024-06-28 00:05:57,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 350 transitions, 4983 flow [2024-06-28 00:05:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:05:57,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:05:57,956 INFO L175 Difference]: Start difference. First operand has 363 places, 337 transitions, 4227 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:05:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 350 transitions, 4983 flow [2024-06-28 00:05:58,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 350 transitions, 4792 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:58,715 INFO L231 Difference]: Finished difference. Result has 364 places, 338 transitions, 4168 flow [2024-06-28 00:05:58,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4168, PETRI_PLACES=364, PETRI_TRANSITIONS=338} [2024-06-28 00:05:58,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 00:05:58,716 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 338 transitions, 4168 flow [2024-06-28 00:05:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:05:58,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:58,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:05:58,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:05:58,717 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:05:58,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash -757138706, now seen corresponding path program 17 times [2024-06-28 00:05:58,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:58,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453458866] [2024-06-28 00:05:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:58,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:00,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:00,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453458866] [2024-06-28 00:06:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453458866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:00,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559344736] [2024-06-28 00:06:00,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:00,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:00,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:00,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 338 transitions, 4168 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:00,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:00,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:00,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:01,050 INFO L124 PetriNetUnfolderBase]: 789/1424 cut-off events. [2024-06-28 00:06:01,050 INFO L125 PetriNetUnfolderBase]: For 229876/229876 co-relation queries the response was YES. [2024-06-28 00:06:01,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11940 conditions, 1424 events. 789/1424 cut-off events. For 229876/229876 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7850 event pairs, 177 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 11780. Up to 1307 conditions per place. [2024-06-28 00:06:01,068 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 51 changer transitions 0/350 dead transitions. [2024-06-28 00:06:01,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 350 transitions, 4894 flow [2024-06-28 00:06:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:06:01,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:06:01,069 INFO L175 Difference]: Start difference. First operand has 364 places, 338 transitions, 4168 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:06:01,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 350 transitions, 4894 flow [2024-06-28 00:06:01,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 350 transitions, 4749 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:01,829 INFO L231 Difference]: Finished difference. Result has 366 places, 338 transitions, 4129 flow [2024-06-28 00:06:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4129, PETRI_PLACES=366, PETRI_TRANSITIONS=338} [2024-06-28 00:06:01,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:01,830 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 338 transitions, 4129 flow [2024-06-28 00:06:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:01,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:06:01,830 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -291399376, now seen corresponding path program 9 times [2024-06-28 00:06:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824772515] [2024-06-28 00:06:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:03,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824772515] [2024-06-28 00:06:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824772515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:03,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156324344] [2024-06-28 00:06:03,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:03,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:03,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:03,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:03,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:03,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:03,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 338 transitions, 4129 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:03,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:03,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:03,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:04,446 INFO L124 PetriNetUnfolderBase]: 795/1434 cut-off events. [2024-06-28 00:06:04,446 INFO L125 PetriNetUnfolderBase]: For 233638/233638 co-relation queries the response was YES. [2024-06-28 00:06:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12001 conditions, 1434 events. 795/1434 cut-off events. For 233638/233638 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7909 event pairs, 175 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 11840. Up to 1293 conditions per place. [2024-06-28 00:06:04,470 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 287 selfloop transitions, 65 changer transitions 0/354 dead transitions. [2024-06-28 00:06:04,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 354 transitions, 4962 flow [2024-06-28 00:06:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:06:04,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:06:04,472 INFO L175 Difference]: Start difference. First operand has 366 places, 338 transitions, 4129 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:06:04,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 354 transitions, 4962 flow [2024-06-28 00:06:05,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 354 transitions, 4854 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:05,439 INFO L231 Difference]: Finished difference. Result has 366 places, 341 transitions, 4254 flow [2024-06-28 00:06:05,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=366, PETRI_TRANSITIONS=341} [2024-06-28 00:06:05,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:06:05,460 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 341 transitions, 4254 flow [2024-06-28 00:06:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:05,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:05,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:05,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:06:05,461 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:05,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash -118490428, now seen corresponding path program 1 times [2024-06-28 00:06:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058288410] [2024-06-28 00:06:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:08,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058288410] [2024-06-28 00:06:08,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058288410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:08,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182641021] [2024-06-28 00:06:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:08,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:08,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:08,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 341 transitions, 4254 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:08,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:08,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:08,735 INFO L124 PetriNetUnfolderBase]: 803/1450 cut-off events. [2024-06-28 00:06:08,736 INFO L125 PetriNetUnfolderBase]: For 250651/250651 co-relation queries the response was YES. [2024-06-28 00:06:08,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12177 conditions, 1450 events. 803/1450 cut-off events. For 250651/250651 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8028 event pairs, 174 based on Foata normal form. 4/1452 useless extension candidates. Maximal degree in co-relation 12015. Up to 1237 conditions per place. [2024-06-28 00:06:08,750 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 293 selfloop transitions, 60 changer transitions 0/355 dead transitions. [2024-06-28 00:06:08,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 355 transitions, 5031 flow [2024-06-28 00:06:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:08,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:06:08,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:06:08,752 INFO L175 Difference]: Start difference. First operand has 366 places, 341 transitions, 4254 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:06:08,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 355 transitions, 5031 flow [2024-06-28 00:06:09,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 355 transitions, 4833 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:09,471 INFO L231 Difference]: Finished difference. Result has 369 places, 343 transitions, 4223 flow [2024-06-28 00:06:09,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4223, PETRI_PLACES=369, PETRI_TRANSITIONS=343} [2024-06-28 00:06:09,471 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 00:06:09,471 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 343 transitions, 4223 flow [2024-06-28 00:06:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:09,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:09,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:09,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:06:09,472 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:09,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash -590731760, now seen corresponding path program 10 times [2024-06-28 00:06:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:09,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052295997] [2024-06-28 00:06:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:11,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052295997] [2024-06-28 00:06:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052295997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:11,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:11,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129590496] [2024-06-28 00:06:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:11,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:11,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 343 transitions, 4223 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:11,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:11,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:11,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:11,818 INFO L124 PetriNetUnfolderBase]: 809/1460 cut-off events. [2024-06-28 00:06:11,819 INFO L125 PetriNetUnfolderBase]: For 242729/242729 co-relation queries the response was YES. [2024-06-28 00:06:11,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12281 conditions, 1460 events. 809/1460 cut-off events. For 242729/242729 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8114 event pairs, 179 based on Foata normal form. 2/1460 useless extension candidates. Maximal degree in co-relation 12118. Up to 1331 conditions per place. [2024-06-28 00:06:11,837 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 302 selfloop transitions, 53 changer transitions 0/357 dead transitions. [2024-06-28 00:06:11,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 357 transitions, 5059 flow [2024-06-28 00:06:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:06:11,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 00:06:11,838 INFO L175 Difference]: Start difference. First operand has 369 places, 343 transitions, 4223 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:06:11,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 357 transitions, 5059 flow [2024-06-28 00:06:12,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 357 transitions, 4913 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:12,688 INFO L231 Difference]: Finished difference. Result has 371 places, 346 transitions, 4292 flow [2024-06-28 00:06:12,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4292, PETRI_PLACES=371, PETRI_TRANSITIONS=346} [2024-06-28 00:06:12,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-28 00:06:12,689 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 346 transitions, 4292 flow [2024-06-28 00:06:12,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:12,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:12,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:12,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:06:12,690 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:12,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -590731946, now seen corresponding path program 18 times [2024-06-28 00:06:12,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:12,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460118100] [2024-06-28 00:06:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:12,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460118100] [2024-06-28 00:06:14,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460118100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:14,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:14,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:14,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61314874] [2024-06-28 00:06:14,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:14,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:14,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 346 transitions, 4292 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:14,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:14,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:14,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:15,169 INFO L124 PetriNetUnfolderBase]: 829/1504 cut-off events. [2024-06-28 00:06:15,170 INFO L125 PetriNetUnfolderBase]: For 310233/310233 co-relation queries the response was YES. [2024-06-28 00:06:15,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12479 conditions, 1504 events. 829/1504 cut-off events. For 310233/310233 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8408 event pairs, 182 based on Foata normal form. 12/1514 useless extension candidates. Maximal degree in co-relation 12315. Up to 1244 conditions per place. [2024-06-28 00:06:15,184 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 295 selfloop transitions, 60 changer transitions 9/366 dead transitions. [2024-06-28 00:06:15,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 366 transitions, 5153 flow [2024-06-28 00:06:15,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 00:06:15,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 00:06:15,185 INFO L175 Difference]: Start difference. First operand has 371 places, 346 transitions, 4292 flow. Second operand 11 states and 138 transitions. [2024-06-28 00:06:15,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 366 transitions, 5153 flow [2024-06-28 00:06:15,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 366 transitions, 4942 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:15,975 INFO L231 Difference]: Finished difference. Result has 372 places, 343 transitions, 4196 flow [2024-06-28 00:06:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4196, PETRI_PLACES=372, PETRI_TRANSITIONS=343} [2024-06-28 00:06:15,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-28 00:06:15,976 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 343 transitions, 4196 flow [2024-06-28 00:06:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:15,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:15,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:06:15,977 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:15,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash -125170432, now seen corresponding path program 19 times [2024-06-28 00:06:15,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:15,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348901415] [2024-06-28 00:06:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:17,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:17,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348901415] [2024-06-28 00:06:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348901415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:17,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:17,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:17,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215354482] [2024-06-28 00:06:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:17,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:17,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:17,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 343 transitions, 4196 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:17,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:17,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:17,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:18,092 INFO L124 PetriNetUnfolderBase]: 814/1475 cut-off events. [2024-06-28 00:06:18,092 INFO L125 PetriNetUnfolderBase]: For 264967/264967 co-relation queries the response was YES. [2024-06-28 00:06:18,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12638 conditions, 1475 events. 814/1475 cut-off events. For 264967/264967 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8249 event pairs, 176 based on Foata normal form. 2/1475 useless extension candidates. Maximal degree in co-relation 12473. Up to 1326 conditions per place. [2024-06-28 00:06:18,111 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 51 changer transitions 0/358 dead transitions. [2024-06-28 00:06:18,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 358 transitions, 5230 flow [2024-06-28 00:06:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 00:06:18,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:06:18,113 INFO L175 Difference]: Start difference. First operand has 372 places, 343 transitions, 4196 flow. Second operand 10 states and 120 transitions. [2024-06-28 00:06:18,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 358 transitions, 5230 flow [2024-06-28 00:06:18,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 358 transitions, 5083 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:18,921 INFO L231 Difference]: Finished difference. Result has 372 places, 345 transitions, 4221 flow [2024-06-28 00:06:18,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4221, PETRI_PLACES=372, PETRI_TRANSITIONS=345} [2024-06-28 00:06:18,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-28 00:06:18,922 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 345 transitions, 4221 flow [2024-06-28 00:06:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:18,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:18,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:06:18,922 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:18,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash -590904926, now seen corresponding path program 20 times [2024-06-28 00:06:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925206725] [2024-06-28 00:06:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:20,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:20,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925206725] [2024-06-28 00:06:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925206725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:20,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056828567] [2024-06-28 00:06:20,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:20,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:20,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:20,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:20,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:20,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 345 transitions, 4221 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:20,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:20,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:20,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:21,182 INFO L124 PetriNetUnfolderBase]: 811/1470 cut-off events. [2024-06-28 00:06:21,182 INFO L125 PetriNetUnfolderBase]: For 256071/256071 co-relation queries the response was YES. [2024-06-28 00:06:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12351 conditions, 1470 events. 811/1470 cut-off events. For 256071/256071 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8226 event pairs, 173 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 12185. Up to 1350 conditions per place. [2024-06-28 00:06:21,207 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 306 selfloop transitions, 48 changer transitions 0/356 dead transitions. [2024-06-28 00:06:21,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 356 transitions, 4955 flow [2024-06-28 00:06:21,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:06:21,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:06:21,209 INFO L175 Difference]: Start difference. First operand has 372 places, 345 transitions, 4221 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:06:21,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 356 transitions, 4955 flow [2024-06-28 00:06:22,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 4841 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:22,196 INFO L231 Difference]: Finished difference. Result has 377 places, 345 transitions, 4207 flow [2024-06-28 00:06:22,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4207, PETRI_PLACES=377, PETRI_TRANSITIONS=345} [2024-06-28 00:06:22,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 00:06:22,197 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 345 transitions, 4207 flow [2024-06-28 00:06:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:22,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:22,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:22,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:06:22,197 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:22,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -590904740, now seen corresponding path program 11 times [2024-06-28 00:06:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458252968] [2024-06-28 00:06:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458252968] [2024-06-28 00:06:24,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458252968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:24,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:24,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423556734] [2024-06-28 00:06:24,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:24,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:24,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:24,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 345 transitions, 4207 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:24,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:24,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:24,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:24,976 INFO L124 PetriNetUnfolderBase]: 817/1480 cut-off events. [2024-06-28 00:06:24,976 INFO L125 PetriNetUnfolderBase]: For 260073/260073 co-relation queries the response was YES. [2024-06-28 00:06:24,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12480 conditions, 1480 events. 817/1480 cut-off events. For 260073/260073 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8292 event pairs, 175 based on Foata normal form. 2/1480 useless extension candidates. Maximal degree in co-relation 12312. Up to 1339 conditions per place. [2024-06-28 00:06:24,995 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 300 selfloop transitions, 58 changer transitions 0/360 dead transitions. [2024-06-28 00:06:24,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 360 transitions, 5060 flow [2024-06-28 00:06:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 00:06:24,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 00:06:24,996 INFO L175 Difference]: Start difference. First operand has 377 places, 345 transitions, 4207 flow. Second operand 10 states and 123 transitions. [2024-06-28 00:06:24,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 360 transitions, 5060 flow [2024-06-28 00:06:25,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 360 transitions, 4954 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:25,873 INFO L231 Difference]: Finished difference. Result has 377 places, 348 transitions, 4332 flow [2024-06-28 00:06:25,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4332, PETRI_PLACES=377, PETRI_TRANSITIONS=348} [2024-06-28 00:06:25,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 00:06:25,873 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 348 transitions, 4332 flow [2024-06-28 00:06:25,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:25,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:25,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:25,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:06:25,874 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:25,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1219851892, now seen corresponding path program 2 times [2024-06-28 00:06:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:25,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348788995] [2024-06-28 00:06:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348788995] [2024-06-28 00:06:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348788995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903146868] [2024-06-28 00:06:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:28,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:28,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 348 transitions, 4332 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:28,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:28,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:28,735 INFO L124 PetriNetUnfolderBase]: 821/1487 cut-off events. [2024-06-28 00:06:28,735 INFO L125 PetriNetUnfolderBase]: For 264946/264946 co-relation queries the response was YES. [2024-06-28 00:06:28,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12609 conditions, 1487 events. 821/1487 cut-off events. For 264946/264946 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8366 event pairs, 171 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 12440. Up to 1417 conditions per place. [2024-06-28 00:06:28,761 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 329 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-28 00:06:28,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 361 transitions, 5114 flow [2024-06-28 00:06:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:06:28,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:06:28,763 INFO L175 Difference]: Start difference. First operand has 377 places, 348 transitions, 4332 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:06:28,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 361 transitions, 5114 flow [2024-06-28 00:06:29,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 361 transitions, 4940 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:29,900 INFO L231 Difference]: Finished difference. Result has 381 places, 349 transitions, 4252 flow [2024-06-28 00:06:29,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4252, PETRI_PLACES=381, PETRI_TRANSITIONS=349} [2024-06-28 00:06:29,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 00:06:29,901 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 349 transitions, 4252 flow [2024-06-28 00:06:29,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:29,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:29,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:06:29,903 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:29,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1628031274, now seen corresponding path program 3 times [2024-06-28 00:06:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683465697] [2024-06-28 00:06:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683465697] [2024-06-28 00:06:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683465697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:31,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:31,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:31,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817408220] [2024-06-28 00:06:31,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:31,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:31,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:31,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:31,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 349 transitions, 4252 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:31,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:31,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:32,223 INFO L124 PetriNetUnfolderBase]: 825/1495 cut-off events. [2024-06-28 00:06:32,224 INFO L125 PetriNetUnfolderBase]: For 268911/268911 co-relation queries the response was YES. [2024-06-28 00:06:32,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12602 conditions, 1495 events. 825/1495 cut-off events. For 268911/268911 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8396 event pairs, 177 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 12432. Up to 1461 conditions per place. [2024-06-28 00:06:32,246 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 340 selfloop transitions, 18 changer transitions 0/360 dead transitions. [2024-06-28 00:06:32,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 360 transitions, 5020 flow [2024-06-28 00:06:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:32,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:06:32,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 00:06:32,248 INFO L175 Difference]: Start difference. First operand has 381 places, 349 transitions, 4252 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:06:32,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 360 transitions, 5020 flow [2024-06-28 00:06:33,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 360 transitions, 4847 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 00:06:33,186 INFO L231 Difference]: Finished difference. Result has 380 places, 350 transitions, 4151 flow [2024-06-28 00:06:33,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4151, PETRI_PLACES=380, PETRI_TRANSITIONS=350} [2024-06-28 00:06:33,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 00:06:33,187 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 350 transitions, 4151 flow [2024-06-28 00:06:33,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:33,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:33,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:06:33,188 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:33,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash -207544460, now seen corresponding path program 12 times [2024-06-28 00:06:33,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:33,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100023906] [2024-06-28 00:06:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100023906] [2024-06-28 00:06:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100023906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725160655] [2024-06-28 00:06:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:34,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:34,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 350 transitions, 4151 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:34,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:34,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:34,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:35,480 INFO L124 PetriNetUnfolderBase]: 819/1486 cut-off events. [2024-06-28 00:06:35,480 INFO L125 PetriNetUnfolderBase]: For 258565/258565 co-relation queries the response was YES. [2024-06-28 00:06:35,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12086 conditions, 1486 events. 819/1486 cut-off events. For 258565/258565 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8356 event pairs, 172 based on Foata normal form. 3/1487 useless extension candidates. Maximal degree in co-relation 11915. Up to 1440 conditions per place. [2024-06-28 00:06:35,506 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 332 selfloop transitions, 27 changer transitions 0/361 dead transitions. [2024-06-28 00:06:35,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 361 transitions, 4929 flow [2024-06-28 00:06:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:06:35,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:06:35,507 INFO L175 Difference]: Start difference. First operand has 380 places, 350 transitions, 4151 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:06:35,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 361 transitions, 4929 flow [2024-06-28 00:06:36,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 361 transitions, 4853 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:36,722 INFO L231 Difference]: Finished difference. Result has 385 places, 351 transitions, 4175 flow [2024-06-28 00:06:36,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4175, PETRI_PLACES=385, PETRI_TRANSITIONS=351} [2024-06-28 00:06:36,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:06:36,722 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 351 transitions, 4175 flow [2024-06-28 00:06:36,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:36,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:36,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:36,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:06:36,723 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:36,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:36,724 INFO L85 PathProgramCache]: Analyzing trace with hash -254843674, now seen corresponding path program 21 times [2024-06-28 00:06:36,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:36,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137734713] [2024-06-28 00:06:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:36,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:38,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:38,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137734713] [2024-06-28 00:06:38,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137734713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:38,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:38,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:38,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317789009] [2024-06-28 00:06:38,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:38,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:38,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:38,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:38,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:38,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:38,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 351 transitions, 4175 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:38,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:38,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:38,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:39,524 INFO L124 PetriNetUnfolderBase]: 828/1502 cut-off events. [2024-06-28 00:06:39,524 INFO L125 PetriNetUnfolderBase]: For 263567/263567 co-relation queries the response was YES. [2024-06-28 00:06:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12408 conditions, 1502 events. 828/1502 cut-off events. For 263567/263567 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8480 event pairs, 170 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 12236. Up to 1359 conditions per place. [2024-06-28 00:06:39,543 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 314 selfloop transitions, 53 changer transitions 0/369 dead transitions. [2024-06-28 00:06:39,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 369 transitions, 5308 flow [2024-06-28 00:06:39,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:06:39,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:06:39,545 INFO L175 Difference]: Start difference. First operand has 385 places, 351 transitions, 4175 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:06:39,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 369 transitions, 5308 flow [2024-06-28 00:06:40,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 369 transitions, 5071 flow, removed 37 selfloop flow, removed 12 redundant places. [2024-06-28 00:06:40,395 INFO L231 Difference]: Finished difference. Result has 385 places, 354 transitions, 4187 flow [2024-06-28 00:06:40,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4187, PETRI_PLACES=385, PETRI_TRANSITIONS=354} [2024-06-28 00:06:40,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:06:40,396 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 354 transitions, 4187 flow [2024-06-28 00:06:40,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:40,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:40,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:40,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:06:40,396 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:40,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -248168320, now seen corresponding path program 4 times [2024-06-28 00:06:40,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:40,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004573930] [2024-06-28 00:06:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:40,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:42,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004573930] [2024-06-28 00:06:42,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004573930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:42,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:42,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:06:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973150146] [2024-06-28 00:06:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:06:42,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:42,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:06:42,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:06:42,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:42,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 354 transitions, 4187 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:42,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:42,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:42,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:42,834 INFO L124 PetriNetUnfolderBase]: 832/1510 cut-off events. [2024-06-28 00:06:42,834 INFO L125 PetriNetUnfolderBase]: For 268744/268744 co-relation queries the response was YES. [2024-06-28 00:06:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12492 conditions, 1510 events. 832/1510 cut-off events. For 268744/268744 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8536 event pairs, 169 based on Foata normal form. 2/1510 useless extension candidates. Maximal degree in co-relation 12318. Up to 1455 conditions per place. [2024-06-28 00:06:42,849 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 340 selfloop transitions, 25 changer transitions 0/367 dead transitions. [2024-06-28 00:06:42,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 367 transitions, 4985 flow [2024-06-28 00:06:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:06:42,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:06:42,851 INFO L175 Difference]: Start difference. First operand has 385 places, 354 transitions, 4187 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:06:42,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 367 transitions, 4985 flow [2024-06-28 00:06:43,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 367 transitions, 4851 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:43,799 INFO L231 Difference]: Finished difference. Result has 387 places, 355 transitions, 4141 flow [2024-06-28 00:06:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4141, PETRI_PLACES=387, PETRI_TRANSITIONS=355} [2024-06-28 00:06:43,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:06:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 355 transitions, 4141 flow [2024-06-28 00:06:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:43,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:43,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:06:43,800 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2110252866, now seen corresponding path program 13 times [2024-06-28 00:06:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255123399] [2024-06-28 00:06:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:45,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:45,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255123399] [2024-06-28 00:06:45,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255123399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:45,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:45,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336743025] [2024-06-28 00:06:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:45,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:45,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 355 transitions, 4141 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:45,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:46,333 INFO L124 PetriNetUnfolderBase]: 844/1530 cut-off events. [2024-06-28 00:06:46,333 INFO L125 PetriNetUnfolderBase]: For 273223/273223 co-relation queries the response was YES. [2024-06-28 00:06:46,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12607 conditions, 1530 events. 844/1530 cut-off events. For 273223/273223 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8672 event pairs, 170 based on Foata normal form. 2/1530 useless extension candidates. Maximal degree in co-relation 12432. Up to 1423 conditions per place. [2024-06-28 00:06:46,353 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 330 selfloop transitions, 41 changer transitions 0/373 dead transitions. [2024-06-28 00:06:46,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 373 transitions, 5042 flow [2024-06-28 00:06:46,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:06:46,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 00:06:46,355 INFO L175 Difference]: Start difference. First operand has 387 places, 355 transitions, 4141 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:06:46,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 373 transitions, 5042 flow [2024-06-28 00:06:47,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 373 transitions, 4951 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:47,433 INFO L231 Difference]: Finished difference. Result has 387 places, 360 transitions, 4252 flow [2024-06-28 00:06:47,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4252, PETRI_PLACES=387, PETRI_TRANSITIONS=360} [2024-06-28 00:06:47,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:06:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 360 transitions, 4252 flow [2024-06-28 00:06:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:06:47,434 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:47,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash -254663998, now seen corresponding path program 14 times [2024-06-28 00:06:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659068922] [2024-06-28 00:06:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:49,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659068922] [2024-06-28 00:06:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659068922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:49,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:49,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546468409] [2024-06-28 00:06:49,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:49,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:49,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:49,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:49,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 360 transitions, 4252 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:49,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:49,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:49,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:50,292 INFO L124 PetriNetUnfolderBase]: 850/1540 cut-off events. [2024-06-28 00:06:50,292 INFO L125 PetriNetUnfolderBase]: For 278232/278232 co-relation queries the response was YES. [2024-06-28 00:06:50,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12761 conditions, 1540 events. 850/1540 cut-off events. For 278232/278232 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8732 event pairs, 170 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 12585. Up to 1433 conditions per place. [2024-06-28 00:06:50,317 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 329 selfloop transitions, 44 changer transitions 0/375 dead transitions. [2024-06-28 00:06:50,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 375 transitions, 5129 flow [2024-06-28 00:06:50,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:06:50,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:06:50,319 INFO L175 Difference]: Start difference. First operand has 387 places, 360 transitions, 4252 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:06:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 375 transitions, 5129 flow [2024-06-28 00:06:51,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 375 transitions, 5002 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:51,412 INFO L231 Difference]: Finished difference. Result has 392 places, 362 transitions, 4305 flow [2024-06-28 00:06:51,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4125, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4305, PETRI_PLACES=392, PETRI_TRANSITIONS=362} [2024-06-28 00:06:51,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:06:51,412 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 362 transitions, 4305 flow [2024-06-28 00:06:51,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:51,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:51,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:51,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:06:51,413 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:51,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash -254670694, now seen corresponding path program 22 times [2024-06-28 00:06:51,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:51,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271158867] [2024-06-28 00:06:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:51,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:52,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271158867] [2024-06-28 00:06:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271158867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:52,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:52,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:06:52,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452054684] [2024-06-28 00:06:52,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:52,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:06:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:52,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:06:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:06:53,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:53,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 362 transitions, 4305 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:53,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:53,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:53,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:53,595 INFO L124 PetriNetUnfolderBase]: 854/1548 cut-off events. [2024-06-28 00:06:53,595 INFO L125 PetriNetUnfolderBase]: For 282740/282740 co-relation queries the response was YES. [2024-06-28 00:06:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12825 conditions, 1548 events. 854/1548 cut-off events. For 282740/282740 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8782 event pairs, 172 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 12648. Up to 1499 conditions per place. [2024-06-28 00:06:53,623 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 345 selfloop transitions, 26 changer transitions 0/373 dead transitions. [2024-06-28 00:06:53,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 373 transitions, 5105 flow [2024-06-28 00:06:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:06:53,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:06:53,625 INFO L175 Difference]: Start difference. First operand has 392 places, 362 transitions, 4305 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:06:53,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 373 transitions, 5105 flow [2024-06-28 00:06:54,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 373 transitions, 4955 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:54,720 INFO L231 Difference]: Finished difference. Result has 394 places, 363 transitions, 4249 flow [2024-06-28 00:06:54,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4249, PETRI_PLACES=394, PETRI_TRANSITIONS=363} [2024-06-28 00:06:54,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 00:06:54,721 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 363 transitions, 4249 flow [2024-06-28 00:06:54,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:54,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:54,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:54,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:06:54,721 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:54,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash -886833180, now seen corresponding path program 15 times [2024-06-28 00:06:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:54,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913581291] [2024-06-28 00:06:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:56,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:56,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913581291] [2024-06-28 00:06:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913581291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:56,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:56,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:06:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757515787] [2024-06-28 00:06:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:06:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:06:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:06:56,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:06:56,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 363 transitions, 4249 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:56,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:56,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:06:56,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:57,117 INFO L124 PetriNetUnfolderBase]: 870/1574 cut-off events. [2024-06-28 00:06:57,117 INFO L125 PetriNetUnfolderBase]: For 303226/303226 co-relation queries the response was YES. [2024-06-28 00:06:57,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 1574 events. 