./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix019_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/mix019_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/mix019_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix019_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 [2024-06-27 23:26:46,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:26:46,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:26:46,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:26:46,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:26:46,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:26:46,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:26:46,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:26:46,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:26:46,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:26:46,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:26:46,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:26:46,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:26:46,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:26:46,660 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:26:46,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:26:46,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:26:46,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:26:46,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:26:46,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:26:46,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:26:46,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:26:46,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:26:46,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:26:46,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:26:46,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:26:46,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:26:46,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:26:46,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:26:46,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:26:46,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:26:46,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:26:46,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:26:46,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:26:46,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:26:46,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:26:46,666 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:26:46,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:26:46,666 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:26:46,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:26:46,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:26:46,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:26:46,889 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:26:46,890 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:26:46,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix019_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 23:26:46,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:26:46,980 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:26:46,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix019_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:26:48,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:26:48,316 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:26:48,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:26:48,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e6a1f2a/ef309a8b975942dab7724658c476a45d/FLAG6be00c10f [2024-06-27 23:26:48,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49e6a1f2a/ef309a8b975942dab7724658c476a45d [2024-06-27 23:26:48,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:26:48,340 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:26:48,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:26:48,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:26:48,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:26:48,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:26:46" (1/2) ... [2024-06-27 23:26:48,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec2e70 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:26:48, skipping insertion in model container [2024-06-27 23:26:48,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:26:46" (1/2) ... [2024-06-27 23:26:48,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d163355 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:26:48, skipping insertion in model container [2024-06-27 23:26:48,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:26:48" (2/2) ... [2024-06-27 23:26:48,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec2e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48, skipping insertion in model container [2024-06-27 23:26:48,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:26:48" (2/2) ... [2024-06-27 23:26:48,363 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:26:48,383 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:26:48,383 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:26:48,384 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:26:48,384 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$flush_delayed) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$r_buff0