870/1574 cut-off events. For 303226/303226 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8982 event pairs, 176 based on Foata normal form. 2/1574 useless extension candidates. Maximal degree in co-relation 13172. Up to 1476 conditions per place. [2024-06-28 00:06:57,139 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 339 selfloop transitions, 42 changer transitions 0/383 dead transitions. [2024-06-28 00:06:57,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 383 transitions, 5516 flow [2024-06-28 00:06:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:06:57,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:06:57,141 INFO L175 Difference]: Start difference. First operand has 394 places, 363 transitions, 4249 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:06:57,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 383 transitions, 5516 flow [2024-06-28 00:06:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 383 transitions, 5434 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:58,572 INFO L231 Difference]: Finished difference. Result has 397 places, 368 transitions, 4483 flow [2024-06-28 00:06:58,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4483, PETRI_PLACES=397, PETRI_TRANSITIONS=368} [2024-06-28 00:06:58,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-28 00:06:58,573 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 368 transitions, 4483 flow [2024-06-28 00:06:58,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:06:58,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:58,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:06:58,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:06:58,573 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:06:58,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash -254848324, now seen corresponding path program 23 times [2024-06-28 00:06:58,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:58,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504537977] [2024-06-28 00:06:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504537977] [2024-06-28 00:07:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504537977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359006623] [2024-06-28 00:07:00,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:00,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:00,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:00,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:00,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 368 transitions, 4483 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:00,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:00,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:00,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:01,560 INFO L124 PetriNetUnfolderBase]: 874/1582 cut-off events. [2024-06-28 00:07:01,561 INFO L125 PetriNetUnfolderBase]: For 308717/308717 co-relation queries the response was YES. [2024-06-28 00:07:01,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13498 conditions, 1582 events. 874/1582 cut-off events. For 308717/308717 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9044 event pairs, 172 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 13318. Up to 1490 conditions per place. [2024-06-28 00:07:01,590 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 343 selfloop transitions, 36 changer transitions 0/381 dead transitions. [2024-06-28 00:07:01,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 381 transitions, 5557 flow [2024-06-28 00:07:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 00:07:01,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 00:07:01,592 INFO L175 Difference]: Start difference. First operand has 397 places, 368 transitions, 4483 flow. Second operand 11 states and 119 transitions. [2024-06-28 00:07:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 381 transitions, 5557 flow [2024-06-28 00:07:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 381 transitions, 5396 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:03,062 INFO L231 Difference]: Finished difference. Result has 400 places, 369 transitions, 4436 flow [2024-06-28 00:07:03,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4436, PETRI_PLACES=400, PETRI_TRANSITIONS=369} [2024-06-28 00:07:03,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 370 predicate places. [2024-06-28 00:07:03,063 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 369 transitions, 4436 flow [2024-06-28 00:07:03,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:03,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:03,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:03,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:07:03,064 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:03,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash -886833366, now seen corresponding path program 24 times [2024-06-28 00:07:03,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:03,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871230944] [2024-06-28 00:07:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871230944] [2024-06-28 00:07:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871230944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:05,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177357043] [2024-06-28 00:07:05,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:05,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:05,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:05,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 369 transitions, 4436 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:05,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:05,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:06,091 INFO L124 PetriNetUnfolderBase]: 880/1600 cut-off events. [2024-06-28 00:07:06,091 INFO L125 PetriNetUnfolderBase]: For 382271/382271 co-relation queries the response was YES. [2024-06-28 00:07:06,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 1600 events. 880/1600 cut-off events. For 382271/382271 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9195 event pairs, 165 based on Foata normal form. 21/1619 useless extension candidates. Maximal degree in co-relation 12225. Up to 1466 conditions per place. [2024-06-28 00:07:06,120 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 350 selfloop transitions, 23 changer transitions 12/387 dead transitions. [2024-06-28 00:07:06,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 387 transitions, 5411 flow [2024-06-28 00:07:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 00:07:06,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 00:07:06,121 INFO L175 Difference]: Start difference. First operand has 400 places, 369 transitions, 4436 flow. Second operand 11 states and 125 transitions. [2024-06-28 00:07:06,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 387 transitions, 5411 flow [2024-06-28 00:07:07,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 387 transitions, 5217 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:07,411 INFO L231 Difference]: Finished difference. Result has 401 places, 365 transitions, 4262 flow [2024-06-28 00:07:07,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4262, PETRI_PLACES=401, PETRI_TRANSITIONS=365} [2024-06-28 00:07:07,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-28 00:07:07,411 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 365 transitions, 4262 flow [2024-06-28 00:07:07,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:07,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:07,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:07:07,412 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:07,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash -886826670, now seen corresponding path program 16 times [2024-06-28 00:07:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840009894] [2024-06-28 00:07:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:09,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840009894] [2024-06-28 00:07:09,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840009894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:09,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460256585] [2024-06-28 00:07:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:09,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:09,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 365 transitions, 4262 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:09,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:09,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:09,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:10,422 INFO L124 PetriNetUnfolderBase]: 851/1537 cut-off events. [2024-06-28 00:07:10,422 INFO L125 PetriNetUnfolderBase]: For 240680/240680 co-relation queries the response was YES. [2024-06-28 00:07:10,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11946 conditions, 1537 events. 851/1537 cut-off events. For 240680/240680 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8833 event pairs, 159 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 11765. Up to 1467 conditions per place. [2024-06-28 00:07:10,450 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 352 selfloop transitions, 29 changer transitions 0/383 dead transitions. [2024-06-28 00:07:10,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 383 transitions, 5209 flow [2024-06-28 00:07:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:07:10,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:07:10,452 INFO L175 Difference]: Start difference. First operand has 401 places, 365 transitions, 4262 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:07:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 383 transitions, 5209 flow [2024-06-28 00:07:11,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 383 transitions, 5007 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-28 00:07:11,599 INFO L231 Difference]: Finished difference. Result has 399 places, 370 transitions, 4264 flow [2024-06-28 00:07:11,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4264, PETRI_PLACES=399, PETRI_TRANSITIONS=370} [2024-06-28 00:07:11,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 00:07:11,600 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 370 transitions, 4264 flow [2024-06-28 00:07:11,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:11,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:11,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:11,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:07:11,600 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:11,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -254843488, now seen corresponding path program 17 times [2024-06-28 00:07:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:11,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806728486] [2024-06-28 00:07:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806728486] [2024-06-28 00:07:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806728486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404131750] [2024-06-28 00:07:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:13,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:13,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 370 transitions, 4264 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:13,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:13,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:14,725 INFO L124 PetriNetUnfolderBase]: 857/1547 cut-off events. [2024-06-28 00:07:14,725 INFO L125 PetriNetUnfolderBase]: For 241142/241142 co-relation queries the response was YES. [2024-06-28 00:07:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11930 conditions, 1547 events. 857/1547 cut-off events. For 241142/241142 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8920 event pairs, 155 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 11750. Up to 1360 conditions per place. [2024-06-28 00:07:14,747 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 319 selfloop transitions, 67 changer transitions 0/388 dead transitions. [2024-06-28 00:07:14,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 388 transitions, 5466 flow [2024-06-28 00:07:14,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:07:14,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:07:14,749 INFO L175 Difference]: Start difference. First operand has 399 places, 370 transitions, 4264 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:07:14,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 388 transitions, 5466 flow [2024-06-28 00:07:15,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 388 transitions, 5354 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:15,860 INFO L231 Difference]: Finished difference. Result has 403 places, 373 transitions, 4412 flow [2024-06-28 00:07:15,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4152, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4412, PETRI_PLACES=403, PETRI_TRANSITIONS=373} [2024-06-28 00:07:15,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 00:07:15,861 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 373 transitions, 4412 flow [2024-06-28 00:07:15,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:15,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:15,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:15,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:07:15,862 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:15,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:15,862 INFO L85 PathProgramCache]: Analyzing trace with hash -254670508, now seen corresponding path program 18 times [2024-06-28 00:07:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:15,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914570553] [2024-06-28 00:07:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:17,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:17,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914570553] [2024-06-28 00:07:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914570553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:17,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:17,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533254300] [2024-06-28 00:07:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:17,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:18,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:18,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 373 transitions, 4412 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:18,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:18,891 INFO L124 PetriNetUnfolderBase]: 863/1557 cut-off events. [2024-06-28 00:07:18,891 INFO L125 PetriNetUnfolderBase]: For 244919/244919 co-relation queries the response was YES. [2024-06-28 00:07:18,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12110 conditions, 1557 events. 863/1557 cut-off events. For 244919/244919 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8959 event pairs, 161 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 11929. Up to 1490 conditions per place. [2024-06-28 00:07:18,920 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 347 selfloop transitions, 37 changer transitions 0/386 dead transitions. [2024-06-28 00:07:18,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 386 transitions, 5330 flow [2024-06-28 00:07:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:07:18,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:07:18,922 INFO L175 Difference]: Start difference. First operand has 403 places, 373 transitions, 4412 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:07:18,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 386 transitions, 5330 flow [2024-06-28 00:07:20,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 386 transitions, 5025 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:20,135 INFO L231 Difference]: Finished difference. Result has 405 places, 376 transitions, 4319 flow [2024-06-28 00:07:20,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4113, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4319, PETRI_PLACES=405, PETRI_TRANSITIONS=376} [2024-06-28 00:07:20,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-28 00:07:20,136 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 376 transitions, 4319 flow [2024-06-28 00:07:20,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:20,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:20,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:20,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:07:20,137 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:20,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -248407888, now seen corresponding path program 19 times [2024-06-28 00:07:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:20,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503769578] [2024-06-28 00:07:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:21,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:21,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503769578] [2024-06-28 00:07:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503769578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:21,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:21,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731610097] [2024-06-28 00:07:21,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:21,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:21,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:21,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:22,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:22,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 376 transitions, 4319 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:22,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:22,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:22,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:22,846 INFO L124 PetriNetUnfolderBase]: 859/1551 cut-off events. [2024-06-28 00:07:22,846 INFO L125 PetriNetUnfolderBase]: For 229955/229955 co-relation queries the response was YES. [2024-06-28 00:07:22,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11591 conditions, 1551 events. 859/1551 cut-off events. For 229955/229955 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8939 event pairs, 159 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 11409. Up to 1440 conditions per place. [2024-06-28 00:07:22,872 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 347 selfloop transitions, 41 changer transitions 0/390 dead transitions. [2024-06-28 00:07:22,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 390 transitions, 5151 flow [2024-06-28 00:07:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:07:22,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:07:22,874 INFO L175 Difference]: Start difference. First operand has 405 places, 376 transitions, 4319 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:07:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 390 transitions, 5151 flow [2024-06-28 00:07:24,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 390 transitions, 4979 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:24,074 INFO L231 Difference]: Finished difference. Result has 407 places, 376 transitions, 4235 flow [2024-06-28 00:07:24,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4235, PETRI_PLACES=407, PETRI_TRANSITIONS=376} [2024-06-28 00:07:24,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:07:24,075 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 376 transitions, 4235 flow [2024-06-28 00:07:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:24,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:24,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:24,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:07:24,076 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:24,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -248414398, now seen corresponding path program 20 times [2024-06-28 00:07:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648771554] [2024-06-28 00:07:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648771554] [2024-06-28 00:07:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648771554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950891107] [2024-06-28 00:07:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:26,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:26,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 376 transitions, 4235 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:26,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:26,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:26,805 INFO L124 PetriNetUnfolderBase]: 855/1545 cut-off events. [2024-06-28 00:07:26,806 INFO L125 PetriNetUnfolderBase]: For 215319/215319 co-relation queries the response was YES. [2024-06-28 00:07:26,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 1545 events. 855/1545 cut-off events. For 215319/215319 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8903 event pairs, 158 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 11014. Up to 1478 conditions per place. [2024-06-28 00:07:26,834 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 350 selfloop transitions, 34 changer transitions 0/386 dead transitions. [2024-06-28 00:07:26,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 386 transitions, 5027 flow [2024-06-28 00:07:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 00:07:26,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 00:07:26,835 INFO L175 Difference]: Start difference. First operand has 407 places, 376 transitions, 4235 flow. Second operand 11 states and 122 transitions. [2024-06-28 00:07:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 386 transitions, 5027 flow [2024-06-28 00:07:27,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 386 transitions, 4845 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:27,894 INFO L231 Difference]: Finished difference. Result has 407 places, 376 transitions, 4127 flow [2024-06-28 00:07:27,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4127, PETRI_PLACES=407, PETRI_TRANSITIONS=376} [2024-06-28 00:07:27,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:07:27,895 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 376 transitions, 4127 flow [2024-06-28 00:07:27,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:27,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:27,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:27,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:07:27,896 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:27,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash -886587102, now seen corresponding path program 5 times [2024-06-28 00:07:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:27,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839153046] [2024-06-28 00:07:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:27,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:29,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839153046] [2024-06-28 00:07:29,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839153046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:29,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:29,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:29,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080721224] [2024-06-28 00:07:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:29,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:29,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:29,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:29,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:29,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 376 transitions, 4127 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:29,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:29,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:29,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:30,437 INFO L124 PetriNetUnfolderBase]: 859/1553 cut-off events. [2024-06-28 00:07:30,437 INFO L125 PetriNetUnfolderBase]: For 217601/217601 co-relation queries the response was YES. [2024-06-28 00:07:30,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11150 conditions, 1553 events. 859/1553 cut-off events. For 217601/217601 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8992 event pairs, 157 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10967. Up to 1510 conditions per place. [2024-06-28 00:07:30,459 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 365 selfloop transitions, 21 changer transitions 0/388 dead transitions. [2024-06-28 00:07:30,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 388 transitions, 4962 flow [2024-06-28 00:07:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 00:07:30,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 00:07:30,461 INFO L175 Difference]: Start difference. First operand has 407 places, 376 transitions, 4127 flow. Second operand 11 states and 116 transitions. [2024-06-28 00:07:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 388 transitions, 4962 flow [2024-06-28 00:07:31,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 388 transitions, 4724 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-28 00:07:31,262 INFO L231 Difference]: Finished difference. Result has 407 places, 377 transitions, 3971 flow [2024-06-28 00:07:31,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3971, PETRI_PLACES=407, PETRI_TRANSITIONS=377} [2024-06-28 00:07:31,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:07:31,263 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 377 transitions, 3971 flow [2024-06-28 00:07:31,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:31,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:31,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:31,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:07:31,264 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:31,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2110015530, now seen corresponding path program 25 times [2024-06-28 00:07:31,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:31,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251358464] [2024-06-28 00:07:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:31,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251358464] [2024-06-28 00:07:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251358464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258711250] [2024-06-28 00:07:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:33,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:33,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:33,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:33,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 377 transitions, 3971 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:33,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:33,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:33,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:33,781 INFO L124 PetriNetUnfolderBase]: 856/1548 cut-off events. [2024-06-28 00:07:33,782 INFO L125 PetriNetUnfolderBase]: For 201688/201688 co-relation queries the response was YES. [2024-06-28 00:07:33,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10669 conditions, 1548 events. 856/1548 cut-off events. For 201688/201688 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8950 event pairs, 159 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 10486. Up to 1499 conditions per place. [2024-06-28 00:07:33,810 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 360 selfloop transitions, 25 changer transitions 0/387 dead transitions. [2024-06-28 00:07:33,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 387 transitions, 4763 flow [2024-06-28 00:07:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:07:33,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:07:33,812 INFO L175 Difference]: Start difference. First operand has 407 places, 377 transitions, 3971 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:07:33,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 387 transitions, 4763 flow [2024-06-28 00:07:34,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 387 transitions, 4640 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:34,782 INFO L231 Difference]: Finished difference. Result has 408 places, 377 transitions, 3902 flow [2024-06-28 00:07:34,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3902, PETRI_PLACES=408, PETRI_TRANSITIONS=377} [2024-06-28 00:07:34,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-28 00:07:34,783 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 377 transitions, 3902 flow [2024-06-28 00:07:34,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:34,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:34,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:34,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:07:34,784 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:34,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:34,784 INFO L85 PathProgramCache]: Analyzing trace with hash -591011712, now seen corresponding path program 6 times [2024-06-28 00:07:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:34,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927111248] [2024-06-28 00:07:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927111248] [2024-06-28 00:07:36,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927111248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:36,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629609274] [2024-06-28 00:07:36,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:36,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:36,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:36,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:36,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:36,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 377 transitions, 3902 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:36,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:36,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:36,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:37,113 INFO L124 PetriNetUnfolderBase]: 860/1556 cut-off events. [2024-06-28 00:07:37,114 INFO L125 PetriNetUnfolderBase]: For 204020/204020 co-relation queries the response was YES. [2024-06-28 00:07:37,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10628 conditions, 1556 events. 860/1556 cut-off events. For 204020/204020 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 8998 event pairs, 156 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 10445. Up to 1517 conditions per place. [2024-06-28 00:07:37,142 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 370 selfloop transitions, 17 changer transitions 0/389 dead transitions. [2024-06-28 00:07:37,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 389 transitions, 4736 flow [2024-06-28 00:07:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:07:37,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 00:07:37,143 INFO L175 Difference]: Start difference. First operand has 408 places, 377 transitions, 3902 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:07:37,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 389 transitions, 4736 flow [2024-06-28 00:07:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 389 transitions, 4666 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:07:38,234 INFO L231 Difference]: Finished difference. Result has 407 places, 378 transitions, 3908 flow [2024-06-28 00:07:38,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3832, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3908, PETRI_PLACES=407, PETRI_TRANSITIONS=378} [2024-06-28 00:07:38,249 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 00:07:38,249 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 378 transitions, 3908 flow [2024-06-28 00:07:38,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:38,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:38,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:07:38,250 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:38,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1767062212, now seen corresponding path program 7 times [2024-06-28 00:07:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197147491] [2024-06-28 00:07:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:40,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:40,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197147491] [2024-06-28 00:07:40,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197147491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:40,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:40,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627992364] [2024-06-28 00:07:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:40,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:40,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 378 transitions, 3908 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:40,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:40,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:40,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:40,770 INFO L124 PetriNetUnfolderBase]: 864/1564 cut-off events. [2024-06-28 00:07:40,771 INFO L125 PetriNetUnfolderBase]: For 207818/207818 co-relation queries the response was YES. [2024-06-28 00:07:40,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10709 conditions, 1564 events. 864/1564 cut-off events. For 207818/207818 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9094 event pairs, 160 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 10525. Up to 1518 conditions per place. [2024-06-28 00:07:40,793 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 365 selfloop transitions, 22 changer transitions 0/389 dead transitions. [2024-06-28 00:07:40,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 389 transitions, 4742 flow [2024-06-28 00:07:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:40,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 00:07:40,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 00:07:40,795 INFO L175 Difference]: Start difference. First operand has 407 places, 378 transitions, 3908 flow. Second operand 11 states and 114 transitions. [2024-06-28 00:07:40,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 389 transitions, 4742 flow [2024-06-28 00:07:41,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 389 transitions, 4676 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:41,633 INFO L231 Difference]: Finished difference. Result has 409 places, 379 transitions, 3932 flow [2024-06-28 00:07:41,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3842, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3932, PETRI_PLACES=409, PETRI_TRANSITIONS=379} [2024-06-28 00:07:41,634 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:07:41,634 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 379 transitions, 3932 flow [2024-06-28 00:07:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:41,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:41,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:07:41,635 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:41,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash -897099134, now seen corresponding path program 21 times [2024-06-28 00:07:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:41,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496590601] [2024-06-28 00:07:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:41,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496590601] [2024-06-28 00:07:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496590601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950460214] [2024-06-28 00:07:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:43,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:43,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:07:43,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 379 transitions, 3932 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:43,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:43,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:07:43,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:44,528 INFO L124 PetriNetUnfolderBase]: 860/1558 cut-off events. [2024-06-28 00:07:44,528 INFO L125 PetriNetUnfolderBase]: For 191509/191509 co-relation queries the response was YES. [2024-06-28 00:07:44,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 1558 events. 860/1558 cut-off events. For 191509/191509 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9047 event pairs, 159 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 10152. Up to 1488 conditions per place. [2024-06-28 00:07:44,557 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 362 selfloop transitions, 27 changer transitions 0/391 dead transitions. [2024-06-28 00:07:44,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 391 transitions, 4752 flow [2024-06-28 00:07:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:07:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:07:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 00:07:44,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:07:44,559 INFO L175 Difference]: Start difference. First operand has 409 places, 379 transitions, 3932 flow. Second operand 11 states and 121 transitions. [2024-06-28 00:07:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 391 transitions, 4752 flow [2024-06-28 00:07:45,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 391 transitions, 4616 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:45,532 INFO L231 Difference]: Finished difference. Result has 411 places, 379 transitions, 3856 flow [2024-06-28 00:07:45,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3856, PETRI_PLACES=411, PETRI_TRANSITIONS=379} [2024-06-28 00:07:45,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:07:45,532 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 379 transitions, 3856 flow [2024-06-28 00:07:45,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:45,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:45,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:45,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:07:45,533 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:45,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:45,533 INFO L85 PathProgramCache]: Analyzing trace with hash -845228206, now seen corresponding path program 26 times [2024-06-28 00:07:45,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:45,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531487502] [2024-06-28 00:07:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:45,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531487502] [2024-06-28 00:07:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531487502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:47,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:47,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081625513] [2024-06-28 00:07:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:47,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:47,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:07:47,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 379 transitions, 3856 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:47,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:47,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:07:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:47,617 INFO L124 PetriNetUnfolderBase]: 864/1566 cut-off events. [2024-06-28 00:07:47,617 INFO L125 PetriNetUnfolderBase]: For 189862/189862 co-relation queries the response was YES. [2024-06-28 00:07:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10232 conditions, 1566 events. 864/1566 cut-off events. For 189862/189862 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 9096 event pairs, 68 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 10046. Up to 799 conditions per place. [2024-06-28 00:07:47,638 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 251 selfloop transitions, 146 changer transitions 0/399 dead transitions. [2024-06-28 00:07:47,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 399 transitions, 4982 flow [2024-06-28 00:07:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:07:47,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:07:47,639 INFO L175 Difference]: Start difference. First operand has 411 places, 379 transitions, 3856 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:07:47,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 399 transitions, 4982 flow [2024-06-28 00:07:48,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 399 transitions, 4802 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 00:07:48,361 INFO L231 Difference]: Finished difference. Result has 408 places, 380 transitions, 3984 flow [2024-06-28 00:07:48,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3984, PETRI_PLACES=408, PETRI_TRANSITIONS=380} [2024-06-28 00:07:48,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-28 00:07:48,362 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 380 transitions, 3984 flow [2024-06-28 00:07:48,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:48,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:48,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:48,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:07:48,362 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:48,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -787015786, now seen corresponding path program 27 times [2024-06-28 00:07:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:48,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481873965] [2024-06-28 00:07:48,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:48,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:49,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:49,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481873965] [2024-06-28 00:07:49,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481873965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:49,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:49,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286244222] [2024-06-28 00:07:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:49,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:49,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:07:49,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 380 transitions, 3984 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:49,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:49,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:07:49,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:50,572 INFO L124 PetriNetUnfolderBase]: 868/1574 cut-off events. [2024-06-28 00:07:50,573 INFO L125 PetriNetUnfolderBase]: For 192564/192564 co-relation queries the response was YES. [2024-06-28 00:07:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10461 conditions, 1574 events. 868/1574 cut-off events. For 192564/192564 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9185 event pairs, 94 based on Foata normal form. 2/1574 useless extension candidates. Maximal degree in co-relation 10275. Up to 1260 conditions per place. [2024-06-28 00:07:50,589 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 273 selfloop transitions, 121 changer transitions 0/396 dead transitions. [2024-06-28 00:07:50,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 396 transitions, 4824 flow [2024-06-28 00:07:50,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:07:50,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:07:50,590 INFO L175 Difference]: Start difference. First operand has 408 places, 380 transitions, 3984 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:07:50,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 396 transitions, 4824 flow [2024-06-28 00:07:51,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 396 transitions, 4583 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:07:51,359 INFO L231 Difference]: Finished difference. Result has 410 places, 381 transitions, 4005 flow [2024-06-28 00:07:51,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4005, PETRI_PLACES=410, PETRI_TRANSITIONS=381} [2024-06-28 00:07:51,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 00:07:51,359 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 381 transitions, 4005 flow [2024-06-28 00:07:51,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:51,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:51,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:51,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 00:07:51,360 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash -787020436, now seen corresponding path program 28 times [2024-06-28 00:07:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:51,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425796172] [2024-06-28 00:07:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:52,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:52,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:52,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425796172] [2024-06-28 00:07:52,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425796172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:52,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:52,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:52,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471353962] [2024-06-28 00:07:52,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:52,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:52,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:52,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:52,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:52,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:07:52,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 381 transitions, 4005 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:52,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:52,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:07:52,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:53,359 INFO L124 PetriNetUnfolderBase]: 872/1582 cut-off events. [2024-06-28 00:07:53,360 INFO L125 PetriNetUnfolderBase]: For 192590/192590 co-relation queries the response was YES. [2024-06-28 00:07:53,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10437 conditions, 1582 events. 872/1582 cut-off events. For 192590/192590 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9261 event pairs, 92 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 10251. Up to 1240 conditions per place. [2024-06-28 00:07:53,381 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 273 selfloop transitions, 123 changer transitions 0/398 dead transitions. [2024-06-28 00:07:53,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 398 transitions, 4846 flow [2024-06-28 00:07:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:07:53,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 00:07:53,382 INFO L175 Difference]: Start difference. First operand has 410 places, 381 transitions, 4005 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:07:53,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 398 transitions, 4846 flow [2024-06-28 00:07:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 398 transitions, 4562 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:07:54,156 INFO L231 Difference]: Finished difference. Result has 410 places, 382 transitions, 3982 flow [2024-06-28 00:07:54,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3982, PETRI_PLACES=410, PETRI_TRANSITIONS=382} [2024-06-28 00:07:54,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 00:07:54,157 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 382 transitions, 3982 flow [2024-06-28 00:07:54,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:54,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:54,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:54,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 00:07:54,157 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:54,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash -787135756, now seen corresponding path program 29 times [2024-06-28 00:07:54,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:54,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691896247] [2024-06-28 00:07:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:55,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691896247] [2024-06-28 00:07:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691896247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:55,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:07:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514000429] [2024-06-28 00:07:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:07:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:07:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:07:55,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:07:55,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 382 transitions, 3982 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:55,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:55,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:07:55,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:56,278 INFO L124 PetriNetUnfolderBase]: 876/1590 cut-off events. [2024-06-28 00:07:56,278 INFO L125 PetriNetUnfolderBase]: For 192796/192796 co-relation queries the response was YES. [2024-06-28 00:07:56,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10395 conditions, 1590 events. 876/1590 cut-off events. For 192796/192796 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 9327 event pairs, 88 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 10210. Up to 1204 conditions per place. [2024-06-28 00:07:56,300 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 273 selfloop transitions, 125 changer transitions 0/400 dead transitions. [2024-06-28 00:07:56,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 400 transitions, 4831 flow [2024-06-28 00:07:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:07:56,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 00:07:56,301 INFO L175 Difference]: Start difference. First operand has 410 places, 382 transitions, 3982 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:07:56,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 400 transitions, 4831 flow [2024-06-28 00:07:57,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 400 transitions, 4583 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:07:57,025 INFO L231 Difference]: Finished difference. Result has 411 places, 383 transitions, 4001 flow [2024-06-28 00:07:57,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4001, PETRI_PLACES=411, PETRI_TRANSITIONS=383} [2024-06-28 00:07:57,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:07:57,026 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 383 transitions, 4001 flow [2024-06-28 00:07:57,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:57,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:57,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:07:57,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 00:07:57,027 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:07:57,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:57,027 INFO L85 PathProgramCache]: Analyzing trace with hash -787015600, now seen corresponding path program 22 times [2024-06-28 00:07:57,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:57,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016917871] [2024-06-28 00:07:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:07:58,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016917871] [2024-06-28 00:07:58,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016917871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:58,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:58,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:07:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815052944] [2024-06-28 00:07:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:58,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:07:58,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:07:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:07:59,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:07:59,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 383 transitions, 4001 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:07:59,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:59,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:07:59,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:59,687 INFO L124 PetriNetUnfolderBase]: 882/1600 cut-off events. [2024-06-28 00:07:59,688 INFO L125 PetriNetUnfolderBase]: For 193016/193016 co-relation queries the response was YES. [2024-06-28 00:07:59,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10495 conditions, 1600 events. 882/1600 cut-off events. For 193016/193016 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 9394 event pairs, 107 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 10310. Up to 950 conditions per place. [2024-06-28 00:07:59,718 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 192 changer transitions 0/404 dead transitions. [2024-06-28 00:07:59,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 404 transitions, 5213 flow [2024-06-28 00:07:59,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:07:59,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:07:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:07:59,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483870967741935 [2024-06-28 00:07:59,720 INFO L175 Difference]: Start difference. First operand has 411 places, 383 transitions, 4001 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:07:59,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 404 transitions, 5213 flow [2024-06-28 00:08:00,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 404 transitions, 4957 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:00,520 INFO L231 Difference]: Finished difference. Result has 412 places, 387 transitions, 4219 flow [2024-06-28 00:08:00,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4219, PETRI_PLACES=412, PETRI_TRANSITIONS=387} [2024-06-28 00:08:00,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 00:08:00,521 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 387 transitions, 4219 flow [2024-06-28 00:08:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:00,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:00,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:00,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 00:08:00,521 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:00,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash 68995036, now seen corresponding path program 23 times [2024-06-28 00:08:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:00,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450927882] [2024-06-28 00:08:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450927882] [2024-06-28 00:08:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450927882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:02,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:02,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135055865] [2024-06-28 00:08:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:02,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:02,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:02,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 387 transitions, 4219 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:02,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:02,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:02,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:03,083 INFO L124 PetriNetUnfolderBase]: 888/1610 cut-off events. [2024-06-28 00:08:03,083 INFO L125 PetriNetUnfolderBase]: For 193425/193425 co-relation queries the response was YES. [2024-06-28 00:08:03,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10732 conditions, 1610 events. 888/1610 cut-off events. For 193425/193425 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 9472 event pairs, 97 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 10547. Up to 1301 conditions per place. [2024-06-28 00:08:03,105 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 302 selfloop transitions, 98 changer transitions 0/402 dead transitions. [2024-06-28 00:08:03,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 402 transitions, 5102 flow [2024-06-28 00:08:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:08:03,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:08:03,106 INFO L175 Difference]: Start difference. First operand has 412 places, 387 transitions, 4219 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:08:03,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 402 transitions, 5102 flow [2024-06-28 00:08:04,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 402 transitions, 4947 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:04,009 INFO L231 Difference]: Finished difference. Result has 415 places, 389 transitions, 4312 flow [2024-06-28 00:08:04,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4312, PETRI_PLACES=415, PETRI_TRANSITIONS=389} [2024-06-28 00:08:04,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:08:04,009 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 389 transitions, 4312 flow [2024-06-28 00:08:04,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:04,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:04,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:04,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 00:08:04,010 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:04,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:04,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1905072140, now seen corresponding path program 24 times [2024-06-28 00:08:04,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:04,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436579399] [2024-06-28 00:08:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:04,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:05,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:05,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436579399] [2024-06-28 00:08:05,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436579399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:05,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:05,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:05,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359298693] [2024-06-28 00:08:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:05,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:05,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:05,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:05,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:05,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 389 transitions, 4312 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:05,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:05,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:05,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:06,118 INFO L124 PetriNetUnfolderBase]: 894/1620 cut-off events. [2024-06-28 00:08:06,119 INFO L125 PetriNetUnfolderBase]: For 193535/193535 co-relation queries the response was YES. [2024-06-28 00:08:06,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10943 conditions, 1620 events. 894/1620 cut-off events. For 193535/193535 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 9524 event pairs, 98 based on Foata normal form. 2/1620 useless extension candidates. Maximal degree in co-relation 10757. Up to 1284 conditions per place. [2024-06-28 00:08:06,144 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 109 changer transitions 0/406 dead transitions. [2024-06-28 00:08:06,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 406 transitions, 5216 flow [2024-06-28 00:08:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:08:06,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 00:08:06,145 INFO L175 Difference]: Start difference. First operand has 415 places, 389 transitions, 4312 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:08:06,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 406 transitions, 5216 flow [2024-06-28 00:08:07,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 406 transitions, 4996 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:08:07,014 INFO L231 Difference]: Finished difference. Result has 417 places, 391 transitions, 4365 flow [2024-06-28 00:08:07,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4365, PETRI_PLACES=417, PETRI_TRANSITIONS=391} [2024-06-28 00:08:07,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 00:08:07,015 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 391 transitions, 4365 flow [2024-06-28 00:08:07,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:07,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:07,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:07,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 00:08:07,015 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:07,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:07,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1905071954, now seen corresponding path program 30 times [2024-06-28 00:08:07,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:07,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469714265] [2024-06-28 00:08:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:07,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:08,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:08,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469714265] [2024-06-28 00:08:08,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469714265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:08,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:08,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921800572] [2024-06-28 00:08:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:08,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:08,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:08,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 391 transitions, 4365 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:08,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:08,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:08,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:09,245 INFO L124 PetriNetUnfolderBase]: 898/1628 cut-off events. [2024-06-28 00:08:09,245 INFO L125 PetriNetUnfolderBase]: For 196212/196212 co-relation queries the response was YES. [2024-06-28 00:08:09,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10997 conditions, 1628 events. 898/1628 cut-off events. For 196212/196212 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 9563 event pairs, 90 based on Foata normal form. 2/1628 useless extension candidates. Maximal degree in co-relation 10810. Up to 1454 conditions per place. [2024-06-28 00:08:09,267 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 335 selfloop transitions, 67 changer transitions 0/404 dead transitions. [2024-06-28 00:08:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 404 transitions, 5208 flow [2024-06-28 00:08:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:08:09,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:08:09,269 INFO L175 Difference]: Start difference. First operand has 417 places, 391 transitions, 4365 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:08:09,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 404 transitions, 5208 flow [2024-06-28 00:08:10,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 404 transitions, 4963 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:10,160 INFO L231 Difference]: Finished difference. Result has 418 places, 392 transitions, 4273 flow [2024-06-28 00:08:10,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4273, PETRI_PLACES=418, PETRI_TRANSITIONS=392} [2024-06-28 00:08:10,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-28 00:08:10,161 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 392 transitions, 4273 flow [2024-06-28 00:08:10,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:10,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:10,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 00:08:10,161 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:10,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1904894324, now seen corresponding path program 31 times [2024-06-28 00:08:10,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785478769] [2024-06-28 00:08:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:11,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:11,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785478769] [2024-06-28 00:08:11,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785478769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:11,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:11,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:11,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149204816] [2024-06-28 00:08:11,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:11,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:11,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:11,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 392 transitions, 4273 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:11,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:11,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:12,531 INFO L124 PetriNetUnfolderBase]: 909/1649 cut-off events. [2024-06-28 00:08:12,531 INFO L125 PetriNetUnfolderBase]: For 215139/215139 co-relation queries the response was YES. [2024-06-28 00:08:12,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11251 conditions, 1649 events. 909/1649 cut-off events. For 215139/215139 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9737 event pairs, 91 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 11064. Up to 1420 conditions per place. [2024-06-28 00:08:12,552 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 329 selfloop transitions, 77 changer transitions 0/408 dead transitions. [2024-06-28 00:08:12,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 408 transitions, 5421 flow [2024-06-28 00:08:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:12,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:08:12,554 INFO L175 Difference]: Start difference. First operand has 418 places, 392 transitions, 4273 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 408 transitions, 5421 flow [2024-06-28 00:08:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 408 transitions, 5279 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:13,534 INFO L231 Difference]: Finished difference. Result has 419 places, 394 transitions, 4321 flow [2024-06-28 00:08:13,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4321, PETRI_PLACES=419, PETRI_TRANSITIONS=394} [2024-06-28 00:08:13,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-28 00:08:13,535 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 394 transitions, 4321 flow [2024-06-28 00:08:13,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:13,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:13,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:13,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 00:08:13,535 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:13,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1904898974, now seen corresponding path program 32 times [2024-06-28 00:08:13,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:13,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723965320] [2024-06-28 00:08:13,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723965320] [2024-06-28 00:08:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723965320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:15,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:15,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719731969] [2024-06-28 00:08:15,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:15,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:15,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:15,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:15,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 394 transitions, 4321 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:15,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:15,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:15,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:15,784 INFO L124 PetriNetUnfolderBase]: 906/1644 cut-off events. [2024-06-28 00:08:15,784 INFO L125 PetriNetUnfolderBase]: For 196037/196037 co-relation queries the response was YES. [2024-06-28 00:08:15,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10983 conditions, 1644 events. 906/1644 cut-off events. For 196037/196037 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 9716 event pairs, 94 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 10796. Up to 1458 conditions per place. [2024-06-28 00:08:15,815 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 332 selfloop transitions, 72 changer transitions 0/406 dead transitions. [2024-06-28 00:08:15,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 406 transitions, 5157 flow [2024-06-28 00:08:15,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:08:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:08:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-28 00:08:15,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-28 00:08:15,817 INFO L175 Difference]: Start difference. First operand has 419 places, 394 transitions, 4321 flow. Second operand 9 states and 122 transitions. [2024-06-28 00:08:15,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 406 transitions, 5157 flow [2024-06-28 00:08:17,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 406 transitions, 5047 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:17,013 INFO L231 Difference]: Finished difference. Result has 421 places, 394 transitions, 4361 flow [2024-06-28 00:08:17,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4211, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4361, PETRI_PLACES=421, PETRI_TRANSITIONS=394} [2024-06-28 00:08:17,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-28 00:08:17,014 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 394 transitions, 4361 flow [2024-06-28 00:08:17,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:17,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:17,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:17,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 00:08:17,014 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:17,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:17,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1904899160, now seen corresponding path program 25 times [2024-06-28 00:08:17,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:17,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307714680] [2024-06-28 00:08:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307714680] [2024-06-28 00:08:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307714680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:18,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:18,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442649064] [2024-06-28 00:08:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:19,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:19,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 394 transitions, 4361 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:19,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:19,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:19,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:19,799 INFO L124 PetriNetUnfolderBase]: 912/1654 cut-off events. [2024-06-28 00:08:19,799 INFO L125 PetriNetUnfolderBase]: For 196208/196208 co-relation queries the response was YES. [2024-06-28 00:08:19,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 1654 events. 912/1654 cut-off events. For 196208/196208 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 9782 event pairs, 102 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 10973. Up to 1294 conditions per place. [2024-06-28 00:08:19,831 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 118 changer transitions 0/411 dead transitions. [2024-06-28 00:08:19,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 411 transitions, 5279 flow [2024-06-28 00:08:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 00:08:19,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 00:08:19,833 INFO L175 Difference]: Start difference. First operand has 421 places, 394 transitions, 4361 flow. Second operand 10 states and 138 transitions. [2024-06-28 00:08:19,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 411 transitions, 5279 flow [2024-06-28 00:08:20,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 411 transitions, 5121 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:20,895 INFO L231 Difference]: Finished difference. Result has 422 places, 396 transitions, 4498 flow [2024-06-28 00:08:20,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4498, PETRI_PLACES=422, PETRI_TRANSITIONS=396} [2024-06-28 00:08:20,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 392 predicate places. [2024-06-28 00:08:20,896 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 396 transitions, 4498 flow [2024-06-28 00:08:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:20,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:20,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 00:08:20,897 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:20,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1900310354, now seen corresponding path program 33 times [2024-06-28 00:08:20,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258019685] [2024-06-28 00:08:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:20,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:22,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258019685] [2024-06-28 00:08:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258019685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:22,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6504634] [2024-06-28 00:08:22,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:22,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:22,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:22,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 396 transitions, 4498 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:22,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:22,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:22,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:23,196 INFO L124 PetriNetUnfolderBase]: 923/1675 cut-off events. [2024-06-28 00:08:23,196 INFO L125 PetriNetUnfolderBase]: For 215683/215683 co-relation queries the response was YES. [2024-06-28 00:08:23,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 1675 events. 923/1675 cut-off events. For 215683/215683 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 9924 event pairs, 91 based on Foata normal form. 2/1675 useless extension candidates. Maximal degree in co-relation 11452. Up to 1348 conditions per place. [2024-06-28 00:08:23,220 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 321 selfloop transitions, 90 changer transitions 0/413 dead transitions. [2024-06-28 00:08:23,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 413 transitions, 5662 flow [2024-06-28 00:08:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:23,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:08:23,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 00:08:23,222 INFO L175 Difference]: Start difference. First operand has 422 places, 396 transitions, 4498 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:08:23,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 413 transitions, 5662 flow [2024-06-28 00:08:24,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 413 transitions, 5393 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:24,206 INFO L231 Difference]: Finished difference. Result has 423 places, 398 transitions, 4449 flow [2024-06-28 00:08:24,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4449, PETRI_PLACES=423, PETRI_TRANSITIONS=398} [2024-06-28 00:08:24,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-28 00:08:24,220 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 398 transitions, 4449 flow [2024-06-28 00:08:24,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:24,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:24,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 00:08:24,221 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:24,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1900425674, now seen corresponding path program 34 times [2024-06-28 00:08:24,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:24,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448855548] [2024-06-28 00:08:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:24,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448855548] [2024-06-28 00:08:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448855548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:26,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340051508] [2024-06-28 00:08:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:26,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:26,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 398 transitions, 4449 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:26,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:26,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:26,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:27,020 INFO L124 PetriNetUnfolderBase]: 927/1683 cut-off events. [2024-06-28 00:08:27,021 INFO L125 PetriNetUnfolderBase]: For 215680/215680 co-relation queries the response was YES. [2024-06-28 00:08:27,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 1683 events. 927/1683 cut-off events. For 215680/215680 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10016 event pairs, 102 based on Foata normal form. 2/1683 useless extension candidates. Maximal degree in co-relation 11424. Up to 1295 conditions per place. [2024-06-28 00:08:27,043 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 295 selfloop transitions, 118 changer transitions 0/415 dead transitions. [2024-06-28 00:08:27,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 415 transitions, 5617 flow [2024-06-28 00:08:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:27,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:27,044 INFO L175 Difference]: Start difference. First operand has 423 places, 398 transitions, 4449 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:27,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 415 transitions, 5617 flow [2024-06-28 00:08:27,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 415 transitions, 5497 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:27,913 INFO L231 Difference]: Finished difference. Result has 426 places, 399 transitions, 4590 flow [2024-06-28 00:08:27,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4590, PETRI_PLACES=426, PETRI_TRANSITIONS=399} [2024-06-28 00:08:27,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:08:27,914 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 399 transitions, 4590 flow [2024-06-28 00:08:27,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:27,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:27,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:27,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 00:08:27,915 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:27,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:27,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1900430510, now seen corresponding path program 26 times [2024-06-28 00:08:27,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:27,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294650871] [2024-06-28 00:08:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:27,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:29,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294650871] [2024-06-28 00:08:29,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294650871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:29,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:29,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356154354] [2024-06-28 00:08:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:29,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:29,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:29,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:29,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:29,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 399 transitions, 4590 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:29,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:29,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:29,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:30,201 INFO L124 PetriNetUnfolderBase]: 933/1693 cut-off events. [2024-06-28 00:08:30,201 INFO L125 PetriNetUnfolderBase]: For 216259/216259 co-relation queries the response was YES. [2024-06-28 00:08:30,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11894 conditions, 1693 events. 933/1693 cut-off events. For 216259/216259 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10084 event pairs, 107 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 11705. Up to 1303 conditions per place. [2024-06-28 00:08:30,224 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 284 selfloop transitions, 129 changer transitions 0/415 dead transitions. [2024-06-28 00:08:30,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 415 transitions, 5515 flow [2024-06-28 00:08:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:08:30,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483870967741935 [2024-06-28 00:08:30,225 INFO L175 Difference]: Start difference. First operand has 426 places, 399 transitions, 4590 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:08:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 415 transitions, 5515 flow [2024-06-28 00:08:31,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 415 transitions, 5205 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:31,070 INFO L231 Difference]: Finished difference. Result has 426 places, 401 transitions, 4601 flow [2024-06-28 00:08:31,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4280, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4601, PETRI_PLACES=426, PETRI_TRANSITIONS=401} [2024-06-28 00:08:31,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:08:31,070 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 401 transitions, 4601 flow [2024-06-28 00:08:31,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:31,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:31,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:31,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 00:08:31,071 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:31,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1649834474, now seen corresponding path program 35 times [2024-06-28 00:08:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:31,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971887907] [2024-06-28 00:08:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:32,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:32,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971887907] [2024-06-28 00:08:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971887907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:32,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713068599] [2024-06-28 00:08:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:32,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:32,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:32,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 401 transitions, 4601 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:32,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:32,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:32,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:33,469 INFO L124 PetriNetUnfolderBase]: 930/1688 cut-off events. [2024-06-28 00:08:33,469 INFO L125 PetriNetUnfolderBase]: For 196852/196852 co-relation queries the response was YES. [2024-06-28 00:08:33,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 1688 events. 930/1688 cut-off events. For 196852/196852 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10031 event pairs, 105 based on Foata normal form. 2/1688 useless extension candidates. Maximal degree in co-relation 11289. Up to 1331 conditions per place. [2024-06-28 00:08:33,493 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 297 selfloop transitions, 116 changer transitions 0/415 dead transitions. [2024-06-28 00:08:33,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 415 transitions, 5470 flow [2024-06-28 00:08:33,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 00:08:33,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 00:08:33,494 INFO L175 Difference]: Start difference. First operand has 426 places, 401 transitions, 4601 flow. Second operand 10 states and 137 transitions. [2024-06-28 00:08:33,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 415 transitions, 5470 flow [2024-06-28 00:08:34,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 415 transitions, 5165 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:34,336 INFO L231 Difference]: Finished difference. Result has 426 places, 401 transitions, 4534 flow [2024-06-28 00:08:34,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4534, PETRI_PLACES=426, PETRI_TRANSITIONS=401} [2024-06-28 00:08:34,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:08:34,337 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 401 transitions, 4534 flow [2024-06-28 00:08:34,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:34,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:34,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 00:08:34,337 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:34,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash -850668932, now seen corresponding path program 36 times [2024-06-28 00:08:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:34,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8903467] [2024-06-28 00:08:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:35,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:35,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8903467] [2024-06-28 00:08:35,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8903467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:35,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077827115] [2024-06-28 00:08:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:35,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:36,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:36,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 401 transitions, 4534 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:36,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:36,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:36,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:36,592 INFO L124 PetriNetUnfolderBase]: 934/1697 cut-off events. [2024-06-28 00:08:36,593 INFO L125 PetriNetUnfolderBase]: For 193505/193505 co-relation queries the response was YES. [2024-06-28 00:08:36,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11405 conditions, 1697 events. 934/1697 cut-off events. For 193505/193505 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10108 event pairs, 65 based on Foata normal form. 2/1697 useless extension candidates. Maximal degree in co-relation 11218. Up to 1211 conditions per place. [2024-06-28 00:08:36,617 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 291 selfloop transitions, 130 changer transitions 0/423 dead transitions. [2024-06-28 00:08:36,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 423 transitions, 5730 flow [2024-06-28 00:08:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:36,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:36,618 INFO L175 Difference]: Start difference. First operand has 426 places, 401 transitions, 4534 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:36,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 423 transitions, 5730 flow [2024-06-28 00:08:37,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 423 transitions, 5488 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:37,486 INFO L231 Difference]: Finished difference. Result has 426 places, 402 transitions, 4575 flow [2024-06-28 00:08:37,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4294, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4575, PETRI_PLACES=426, PETRI_TRANSITIONS=402} [2024-06-28 00:08:37,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:08:37,487 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 402 transitions, 4575 flow [2024-06-28 00:08:37,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:37,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:37,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 00:08:37,488 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:37,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1729637854, now seen corresponding path program 37 times [2024-06-28 00:08:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:37,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465301229] [2024-06-28 00:08:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465301229] [2024-06-28 00:08:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465301229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207557880] [2024-06-28 00:08:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:39,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:39,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 402 transitions, 4575 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:39,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:39,681 INFO L124 PetriNetUnfolderBase]: 945/1718 cut-off events. [2024-06-28 00:08:39,682 INFO L125 PetriNetUnfolderBase]: For 212785/212785 co-relation queries the response was YES. [2024-06-28 00:08:39,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11871 conditions, 1718 events. 945/1718 cut-off events. For 212785/212785 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10306 event pairs, 94 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 11684. Up to 1426 conditions per place. [2024-06-28 00:08:39,706 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 307 selfloop transitions, 115 changer transitions 0/424 dead transitions. [2024-06-28 00:08:39,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 424 transitions, 5790 flow [2024-06-28 00:08:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:08:39,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:08:39,708 INFO L175 Difference]: Start difference. First operand has 426 places, 402 transitions, 4575 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:08:39,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 424 transitions, 5790 flow [2024-06-28 00:08:40,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 424 transitions, 5420 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:40,644 INFO L231 Difference]: Finished difference. Result has 426 places, 404 transitions, 4479 flow [2024-06-28 00:08:40,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4479, PETRI_PLACES=426, PETRI_TRANSITIONS=404} [2024-06-28 00:08:40,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2024-06-28 00:08:40,645 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 404 transitions, 4479 flow [2024-06-28 00:08:40,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:40,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:40,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:40,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 00:08:40,646 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:40,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1729642690, now seen corresponding path program 27 times [2024-06-28 00:08:40,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:40,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268181170] [2024-06-28 00:08:40,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268181170] [2024-06-28 00:08:42,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268181170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:42,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:42,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:42,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999743683] [2024-06-28 00:08:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:42,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:42,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:42,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:42,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:42,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:42,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 404 transitions, 4479 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:42,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:42,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:42,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:43,376 INFO L124 PetriNetUnfolderBase]: 951/1728 cut-off events. [2024-06-28 00:08:43,376 INFO L125 PetriNetUnfolderBase]: For 212652/212652 co-relation queries the response was YES. [2024-06-28 00:08:43,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11705 conditions, 1728 events. 951/1728 cut-off events. For 212652/212652 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 10354 event pairs, 97 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 11519. Up to 1167 conditions per place. [2024-06-28 00:08:43,408 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 190 changer transitions 0/427 dead transitions. [2024-06-28 00:08:43,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 427 transitions, 5739 flow [2024-06-28 00:08:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:43,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:08:43,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47419354838709676 [2024-06-28 00:08:43,410 INFO L175 Difference]: Start difference. First operand has 426 places, 404 transitions, 4479 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:08:43,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 427 transitions, 5739 flow [2024-06-28 00:08:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 427 transitions, 5572 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:44,533 INFO L231 Difference]: Finished difference. Result has 429 places, 406 transitions, 4757 flow [2024-06-28 00:08:44,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4757, PETRI_PLACES=429, PETRI_TRANSITIONS=406} [2024-06-28 00:08:44,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-28 00:08:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 406 transitions, 4757 flow [2024-06-28 00:08:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:44,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 00:08:44,534 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:44,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1729642504, now seen corresponding path program 38 times [2024-06-28 00:08:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:44,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341698496] [2024-06-28 00:08:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:46,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341698496] [2024-06-28 00:08:46,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341698496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:46,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:46,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:46,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000263623] [2024-06-28 00:08:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:46,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:46,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:46,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:46,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:46,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 406 transitions, 4757 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:46,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:46,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:46,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:47,502 INFO L124 PetriNetUnfolderBase]: 958/1739 cut-off events. [2024-06-28 00:08:47,502 INFO L125 PetriNetUnfolderBase]: For 213498/213498 co-relation queries the response was YES. [2024-06-28 00:08:47,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12168 conditions, 1739 events. 958/1739 cut-off events. For 213498/213498 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 10437 event pairs, 96 based on Foata normal form. 2/1739 useless extension candidates. Maximal degree in co-relation 11981. Up to 1254 conditions per place. [2024-06-28 00:08:47,535 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 260 selfloop transitions, 167 changer transitions 0/429 dead transitions. [2024-06-28 00:08:47,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 429 transitions, 6019 flow [2024-06-28 00:08:47,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:08:47,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-06-28 00:08:47,537 INFO L175 Difference]: Start difference. First operand has 429 places, 406 transitions, 4757 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:08:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 429 transitions, 6019 flow [2024-06-28 00:08:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 429 transitions, 5536 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 00:08:48,614 INFO L231 Difference]: Finished difference. Result has 430 places, 408 transitions, 4775 flow [2024-06-28 00:08:48,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4775, PETRI_PLACES=430, PETRI_TRANSITIONS=408} [2024-06-28 00:08:48,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2024-06-28 00:08:48,614 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 408 transitions, 4775 flow [2024-06-28 00:08:48,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:48,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:48,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:48,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 00:08:48,615 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:48,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1734284134, now seen corresponding path program 39 times [2024-06-28 00:08:48,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:48,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500571729] [2024-06-28 00:08:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:48,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:50,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:50,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500571729] [2024-06-28 00:08:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500571729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:50,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:50,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:08:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970043750] [2024-06-28 00:08:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:08:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:08:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:08:50,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:50,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 408 transitions, 4775 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:50,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:50,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:50,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:51,284 INFO L124 PetriNetUnfolderBase]: 962/1749 cut-off events. [2024-06-28 00:08:51,284 INFO L125 PetriNetUnfolderBase]: For 209993/209993 co-relation queries the response was YES. [2024-06-28 00:08:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 1749 events. 962/1749 cut-off events. For 209993/209993 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10464 event pairs, 126 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 12008. Up to 1572 conditions per place. [2024-06-28 00:08:51,308 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 348 selfloop transitions, 74 changer transitions 0/424 dead transitions. [2024-06-28 00:08:51,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 424 transitions, 5679 flow [2024-06-28 00:08:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 00:08:51,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 00:08:51,309 INFO L175 Difference]: Start difference. First operand has 430 places, 408 transitions, 4775 flow. Second operand 10 states and 131 transitions. [2024-06-28 00:08:51,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 424 transitions, 5679 flow [2024-06-28 00:08:52,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 424 transitions, 5432 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:52,210 INFO L231 Difference]: Finished difference. Result has 431 places, 409 transitions, 4699 flow [2024-06-28 00:08:52,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4699, PETRI_PLACES=431, PETRI_TRANSITIONS=409} [2024-06-28 00:08:52,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 401 predicate places. [2024-06-28 00:08:52,211 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 409 transitions, 4699 flow [2024-06-28 00:08:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:52,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:52,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:52,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 00:08:52,212 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:52,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1734284320, now seen corresponding path program 28 times [2024-06-28 00:08:52,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:52,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469135935] [2024-06-28 00:08:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:52,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:54,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:54,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469135935] [2024-06-28 00:08:54,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469135935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:54,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:54,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:54,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85776103] [2024-06-28 00:08:54,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:54,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:54,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:54,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:08:54,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 409 transitions, 4699 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:54,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:54,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:08:54,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:55,181 INFO L124 PetriNetUnfolderBase]: 978/1775 cut-off events. [2024-06-28 00:08:55,181 INFO L125 PetriNetUnfolderBase]: For 229969/229969 co-relation queries the response was YES. [2024-06-28 00:08:55,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 1775 events. 978/1775 cut-off events. For 229969/229969 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10674 event pairs, 130 based on Foata normal form. 2/1775 useless extension candidates. Maximal degree in co-relation 12421. Up to 1425 conditions per place. [2024-06-28 00:08:55,213 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 124 changer transitions 0/434 dead transitions. [2024-06-28 00:08:55,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 434 transitions, 6037 flow [2024-06-28 00:08:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:08:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:08:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:08:55,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2024-06-28 00:08:55,215 INFO L175 Difference]: Start difference. First operand has 431 places, 409 transitions, 4699 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:08:55,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 434 transitions, 6037 flow [2024-06-28 00:08:56,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 434 transitions, 5877 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:08:56,612 INFO L231 Difference]: Finished difference. Result has 433 places, 413 transitions, 4936 flow [2024-06-28 00:08:56,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4936, PETRI_PLACES=433, PETRI_TRANSITIONS=413} [2024-06-28 00:08:56,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-28 00:08:56,613 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 413 transitions, 4936 flow [2024-06-28 00:08:56,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:56,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:56,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:08:56,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 00:08:56,613 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:08:56,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1734290830, now seen corresponding path program 29 times [2024-06-28 00:08:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302967661] [2024-06-28 00:08:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:08:58,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302967661] [2024-06-28 00:08:58,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302967661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:58,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:58,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:08:58,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19874248] [2024-06-28 00:08:58,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:08:58,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:08:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:08:58,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:08:58,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 413 transitions, 4936 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:08:58,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:58,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:08:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:59,659 INFO L124 PetriNetUnfolderBase]: 974/1769 cut-off events. [2024-06-28 00:08:59,660 INFO L125 PetriNetUnfolderBase]: For 211240/211240 co-relation queries the response was YES. [2024-06-28 00:08:59,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 1769 events. 974/1769 cut-off events. For 211240/211240 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 10666 event pairs, 126 based on Foata normal form. 2/1769 useless extension candidates. Maximal degree in co-relation 12232. Up to 1449 conditions per place. [2024-06-28 00:08:59,685 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 312 selfloop transitions, 124 changer transitions 0/438 dead transitions. [2024-06-28 00:08:59,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 438 transitions, 5920 flow [2024-06-28 00:08:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:08:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:08:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-28 00:08:59,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37965260545905705 [2024-06-28 00:08:59,686 INFO L175 Difference]: Start difference. First operand has 433 places, 413 transitions, 4936 flow. Second operand 13 states and 153 transitions. [2024-06-28 00:08:59,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 438 transitions, 5920 flow [2024-06-28 00:09:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 438 transitions, 5603 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:00,997 INFO L231 Difference]: Finished difference. Result has 438 places, 420 transitions, 4932 flow [2024-06-28 00:09:00,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4627, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4932, PETRI_PLACES=438, PETRI_TRANSITIONS=420} [2024-06-28 00:09:00,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2024-06-28 00:09:00,997 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 420 transitions, 4932 flow [2024-06-28 00:09:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:00,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:00,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 00:09:00,998 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:00,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1734106504, now seen corresponding path program 40 times [2024-06-28 00:09:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:00,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509385301] [2024-06-28 00:09:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:02,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:02,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509385301] [2024-06-28 00:09:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509385301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:02,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:02,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:02,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265250290] [2024-06-28 00:09:02,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:02,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:02,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:02,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:02,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:02,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 420 transitions, 4932 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:02,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:02,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:02,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:03,594 INFO L124 PetriNetUnfolderBase]: 985/1790 cut-off events. [2024-06-28 00:09:03,594 INFO L125 PetriNetUnfolderBase]: For 229448/229448 co-relation queries the response was YES. [2024-06-28 00:09:03,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12732 conditions, 1790 events. 985/1790 cut-off events. For 229448/229448 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 10809 event pairs, 120 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 12544. Up to 1558 conditions per place. [2024-06-28 00:09:03,627 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 353 selfloop transitions, 84 changer transitions 0/439 dead transitions. [2024-06-28 00:09:03,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 439 transitions, 6163 flow [2024-06-28 00:09:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:03,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 00:09:03,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-28 00:09:03,629 INFO L175 Difference]: Start difference. First operand has 438 places, 420 transitions, 4932 flow. Second operand 10 states and 135 transitions. [2024-06-28 00:09:03,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 439 transitions, 6163 flow [2024-06-28 00:09:05,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 439 transitions, 5970 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:05,038 INFO L231 Difference]: Finished difference. Result has 440 places, 422 transitions, 4950 flow [2024-06-28 00:09:05,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4950, PETRI_PLACES=440, PETRI_TRANSITIONS=422} [2024-06-28 00:09:05,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-06-28 00:09:05,039 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 422 transitions, 4950 flow [2024-06-28 00:09:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:05,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:05,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:05,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 00:09:05,039 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:05,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1734111340, now seen corresponding path program 30 times [2024-06-28 00:09:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544102144] [2024-06-28 00:09:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:06,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:06,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544102144] [2024-06-28 00:09:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544102144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745128516] [2024-06-28 00:09:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:07,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:07,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 422 transitions, 4950 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:07,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:07,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:07,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:07,883 INFO L124 PetriNetUnfolderBase]: 991/1800 cut-off events. [2024-06-28 00:09:07,884 INFO L125 PetriNetUnfolderBase]: For 233670/233670 co-relation queries the response was YES. [2024-06-28 00:09:07,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12750 conditions, 1800 events. 991/1800 cut-off events. For 233670/233670 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10870 event pairs, 130 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 12563. Up to 1429 conditions per place. [2024-06-28 00:09:07,919 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 303 selfloop transitions, 137 changer transitions 0/442 dead transitions. [2024-06-28 00:09:07,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 442 transitions, 5958 flow [2024-06-28 00:09:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:09:07,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-28 00:09:07,921 INFO L175 Difference]: Start difference. First operand has 440 places, 422 transitions, 4950 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:09:07,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 442 transitions, 5958 flow [2024-06-28 00:09:09,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 442 transitions, 5831 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:09,384 INFO L231 Difference]: Finished difference. Result has 442 places, 424 transitions, 5172 flow [2024-06-28 00:09:09,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5172, PETRI_PLACES=442, PETRI_TRANSITIONS=424} [2024-06-28 00:09:09,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 412 predicate places. [2024-06-28 00:09:09,385 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 424 transitions, 5172 flow [2024-06-28 00:09:09,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:09,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:09,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:09,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 00:09:09,386 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:09,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:09,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1734111154, now seen corresponding path program 41 times [2024-06-28 00:09:09,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:09,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893996131] [2024-06-28 00:09:09,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:11,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893996131] [2024-06-28 00:09:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893996131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604668760] [2024-06-28 00:09:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:11,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:11,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:11,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:11,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 424 transitions, 5172 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:11,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:11,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:11,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:11,822 INFO L124 PetriNetUnfolderBase]: 988/1795 cut-off events. [2024-06-28 00:09:11,822 INFO L125 PetriNetUnfolderBase]: For 214731/214731 co-relation queries the response was YES. [2024-06-28 00:09:11,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 1795 events. 988/1795 cut-off events. For 214731/214731 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10832 event pairs, 123 based on Foata normal form. 2/1795 useless extension candidates. Maximal degree in co-relation 12480. Up to 1606 conditions per place. [2024-06-28 00:09:11,846 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 357 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-28 00:09:11,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 439 transitions, 6090 flow [2024-06-28 00:09:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-28 00:09:11,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2024-06-28 00:09:11,848 INFO L175 Difference]: Start difference. First operand has 442 places, 424 transitions, 5172 flow. Second operand 10 states and 133 transitions. [2024-06-28 00:09:11,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 439 transitions, 6090 flow [2024-06-28 00:09:12,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 439 transitions, 5761 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:12,893 INFO L231 Difference]: Finished difference. Result has 443 places, 424 transitions, 5009 flow [2024-06-28 00:09:12,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4843, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5009, PETRI_PLACES=443, PETRI_TRANSITIONS=424} [2024-06-28 00:09:12,894 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 00:09:12,894 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 424 transitions, 5009 flow [2024-06-28 00:09:12,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:12,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:12,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:12,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 00:09:12,895 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:12,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1900517914, now seen corresponding path program 42 times [2024-06-28 00:09:12,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:12,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718073127] [2024-06-28 00:09:12,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:14,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:14,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718073127] [2024-06-28 00:09:14,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718073127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:14,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:14,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:14,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59002596] [2024-06-28 00:09:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:14,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:14,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:14,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:14,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:14,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 424 transitions, 5009 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:14,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:14,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:14,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:15,118 INFO L124 PetriNetUnfolderBase]: 992/1800 cut-off events. [2024-06-28 00:09:15,119 INFO L125 PetriNetUnfolderBase]: For 213439/213439 co-relation queries the response was YES. [2024-06-28 00:09:15,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12513 conditions, 1800 events. 992/1800 cut-off events. For 213439/213439 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 10870 event pairs, 93 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 12325. Up to 1626 conditions per place. [2024-06-28 00:09:15,142 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 370 selfloop transitions, 65 changer transitions 0/437 dead transitions. [2024-06-28 00:09:15,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 437 transitions, 5926 flow [2024-06-28 00:09:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:09:15,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-28 00:09:15,144 INFO L175 Difference]: Start difference. First operand has 443 places, 424 transitions, 5009 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:09:15,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 437 transitions, 5926 flow [2024-06-28 00:09:16,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 437 transitions, 5752 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:16,197 INFO L231 Difference]: Finished difference. Result has 443 places, 425 transitions, 4992 flow [2024-06-28 00:09:16,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4992, PETRI_PLACES=443, PETRI_TRANSITIONS=425} [2024-06-28 00:09:16,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 00:09:16,197 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 425 transitions, 4992 flow [2024-06-28 00:09:16,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:16,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:16,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:16,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 00:09:16,198 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:16,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1906774024, now seen corresponding path program 43 times [2024-06-28 00:09:16,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:16,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572394157] [2024-06-28 00:09:16,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:16,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:17,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572394157] [2024-06-28 00:09:17,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572394157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:17,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:17,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:17,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140216864] [2024-06-28 00:09:17,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:17,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:17,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:17,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 425 transitions, 4992 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:17,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:17,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:17,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:18,350 INFO L124 PetriNetUnfolderBase]: 996/1808 cut-off events. [2024-06-28 00:09:18,350 INFO L125 PetriNetUnfolderBase]: For 214146/214146 co-relation queries the response was YES. [2024-06-28 00:09:18,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12535 conditions, 1808 events. 996/1808 cut-off events. For 214146/214146 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 10936 event pairs, 94 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 12347. Up to 1634 conditions per place. [2024-06-28 00:09:18,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 369 selfloop transitions, 67 changer transitions 0/438 dead transitions. [2024-06-28 00:09:18,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 438 transitions, 5913 flow [2024-06-28 00:09:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 00:09:18,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 00:09:18,376 INFO L175 Difference]: Start difference. First operand has 443 places, 425 transitions, 4992 flow. Second operand 10 states and 127 transitions. [2024-06-28 00:09:18,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 438 transitions, 5913 flow [2024-06-28 00:09:19,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 438 transitions, 5769 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:19,397 INFO L231 Difference]: Finished difference. Result has 444 places, 426 transitions, 5011 flow [2024-06-28 00:09:19,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5011, PETRI_PLACES=444, PETRI_TRANSITIONS=426} [2024-06-28 00:09:19,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2024-06-28 00:09:19,398 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 426 transitions, 5011 flow [2024-06-28 00:09:19,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:19,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:19,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:19,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 00:09:19,398 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:19,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1907011360, now seen corresponding path program 31 times [2024-06-28 00:09:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273063018] [2024-06-28 00:09:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:19,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:20,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273063018] [2024-06-28 00:09:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273063018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:20,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:20,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:20,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976296279] [2024-06-28 00:09:20,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:21,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:21,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 426 transitions, 5011 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:21,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:21,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:21,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:22,208 INFO L124 PetriNetUnfolderBase]: 1014/1838 cut-off events. [2024-06-28 00:09:22,208 INFO L125 PetriNetUnfolderBase]: For 214707/214707 co-relation queries the response was YES. [2024-06-28 00:09:22,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12755 conditions, 1838 events. 1014/1838 cut-off events. For 214707/214707 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 11124 event pairs, 95 based on Foata normal form. 2/1838 useless extension candidates. Maximal degree in co-relation 12567. Up to 1517 conditions per place. [2024-06-28 00:09:22,243 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 328 selfloop transitions, 122 changer transitions 0/452 dead transitions. [2024-06-28 00:09:22,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 452 transitions, 6100 flow [2024-06-28 00:09:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:09:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:09:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-28 00:09:22,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-28 00:09:22,245 INFO L175 Difference]: Start difference. First operand has 444 places, 426 transitions, 5011 flow. Second operand 13 states and 150 transitions. [2024-06-28 00:09:22,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 452 transitions, 6100 flow [2024-06-28 00:09:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 452 transitions, 5950 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:23,512 INFO L231 Difference]: Finished difference. Result has 448 places, 437 transitions, 5272 flow [2024-06-28 00:09:23,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4861, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5272, PETRI_PLACES=448, PETRI_TRANSITIONS=437} [2024-06-28 00:09:23,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 418 predicate places. [2024-06-28 00:09:23,513 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 437 transitions, 5272 flow [2024-06-28 00:09:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:23,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 00:09:23,514 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:23,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1900518100, now seen corresponding path program 32 times [2024-06-28 00:09:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932576037] [2024-06-28 00:09:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:25,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:25,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:25,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932576037] [2024-06-28 00:09:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932576037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:25,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:25,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484058887] [2024-06-28 00:09:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:25,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:25,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:25,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 437 transitions, 5272 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:25,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:25,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:25,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:26,035 INFO L124 PetriNetUnfolderBase]: 1030/1864 cut-off events. [2024-06-28 00:09:26,036 INFO L125 PetriNetUnfolderBase]: For 235166/235166 co-relation queries the response was YES. [2024-06-28 00:09:26,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13457 conditions, 1864 events. 1030/1864 cut-off events. For 235166/235166 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11308 event pairs, 97 based on Foata normal form. 2/1864 useless extension candidates. Maximal degree in co-relation 13269. Up to 1521 conditions per place. [2024-06-28 00:09:26,063 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 343 selfloop transitions, 113 changer transitions 0/458 dead transitions. [2024-06-28 00:09:26,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 458 transitions, 6659 flow [2024-06-28 00:09:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-28 00:09:26,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-28 00:09:26,065 INFO L175 Difference]: Start difference. First operand has 448 places, 437 transitions, 5272 flow. Second operand 10 states and 142 transitions. [2024-06-28 00:09:26,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 458 transitions, 6659 flow [2024-06-28 00:09:27,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 458 transitions, 6451 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 00:09:27,147 INFO L231 Difference]: Finished difference. Result has 453 places, 441 transitions, 5451 flow [2024-06-28 00:09:27,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5451, PETRI_PLACES=453, PETRI_TRANSITIONS=441} [2024-06-28 00:09:27,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-28 00:09:27,147 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 441 transitions, 5451 flow [2024-06-28 00:09:27,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:27,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:27,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 00:09:27,148 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:27,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1907020288, now seen corresponding path program 8 times [2024-06-28 00:09:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725221865] [2024-06-28 00:09:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:29,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725221865] [2024-06-28 00:09:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725221865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077740779] [2024-06-28 00:09:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:29,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:29,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 441 transitions, 5451 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:29,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:29,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:29,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:30,087 INFO L124 PetriNetUnfolderBase]: 1031/1868 cut-off events. [2024-06-28 00:09:30,087 INFO L125 PetriNetUnfolderBase]: For 238574/238574 co-relation queries the response was YES. [2024-06-28 00:09:30,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13161 conditions, 1868 events. 1031/1868 cut-off events. For 238574/238574 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 11365 event pairs, 105 based on Foata normal form. 4/1870 useless extension candidates. Maximal degree in co-relation 12972. Up to 1550 conditions per place. [2024-06-28 00:09:30,124 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 361 selfloop transitions, 93 changer transitions 0/456 dead transitions. [2024-06-28 00:09:30,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 456 transitions, 6405 flow [2024-06-28 00:09:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:09:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:09:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 00:09:30,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 00:09:30,126 INFO L175 Difference]: Start difference. First operand has 453 places, 441 transitions, 5451 flow. Second operand 11 states and 140 transitions. [2024-06-28 00:09:30,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 456 transitions, 6405 flow [2024-06-28 00:09:31,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 456 transitions, 6134 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 00:09:31,383 INFO L231 Difference]: Finished difference. Result has 456 places, 442 transitions, 5385 flow [2024-06-28 00:09:31,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5385, PETRI_PLACES=456, PETRI_TRANSITIONS=442} [2024-06-28 00:09:31,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2024-06-28 00:09:31,384 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 442 transitions, 5385 flow [2024-06-28 00:09:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:31,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:31,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:31,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 00:09:31,384 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:31,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1150984758, now seen corresponding path program 33 times [2024-06-28 00:09:31,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:31,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424760722] [2024-06-28 00:09:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:31,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424760722] [2024-06-28 00:09:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424760722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:33,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819805876] [2024-06-28 00:09:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:33,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:33,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 442 transitions, 5385 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:33,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:33,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:33,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:34,103 INFO L124 PetriNetUnfolderBase]: 1037/1877 cut-off events. [2024-06-28 00:09:34,103 INFO L125 PetriNetUnfolderBase]: For 219543/219543 co-relation queries the response was YES. [2024-06-28 00:09:34,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13176 conditions, 1877 events. 1037/1877 cut-off events. For 219543/219543 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11434 event pairs, 96 based on Foata normal form. 2/1877 useless extension candidates. Maximal degree in co-relation 12987. Up to 1510 conditions per place. [2024-06-28 00:09:34,140 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 338 selfloop transitions, 121 changer transitions 0/461 dead transitions. [2024-06-28 00:09:34,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 461 transitions, 6716 flow [2024-06-28 00:09:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:09:34,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483870967741935 [2024-06-28 00:09:34,142 INFO L175 Difference]: Start difference. First operand has 456 places, 442 transitions, 5385 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:09:34,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 461 transitions, 6716 flow [2024-06-28 00:09:35,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 461 transitions, 6487 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:35,459 INFO L231 Difference]: Finished difference. Result has 457 places, 444 transitions, 5481 flow [2024-06-28 00:09:35,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5156, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5481, PETRI_PLACES=457, PETRI_TRANSITIONS=444} [2024-06-28 00:09:35,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-28 00:09:35,459 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 444 transitions, 5481 flow [2024-06-28 00:09:35,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:35,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:35,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:35,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 00:09:35,460 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:35,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1906780720, now seen corresponding path program 34 times [2024-06-28 00:09:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:35,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417392817] [2024-06-28 00:09:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:37,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:37,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417392817] [2024-06-28 00:09:37,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417392817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:37,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:37,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933729358] [2024-06-28 00:09:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:37,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:37,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 444 transitions, 5481 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:37,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:37,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:37,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:38,024 INFO L124 PetriNetUnfolderBase]: 1033/1871 cut-off events. [2024-06-28 00:09:38,024 INFO L125 PetriNetUnfolderBase]: For 202494/202494 co-relation queries the response was YES. [2024-06-28 00:09:38,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 1871 events. 1033/1871 cut-off events. For 202494/202494 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11380 event pairs, 94 based on Foata normal form. 2/1871 useless extension candidates. Maximal degree in co-relation 12660. Up to 1550 conditions per place. [2024-06-28 00:09:38,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 340 selfloop transitions, 120 changer transitions 0/462 dead transitions. [2024-06-28 00:09:38,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 462 transitions, 6460 flow [2024-06-28 00:09:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-06-28 00:09:38,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 00:09:38,062 INFO L175 Difference]: Start difference. First operand has 457 places, 444 transitions, 5481 flow. Second operand 14 states and 160 transitions. [2024-06-28 00:09:38,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 462 transitions, 6460 flow [2024-06-28 00:09:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 462 transitions, 6016 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:38,954 INFO L231 Difference]: Finished difference. Result has 460 places, 446 transitions, 5304 flow [2024-06-28 00:09:38,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5037, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5304, PETRI_PLACES=460, PETRI_TRANSITIONS=446} [2024-06-28 00:09:38,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-28 00:09:38,955 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 446 transitions, 5304 flow [2024-06-28 00:09:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:38,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:38,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 00:09:38,956 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:38,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1103577584, now seen corresponding path program 35 times [2024-06-28 00:09:38,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263124067] [2024-06-28 00:09:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263124067] [2024-06-28 00:09:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263124067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028100591] [2024-06-28 00:09:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:40,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:40,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 446 transitions, 5304 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:40,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:40,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:40,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:41,565 INFO L124 PetriNetUnfolderBase]: 1029/1865 cut-off events. [2024-06-28 00:09:41,565 INFO L125 PetriNetUnfolderBase]: For 180566/180566 co-relation queries the response was YES. [2024-06-28 00:09:41,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 1865 events. 1029/1865 cut-off events. For 180566/180566 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11360 event pairs, 95 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 12081. Up to 1448 conditions per place. [2024-06-28 00:09:41,592 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 323 selfloop transitions, 137 changer transitions 0/462 dead transitions. [2024-06-28 00:09:41,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 462 transitions, 6556 flow [2024-06-28 00:09:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:09:41,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2024-06-28 00:09:41,593 INFO L175 Difference]: Start difference. First operand has 460 places, 446 transitions, 5304 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:09:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 462 transitions, 6556 flow [2024-06-28 00:09:42,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 462 transitions, 6323 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:09:42,671 INFO L231 Difference]: Finished difference. Result has 460 places, 446 transitions, 5354 flow [2024-06-28 00:09:42,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=5071, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5354, PETRI_PLACES=460, PETRI_TRANSITIONS=446} [2024-06-28 00:09:42,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 430 predicate places. [2024-06-28 00:09:42,672 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 446 transitions, 5354 flow [2024-06-28 00:09:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:42,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:42,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 00:09:42,672 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:42,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1900524610, now seen corresponding path program 36 times [2024-06-28 00:09:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389287867] [2024-06-28 00:09:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:44,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:44,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389287867] [2024-06-28 00:09:44,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389287867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:44,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:44,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:09:44,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106835529] [2024-06-28 00:09:44,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:44,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:09:44,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:44,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:09:44,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:09:44,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:44,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 446 transitions, 5354 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:44,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:44,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:44,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:45,250 INFO L124 PetriNetUnfolderBase]: 1025/1859 cut-off events. [2024-06-28 00:09:45,251 INFO L125 PetriNetUnfolderBase]: For 163630/163630 co-relation queries the response was YES. [2024-06-28 00:09:45,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1859 events. 1025/1859 cut-off events. For 163630/163630 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11347 event pairs, 92 based on Foata normal form. 2/1859 useless extension candidates. Maximal degree in co-relation 11781. Up to 1546 conditions per place. [2024-06-28 00:09:45,288 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 344 selfloop transitions, 116 changer transitions 0/462 dead transitions. [2024-06-28 00:09:45,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 462 transitions, 6316 flow [2024-06-28 00:09:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:09:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:09:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-28 00:09:45,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:09:45,290 INFO L175 Difference]: Start difference. First operand has 460 places, 446 transitions, 5354 flow. Second operand 14 states and 161 transitions. [2024-06-28 00:09:45,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 462 transitions, 6316 flow [2024-06-28 00:09:46,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 462 transitions, 5709 flow, removed 50 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:46,355 INFO L231 Difference]: Finished difference. Result has 463 places, 446 transitions, 4985 flow [2024-06-28 00:09:46,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4985, PETRI_PLACES=463, PETRI_TRANSITIONS=446} [2024-06-28 00:09:46,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-28 00:09:46,357 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 446 transitions, 4985 flow [2024-06-28 00:09:46,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:46,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:46,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:46,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 00:09:46,357 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1900344934, now seen corresponding path program 44 times [2024-06-28 00:09:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074983027] [2024-06-28 00:09:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074983027] [2024-06-28 00:09:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074983027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:48,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:48,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672234581] [2024-06-28 00:09:48,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:48,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:48,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:48,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:48,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 446 transitions, 4985 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:48,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:48,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:48,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:49,240 INFO L124 PetriNetUnfolderBase]: 1029/1867 cut-off events. [2024-06-28 00:09:49,241 INFO L125 PetriNetUnfolderBase]: For 161922/161922 co-relation queries the response was YES. [2024-06-28 00:09:49,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11592 conditions, 1867 events. 1029/1867 cut-off events. For 161922/161922 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 11403 event pairs, 93 based on Foata normal form. 2/1867 useless extension candidates. Maximal degree in co-relation 11404. Up to 1675 conditions per place. [2024-06-28 00:09:49,271 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 382 selfloop transitions, 75 changer transitions 0/459 dead transitions. [2024-06-28 00:09:49,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 459 transitions, 5950 flow [2024-06-28 00:09:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 00:09:49,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 00:09:49,272 INFO L175 Difference]: Start difference. First operand has 463 places, 446 transitions, 4985 flow. Second operand 10 states and 129 transitions. [2024-06-28 00:09:49,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 459 transitions, 5950 flow [2024-06-28 00:09:50,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 459 transitions, 5653 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:09:50,299 INFO L231 Difference]: Finished difference. Result has 462 places, 447 transitions, 4869 flow [2024-06-28 00:09:50,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4869, PETRI_PLACES=462, PETRI_TRANSITIONS=447} [2024-06-28 00:09:50,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-28 00:09:50,300 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 447 transitions, 4869 flow [2024-06-28 00:09:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:50,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:50,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 00:09:50,301 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:50,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1900340284, now seen corresponding path program 45 times [2024-06-28 00:09:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652526834] [2024-06-28 00:09:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:52,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652526834] [2024-06-28 00:09:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652526834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:52,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:09:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216407661] [2024-06-28 00:09:52,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:09:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:09:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:09:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:09:52,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 447 transitions, 4869 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:52,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:52,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:09:52,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:53,199 INFO L124 PetriNetUnfolderBase]: 1026/1862 cut-off events. [2024-06-28 00:09:53,199 INFO L125 PetriNetUnfolderBase]: For 143977/143977 co-relation queries the response was YES. [2024-06-28 00:09:53,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 1862 events. 1026/1862 cut-off events. For 143977/143977 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 11359 event pairs, 88 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 10842. Up to 1618 conditions per place. [2024-06-28 00:09:53,234 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 377 selfloop transitions, 81 changer transitions 0/460 dead transitions. [2024-06-28 00:09:53,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 460 transitions, 5815 flow [2024-06-28 00:09:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:09:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:09:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-28 00:09:53,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 00:09:53,236 INFO L175 Difference]: Start difference. First operand has 462 places, 447 transitions, 4869 flow. Second operand 10 states and 130 transitions. [2024-06-28 00:09:53,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 460 transitions, 5815 flow [2024-06-28 00:09:54,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 460 transitions, 5639 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 00:09:54,194 INFO L231 Difference]: Finished difference. Result has 463 places, 447 transitions, 4861 flow [2024-06-28 00:09:54,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4861, PETRI_PLACES=463, PETRI_TRANSITIONS=447} [2024-06-28 00:09:54,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-28 00:09:54,195 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 447 transitions, 4861 flow [2024-06-28 00:09:54,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:54,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:54,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 00:09:54,196 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1536543890, now seen corresponding path program 1 times [2024-06-28 00:09:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090743392] [2024-06-28 00:09:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:09:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:56,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090743392] [2024-06-28 00:09:56,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090743392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:56,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:56,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:09:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529983142] [2024-06-28 00:09:56,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:56,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:09:56,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:09:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:09:56,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:09:56,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 447 transitions, 4861 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:56,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:56,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:09:56,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:57,514 INFO L124 PetriNetUnfolderBase]: 1067/1950 cut-off events. [2024-06-28 00:09:57,514 INFO L125 PetriNetUnfolderBase]: For 303298/303298 co-relation queries the response was YES. [2024-06-28 00:09:57,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12769 conditions, 1950 events. 1067/1950 cut-off events. For 303298/303298 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 11937 event pairs, 255 based on Foata normal form. 8/1956 useless extension candidates. Maximal degree in co-relation 12581. Up to 895 conditions per place. [2024-06-28 00:09:57,551 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 315 selfloop transitions, 141 changer transitions 16/474 dead transitions. [2024-06-28 00:09:57,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 474 transitions, 6219 flow [2024-06-28 00:09:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:09:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:09:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 00:09:57,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 00:09:57,553 INFO L175 Difference]: Start difference. First operand has 463 places, 447 transitions, 4861 flow. Second operand 12 states and 150 transitions. [2024-06-28 00:09:57,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 474 transitions, 6219 flow [2024-06-28 00:09:58,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 474 transitions, 5752 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 00:09:58,936 INFO L231 Difference]: Finished difference. Result has 462 places, 443 transitions, 4650 flow [2024-06-28 00:09:58,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4396, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4650, PETRI_PLACES=462, PETRI_TRANSITIONS=443} [2024-06-28 00:09:58,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2024-06-28 00:09:58,936 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 443 transitions, 4650 flow [2024-06-28 00:09:58,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:09:58,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:58,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:09:58,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 00:09:58,937 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:09:58,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:58,937 INFO L85 PathProgramCache]: Analyzing trace with hash -953832806, now seen corresponding path program 2 times [2024-06-28 00:09:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971265774] [2024-06-28 00:09:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:02,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:02,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971265774] [2024-06-28 00:10:02,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971265774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:02,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:02,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796177705] [2024-06-28 00:10:02,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:02,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:02,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:02,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 443 transitions, 4650 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:02,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:02,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:02,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:03,586 INFO L124 PetriNetUnfolderBase]: 1055/1930 cut-off events. [2024-06-28 00:10:03,586 INFO L125 PetriNetUnfolderBase]: For 323419/323419 co-relation queries the response was YES. [2024-06-28 00:10:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 1930 events. 1055/1930 cut-off events. For 323419/323419 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 11785 event pairs, 262 based on Foata normal form. 10/1938 useless extension candidates. Maximal degree in co-relation 12150. Up to 1420 conditions per place. [2024-06-28 00:10:03,623 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 300 selfloop transitions, 142 changer transitions 23/467 dead transitions. [2024-06-28 00:10:03,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 467 transitions, 5690 flow [2024-06-28 00:10:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 00:10:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 00:10:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 184 transitions. [2024-06-28 00:10:03,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:10:03,625 INFO L175 Difference]: Start difference. First operand has 462 places, 443 transitions, 4650 flow. Second operand 16 states and 184 transitions. [2024-06-28 00:10:03,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 467 transitions, 5690 flow [2024-06-28 00:10:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 467 transitions, 5483 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:05,070 INFO L231 Difference]: Finished difference. Result has 464 places, 426 transitions, 4584 flow [2024-06-28 00:10:05,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4584, PETRI_PLACES=464, PETRI_TRANSITIONS=426} [2024-06-28 00:10:05,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 434 predicate places. [2024-06-28 00:10:05,071 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 426 transitions, 4584 flow [2024-06-28 00:10:05,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:05,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:05,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 00:10:05,072 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:05,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1264242822, now seen corresponding path program 3 times [2024-06-28 00:10:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345448433] [2024-06-28 00:10:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:07,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345448433] [2024-06-28 00:10:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345448433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:07,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:07,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:07,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78506752] [2024-06-28 00:10:07,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:07,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:07,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:07,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 426 transitions, 4584 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:07,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:07,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:07,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:08,308 INFO L124 PetriNetUnfolderBase]: 1019/1874 cut-off events. [2024-06-28 00:10:08,308 INFO L125 PetriNetUnfolderBase]: For 302529/302529 co-relation queries the response was YES. [2024-06-28 00:10:08,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 1874 events. 1019/1874 cut-off events. For 302529/302529 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11425 event pairs, 260 based on Foata normal form. 8/1880 useless extension candidates. Maximal degree in co-relation 12039. Up to 1422 conditions per place. [2024-06-28 00:10:08,344 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 306 selfloop transitions, 125 changer transitions 11/444 dead transitions. [2024-06-28 00:10:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 444 transitions, 5542 flow [2024-06-28 00:10:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:10:08,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:10:08,346 INFO L175 Difference]: Start difference. First operand has 464 places, 426 transitions, 4584 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:10:08,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 444 transitions, 5542 flow [2024-06-28 00:10:09,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 444 transitions, 5221 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-28 00:10:09,760 INFO L231 Difference]: Finished difference. Result has 453 places, 423 transitions, 4490 flow [2024-06-28 00:10:09,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4490, PETRI_PLACES=453, PETRI_TRANSITIONS=423} [2024-06-28 00:10:09,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-06-28 00:10:09,761 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 423 transitions, 4490 flow [2024-06-28 00:10:09,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:09,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:09,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:09,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 00:10:09,761 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:09,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash -953982536, now seen corresponding path program 4 times [2024-06-28 00:10:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566766301] [2024-06-28 00:10:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:12,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566766301] [2024-06-28 00:10:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566766301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128699033] [2024-06-28 00:10:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:12,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:12,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:12,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:12,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:12,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 423 transitions, 4490 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:12,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:12,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:12,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:13,212 INFO L124 PetriNetUnfolderBase]: 1049/1940 cut-off events. [2024-06-28 00:10:13,212 INFO L125 PetriNetUnfolderBase]: For 441221/441221 co-relation queries the response was YES. [2024-06-28 00:10:13,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14330 conditions, 1940 events. 1049/1940 cut-off events. For 441221/441221 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11843 event pairs, 287 based on Foata normal form. 8/1946 useless extension candidates. Maximal degree in co-relation 14145. Up to 1322 conditions per place. [2024-06-28 00:10:13,250 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 304 selfloop transitions, 127 changer transitions 17/450 dead transitions. [2024-06-28 00:10:13,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 450 transitions, 5806 flow [2024-06-28 00:10:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:10:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:10:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-28 00:10:13,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143920595533499 [2024-06-28 00:10:13,252 INFO L175 Difference]: Start difference. First operand has 453 places, 423 transitions, 4490 flow. Second operand 13 states and 167 transitions. [2024-06-28 00:10:13,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 450 transitions, 5806 flow [2024-06-28 00:10:15,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 450 transitions, 5546 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:15,243 INFO L231 Difference]: Finished difference. Result has 452 places, 413 transitions, 4402 flow [2024-06-28 00:10:15,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4402, PETRI_PLACES=452, PETRI_TRANSITIONS=413} [2024-06-28 00:10:15,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-28 00:10:15,247 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 413 transitions, 4402 flow [2024-06-28 00:10:15,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:15,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:15,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:15,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 00:10:15,247 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:15,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1784398264, now seen corresponding path program 5 times [2024-06-28 00:10:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118320388] [2024-06-28 00:10:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:17,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:17,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118320388] [2024-06-28 00:10:17,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118320388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:17,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:17,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:17,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547682082] [2024-06-28 00:10:17,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:17,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:17,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:17,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:17,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 413 transitions, 4402 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:17,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:17,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:17,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:18,656 INFO L124 PetriNetUnfolderBase]: 1018/1883 cut-off events. [2024-06-28 00:10:18,670 INFO L125 PetriNetUnfolderBase]: For 441131/441131 co-relation queries the response was YES. [2024-06-28 00:10:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14098 conditions, 1883 events. 1018/1883 cut-off events. For 441131/441131 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11383 event pairs, 283 based on Foata normal form. 8/1889 useless extension candidates. Maximal degree in co-relation 13913. Up to 1587 conditions per place. [2024-06-28 00:10:18,745 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 328 selfloop transitions, 84 changer transitions 18/432 dead transitions. [2024-06-28 00:10:18,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 432 transitions, 5332 flow [2024-06-28 00:10:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:10:18,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:10:18,746 INFO L175 Difference]: Start difference. First operand has 452 places, 413 transitions, 4402 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:10:18,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 432 transitions, 5332 flow [2024-06-28 00:10:20,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 432 transitions, 5159 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:20,590 INFO L231 Difference]: Finished difference. Result has 445 places, 408 transitions, 4348 flow [2024-06-28 00:10:20,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4229, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4348, PETRI_PLACES=445, PETRI_TRANSITIONS=408} [2024-06-28 00:10:20,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 00:10:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 408 transitions, 4348 flow [2024-06-28 00:10:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:20,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 00:10:20,591 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 896502930, now seen corresponding path program 6 times [2024-06-28 00:10:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139822881] [2024-06-28 00:10:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139822881] [2024-06-28 00:10:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139822881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641954623] [2024-06-28 00:10:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:22,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:22,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:22,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 408 transitions, 4348 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:22,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:22,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:22,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:23,840 INFO L124 PetriNetUnfolderBase]: 966/1775 cut-off events. [2024-06-28 00:10:23,841 INFO L125 PetriNetUnfolderBase]: For 302863/302863 co-relation queries the response was YES. [2024-06-28 00:10:23,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11633 conditions, 1775 events. 966/1775 cut-off events. For 302863/302863 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10632 event pairs, 251 based on Foata normal form. 8/1781 useless extension candidates. Maximal degree in co-relation 11448. Up to 1614 conditions per place. [2024-06-28 00:10:23,874 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 366 selfloop transitions, 45 changer transitions 11/424 dead transitions. [2024-06-28 00:10:23,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 424 transitions, 5254 flow [2024-06-28 00:10:23,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:10:23,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:10:23,876 INFO L175 Difference]: Start difference. First operand has 445 places, 408 transitions, 4348 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:10:23,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 424 transitions, 5254 flow [2024-06-28 00:10:25,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 424 transitions, 5074 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:25,156 INFO L231 Difference]: Finished difference. Result has 441 places, 405 transitions, 4226 flow [2024-06-28 00:10:25,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4226, PETRI_PLACES=441, PETRI_TRANSITIONS=405} [2024-06-28 00:10:25,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 00:10:25,157 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 405 transitions, 4226 flow [2024-06-28 00:10:25,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:25,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:25,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:25,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 00:10:25,158 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:25,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash -661871026, now seen corresponding path program 7 times [2024-06-28 00:10:25,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546854265] [2024-06-28 00:10:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:27,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:27,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546854265] [2024-06-28 00:10:27,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546854265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:27,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:27,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:27,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223465267] [2024-06-28 00:10:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:27,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:27,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:27,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 405 transitions, 4226 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:27,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:27,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:27,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:28,486 INFO L124 PetriNetUnfolderBase]: 959/1762 cut-off events. [2024-06-28 00:10:28,487 INFO L125 PetriNetUnfolderBase]: For 302571/302571 co-relation queries the response was YES. [2024-06-28 00:10:28,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11474 conditions, 1762 events. 959/1762 cut-off events. For 302571/302571 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10531 event pairs, 251 based on Foata normal form. 8/1768 useless extension candidates. Maximal degree in co-relation 11289. Up to 1496 conditions per place. [2024-06-28 00:10:28,516 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 343 selfloop transitions, 64 changer transitions 13/422 dead transitions. [2024-06-28 00:10:28,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 422 transitions, 5138 flow [2024-06-28 00:10:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:10:28,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:10:28,517 INFO L175 Difference]: Start difference. First operand has 441 places, 405 transitions, 4226 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:10:28,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 422 transitions, 5138 flow [2024-06-28 00:10:29,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 422 transitions, 5040 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:29,890 INFO L231 Difference]: Finished difference. Result has 439 places, 401 transitions, 4215 flow [2024-06-28 00:10:29,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4215, PETRI_PLACES=439, PETRI_TRANSITIONS=401} [2024-06-28 00:10:29,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 00:10:29,891 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 401 transitions, 4215 flow [2024-06-28 00:10:29,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:29,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:29,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 00:10:29,892 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:29,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash 748893330, now seen corresponding path program 8 times [2024-06-28 00:10:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:29,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034385768] [2024-06-28 00:10:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034385768] [2024-06-28 00:10:32,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034385768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:32,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:32,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:32,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473430613] [2024-06-28 00:10:32,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:32,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:32,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:32,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:32,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 401 transitions, 4215 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:32,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:32,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:32,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:33,274 INFO L124 PetriNetUnfolderBase]: 973/1792 cut-off events. [2024-06-28 00:10:33,274 INFO L125 PetriNetUnfolderBase]: For 382153/382153 co-relation queries the response was YES. [2024-06-28 00:10:33,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12726 conditions, 1792 events. 973/1792 cut-off events. For 382153/382153 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10676 event pairs, 265 based on Foata normal form. 8/1798 useless extension candidates. Maximal degree in co-relation 12541. Up to 1553 conditions per place. [2024-06-28 00:10:33,311 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 365 selfloop transitions, 43 changer transitions 13/423 dead transitions. [2024-06-28 00:10:33,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 423 transitions, 5441 flow [2024-06-28 00:10:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:10:33,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:10:33,312 INFO L175 Difference]: Start difference. First operand has 439 places, 401 transitions, 4215 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:10:33,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 423 transitions, 5441 flow [2024-06-28 00:10:34,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 423 transitions, 5299 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:34,943 INFO L231 Difference]: Finished difference. Result has 436 places, 397 transitions, 4122 flow [2024-06-28 00:10:34,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4122, PETRI_PLACES=436, PETRI_TRANSITIONS=397} [2024-06-28 00:10:34,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2024-06-28 00:10:34,943 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 397 transitions, 4122 flow [2024-06-28 00:10:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:34,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:34,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 00:10:34,944 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 752612400, now seen corresponding path program 9 times [2024-06-28 00:10:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372143579] [2024-06-28 00:10:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:36,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372143579] [2024-06-28 00:10:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372143579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:36,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:36,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:36,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398118349] [2024-06-28 00:10:36,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:36,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:37,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:37,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 397 transitions, 4122 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:37,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:37,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:37,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:37,625 INFO L124 PetriNetUnfolderBase]: 937/1720 cut-off events. [2024-06-28 00:10:37,625 INFO L125 PetriNetUnfolderBase]: For 302509/302509 co-relation queries the response was YES. [2024-06-28 00:10:37,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11252 conditions, 1720 events. 937/1720 cut-off events. For 302509/302509 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10194 event pairs, 247 based on Foata normal form. 8/1726 useless extension candidates. Maximal degree in co-relation 11067. Up to 1451 conditions per place. [2024-06-28 00:10:37,650 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 335 selfloop transitions, 62 changer transitions 15/414 dead transitions. [2024-06-28 00:10:37,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 414 transitions, 5018 flow [2024-06-28 00:10:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:37,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:10:37,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:10:37,651 INFO L175 Difference]: Start difference. First operand has 436 places, 397 transitions, 4122 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:10:37,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 414 transitions, 5018 flow [2024-06-28 00:10:38,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 414 transitions, 4906 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:38,569 INFO L231 Difference]: Finished difference. Result has 432 places, 392 transitions, 4077 flow [2024-06-28 00:10:38,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4077, PETRI_PLACES=432, PETRI_TRANSITIONS=392} [2024-06-28 00:10:38,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 402 predicate places. [2024-06-28 00:10:38,570 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 392 transitions, 4077 flow [2024-06-28 00:10:38,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:38,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:38,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:38,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 00:10:38,570 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -585698000, now seen corresponding path program 10 times [2024-06-28 00:10:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381523175] [2024-06-28 00:10:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381523175] [2024-06-28 00:10:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381523175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:40,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:40,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:40,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826889348] [2024-06-28 00:10:40,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:40,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:40,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:40,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:40,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 392 transitions, 4077 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:40,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:40,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:40,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:41,409 INFO L124 PetriNetUnfolderBase]: 957/1760 cut-off events. [2024-06-28 00:10:41,410 INFO L125 PetriNetUnfolderBase]: For 402030/402030 co-relation queries the response was YES. [2024-06-28 00:10:41,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12790 conditions, 1760 events. 957/1760 cut-off events. For 402030/402030 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10423 event pairs, 254 based on Foata normal form. 8/1766 useless extension candidates. Maximal degree in co-relation 12606. Up to 1168 conditions per place. [2024-06-28 00:10:41,456 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 306 selfloop transitions, 95 changer transitions 15/418 dead transitions. [2024-06-28 00:10:41,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 418 transitions, 5317 flow [2024-06-28 00:10:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-28 00:10:41,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 00:10:41,461 INFO L175 Difference]: Start difference. First operand has 432 places, 392 transitions, 4077 flow. Second operand 12 states and 153 transitions. [2024-06-28 00:10:41,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 418 transitions, 5317 flow [2024-06-28 00:10:43,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 418 transitions, 5111 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 00:10:43,501 INFO L231 Difference]: Finished difference. Result has 424 places, 388 transitions, 4031 flow [2024-06-28 00:10:43,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4031, PETRI_PLACES=424, PETRI_TRANSITIONS=388} [2024-06-28 00:10:43,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-28 00:10:43,501 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 388 transitions, 4031 flow [2024-06-28 00:10:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:43,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:43,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:43,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 00:10:43,502 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:43,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash -581973350, now seen corresponding path program 11 times [2024-06-28 00:10:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:43,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974476681] [2024-06-28 00:10:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974476681] [2024-06-28 00:10:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974476681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:45,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32102599] [2024-06-28 00:10:45,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:45,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:45,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:45,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:45,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 388 transitions, 4031 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:45,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:45,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:45,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:46,770 INFO L124 PetriNetUnfolderBase]: 943/1732 cut-off events. [2024-06-28 00:10:46,770 INFO L125 PetriNetUnfolderBase]: For 421907/421907 co-relation queries the response was YES. [2024-06-28 00:10:46,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12540 conditions, 1732 events. 943/1732 cut-off events. For 421907/421907 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10212 event pairs, 266 based on Foata normal form. 10/1740 useless extension candidates. Maximal degree in co-relation 12358. Up to 1484 conditions per place. [2024-06-28 00:10:46,801 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 314 selfloop transitions, 77 changer transitions 14/407 dead transitions. [2024-06-28 00:10:46,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 407 transitions, 4921 flow [2024-06-28 00:10:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:46,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 00:10:46,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 00:10:46,803 INFO L175 Difference]: Start difference. First operand has 424 places, 388 transitions, 4031 flow. Second operand 12 states and 149 transitions. [2024-06-28 00:10:46,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 407 transitions, 4921 flow [2024-06-28 00:10:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 407 transitions, 4767 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:48,537 INFO L231 Difference]: Finished difference. Result has 421 places, 383 transitions, 3987 flow [2024-06-28 00:10:48,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3987, PETRI_PLACES=421, PETRI_TRANSITIONS=383} [2024-06-28 00:10:48,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-06-28 00:10:48,544 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 383 transitions, 3987 flow [2024-06-28 00:10:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:48,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:48,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 00:10:48,545 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:48,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash -581978930, now seen corresponding path program 12 times [2024-06-28 00:10:48,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:48,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922637441] [2024-06-28 00:10:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:50,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922637441] [2024-06-28 00:10:50,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922637441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:50,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:50,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:10:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422321343] [2024-06-28 00:10:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:50,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:10:50,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:10:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:10:50,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:50,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 383 transitions, 3987 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:50,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:50,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:50,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:51,432 INFO L124 PetriNetUnfolderBase]: 931/1712 cut-off events. [2024-06-28 00:10:51,432 INFO L125 PetriNetUnfolderBase]: For 401484/401484 co-relation queries the response was YES. [2024-06-28 00:10:51,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12487 conditions, 1712 events. 931/1712 cut-off events. For 401484/401484 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10060 event pairs, 256 based on Foata normal form. 8/1718 useless extension candidates. Maximal degree in co-relation 12306. Up to 1281 conditions per place. [2024-06-28 00:10:51,458 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 252 selfloop transitions, 136 changer transitions 12/402 dead transitions. [2024-06-28 00:10:51,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 402 transitions, 4861 flow [2024-06-28 00:10:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:10:51,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:10:51,460 INFO L175 Difference]: Start difference. First operand has 421 places, 383 transitions, 3987 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:10:51,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 402 transitions, 4861 flow [2024-06-28 00:10:53,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 402 transitions, 4701 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:53,144 INFO L231 Difference]: Finished difference. Result has 419 places, 380 transitions, 4073 flow [2024-06-28 00:10:53,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4073, PETRI_PLACES=419, PETRI_TRANSITIONS=380} [2024-06-28 00:10:53,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 389 predicate places. [2024-06-28 00:10:53,144 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 380 transitions, 4073 flow [2024-06-28 00:10:53,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:53,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:53,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 00:10:53,145 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:53,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:53,145 INFO L85 PathProgramCache]: Analyzing trace with hash -582123080, now seen corresponding path program 13 times [2024-06-28 00:10:53,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:53,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481235369] [2024-06-28 00:10:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481235369] [2024-06-28 00:10:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481235369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:10:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784129] [2024-06-28 00:10:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:10:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:10:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:10:55,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:10:55,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 380 transitions, 4073 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:55,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:55,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:10:55,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:56,511 INFO L124 PetriNetUnfolderBase]: 924/1699 cut-off events. [2024-06-28 00:10:56,512 INFO L125 PetriNetUnfolderBase]: For 401874/401874 co-relation queries the response was YES. [2024-06-28 00:10:56,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12539 conditions, 1699 events. 924/1699 cut-off events. For 401874/401874 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9980 event pairs, 248 based on Foata normal form. 8/1705 useless extension candidates. Maximal degree in co-relation 12358. Up to 1263 conditions per place. [2024-06-28 00:10:56,546 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 249 selfloop transitions, 133 changer transitions 16/400 dead transitions. [2024-06-28 00:10:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 400 transitions, 4945 flow [2024-06-28 00:10:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:10:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:10:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:10:56,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:10:56,548 INFO L175 Difference]: Start difference. First operand has 419 places, 380 transitions, 4073 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:10:56,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 400 transitions, 4945 flow [2024-06-28 00:10:58,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 400 transitions, 4665 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:10:58,089 INFO L231 Difference]: Finished difference. Result has 417 places, 375 transitions, 4001 flow [2024-06-28 00:10:58,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3793, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4001, PETRI_PLACES=417, PETRI_TRANSITIONS=375} [2024-06-28 00:10:58,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 00:10:58,090 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 375 transitions, 4001 flow [2024-06-28 00:10:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:10:58,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:58,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:58,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 00:10:58,090 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:10:58,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash -443445200, now seen corresponding path program 14 times [2024-06-28 00:10:58,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:58,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131552137] [2024-06-28 00:10:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:00,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:00,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131552137] [2024-06-28 00:11:00,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131552137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:00,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:00,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:00,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16767077] [2024-06-28 00:11:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:00,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:00,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:00,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:00,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:00,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:00,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 375 transitions, 4001 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:00,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:00,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:00,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:01,416 INFO L124 PetriNetUnfolderBase]: 914/1678 cut-off events. [2024-06-28 00:11:01,416 INFO L125 PetriNetUnfolderBase]: For 421926/421926 co-relation queries the response was YES. [2024-06-28 00:11:01,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12402 conditions, 1678 events. 914/1678 cut-off events. For 421926/421926 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9798 event pairs, 258 based on Foata normal form. 10/1686 useless extension candidates. Maximal degree in co-relation 12221. Up to 1495 conditions per place. [2024-06-28 00:11:01,447 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 324 selfloop transitions, 56 changer transitions 12/394 dead transitions. [2024-06-28 00:11:01,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 394 transitions, 4867 flow [2024-06-28 00:11:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-28 00:11:01,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-28 00:11:01,448 INFO L175 Difference]: Start difference. First operand has 417 places, 375 transitions, 4001 flow. Second operand 12 states and 146 transitions. [2024-06-28 00:11:01,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 394 transitions, 4867 flow [2024-06-28 00:11:02,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 394 transitions, 4585 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:02,865 INFO L231 Difference]: Finished difference. Result has 412 places, 371 transitions, 3788 flow [2024-06-28 00:11:02,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3719, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3788, PETRI_PLACES=412, PETRI_TRANSITIONS=371} [2024-06-28 00:11:02,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 00:11:02,866 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 371 transitions, 3788 flow [2024-06-28 00:11:02,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:02,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:02,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:02,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 00:11:02,867 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:02,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:02,867 INFO L85 PathProgramCache]: Analyzing trace with hash -437873074, now seen corresponding path program 1 times [2024-06-28 00:11:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:02,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612297880] [2024-06-28 00:11:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:05,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612297880] [2024-06-28 00:11:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612297880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:05,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:05,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502673960] [2024-06-28 00:11:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:05,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:05,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:05,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 371 transitions, 3788 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:05,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:05,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:05,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:05,946 INFO L124 PetriNetUnfolderBase]: 894/1638 cut-off events. [2024-06-28 00:11:05,946 INFO L125 PetriNetUnfolderBase]: For 342016/342016 co-relation queries the response was YES. [2024-06-28 00:11:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12036 conditions, 1638 events. 894/1638 cut-off events. For 342016/342016 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9551 event pairs, 253 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 11856. Up to 1419 conditions per place. [2024-06-28 00:11:05,977 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 307 selfloop transitions, 75 changer transitions 0/384 dead transitions. [2024-06-28 00:11:05,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 384 transitions, 4596 flow [2024-06-28 00:11:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:11:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:11:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 00:11:05,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 00:11:05,979 INFO L175 Difference]: Start difference. First operand has 412 places, 371 transitions, 3788 flow. Second operand 10 states and 123 transitions. [2024-06-28 00:11:05,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 384 transitions, 4596 flow [2024-06-28 00:11:07,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 384 transitions, 4478 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:07,326 INFO L231 Difference]: Finished difference. Result has 409 places, 372 transitions, 3840 flow [2024-06-28 00:11:07,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3840, PETRI_PLACES=409, PETRI_TRANSITIONS=372} [2024-06-28 00:11:07,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:11:07,327 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 372 transitions, 3840 flow [2024-06-28 00:11:07,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:07,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:07,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 00:11:07,327 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:07,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash 621755530, now seen corresponding path program 2 times [2024-06-28 00:11:07,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:07,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527751300] [2024-06-28 00:11:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:07,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527751300] [2024-06-28 00:11:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527751300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:09,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:09,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:09,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392141447] [2024-06-28 00:11:09,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:09,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:09,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:09,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:09,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:09,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 372 transitions, 3840 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:09,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:09,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:09,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:10,114 INFO L124 PetriNetUnfolderBase]: 898/1646 cut-off events. [2024-06-28 00:11:10,114 INFO L125 PetriNetUnfolderBase]: For 342338/342338 co-relation queries the response was YES. [2024-06-28 00:11:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12124 conditions, 1646 events. 898/1646 cut-off events. For 342338/342338 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9589 event pairs, 253 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 11944. Up to 1427 conditions per place. [2024-06-28 00:11:10,136 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 315 selfloop transitions, 67 changer transitions 0/384 dead transitions. [2024-06-28 00:11:10,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 384 transitions, 4646 flow [2024-06-28 00:11:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:10,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 00:11:10,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 00:11:10,137 INFO L175 Difference]: Start difference. First operand has 409 places, 372 transitions, 3840 flow. Second operand 11 states and 128 transitions. [2024-06-28 00:11:10,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 384 transitions, 4646 flow [2024-06-28 00:11:11,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 384 transitions, 4485 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:11,498 INFO L231 Difference]: Finished difference. Result has 412 places, 373 transitions, 3835 flow [2024-06-28 00:11:11,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3835, PETRI_PLACES=412, PETRI_TRANSITIONS=373} [2024-06-28 00:11:11,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 00:11:11,506 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 373 transitions, 3835 flow [2024-06-28 00:11:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:11,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:11,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 00:11:11,506 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:11,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -443450780, now seen corresponding path program 15 times [2024-06-28 00:11:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:11,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008227425] [2024-06-28 00:11:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:11,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008227425] [2024-06-28 00:11:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008227425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:13,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:13,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827556616] [2024-06-28 00:11:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:13,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:13,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:13,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 373 transitions, 3835 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:13,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:13,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:13,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:14,709 INFO L124 PetriNetUnfolderBase]: 910/1674 cut-off events. [2024-06-28 00:11:14,709 INFO L125 PetriNetUnfolderBase]: For 406947/406947 co-relation queries the response was YES. [2024-06-28 00:11:14,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 1674 events. 910/1674 cut-off events. For 406947/406947 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9809 event pairs, 256 based on Foata normal form. 8/1680 useless extension candidates. Maximal degree in co-relation 12057. Up to 1501 conditions per place. [2024-06-28 00:11:14,740 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 324 selfloop transitions, 54 changer transitions 11/391 dead transitions. [2024-06-28 00:11:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 391 transitions, 4681 flow [2024-06-28 00:11:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 00:11:14,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 00:11:14,742 INFO L175 Difference]: Start difference. First operand has 412 places, 373 transitions, 3835 flow. Second operand 12 states and 143 transitions. [2024-06-28 00:11:14,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 391 transitions, 4681 flow [2024-06-28 00:11:16,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 391 transitions, 4560 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:16,075 INFO L231 Difference]: Finished difference. Result has 417 places, 370 transitions, 3795 flow [2024-06-28 00:11:16,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3795, PETRI_PLACES=417, PETRI_TRANSITIONS=370} [2024-06-28 00:11:16,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2024-06-28 00:11:16,075 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 370 transitions, 3795 flow [2024-06-28 00:11:16,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:16,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 00:11:16,076 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:16,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:16,077 INFO L85 PathProgramCache]: Analyzing trace with hash -437881010, now seen corresponding path program 16 times [2024-06-28 00:11:16,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:16,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184220034] [2024-06-28 00:11:16,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:16,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184220034] [2024-06-28 00:11:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184220034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:18,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473684835] [2024-06-28 00:11:18,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:18,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:18,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:18,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 370 transitions, 3795 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:18,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:18,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:18,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:19,124 INFO L124 PetriNetUnfolderBase]: 907/1669 cut-off events. [2024-06-28 00:11:19,124 INFO L125 PetriNetUnfolderBase]: For 433037/433037 co-relation queries the response was YES. [2024-06-28 00:11:19,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12208 conditions, 1669 events. 907/1669 cut-off events. For 433037/433037 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9772 event pairs, 263 based on Foata normal form. 10/1677 useless extension candidates. Maximal degree in co-relation 12026. Up to 1406 conditions per place. [2024-06-28 00:11:19,147 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 302 selfloop transitions, 72 changer transitions 12/388 dead transitions. [2024-06-28 00:11:19,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 388 transitions, 4647 flow [2024-06-28 00:11:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 00:11:19,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 00:11:19,148 INFO L175 Difference]: Start difference. First operand has 417 places, 370 transitions, 3795 flow. Second operand 12 states and 142 transitions. [2024-06-28 00:11:19,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 388 transitions, 4647 flow [2024-06-28 00:11:20,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 388 transitions, 4531 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:11:20,179 INFO L231 Difference]: Finished difference. Result has 415 places, 366 transitions, 3775 flow [2024-06-28 00:11:20,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3775, PETRI_PLACES=415, PETRI_TRANSITIONS=366} [2024-06-28 00:11:20,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2024-06-28 00:11:20,180 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 366 transitions, 3775 flow [2024-06-28 00:11:20,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:20,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:20,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:20,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 00:11:20,180 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:20,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash -438088400, now seen corresponding path program 17 times [2024-06-28 00:11:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124615009] [2024-06-28 00:11:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124615009] [2024-06-28 00:11:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124615009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:21,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401115218] [2024-06-28 00:11:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:22,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:22,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 366 transitions, 3775 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:22,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:22,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:22,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:22,999 INFO L124 PetriNetUnfolderBase]: 922/1706 cut-off events. [2024-06-28 00:11:23,000 INFO L125 PetriNetUnfolderBase]: For 515918/515918 co-relation queries the response was YES. [2024-06-28 00:11:23,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13778 conditions, 1706 events. 922/1706 cut-off events. For 515918/515918 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10071 event pairs, 267 based on Foata normal form. 8/1712 useless extension candidates. Maximal degree in co-relation 13596. Up to 1474 conditions per place. [2024-06-28 00:11:23,032 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 327 selfloop transitions, 53 changer transitions 7/389 dead transitions. [2024-06-28 00:11:23,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 389 transitions, 4949 flow [2024-06-28 00:11:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 00:11:23,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:11:23,034 INFO L175 Difference]: Start difference. First operand has 415 places, 366 transitions, 3775 flow. Second operand 12 states and 147 transitions. [2024-06-28 00:11:23,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 389 transitions, 4949 flow [2024-06-28 00:11:24,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 389 transitions, 4790 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:11:24,729 INFO L231 Difference]: Finished difference. Result has 414 places, 364 transitions, 3704 flow [2024-06-28 00:11:24,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3704, PETRI_PLACES=414, PETRI_TRANSITIONS=364} [2024-06-28 00:11:24,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 00:11:24,730 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 364 transitions, 3704 flow [2024-06-28 00:11:24,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:24,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:24,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 00:11:24,731 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:24,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash -438082820, now seen corresponding path program 18 times [2024-06-28 00:11:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:24,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904417283] [2024-06-28 00:11:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:24,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:27,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:27,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904417283] [2024-06-28 00:11:27,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904417283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:27,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:27,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901936135] [2024-06-28 00:11:27,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:27,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:27,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:27,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:27,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:27,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:27,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 364 transitions, 3704 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:27,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:27,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:27,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:28,422 INFO L124 PetriNetUnfolderBase]: 891/1645 cut-off events. [2024-06-28 00:11:28,423 INFO L125 PetriNetUnfolderBase]: For 433766/433766 co-relation queries the response was YES. [2024-06-28 00:11:28,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12054 conditions, 1645 events. 891/1645 cut-off events. For 433766/433766 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9624 event pairs, 259 based on Foata normal form. 10/1653 useless extension candidates. Maximal degree in co-relation 11872. Up to 1375 conditions per place. [2024-06-28 00:11:28,454 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 297 selfloop transitions, 72 changer transitions 12/383 dead transitions. [2024-06-28 00:11:28,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 383 transitions, 4546 flow [2024-06-28 00:11:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:11:28,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:11:28,456 INFO L175 Difference]: Start difference. First operand has 414 places, 364 transitions, 3704 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:11:28,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 383 transitions, 4546 flow [2024-06-28 00:11:30,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 383 transitions, 4439 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:30,090 INFO L231 Difference]: Finished difference. Result has 414 places, 359 transitions, 3679 flow [2024-06-28 00:11:30,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3679, PETRI_PLACES=414, PETRI_TRANSITIONS=359} [2024-06-28 00:11:30,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 00:11:30,091 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 359 transitions, 3679 flow [2024-06-28 00:11:30,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:30,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:30,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 00:11:30,092 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:30,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash 621764830, now seen corresponding path program 3 times [2024-06-28 00:11:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:30,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407260776] [2024-06-28 00:11:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407260776] [2024-06-28 00:11:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407260776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:32,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:11:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090762446] [2024-06-28 00:11:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:11:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:11:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:11:32,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:32,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 359 transitions, 3679 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:32,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:32,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:32,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:33,150 INFO L124 PetriNetUnfolderBase]: 877/1615 cut-off events. [2024-06-28 00:11:33,150 INFO L125 PetriNetUnfolderBase]: For 372740/372740 co-relation queries the response was YES. [2024-06-28 00:11:33,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12268 conditions, 1615 events. 877/1615 cut-off events. For 372740/372740 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9419 event pairs, 258 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 12086. Up to 1349 conditions per place. [2024-06-28 00:11:33,181 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 66 changer transitions 0/374 dead transitions. [2024-06-28 00:11:33,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 374 transitions, 4777 flow [2024-06-28 00:11:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:11:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:11:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 00:11:33,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 00:11:33,183 INFO L175 Difference]: Start difference. First operand has 414 places, 359 transitions, 3679 flow. Second operand 11 states and 129 transitions. [2024-06-28 00:11:33,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 374 transitions, 4777 flow [2024-06-28 00:11:34,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 374 transitions, 4617 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:34,602 INFO L231 Difference]: Finished difference. Result has 410 places, 361 transitions, 3696 flow [2024-06-28 00:11:34,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3696, PETRI_PLACES=410, PETRI_TRANSITIONS=361} [2024-06-28 00:11:34,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 00:11:34,602 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 361 transitions, 3696 flow [2024-06-28 00:11:34,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:34,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:34,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:34,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 00:11:34,603 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -443594930, now seen corresponding path program 19 times [2024-06-28 00:11:34,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:34,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31785734] [2024-06-28 00:11:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:36,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31785734] [2024-06-28 00:11:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31785734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:36,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964423713] [2024-06-28 00:11:36,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:36,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:37,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:37,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 361 transitions, 3696 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:37,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:37,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:37,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:37,861 INFO L124 PetriNetUnfolderBase]: 889/1643 cut-off events. [2024-06-28 00:11:37,861 INFO L125 PetriNetUnfolderBase]: For 433656/433656 co-relation queries the response was YES. [2024-06-28 00:11:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12373 conditions, 1643 events. 889/1643 cut-off events. For 433656/433656 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9632 event pairs, 254 based on Foata normal form. 8/1649 useless extension candidates. Maximal degree in co-relation 12191. Up to 1381 conditions per place. [2024-06-28 00:11:37,890 INFO L140 encePairwiseOnDemand]: 17/31 looper letters, 295 selfloop transitions, 68 changer transitions 14/379 dead transitions. [2024-06-28 00:11:37,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 379 transitions, 4516 flow [2024-06-28 00:11:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 00:11:37,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:11:37,892 INFO L175 Difference]: Start difference. First operand has 410 places, 361 transitions, 3696 flow. Second operand 12 states and 141 transitions. [2024-06-28 00:11:37,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 379 transitions, 4516 flow [2024-06-28 00:11:39,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 379 transitions, 4408 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:39,434 INFO L231 Difference]: Finished difference. Result has 414 places, 357 transitions, 3683 flow [2024-06-28 00:11:39,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3683, PETRI_PLACES=414, PETRI_TRANSITIONS=357} [2024-06-28 00:11:39,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 00:11:39,435 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 357 transitions, 3683 flow [2024-06-28 00:11:39,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:39,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:39,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:39,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 00:11:39,436 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:39,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash 420191484, now seen corresponding path program 20 times [2024-06-28 00:11:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:39,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241195567] [2024-06-28 00:11:39,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:39,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241195567] [2024-06-28 00:11:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241195567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:41,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174071641] [2024-06-28 00:11:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:41,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:41,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 357 transitions, 3683 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:41,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:41,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:41,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:42,647 INFO L124 PetriNetUnfolderBase]: 907/1681 cut-off events. [2024-06-28 00:11:42,648 INFO L125 PetriNetUnfolderBase]: For 537215/537215 co-relation queries the response was YES. [2024-06-28 00:11:42,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13925 conditions, 1681 events. 907/1681 cut-off events. For 537215/537215 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9857 event pairs, 268 based on Foata normal form. 8/1687 useless extension candidates. Maximal degree in co-relation 13742. Up to 1449 conditions per place. [2024-06-28 00:11:42,671 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 326 selfloop transitions, 44 changer transitions 7/379 dead transitions. [2024-06-28 00:11:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 379 transitions, 4827 flow [2024-06-28 00:11:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:11:42,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:11:42,672 INFO L175 Difference]: Start difference. First operand has 414 places, 357 transitions, 3683 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:11:42,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 379 transitions, 4827 flow [2024-06-28 00:11:44,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 379 transitions, 4679 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:44,159 INFO L231 Difference]: Finished difference. Result has 411 places, 355 transitions, 3605 flow [2024-06-28 00:11:44,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3605, PETRI_PLACES=411, PETRI_TRANSITIONS=355} [2024-06-28 00:11:44,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:11:44,160 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 355 transitions, 3605 flow [2024-06-28 00:11:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:44,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:44,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:44,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 00:11:44,161 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:44,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash 621488124, now seen corresponding path program 21 times [2024-06-28 00:11:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:44,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606090165] [2024-06-28 00:11:44,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:45,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606090165] [2024-06-28 00:11:45,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606090165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:45,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:45,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836297406] [2024-06-28 00:11:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:45,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:46,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 355 transitions, 3605 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:46,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:46,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:46,849 INFO L124 PetriNetUnfolderBase]: 905/1679 cut-off events. [2024-06-28 00:11:46,849 INFO L125 PetriNetUnfolderBase]: For 557433/557433 co-relation queries the response was YES. [2024-06-28 00:11:46,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13850 conditions, 1679 events. 905/1679 cut-off events. For 557433/557433 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9891 event pairs, 277 based on Foata normal form. 10/1687 useless extension candidates. Maximal degree in co-relation 13667. Up to 1416 conditions per place. [2024-06-28 00:11:46,871 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 298 selfloop transitions, 60 changer transitions 12/372 dead transitions. [2024-06-28 00:11:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 372 transitions, 4417 flow [2024-06-28 00:11:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 00:11:46,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:11:46,873 INFO L175 Difference]: Start difference. First operand has 411 places, 355 transitions, 3605 flow. Second operand 12 states and 141 transitions. [2024-06-28 00:11:46,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 372 transitions, 4417 flow [2024-06-28 00:11:48,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 372 transitions, 4328 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:48,347 INFO L231 Difference]: Finished difference. Result has 411 places, 351 transitions, 3588 flow [2024-06-28 00:11:48,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3516, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3588, PETRI_PLACES=411, PETRI_TRANSITIONS=351} [2024-06-28 00:11:48,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:11:48,348 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 351 transitions, 3588 flow [2024-06-28 00:11:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:48,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 00:11:48,349 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:48,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 614130894, now seen corresponding path program 22 times [2024-06-28 00:11:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069484926] [2024-06-28 00:11:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:50,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:50,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069484926] [2024-06-28 00:11:50,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069484926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:50,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:50,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:50,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023590691] [2024-06-28 00:11:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:50,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:50,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:50,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:50,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 351 transitions, 3588 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:50,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:50,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:50,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:51,109 INFO L124 PetriNetUnfolderBase]: 920/1716 cut-off events. [2024-06-28 00:11:51,109 INFO L125 PetriNetUnfolderBase]: For 639933/639933 co-relation queries the response was YES. [2024-06-28 00:11:51,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15418 conditions, 1716 events. 920/1716 cut-off events. For 639933/639933 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10178 event pairs, 287 based on Foata normal form. 8/1722 useless extension candidates. Maximal degree in co-relation 15235. Up to 1484 conditions per place. [2024-06-28 00:11:51,135 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 319 selfloop transitions, 45 changer transitions 7/373 dead transitions. [2024-06-28 00:11:51,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 373 transitions, 4720 flow [2024-06-28 00:11:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 00:11:51,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 00:11:51,136 INFO L175 Difference]: Start difference. First operand has 411 places, 351 transitions, 3588 flow. Second operand 12 states and 144 transitions. [2024-06-28 00:11:51,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 373 transitions, 4720 flow [2024-06-28 00:11:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 373 transitions, 4588 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:53,125 INFO L231 Difference]: Finished difference. Result has 411 places, 349 transitions, 3527 flow [2024-06-28 00:11:53,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3527, PETRI_PLACES=411, PETRI_TRANSITIONS=349} [2024-06-28 00:11:53,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:11:53,126 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 349 transitions, 3527 flow [2024-06-28 00:11:53,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:53,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:53,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:53,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 00:11:53,126 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:53,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:53,127 INFO L85 PathProgramCache]: Analyzing trace with hash 414829104, now seen corresponding path program 23 times [2024-06-28 00:11:53,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:53,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146227913] [2024-06-28 00:11:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:53,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:54,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146227913] [2024-06-28 00:11:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146227913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:54,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:11:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613184588] [2024-06-28 00:11:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:11:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:11:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:11:55,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 349 transitions, 3527 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:55,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:55,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:55,811 INFO L124 PetriNetUnfolderBase]: 943/1765 cut-off events. [2024-06-28 00:11:55,812 INFO L125 PetriNetUnfolderBase]: For 742575/742575 co-relation queries the response was YES. [2024-06-28 00:11:55,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16974 conditions, 1765 events. 943/1765 cut-off events. For 742575/742575 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10543 event pairs, 300 based on Foata normal form. 8/1771 useless extension candidates. Maximal degree in co-relation 16791. Up to 1512 conditions per place. [2024-06-28 00:11:55,837 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 312 selfloop transitions, 51 changer transitions 7/372 dead transitions. [2024-06-28 00:11:55,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 372 transitions, 4661 flow [2024-06-28 00:11:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:11:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:11:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 00:11:55,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 00:11:55,839 INFO L175 Difference]: Start difference. First operand has 411 places, 349 transitions, 3527 flow. Second operand 12 states and 147 transitions. [2024-06-28 00:11:55,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 372 transitions, 4661 flow [2024-06-28 00:11:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 372 transitions, 4568 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:57,815 INFO L231 Difference]: Finished difference. Result has 411 places, 347 transitions, 3519 flow [2024-06-28 00:11:57,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3519, PETRI_PLACES=411, PETRI_TRANSITIONS=347} [2024-06-28 00:11:57,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:11:57,816 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 347 transitions, 3519 flow [2024-06-28 00:11:57,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:57,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:57,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:57,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 00:11:57,817 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:11:57,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash 614136474, now seen corresponding path program 24 times [2024-06-28 00:11:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:57,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914046737] [2024-06-28 00:11:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:11:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914046737] [2024-06-28 00:11:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914046737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:11:59,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42589258] [2024-06-28 00:11:59,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:11:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:11:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:11:59,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:11:59,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 347 transitions, 3519 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:11:59,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:59,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:11:59,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:00,679 INFO L124 PetriNetUnfolderBase]: 916/1712 cut-off events. [2024-06-28 00:12:00,679 INFO L125 PetriNetUnfolderBase]: For 681466/681466 co-relation queries the response was YES. [2024-06-28 00:12:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15364 conditions, 1712 events. 916/1712 cut-off events. For 681466/681466 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10181 event pairs, 284 based on Foata normal form. 12/1722 useless extension candidates. Maximal degree in co-relation 15181. Up to 1434 conditions per place. [2024-06-28 00:12:00,704 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 294 selfloop transitions, 60 changer transitions 11/367 dead transitions. [2024-06-28 00:12:00,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 367 transitions, 4341 flow [2024-06-28 00:12:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-28 00:12:00,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40053763440860213 [2024-06-28 00:12:00,705 INFO L175 Difference]: Start difference. First operand has 411 places, 347 transitions, 3519 flow. Second operand 12 states and 149 transitions. [2024-06-28 00:12:00,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 367 transitions, 4341 flow [2024-06-28 00:12:02,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 367 transitions, 4238 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:02,343 INFO L231 Difference]: Finished difference. Result has 411 places, 343 transitions, 3487 flow [2024-06-28 00:12:02,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3487, PETRI_PLACES=411, PETRI_TRANSITIONS=343} [2024-06-28 00:12:02,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 00:12:02,344 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 343 transitions, 3487 flow [2024-06-28 00:12:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:02,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:02,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 00:12:02,344 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:02,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 614338284, now seen corresponding path program 25 times [2024-06-28 00:12:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197130027] [2024-06-28 00:12:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:04,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197130027] [2024-06-28 00:12:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197130027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:04,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446945754] [2024-06-28 00:12:04,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:04,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:04,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 343 transitions, 3487 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:04,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:04,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:04,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:05,152 INFO L124 PetriNetUnfolderBase]: 907/1697 cut-off events. [2024-06-28 00:12:05,153 INFO L125 PetriNetUnfolderBase]: For 660826/660826 co-relation queries the response was YES. [2024-06-28 00:12:05,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 1697 events. 907/1697 cut-off events. For 660826/660826 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 10035 event pairs, 290 based on Foata normal form. 10/1705 useless extension candidates. Maximal degree in co-relation 15111. Up to 1434 conditions per place. [2024-06-28 00:12:05,175 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 291 selfloop transitions, 55 changer transitions 12/360 dead transitions. [2024-06-28 00:12:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 360 transitions, 4275 flow [2024-06-28 00:12:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 00:12:05,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 00:12:05,180 INFO L175 Difference]: Start difference. First operand has 411 places, 343 transitions, 3487 flow. Second operand 12 states and 142 transitions. [2024-06-28 00:12:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 360 transitions, 4275 flow [2024-06-28 00:12:06,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 360 transitions, 4131 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:06,848 INFO L231 Difference]: Finished difference. Result has 410 places, 339 transitions, 3404 flow [2024-06-28 00:12:06,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3404, PETRI_PLACES=410, PETRI_TRANSITIONS=339} [2024-06-28 00:12:06,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 00:12:06,849 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 339 transitions, 3404 flow [2024-06-28 00:12:06,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:06,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:06,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:06,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 00:12:06,850 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:06,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash 420197064, now seen corresponding path program 26 times [2024-06-28 00:12:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998538228] [2024-06-28 00:12:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998538228] [2024-06-28 00:12:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998538228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:08,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:08,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279118655] [2024-06-28 00:12:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:08,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:08,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:08,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:08,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:08,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 339 transitions, 3404 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:08,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:08,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:09,690 INFO L124 PetriNetUnfolderBase]: 865/1619 cut-off events. [2024-06-28 00:12:09,691 INFO L125 PetriNetUnfolderBase]: For 566069/566069 co-relation queries the response was YES. [2024-06-28 00:12:09,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13237 conditions, 1619 events. 865/1619 cut-off events. For 566069/566069 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9516 event pairs, 276 based on Foata normal form. 12/1629 useless extension candidates. Maximal degree in co-relation 13053. Up to 1349 conditions per place. [2024-06-28 00:12:09,712 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 289 selfloop transitions, 54 changer transitions 12/357 dead transitions. [2024-06-28 00:12:09,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 357 transitions, 4186 flow [2024-06-28 00:12:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 00:12:09,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 00:12:09,714 INFO L175 Difference]: Start difference. First operand has 410 places, 339 transitions, 3404 flow. Second operand 12 states and 145 transitions. [2024-06-28 00:12:09,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 357 transitions, 4186 flow [2024-06-28 00:12:11,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 357 transitions, 4062 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:11,026 INFO L231 Difference]: Finished difference. Result has 409 places, 334 transitions, 3324 flow [2024-06-28 00:12:11,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3324, PETRI_PLACES=409, PETRI_TRANSITIONS=334} [2024-06-28 00:12:11,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 00:12:11,027 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 334 transitions, 3324 flow [2024-06-28 00:12:11,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:11,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:11,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:11,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 00:12:11,028 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:11,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 414834684, now seen corresponding path program 27 times [2024-06-28 00:12:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:11,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995813299] [2024-06-28 00:12:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995813299] [2024-06-28 00:12:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995813299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:12,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:12,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288121593] [2024-06-28 00:12:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:12,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:12,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 334 transitions, 3324 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:12,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:12,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:12,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:13,477 INFO L124 PetriNetUnfolderBase]: 827/1545 cut-off events. [2024-06-28 00:12:13,478 INFO L125 PetriNetUnfolderBase]: For 440747/440747 co-relation queries the response was YES. [2024-06-28 00:12:13,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11457 conditions, 1545 events. 827/1545 cut-off events. For 440747/440747 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8980 event pairs, 264 based on Foata normal form. 10/1553 useless extension candidates. Maximal degree in co-relation 11273. Up to 1371 conditions per place. [2024-06-28 00:12:13,498 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 296 selfloop transitions, 39 changer transitions 14/351 dead transitions. [2024-06-28 00:12:13,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 351 transitions, 4092 flow [2024-06-28 00:12:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-28 00:12:13,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 00:12:13,499 INFO L175 Difference]: Start difference. First operand has 409 places, 334 transitions, 3324 flow. Second operand 12 states and 138 transitions. [2024-06-28 00:12:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 351 transitions, 4092 flow [2024-06-28 00:12:14,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 351 transitions, 3868 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:14,646 INFO L231 Difference]: Finished difference. Result has 404 places, 329 transitions, 3131 flow [2024-06-28 00:12:14,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3131, PETRI_PLACES=404, PETRI_TRANSITIONS=329} [2024-06-28 00:12:14,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2024-06-28 00:12:14,646 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 329 transitions, 3131 flow [2024-06-28 00:12:14,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:14,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:14,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 00:12:14,647 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:14,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash 414684954, now seen corresponding path program 28 times [2024-06-28 00:12:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:14,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839399607] [2024-06-28 00:12:14,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839399607] [2024-06-28 00:12:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839399607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582529752] [2024-06-28 00:12:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:16,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:16,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 329 transitions, 3131 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:16,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:16,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:16,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:17,391 INFO L124 PetriNetUnfolderBase]: 814/1522 cut-off events. [2024-06-28 00:12:17,391 INFO L125 PetriNetUnfolderBase]: For 420784/420784 co-relation queries the response was YES. [2024-06-28 00:12:17,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11173 conditions, 1522 events. 814/1522 cut-off events. For 420784/420784 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8834 event pairs, 251 based on Foata normal form. 8/1528 useless extension candidates. Maximal degree in co-relation 10989. Up to 1260 conditions per place. [2024-06-28 00:12:17,432 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 280 selfloop transitions, 50 changer transitions 14/346 dead transitions. [2024-06-28 00:12:17,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 346 transitions, 3877 flow [2024-06-28 00:12:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:12:17,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:12:17,440 INFO L175 Difference]: Start difference. First operand has 404 places, 329 transitions, 3131 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:12:17,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 346 transitions, 3877 flow [2024-06-28 00:12:18,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 346 transitions, 3716 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:18,744 INFO L231 Difference]: Finished difference. Result has 399 places, 325 transitions, 3030 flow [2024-06-28 00:12:18,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3030, PETRI_PLACES=399, PETRI_TRANSITIONS=325} [2024-06-28 00:12:18,745 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 00:12:18,745 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 325 transitions, 3030 flow [2024-06-28 00:12:18,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:18,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:18,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 00:12:18,746 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:18,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1722023940, now seen corresponding path program 29 times [2024-06-28 00:12:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:18,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517661078] [2024-06-28 00:12:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:20,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:20,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517661078] [2024-06-28 00:12:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517661078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:20,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434520076] [2024-06-28 00:12:20,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:20,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:20,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 325 transitions, 3030 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:20,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:20,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:21,560 INFO L124 PetriNetUnfolderBase]: 807/1508 cut-off events. [2024-06-28 00:12:21,560 INFO L125 PetriNetUnfolderBase]: For 442147/442147 co-relation queries the response was YES. [2024-06-28 00:12:21,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1508 events. 807/1508 cut-off events. For 442147/442147 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8692 event pairs, 258 based on Foata normal form. 10/1516 useless extension candidates. Maximal degree in co-relation 10778. Up to 1423 conditions per place. [2024-06-28 00:12:21,587 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 307 selfloop transitions, 20 changer transitions 12/341 dead transitions. [2024-06-28 00:12:21,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 341 transitions, 3770 flow [2024-06-28 00:12:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:12:21,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:12:21,589 INFO L175 Difference]: Start difference. First operand has 399 places, 325 transitions, 3030 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:12:21,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 341 transitions, 3770 flow [2024-06-28 00:12:23,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 341 transitions, 3614 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:23,282 INFO L231 Difference]: Finished difference. Result has 393 places, 321 transitions, 2884 flow [2024-06-28 00:12:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2884, PETRI_PLACES=393, PETRI_TRANSITIONS=321} [2024-06-28 00:12:23,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 00:12:23,297 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 321 transitions, 2884 flow [2024-06-28 00:12:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:23,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:23,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 00:12:23,297 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:23,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1722029520, now seen corresponding path program 30 times [2024-06-28 00:12:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:23,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691669257] [2024-06-28 00:12:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691669257] [2024-06-28 00:12:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691669257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:24,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640086748] [2024-06-28 00:12:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:25,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:25,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 321 transitions, 2884 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:25,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:25,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:25,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:25,912 INFO L124 PetriNetUnfolderBase]: 817/1534 cut-off events. [2024-06-28 00:12:25,913 INFO L125 PetriNetUnfolderBase]: For 504343/504343 co-relation queries the response was YES. [2024-06-28 00:12:25,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 1534 events. 817/1534 cut-off events. For 504343/504343 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8880 event pairs, 264 based on Foata normal form. 8/1540 useless extension candidates. Maximal degree in co-relation 11828. Up to 1397 conditions per place. [2024-06-28 00:12:25,941 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 305 selfloop transitions, 25 changer transitions 8/340 dead transitions. [2024-06-28 00:12:25,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 340 transitions, 3932 flow [2024-06-28 00:12:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 00:12:25,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 00:12:25,942 INFO L175 Difference]: Start difference. First operand has 393 places, 321 transitions, 2884 flow. Second operand 12 states and 134 transitions. [2024-06-28 00:12:25,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 340 transitions, 3932 flow [2024-06-28 00:12:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 340 transitions, 3851 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:27,576 INFO L231 Difference]: Finished difference. Result has 391 places, 318 transitions, 2828 flow [2024-06-28 00:12:27,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2828, PETRI_PLACES=391, PETRI_TRANSITIONS=318} [2024-06-28 00:12:27,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:12:27,577 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 318 transitions, 2828 flow [2024-06-28 00:12:27,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:27,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:27,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:27,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 00:12:27,577 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:27,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1721822130, now seen corresponding path program 31 times [2024-06-28 00:12:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889814451] [2024-06-28 00:12:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:29,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889814451] [2024-06-28 00:12:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889814451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156778131] [2024-06-28 00:12:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:29,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:29,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 318 transitions, 2828 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:29,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:29,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:29,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:30,210 INFO L124 PetriNetUnfolderBase]: 814/1529 cut-off events. [2024-06-28 00:12:30,211 INFO L125 PetriNetUnfolderBase]: For 517828/517828 co-relation queries the response was YES. [2024-06-28 00:12:30,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11926 conditions, 1529 events. 814/1529 cut-off events. For 517828/517828 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8848 event pairs, 268 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 11748. Up to 1417 conditions per place. [2024-06-28 00:12:30,229 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 298 selfloop transitions, 25 changer transitions 12/337 dead transitions. [2024-06-28 00:12:30,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 337 transitions, 3592 flow [2024-06-28 00:12:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 00:12:30,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 00:12:30,230 INFO L175 Difference]: Start difference. First operand has 391 places, 318 transitions, 2828 flow. Second operand 11 states and 126 transitions. [2024-06-28 00:12:30,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 337 transitions, 3592 flow [2024-06-28 00:12:31,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 337 transitions, 3538 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:12:31,691 INFO L231 Difference]: Finished difference. Result has 387 places, 314 transitions, 2784 flow [2024-06-28 00:12:31,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2784, PETRI_PLACES=387, PETRI_TRANSITIONS=314} [2024-06-28 00:12:31,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:31,692 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 314 transitions, 2784 flow [2024-06-28 00:12:31,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:31,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 00:12:31,692 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:31,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash 616272550, now seen corresponding path program 32 times [2024-06-28 00:12:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666989819] [2024-06-28 00:12:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666989819] [2024-06-28 00:12:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666989819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:33,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898320232] [2024-06-28 00:12:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:33,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:33,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:33,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 314 transitions, 2784 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:33,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:33,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:33,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:34,585 INFO L124 PetriNetUnfolderBase]: 804/1515 cut-off events. [2024-06-28 00:12:34,585 INFO L125 PetriNetUnfolderBase]: For 503586/503586 co-relation queries the response was YES. [2024-06-28 00:12:34,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11768 conditions, 1515 events. 804/1515 cut-off events. For 503586/503586 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8781 event pairs, 262 based on Foata normal form. 10/1523 useless extension candidates. Maximal degree in co-relation 11592. Up to 1403 conditions per place. [2024-06-28 00:12:34,604 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 298 selfloop transitions, 21 changer transitions 12/333 dead transitions. [2024-06-28 00:12:34,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 333 transitions, 3540 flow [2024-06-28 00:12:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:34,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 00:12:34,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 00:12:34,606 INFO L175 Difference]: Start difference. First operand has 387 places, 314 transitions, 2784 flow. Second operand 12 states and 131 transitions. [2024-06-28 00:12:34,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 333 transitions, 3540 flow [2024-06-28 00:12:36,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 333 transitions, 3486 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:12:36,045 INFO L231 Difference]: Finished difference. Result has 386 places, 310 transitions, 2732 flow [2024-06-28 00:12:36,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2732, PETRI_PLACES=386, PETRI_TRANSITIONS=310} [2024-06-28 00:12:36,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:12:36,046 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 310 transitions, 2732 flow [2024-06-28 00:12:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:36,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:36,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 00:12:36,047 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:36,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash 852873772, now seen corresponding path program 4 times [2024-06-28 00:12:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:36,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699531013] [2024-06-28 00:12:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699531013] [2024-06-28 00:12:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699531013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:38,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209400027] [2024-06-28 00:12:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:38,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:38,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:38,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:38,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 310 transitions, 2732 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:38,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:38,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:38,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:38,782 INFO L124 PetriNetUnfolderBase]: 782/1473 cut-off events. [2024-06-28 00:12:38,782 INFO L125 PetriNetUnfolderBase]: For 417787/417787 co-relation queries the response was YES. [2024-06-28 00:12:38,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11567 conditions, 1473 events. 782/1473 cut-off events. For 417787/417787 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8467 event pairs, 258 based on Foata normal form. 2/1473 useless extension candidates. Maximal degree in co-relation 11392. Up to 1364 conditions per place. [2024-06-28 00:12:38,799 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 285 selfloop transitions, 37 changer transitions 0/324 dead transitions. [2024-06-28 00:12:38,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 324 transitions, 3448 flow [2024-06-28 00:12:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:38,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 00:12:38,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 00:12:38,800 INFO L175 Difference]: Start difference. First operand has 386 places, 310 transitions, 2732 flow. Second operand 11 states and 123 transitions. [2024-06-28 00:12:38,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 324 transitions, 3448 flow [2024-06-28 00:12:40,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 324 transitions, 3402 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:12:40,049 INFO L231 Difference]: Finished difference. Result has 383 places, 311 transitions, 2786 flow [2024-06-28 00:12:40,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2786, PETRI_PLACES=383, PETRI_TRANSITIONS=311} [2024-06-28 00:12:40,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-06-28 00:12:40,050 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 311 transitions, 2786 flow [2024-06-28 00:12:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:40,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:40,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:40,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 00:12:40,050 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:40,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 609130646, now seen corresponding path program 5 times [2024-06-28 00:12:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:40,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649660634] [2024-06-28 00:12:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:40,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:41,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:41,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649660634] [2024-06-28 00:12:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649660634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:41,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:41,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157780779] [2024-06-28 00:12:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:41,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:41,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:41,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:41,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 311 transitions, 2786 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:41,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:41,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:41,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:42,241 INFO L124 PetriNetUnfolderBase]: 786/1481 cut-off events. [2024-06-28 00:12:42,241 INFO L125 PetriNetUnfolderBase]: For 412180/412180 co-relation queries the response was YES. [2024-06-28 00:12:42,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 1481 events. 786/1481 cut-off events. For 412180/412180 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8537 event pairs, 264 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 11452. Up to 1413 conditions per place. [2024-06-28 00:12:42,260 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 299 selfloop transitions, 24 changer transitions 0/325 dead transitions. [2024-06-28 00:12:42,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 325 transitions, 3506 flow [2024-06-28 00:12:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:12:42,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:12:42,261 INFO L175 Difference]: Start difference. First operand has 383 places, 311 transitions, 2786 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:12:42,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 325 transitions, 3506 flow [2024-06-28 00:12:43,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 325 transitions, 3416 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:43,569 INFO L231 Difference]: Finished difference. Result has 385 places, 312 transitions, 2772 flow [2024-06-28 00:12:43,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2772, PETRI_PLACES=385, PETRI_TRANSITIONS=312} [2024-06-28 00:12:43,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:12:43,570 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 312 transitions, 2772 flow [2024-06-28 00:12:43,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:43,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:43,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:43,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 00:12:43,570 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:43,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 616280486, now seen corresponding path program 6 times [2024-06-28 00:12:43,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:43,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393557062] [2024-06-28 00:12:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:43,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393557062] [2024-06-28 00:12:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393557062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:45,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:45,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825449336] [2024-06-28 00:12:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:45,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:45,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 312 transitions, 2772 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:45,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:45,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:45,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:46,024 INFO L124 PetriNetUnfolderBase]: 790/1489 cut-off events. [2024-06-28 00:12:46,025 INFO L125 PetriNetUnfolderBase]: For 417905/417905 co-relation queries the response was YES. [2024-06-28 00:12:46,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11677 conditions, 1489 events. 790/1489 cut-off events. For 417905/417905 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8620 event pairs, 262 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 11502. Up to 1421 conditions per place. [2024-06-28 00:12:46,043 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 22 changer transitions 0/326 dead transitions. [2024-06-28 00:12:46,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 326 transitions, 3496 flow [2024-06-28 00:12:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 00:12:46,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 00:12:46,044 INFO L175 Difference]: Start difference. First operand has 385 places, 312 transitions, 2772 flow. Second operand 11 states and 117 transitions. [2024-06-28 00:12:46,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 326 transitions, 3496 flow [2024-06-28 00:12:47,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 326 transitions, 3430 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:47,496 INFO L231 Difference]: Finished difference. Result has 387 places, 313 transitions, 2780 flow [2024-06-28 00:12:47,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=387, PETRI_TRANSITIONS=313} [2024-06-28 00:12:47,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:12:47,496 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 313 transitions, 2780 flow [2024-06-28 00:12:47,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:47,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:47,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 00:12:47,497 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:47,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 616549256, now seen corresponding path program 7 times [2024-06-28 00:12:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442850936] [2024-06-28 00:12:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442850936] [2024-06-28 00:12:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442850936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:49,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615405357] [2024-06-28 00:12:49,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:49,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:49,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:49,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 313 transitions, 2780 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:49,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:49,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:49,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:49,988 INFO L124 PetriNetUnfolderBase]: 794/1497 cut-off events. [2024-06-28 00:12:49,988 INFO L125 PetriNetUnfolderBase]: For 423826/423826 co-relation queries the response was YES. [2024-06-28 00:12:50,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11750 conditions, 1497 events. 794/1497 cut-off events. For 423826/423826 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8694 event pairs, 262 based on Foata normal form. 2/1497 useless extension candidates. Maximal degree in co-relation 11574. Up to 1409 conditions per place. [2024-06-28 00:12:50,008 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 23 changer transitions 0/327 dead transitions. [2024-06-28 00:12:50,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 327 transitions, 3500 flow [2024-06-28 00:12:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 00:12:50,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 00:12:50,009 INFO L175 Difference]: Start difference. First operand has 387 places, 313 transitions, 2780 flow. Second operand 10 states and 112 transitions. [2024-06-28 00:12:50,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 327 transitions, 3500 flow [2024-06-28 00:12:51,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 327 transitions, 3436 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:51,501 INFO L231 Difference]: Finished difference. Result has 388 places, 314 transitions, 2794 flow [2024-06-28 00:12:51,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2794, PETRI_PLACES=388, PETRI_TRANSITIONS=314} [2024-06-28 00:12:51,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-06-28 00:12:51,501 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 314 transitions, 2794 flow [2024-06-28 00:12:51,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:51,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:51,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:51,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 00:12:51,502 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:51,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1141493086, now seen corresponding path program 8 times [2024-06-28 00:12:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:51,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083264494] [2024-06-28 00:12:51,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:51,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:53,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083264494] [2024-06-28 00:12:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083264494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:53,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:12:53,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889401004] [2024-06-28 00:12:53,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:53,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:12:53,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:12:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:12:53,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:53,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 314 transitions, 2794 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:53,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:53,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:53,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:53,726 INFO L124 PetriNetUnfolderBase]: 798/1505 cut-off events. [2024-06-28 00:12:53,727 INFO L125 PetriNetUnfolderBase]: For 430093/430093 co-relation queries the response was YES. [2024-06-28 00:12:53,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11835 conditions, 1505 events. 798/1505 cut-off events. For 430093/430093 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8759 event pairs, 260 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 11658. Up to 1458 conditions per place. [2024-06-28 00:12:53,749 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 308 selfloop transitions, 17 changer transitions 0/327 dead transitions. [2024-06-28 00:12:53,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 327 transitions, 3498 flow [2024-06-28 00:12:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 00:12:53,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 00:12:53,750 INFO L175 Difference]: Start difference. First operand has 388 places, 314 transitions, 2794 flow. Second operand 11 states and 113 transitions. [2024-06-28 00:12:53,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 327 transitions, 3498 flow [2024-06-28 00:12:55,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 327 transitions, 3430 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:55,212 INFO L231 Difference]: Finished difference. Result has 391 places, 315 transitions, 2794 flow [2024-06-28 00:12:55,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2726, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2794, PETRI_PLACES=391, PETRI_TRANSITIONS=315} [2024-06-28 00:12:55,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:12:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 315 transitions, 2794 flow [2024-06-28 00:12:55,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:55,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:55,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 00:12:55,229 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash 845254716, now seen corresponding path program 33 times [2024-06-28 00:12:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174182164] [2024-06-28 00:12:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:12:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:57,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174182164] [2024-06-28 00:12:57,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174182164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:57,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:57,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:12:57,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688501779] [2024-06-28 00:12:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:12:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:12:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:12:57,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:12:57,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 315 transitions, 2794 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:57,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:57,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:12:57,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:57,809 INFO L124 PetriNetUnfolderBase]: 814/1541 cut-off events. [2024-06-28 00:12:57,810 INFO L125 PetriNetUnfolderBase]: For 518198/518198 co-relation queries the response was YES. [2024-06-28 00:12:57,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11952 conditions, 1541 events. 814/1541 cut-off events. For 518198/518198 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9053 event pairs, 268 based on Foata normal form. 10/1549 useless extension candidates. Maximal degree in co-relation 11774. Up to 1371 conditions per place. [2024-06-28 00:12:57,828 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 282 selfloop transitions, 39 changer transitions 12/335 dead transitions. [2024-06-28 00:12:57,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 335 transitions, 3558 flow [2024-06-28 00:12:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:12:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:12:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 00:12:57,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 00:12:57,829 INFO L175 Difference]: Start difference. First operand has 391 places, 315 transitions, 2794 flow. Second operand 12 states and 139 transitions. [2024-06-28 00:12:57,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 335 transitions, 3558 flow [2024-06-28 00:12:59,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 335 transitions, 3500 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:59,285 INFO L231 Difference]: Finished difference. Result has 394 places, 311 transitions, 2784 flow [2024-06-28 00:12:59,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2784, PETRI_PLACES=394, PETRI_TRANSITIONS=311} [2024-06-28 00:12:59,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 00:12:59,286 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 311 transitions, 2784 flow [2024-06-28 00:12:59,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:12:59,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:59,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 00:12:59,286 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:12:59,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash 845249136, now seen corresponding path program 34 times [2024-06-28 00:12:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224430636] [2024-06-28 00:12:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:00,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:00,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224430636] [2024-06-28 00:13:00,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224430636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:00,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:00,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479154130] [2024-06-28 00:13:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:00,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:00,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:00,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:00,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:01,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:01,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 311 transitions, 2784 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:01,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:01,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:01,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:01,808 INFO L124 PetriNetUnfolderBase]: 802/1521 cut-off events. [2024-06-28 00:13:01,809 INFO L125 PetriNetUnfolderBase]: For 503932/503932 co-relation queries the response was YES. [2024-06-28 00:13:01,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11899 conditions, 1521 events. 802/1521 cut-off events. For 503932/503932 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8906 event pairs, 266 based on Foata normal form. 8/1527 useless extension candidates. Maximal degree in co-relation 11720. Up to 1431 conditions per place. [2024-06-28 00:13:01,836 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 290 selfloop transitions, 23 changer transitions 11/326 dead transitions. [2024-06-28 00:13:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 326 transitions, 3484 flow [2024-06-28 00:13:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 00:13:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 00:13:01,838 INFO L175 Difference]: Start difference. First operand has 394 places, 311 transitions, 2784 flow. Second operand 12 states and 129 transitions. [2024-06-28 00:13:01,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 326 transitions, 3484 flow [2024-06-28 00:13:03,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 326 transitions, 3402 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:03,896 INFO L231 Difference]: Finished difference. Result has 392 places, 308 transitions, 2722 flow [2024-06-28 00:13:03,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2722, PETRI_PLACES=392, PETRI_TRANSITIONS=308} [2024-06-28 00:13:03,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:13:03,896 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 308 transitions, 2722 flow [2024-06-28 00:13:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:03,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 00:13:03,897 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:03,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1457296906, now seen corresponding path program 9 times [2024-06-28 00:13:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312455068] [2024-06-28 00:13:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:05,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:05,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312455068] [2024-06-28 00:13:05,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312455068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:05,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:05,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:05,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859016172] [2024-06-28 00:13:05,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:05,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:05,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:06,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:06,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 308 transitions, 2722 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:06,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:06,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:06,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:06,818 INFO L124 PetriNetUnfolderBase]: 794/1501 cut-off events. [2024-06-28 00:13:06,819 INFO L125 PetriNetUnfolderBase]: For 456820/456820 co-relation queries the response was YES. [2024-06-28 00:13:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12140 conditions, 1501 events. 794/1501 cut-off events. For 456820/456820 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8753 event pairs, 267 based on Foata normal form. 2/1501 useless extension candidates. Maximal degree in co-relation 11962. Up to 1421 conditions per place. [2024-06-28 00:13:06,833 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 297 selfloop transitions, 23 changer transitions 0/322 dead transitions. [2024-06-28 00:13:06,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 322 transitions, 3736 flow [2024-06-28 00:13:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:13:06,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 00:13:06,834 INFO L175 Difference]: Start difference. First operand has 392 places, 308 transitions, 2722 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:13:06,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 322 transitions, 3736 flow [2024-06-28 00:13:08,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 322 transitions, 3678 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:08,224 INFO L231 Difference]: Finished difference. Result has 387 places, 310 transitions, 2783 flow [2024-06-28 00:13:08,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2783, PETRI_PLACES=387, PETRI_TRANSITIONS=310} [2024-06-28 00:13:08,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:13:08,225 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 310 transitions, 2783 flow [2024-06-28 00:13:08,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:08,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:08,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:08,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 00:13:08,225 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:08,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1457306206, now seen corresponding path program 10 times [2024-06-28 00:13:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45708445] [2024-06-28 00:13:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:08,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:09,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:09,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45708445] [2024-06-28 00:13:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45708445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:09,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:09,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:09,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850770366] [2024-06-28 00:13:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:09,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:09,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:09,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 310 transitions, 2783 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:09,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:09,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:09,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:10,460 INFO L124 PetriNetUnfolderBase]: 791/1496 cut-off events. [2024-06-28 00:13:10,460 INFO L125 PetriNetUnfolderBase]: For 424360/424360 co-relation queries the response was YES. [2024-06-28 00:13:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11750 conditions, 1496 events. 791/1496 cut-off events. For 424360/424360 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8705 event pairs, 268 based on Foata normal form. 2/1496 useless extension candidates. Maximal degree in co-relation 11574. Up to 1443 conditions per place. [2024-06-28 00:13:10,479 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 295 selfloop transitions, 23 changer transitions 0/320 dead transitions. [2024-06-28 00:13:10,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 320 transitions, 3441 flow [2024-06-28 00:13:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:13:10,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 00:13:10,480 INFO L175 Difference]: Start difference. First operand has 387 places, 310 transitions, 2783 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:13:10,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 320 transitions, 3441 flow [2024-06-28 00:13:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 320 transitions, 3359 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:11,952 INFO L231 Difference]: Finished difference. Result has 390 places, 310 transitions, 2752 flow [2024-06-28 00:13:11,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2752, PETRI_PLACES=390, PETRI_TRANSITIONS=310} [2024-06-28 00:13:11,953 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 00:13:11,953 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 310 transitions, 2752 flow [2024-06-28 00:13:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:11,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:11,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:11,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 00:13:11,953 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:11,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1959479688, now seen corresponding path program 11 times [2024-06-28 00:13:11,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:11,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756928328] [2024-06-28 00:13:11,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:13,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756928328] [2024-06-28 00:13:13,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756928328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:13,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811741337] [2024-06-28 00:13:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:13,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:13,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:13,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 310 transitions, 2752 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:13,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:13,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:13,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:14,415 INFO L124 PetriNetUnfolderBase]: 802/1517 cut-off events. [2024-06-28 00:13:14,416 INFO L125 PetriNetUnfolderBase]: For 450808/450808 co-relation queries the response was YES. [2024-06-28 00:13:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 1517 events. 802/1517 cut-off events. For 450808/450808 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8874 event pairs, 269 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 12017. Up to 1383 conditions per place. [2024-06-28 00:13:14,434 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 287 selfloop transitions, 37 changer transitions 0/326 dead transitions. [2024-06-28 00:13:14,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 326 transitions, 3796 flow [2024-06-28 00:13:14,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 00:13:14,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 00:13:14,436 INFO L175 Difference]: Start difference. First operand has 390 places, 310 transitions, 2752 flow. Second operand 11 states and 124 transitions. [2024-06-28 00:13:14,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 326 transitions, 3796 flow [2024-06-28 00:13:15,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 326 transitions, 3746 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:13:15,888 INFO L231 Difference]: Finished difference. Result has 392 places, 312 transitions, 2846 flow [2024-06-28 00:13:15,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2846, PETRI_PLACES=392, PETRI_TRANSITIONS=312} [2024-06-28 00:13:15,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:13:15,888 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 312 transitions, 2846 flow [2024-06-28 00:13:15,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:15,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:15,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:15,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 00:13:15,889 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:15,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1959756394, now seen corresponding path program 35 times [2024-06-28 00:13:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139618941] [2024-06-28 00:13:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139618941] [2024-06-28 00:13:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139618941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:17,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45102368] [2024-06-28 00:13:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:17,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:17,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 312 transitions, 2846 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:17,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:17,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:17,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:18,492 INFO L124 PetriNetUnfolderBase]: 818/1553 cut-off events. [2024-06-28 00:13:18,493 INFO L125 PetriNetUnfolderBase]: For 539667/539667 co-relation queries the response was YES. [2024-06-28 00:13:18,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12404 conditions, 1553 events. 818/1553 cut-off events. For 539667/539667 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9165 event pairs, 281 based on Foata normal form. 10/1561 useless extension candidates. Maximal degree in co-relation 12225. Up to 1400 conditions per place. [2024-06-28 00:13:18,512 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 284 selfloop transitions, 33 changer transitions 12/331 dead transitions. [2024-06-28 00:13:18,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 331 transitions, 3598 flow [2024-06-28 00:13:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 00:13:18,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 00:13:18,513 INFO L175 Difference]: Start difference. First operand has 392 places, 312 transitions, 2846 flow. Second operand 12 states and 136 transitions. [2024-06-28 00:13:18,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 331 transitions, 3598 flow [2024-06-28 00:13:20,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 331 transitions, 3514 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:20,041 INFO L231 Difference]: Finished difference. Result has 397 places, 308 transitions, 2788 flow [2024-06-28 00:13:20,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2788, PETRI_PLACES=397, PETRI_TRANSITIONS=308} [2024-06-28 00:13:20,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-28 00:13:20,042 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 308 transitions, 2788 flow [2024-06-28 00:13:20,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:20,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:20,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:20,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 00:13:20,042 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:20,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash 889290928, now seen corresponding path program 36 times [2024-06-28 00:13:20,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:20,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191432377] [2024-06-28 00:13:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191432377] [2024-06-28 00:13:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191432377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:21,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:21,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:21,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456894038] [2024-06-28 00:13:21,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:21,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 308 transitions, 2788 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:21,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:21,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:22,552 INFO L124 PetriNetUnfolderBase]: 808/1539 cut-off events. [2024-06-28 00:13:22,553 INFO L125 PetriNetUnfolderBase]: For 546455/546455 co-relation queries the response was YES. [2024-06-28 00:13:22,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12321 conditions, 1539 events. 808/1539 cut-off events. For 546455/546455 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9090 event pairs, 281 based on Foata normal form. 10/1547 useless extension candidates. Maximal degree in co-relation 12140. Up to 1386 conditions per place. [2024-06-28 00:13:22,572 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 284 selfloop transitions, 30 changer transitions 12/328 dead transitions. [2024-06-28 00:13:22,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 3544 flow [2024-06-28 00:13:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:22,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 00:13:22,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 00:13:22,574 INFO L175 Difference]: Start difference. First operand has 397 places, 308 transitions, 2788 flow. Second operand 12 states and 137 transitions. [2024-06-28 00:13:22,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 3544 flow [2024-06-28 00:13:24,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 328 transitions, 3474 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:24,113 INFO L231 Difference]: Finished difference. Result has 395 places, 304 transitions, 2738 flow [2024-06-28 00:13:24,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2738, PETRI_PLACES=395, PETRI_TRANSITIONS=304} [2024-06-28 00:13:24,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 00:13:24,113 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 304 transitions, 2738 flow [2024-06-28 00:13:24,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:24,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:24,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:24,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 00:13:24,114 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:24,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:24,114 INFO L85 PathProgramCache]: Analyzing trace with hash 845464462, now seen corresponding path program 12 times [2024-06-28 00:13:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659741343] [2024-06-28 00:13:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659741343] [2024-06-28 00:13:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659741343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:25,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:25,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:25,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363010259] [2024-06-28 00:13:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:25,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:26,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:26,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 304 transitions, 2738 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:26,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:26,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:26,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:26,698 INFO L124 PetriNetUnfolderBase]: 786/1497 cut-off events. [2024-06-28 00:13:26,698 INFO L125 PetriNetUnfolderBase]: For 456941/456941 co-relation queries the response was YES. [2024-06-28 00:13:26,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12128 conditions, 1497 events. 786/1497 cut-off events. For 456941/456941 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8793 event pairs, 277 based on Foata normal form. 2/1497 useless extension candidates. Maximal degree in co-relation 11948. Up to 1388 conditions per place. [2024-06-28 00:13:26,712 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 31 changer transitions 0/319 dead transitions. [2024-06-28 00:13:26,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 319 transitions, 3458 flow [2024-06-28 00:13:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 00:13:26,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 00:13:26,714 INFO L175 Difference]: Start difference. First operand has 395 places, 304 transitions, 2738 flow. Second operand 10 states and 117 transitions. [2024-06-28 00:13:26,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 319 transitions, 3458 flow [2024-06-28 00:13:28,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 319 transitions, 3394 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:28,096 INFO L231 Difference]: Finished difference. Result has 391 places, 305 transitions, 2766 flow [2024-06-28 00:13:28,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2766, PETRI_PLACES=391, PETRI_TRANSITIONS=305} [2024-06-28 00:13:28,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 00:13:28,096 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 305 transitions, 2766 flow [2024-06-28 00:13:28,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:28,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:28,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:28,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 00:13:28,097 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:28,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:28,097 INFO L85 PathProgramCache]: Analyzing trace with hash 695351518, now seen corresponding path program 37 times [2024-06-28 00:13:28,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:28,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485394649] [2024-06-28 00:13:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485394649] [2024-06-28 00:13:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485394649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:29,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667079554] [2024-06-28 00:13:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:29,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:29,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:29,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 305 transitions, 2766 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:29,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:29,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:29,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:30,583 INFO L124 PetriNetUnfolderBase]: 773/1474 cut-off events. [2024-06-28 00:13:30,584 INFO L125 PetriNetUnfolderBase]: For 430242/430242 co-relation queries the response was YES. [2024-06-28 00:13:30,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10597 conditions, 1474 events. 773/1474 cut-off events. For 430242/430242 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8642 event pairs, 262 based on Foata normal form. 10/1482 useless extension candidates. Maximal degree in co-relation 10418. Up to 1321 conditions per place. [2024-06-28 00:13:30,602 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 275 selfloop transitions, 33 changer transitions 12/322 dead transitions. [2024-06-28 00:13:30,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 322 transitions, 3480 flow [2024-06-28 00:13:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:30,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:13:30,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:13:30,603 INFO L175 Difference]: Start difference. First operand has 391 places, 305 transitions, 2766 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:13:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 322 transitions, 3480 flow [2024-06-28 00:13:31,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 322 transitions, 3400 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:13:31,582 INFO L231 Difference]: Finished difference. Result has 395 places, 301 transitions, 2712 flow [2024-06-28 00:13:31,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2712, PETRI_PLACES=395, PETRI_TRANSITIONS=301} [2024-06-28 00:13:31,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 00:13:31,583 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 301 transitions, 2712 flow [2024-06-28 00:13:31,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:31,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:31,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:31,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 00:13:31,583 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:31,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2133914262, now seen corresponding path program 38 times [2024-06-28 00:13:31,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:31,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503593725] [2024-06-28 00:13:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:31,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503593725] [2024-06-28 00:13:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503593725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212121049] [2024-06-28 00:13:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:33,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:33,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:33,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:33,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 301 transitions, 2712 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:33,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:33,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:33,963 INFO L124 PetriNetUnfolderBase]: 788/1511 cut-off events. [2024-06-28 00:13:33,963 INFO L125 PetriNetUnfolderBase]: For 519021/519021 co-relation queries the response was YES. [2024-06-28 00:13:33,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12122 conditions, 1511 events. 788/1511 cut-off events. For 519021/519021 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8929 event pairs, 271 based on Foata normal form. 8/1517 useless extension candidates. Maximal degree in co-relation 11942. Up to 1287 conditions per place. [2024-06-28 00:13:33,982 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 40 changer transitions 7/323 dead transitions. [2024-06-28 00:13:33,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 323 transitions, 3744 flow [2024-06-28 00:13:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:33,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-28 00:13:33,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 00:13:33,983 INFO L175 Difference]: Start difference. First operand has 395 places, 301 transitions, 2712 flow. Second operand 12 states and 142 transitions. [2024-06-28 00:13:33,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 323 transitions, 3744 flow [2024-06-28 00:13:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 323 transitions, 3670 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:35,369 INFO L231 Difference]: Finished difference. Result has 393 places, 299 transitions, 2710 flow [2024-06-28 00:13:35,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2710, PETRI_PLACES=393, PETRI_TRANSITIONS=299} [2024-06-28 00:13:35,370 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2024-06-28 00:13:35,370 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 299 transitions, 2710 flow [2024-06-28 00:13:35,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:35,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 00:13:35,370 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:35,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2133919842, now seen corresponding path program 39 times [2024-06-28 00:13:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311004962] [2024-06-28 00:13:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311004962] [2024-06-28 00:13:37,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311004962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:37,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947179457] [2024-06-28 00:13:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:37,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:37,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 299 transitions, 2710 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:37,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:37,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:37,969 INFO L124 PetriNetUnfolderBase]: 757/1450 cut-off events. [2024-06-28 00:13:37,969 INFO L125 PetriNetUnfolderBase]: For 430811/430811 co-relation queries the response was YES. [2024-06-28 00:13:37,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10459 conditions, 1450 events. 757/1450 cut-off events. For 430811/430811 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8503 event pairs, 262 based on Foata normal form. 10/1458 useless extension candidates. Maximal degree in co-relation 10280. Up to 1296 conditions per place. [2024-06-28 00:13:37,988 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 269 selfloop transitions, 31 changer transitions 14/316 dead transitions. [2024-06-28 00:13:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 316 transitions, 3410 flow [2024-06-28 00:13:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:13:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:13:37,989 INFO L175 Difference]: Start difference. First operand has 393 places, 299 transitions, 2710 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:13:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 316 transitions, 3410 flow [2024-06-28 00:13:39,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 316 transitions, 3329 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:39,234 INFO L231 Difference]: Finished difference. Result has 392 places, 294 transitions, 2643 flow [2024-06-28 00:13:39,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2643, PETRI_PLACES=392, PETRI_TRANSITIONS=294} [2024-06-28 00:13:39,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 00:13:39,234 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 294 transitions, 2643 flow [2024-06-28 00:13:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:39,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 00:13:39,235 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:39,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2134129588, now seen corresponding path program 13 times [2024-06-28 00:13:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:39,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991010097] [2024-06-28 00:13:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:40,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991010097] [2024-06-28 00:13:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991010097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571928440] [2024-06-28 00:13:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:40,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:41,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:41,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 294 transitions, 2643 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:41,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:41,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:41,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:41,438 INFO L124 PetriNetUnfolderBase]: 729/1394 cut-off events. [2024-06-28 00:13:41,438 INFO L125 PetriNetUnfolderBase]: For 323819/323819 co-relation queries the response was YES. [2024-06-28 00:13:41,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9884 conditions, 1394 events. 729/1394 cut-off events. For 323819/323819 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8103 event pairs, 257 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 9706. Up to 1285 conditions per place. [2024-06-28 00:13:41,456 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 270 selfloop transitions, 33 changer transitions 0/305 dead transitions. [2024-06-28 00:13:41,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 305 transitions, 3281 flow [2024-06-28 00:13:41,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 00:13:41,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 00:13:41,457 INFO L175 Difference]: Start difference. First operand has 392 places, 294 transitions, 2643 flow. Second operand 11 states and 120 transitions. [2024-06-28 00:13:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 305 transitions, 3281 flow [2024-06-28 00:13:42,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 305 transitions, 3195 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:42,568 INFO L231 Difference]: Finished difference. Result has 386 places, 294 transitions, 2627 flow [2024-06-28 00:13:42,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2627, PETRI_PLACES=386, PETRI_TRANSITIONS=294} [2024-06-28 00:13:42,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 00:13:42,569 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 294 transitions, 2627 flow [2024-06-28 00:13:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:42,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:42,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 00:13:42,569 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:42,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2128407732, now seen corresponding path program 40 times [2024-06-28 00:13:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464323826] [2024-06-28 00:13:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464323826] [2024-06-28 00:13:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464323826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531769774] [2024-06-28 00:13:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:44,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:44,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 294 transitions, 2627 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:44,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:44,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:44,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:45,185 INFO L124 PetriNetUnfolderBase]: 741/1422 cut-off events. [2024-06-28 00:13:45,185 INFO L125 PetriNetUnfolderBase]: For 372626/372626 co-relation queries the response was YES. [2024-06-28 00:13:45,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9892 conditions, 1422 events. 741/1422 cut-off events. For 372626/372626 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8322 event pairs, 255 based on Foata normal form. 8/1428 useless extension candidates. Maximal degree in co-relation 9716. Up to 1240 conditions per place. [2024-06-28 00:13:45,202 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 27 changer transitions 10/315 dead transitions. [2024-06-28 00:13:45,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 315 transitions, 3623 flow [2024-06-28 00:13:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 00:13:45,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 00:13:45,203 INFO L175 Difference]: Start difference. First operand has 386 places, 294 transitions, 2627 flow. Second operand 11 states and 133 transitions. [2024-06-28 00:13:45,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 315 transitions, 3623 flow [2024-06-28 00:13:46,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 315 transitions, 3547 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:46,444 INFO L231 Difference]: Finished difference. Result has 387 places, 291 transitions, 2589 flow [2024-06-28 00:13:46,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2551, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2589, PETRI_PLACES=387, PETRI_TRANSITIONS=291} [2024-06-28 00:13:46,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2024-06-28 00:13:46,444 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 291 transitions, 2589 flow [2024-06-28 00:13:46,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:46,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:46,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:46,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 00:13:46,445 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:46,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash 645947346, now seen corresponding path program 41 times [2024-06-28 00:13:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:46,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500278859] [2024-06-28 00:13:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:46,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:48,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:48,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500278859] [2024-06-28 00:13:48,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500278859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:48,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:48,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489167229] [2024-06-28 00:13:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:48,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:48,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 291 transitions, 2589 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:48,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:48,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:48,916 INFO L124 PetriNetUnfolderBase]: 731/1404 cut-off events. [2024-06-28 00:13:48,917 INFO L125 PetriNetUnfolderBase]: For 378746/378746 co-relation queries the response was YES. [2024-06-28 00:13:48,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9839 conditions, 1404 events. 731/1404 cut-off events. For 378746/378746 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8180 event pairs, 249 based on Foata normal form. 8/1410 useless extension candidates. Maximal degree in co-relation 9662. Up to 1228 conditions per place. [2024-06-28 00:13:48,942 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 268 selfloop transitions, 34 changer transitions 7/311 dead transitions. [2024-06-28 00:13:48,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 311 transitions, 3577 flow [2024-06-28 00:13:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:48,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 00:13:48,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 00:13:48,943 INFO L175 Difference]: Start difference. First operand has 387 places, 291 transitions, 2589 flow. Second operand 12 states and 141 transitions. [2024-06-28 00:13:48,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 311 transitions, 3577 flow [2024-06-28 00:13:50,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 311 transitions, 3515 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:13:50,218 INFO L231 Difference]: Finished difference. Result has 385 places, 289 transitions, 2588 flow [2024-06-28 00:13:50,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2588, PETRI_PLACES=385, PETRI_TRANSITIONS=289} [2024-06-28 00:13:50,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-06-28 00:13:50,219 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 289 transitions, 2588 flow [2024-06-28 00:13:50,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:50,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:50,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 00:13:50,221 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:50,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:50,221 INFO L85 PathProgramCache]: Analyzing trace with hash 689787328, now seen corresponding path program 42 times [2024-06-28 00:13:50,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:50,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735398687] [2024-06-28 00:13:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:50,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:52,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:52,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735398687] [2024-06-28 00:13:52,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735398687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:52,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:52,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:13:52,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820024734] [2024-06-28 00:13:52,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:52,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:13:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:13:52,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:13:52,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 00:13:52,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 289 transitions, 2588 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:52,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:52,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 00:13:52,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:53,131 INFO L124 PetriNetUnfolderBase]: 700/1343 cut-off events. [2024-06-28 00:13:53,132 INFO L125 PetriNetUnfolderBase]: For 290720/290720 co-relation queries the response was YES. [2024-06-28 00:13:53,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8203 conditions, 1343 events. 700/1343 cut-off events. For 290720/290720 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7776 event pairs, 240 based on Foata normal form. 10/1351 useless extension candidates. Maximal degree in co-relation 8028. Up to 1174 conditions per place. [2024-06-28 00:13:53,148 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 36 changer transitions 15/304 dead transitions. [2024-06-28 00:13:53,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 304 transitions, 3250 flow [2024-06-28 00:13:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:13:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:13:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 00:13:53,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 00:13:53,149 INFO L175 Difference]: Start difference. First operand has 385 places, 289 transitions, 2588 flow. Second operand 12 states and 135 transitions. [2024-06-28 00:13:53,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 304 transitions, 3250 flow [2024-06-28 00:13:54,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 304 transitions, 3181 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 00:13:54,151 INFO L231 Difference]: Finished difference. Result has 384 places, 282 transitions, 2530 flow [2024-06-28 00:13:54,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2530, PETRI_PLACES=384, PETRI_TRANSITIONS=282} [2024-06-28 00:13:54,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-28 00:13:54,151 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 282 transitions, 2530 flow [2024-06-28 00:13:54,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:54,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:54,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:54,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 00:13:54,152 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:54,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -432269560, now seen corresponding path program 43 times [2024-06-28 00:13:54,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:54,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792414257] [2024-06-28 00:13:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:55,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:55,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792414257] [2024-06-28 00:13:55,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792414257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:55,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:55,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:55,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750856329] [2024-06-28 00:13:55,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:55,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:55,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:55,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:13:55,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 282 transitions, 2530 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:55,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:55,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:13:55,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:56,534 INFO L124 PetriNetUnfolderBase]: 701/1350 cut-off events. [2024-06-28 00:13:56,535 INFO L125 PetriNetUnfolderBase]: For 324124/324124 co-relation queries the response was YES. [2024-06-28 00:13:56,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 1350 events. 701/1350 cut-off events. For 324124/324124 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7773 event pairs, 112 based on Foata normal form. 8/1356 useless extension candidates. Maximal degree in co-relation 8798. Up to 503 conditions per place. [2024-06-28 00:13:56,552 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 105 changer transitions 18/309 dead transitions. [2024-06-28 00:13:56,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 309 transitions, 3514 flow [2024-06-28 00:13:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-28 00:13:56,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44281524926686217 [2024-06-28 00:13:56,553 INFO L175 Difference]: Start difference. First operand has 384 places, 282 transitions, 2530 flow. Second operand 11 states and 151 transitions. [2024-06-28 00:13:56,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 309 transitions, 3514 flow [2024-06-28 00:13:57,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 309 transitions, 3423 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 00:13:57,462 INFO L231 Difference]: Finished difference. Result has 374 places, 278 transitions, 2641 flow [2024-06-28 00:13:57,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2641, PETRI_PLACES=374, PETRI_TRANSITIONS=278} [2024-06-28 00:13:57,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-06-28 00:13:57,463 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 278 transitions, 2641 flow [2024-06-28 00:13:57,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:57,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:57,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:57,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 00:13:57,464 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:13:57,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1970892202, now seen corresponding path program 44 times [2024-06-28 00:13:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383464362] [2024-06-28 00:13:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383464362] [2024-06-28 00:13:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383464362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:13:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200690206] [2024-06-28 00:13:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:13:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:13:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:13:59,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:13:59,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 278 transitions, 2641 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:59,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:59,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:13:59,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:59,934 INFO L124 PetriNetUnfolderBase]: 714/1381 cut-off events. [2024-06-28 00:13:59,935 INFO L125 PetriNetUnfolderBase]: For 400291/400291 co-relation queries the response was YES. [2024-06-28 00:13:59,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10541 conditions, 1381 events. 714/1381 cut-off events. For 400291/400291 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7962 event pairs, 123 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 10370. Up to 774 conditions per place. [2024-06-28 00:13:59,952 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 106 changer transitions 13/306 dead transitions. [2024-06-28 00:13:59,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 306 transitions, 3639 flow [2024-06-28 00:13:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:13:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:13:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 00:13:59,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604105571847507 [2024-06-28 00:13:59,954 INFO L175 Difference]: Start difference. First operand has 374 places, 278 transitions, 2641 flow. Second operand 11 states and 157 transitions. [2024-06-28 00:13:59,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 306 transitions, 3639 flow [2024-06-28 00:14:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 306 transitions, 3464 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:14:00,994 INFO L231 Difference]: Finished difference. Result has 369 places, 275 transitions, 2673 flow [2024-06-28 00:14:00,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2673, PETRI_PLACES=369, PETRI_TRANSITIONS=275} [2024-06-28 00:14:00,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 00:14:00,994 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 275 transitions, 2673 flow [2024-06-28 00:14:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:00,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:00,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:00,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 00:14:00,995 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:00,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1372321040, now seen corresponding path program 45 times [2024-06-28 00:14:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:00,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772860383] [2024-06-28 00:14:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:00,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:02,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:02,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772860383] [2024-06-28 00:14:02,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772860383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:02,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:14:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436658631] [2024-06-28 00:14:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:02,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:14:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:14:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:14:03,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:03,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 275 transitions, 2673 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:03,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:03,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:03,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:03,505 INFO L124 PetriNetUnfolderBase]: 701/1358 cut-off events. [2024-06-28 00:14:03,505 INFO L125 PetriNetUnfolderBase]: For 382742/382742 co-relation queries the response was YES. [2024-06-28 00:14:03,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 1358 events. 701/1358 cut-off events. For 382742/382742 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7818 event pairs, 132 based on Foata normal form. 10/1366 useless extension candidates. Maximal degree in co-relation 10069. Up to 830 conditions per place. [2024-06-28 00:14:03,561 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 105 changer transitions 14/297 dead transitions. [2024-06-28 00:14:03,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 297 transitions, 3351 flow [2024-06-28 00:14:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-28 00:14:03,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436950146627566 [2024-06-28 00:14:03,563 INFO L175 Difference]: Start difference. First operand has 369 places, 275 transitions, 2673 flow. Second operand 11 states and 149 transitions. [2024-06-28 00:14:03,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 297 transitions, 3351 flow [2024-06-28 00:14:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 297 transitions, 3136 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:04,681 INFO L231 Difference]: Finished difference. Result has 366 places, 272 transitions, 2649 flow [2024-06-28 00:14:04,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2649, PETRI_PLACES=366, PETRI_TRANSITIONS=272} [2024-06-28 00:14:04,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 00:14:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 272 transitions, 2649 flow [2024-06-28 00:14:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:04,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:04,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 00:14:04,682 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:04,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1250490014, now seen corresponding path program 46 times [2024-06-28 00:14:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921119810] [2024-06-28 00:14:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921119810] [2024-06-28 00:14:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921119810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779984706] [2024-06-28 00:14:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:06,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 272 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:06,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:06,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:06,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:06,968 INFO L124 PetriNetUnfolderBase]: 689/1338 cut-off events. [2024-06-28 00:14:06,969 INFO L125 PetriNetUnfolderBase]: For 354336/354336 co-relation queries the response was YES. [2024-06-28 00:14:06,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10085 conditions, 1338 events. 689/1338 cut-off events. For 354336/354336 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7673 event pairs, 118 based on Foata normal form. 8/1344 useless extension candidates. Maximal degree in co-relation 9919. Up to 748 conditions per place. [2024-06-28 00:14:06,991 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 102 changer transitions 16/299 dead transitions. [2024-06-28 00:14:06,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 299 transitions, 3611 flow [2024-06-28 00:14:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 00:14:06,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-28 00:14:06,993 INFO L175 Difference]: Start difference. First operand has 366 places, 272 transitions, 2649 flow. Second operand 11 states and 154 transitions. [2024-06-28 00:14:06,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 299 transitions, 3611 flow [2024-06-28 00:14:08,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 299 transitions, 3393 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:08,358 INFO L231 Difference]: Finished difference. Result has 364 places, 268 transitions, 2621 flow [2024-06-28 00:14:08,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2621, PETRI_PLACES=364, PETRI_TRANSITIONS=268} [2024-06-28 00:14:08,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 00:14:08,359 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 268 transitions, 2621 flow [2024-06-28 00:14:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:08,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:08,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 00:14:08,359 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:08,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1254209084, now seen corresponding path program 47 times [2024-06-28 00:14:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941922247] [2024-06-28 00:14:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:10,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:10,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941922247] [2024-06-28 00:14:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941922247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:10,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:10,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:10,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603838071] [2024-06-28 00:14:10,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:10,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:10,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 268 transitions, 2621 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:10,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:10,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:10,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:10,792 INFO L124 PetriNetUnfolderBase]: 653/1266 cut-off events. [2024-06-28 00:14:10,793 INFO L125 PetriNetUnfolderBase]: For 283003/283003 co-relation queries the response was YES. [2024-06-28 00:14:10,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8788 conditions, 1266 events. 653/1266 cut-off events. For 283003/283003 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7184 event pairs, 100 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 8623. Up to 748 conditions per place. [2024-06-28 00:14:10,812 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 98 changer transitions 23/289 dead transitions. [2024-06-28 00:14:10,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 289 transitions, 3271 flow [2024-06-28 00:14:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:14:10,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:14:10,814 INFO L175 Difference]: Start difference. First operand has 364 places, 268 transitions, 2621 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:14:10,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 289 transitions, 3271 flow [2024-06-28 00:14:11,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 289 transitions, 3060 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:11,925 INFO L231 Difference]: Finished difference. Result has 359 places, 260 transitions, 2547 flow [2024-06-28 00:14:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2547, PETRI_PLACES=359, PETRI_TRANSITIONS=260} [2024-06-28 00:14:11,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 00:14:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 260 transitions, 2547 flow [2024-06-28 00:14:11,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:11,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:11,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 00:14:11,927 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:11,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2138846980, now seen corresponding path program 48 times [2024-06-28 00:14:11,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:11,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550468724] [2024-06-28 00:14:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:13,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:13,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550468724] [2024-06-28 00:14:13,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550468724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:13,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:13,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:14:13,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744399521] [2024-06-28 00:14:13,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:13,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:14:13,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:13,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:14:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:14:14,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:14,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 260 transitions, 2547 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:14,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:14,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:14,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:14,665 INFO L124 PetriNetUnfolderBase]: 639/1240 cut-off events. [2024-06-28 00:14:14,665 INFO L125 PetriNetUnfolderBase]: For 285970/285970 co-relation queries the response was YES. [2024-06-28 00:14:14,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8598 conditions, 1240 events. 639/1240 cut-off events. For 285970/285970 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7049 event pairs, 99 based on Foata normal form. 10/1248 useless extension candidates. Maximal degree in co-relation 8436. Up to 885 conditions per place. [2024-06-28 00:14:14,679 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 196 selfloop transitions, 67 changer transitions 13/278 dead transitions. [2024-06-28 00:14:14,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 278 transitions, 3177 flow [2024-06-28 00:14:14,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-28 00:14:14,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-28 00:14:14,680 INFO L175 Difference]: Start difference. First operand has 359 places, 260 transitions, 2547 flow. Second operand 11 states and 144 transitions. [2024-06-28 00:14:14,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 278 transitions, 3177 flow [2024-06-28 00:14:15,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 278 transitions, 2954 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:14:15,555 INFO L231 Difference]: Finished difference. Result has 346 places, 256 transitions, 2426 flow [2024-06-28 00:14:15,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2426, PETRI_PLACES=346, PETRI_TRANSITIONS=256} [2024-06-28 00:14:15,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 00:14:15,556 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 256 transitions, 2426 flow [2024-06-28 00:14:15,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:15,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:15,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:15,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 00:14:15,556 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:15,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1072304940, now seen corresponding path program 49 times [2024-06-28 00:14:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320999995] [2024-06-28 00:14:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320999995] [2024-06-28 00:14:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320999995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:17,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425906763] [2024-06-28 00:14:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:17,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:17,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 256 transitions, 2426 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:17,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:17,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:17,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:18,283 INFO L124 PetriNetUnfolderBase]: 629/1226 cut-off events. [2024-06-28 00:14:18,284 INFO L125 PetriNetUnfolderBase]: For 267922/267922 co-relation queries the response was YES. [2024-06-28 00:14:18,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8321 conditions, 1226 events. 629/1226 cut-off events. For 267922/267922 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6978 event pairs, 100 based on Foata normal form. 10/1234 useless extension candidates. Maximal degree in co-relation 8166. Up to 861 conditions per place. [2024-06-28 00:14:18,302 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 70 changer transitions 12/274 dead transitions. [2024-06-28 00:14:18,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 274 transitions, 3048 flow [2024-06-28 00:14:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 00:14:18,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 00:14:18,303 INFO L175 Difference]: Start difference. First operand has 346 places, 256 transitions, 2426 flow. Second operand 11 states and 145 transitions. [2024-06-28 00:14:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 274 transitions, 3048 flow [2024-06-28 00:14:19,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 274 transitions, 2910 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:19,076 INFO L231 Difference]: Finished difference. Result has 344 places, 253 transitions, 2411 flow [2024-06-28 00:14:19,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2288, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2411, PETRI_PLACES=344, PETRI_TRANSITIONS=253} [2024-06-28 00:14:19,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 00:14:19,077 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 253 transitions, 2411 flow [2024-06-28 00:14:19,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:19,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:19,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:19,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 00:14:19,077 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:19,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1072310520, now seen corresponding path program 50 times [2024-06-28 00:14:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113376450] [2024-06-28 00:14:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:20,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113376450] [2024-06-28 00:14:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113376450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:20,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833246074] [2024-06-28 00:14:20,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:20,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:20,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:20,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 253 transitions, 2411 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:20,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:20,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:21,472 INFO L124 PetriNetUnfolderBase]: 617/1206 cut-off events. [2024-06-28 00:14:21,472 INFO L125 PetriNetUnfolderBase]: For 248917/248917 co-relation queries the response was YES. [2024-06-28 00:14:21,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8216 conditions, 1206 events. 617/1206 cut-off events. For 248917/248917 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6853 event pairs, 96 based on Foata normal form. 8/1212 useless extension candidates. Maximal degree in co-relation 8062. Up to 851 conditions per place. [2024-06-28 00:14:21,486 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 68 changer transitions 12/270 dead transitions. [2024-06-28 00:14:21,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 270 transitions, 3013 flow [2024-06-28 00:14:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 00:14:21,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 00:14:21,487 INFO L175 Difference]: Start difference. First operand has 344 places, 253 transitions, 2411 flow. Second operand 11 states and 142 transitions. [2024-06-28 00:14:21,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 270 transitions, 3013 flow [2024-06-28 00:14:22,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 270 transitions, 2869 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:22,321 INFO L231 Difference]: Finished difference. Result has 342 places, 250 transitions, 2384 flow [2024-06-28 00:14:22,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2384, PETRI_PLACES=342, PETRI_TRANSITIONS=250} [2024-06-28 00:14:22,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 00:14:22,322 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 250 transitions, 2384 flow [2024-06-28 00:14:22,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:22,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:22,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:22,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 00:14:22,322 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:22,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:22,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1077817050, now seen corresponding path program 51 times [2024-06-28 00:14:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:22,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104053900] [2024-06-28 00:14:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:22,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:23,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104053900] [2024-06-28 00:14:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104053900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:23,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:23,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:14:23,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934977356] [2024-06-28 00:14:23,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:23,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:14:23,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:23,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:14:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:14:24,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 00:14:24,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 250 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:24,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:24,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 00:14:24,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:24,744 INFO L124 PetriNetUnfolderBase]: 639/1252 cut-off events. [2024-06-28 00:14:24,744 INFO L125 PetriNetUnfolderBase]: For 316311/316311 co-relation queries the response was YES. [2024-06-28 00:14:24,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9537 conditions, 1252 events. 639/1252 cut-off events. For 316311/316311 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7140 event pairs, 107 based on Foata normal form. 8/1258 useless extension candidates. Maximal degree in co-relation 9384. Up to 805 conditions per place. [2024-06-28 00:14:24,756 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 69 changer transitions 11/274 dead transitions. [2024-06-28 00:14:24,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 274 transitions, 3278 flow [2024-06-28 00:14:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:14:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:14:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-28 00:14:24,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44574780058651026 [2024-06-28 00:14:24,757 INFO L175 Difference]: Start difference. First operand has 342 places, 250 transitions, 2384 flow. Second operand 11 states and 152 transitions. [2024-06-28 00:14:24,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 274 transitions, 3278 flow [2024-06-28 00:14:25,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 274 transitions, 3130 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:25,484 INFO L231 Difference]: Finished difference. Result has 338 places, 247 transitions, 2367 flow [2024-06-28 00:14:25,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2367, PETRI_PLACES=338, PETRI_TRANSITIONS=247} [2024-06-28 00:14:25,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 00:14:25,484 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 247 transitions, 2367 flow [2024-06-28 00:14:25,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:25,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:25,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:25,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 00:14:25,485 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:14:25,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1077667320, now seen corresponding path program 52 times [2024-06-28 00:14:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634890555] [2024-06-28 00:14:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:27,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634890555] [2024-06-28 00:14:27,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634890555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:14:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64387399] [2024-06-28 00:14:27,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:27,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:14:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:14:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 Killed by 15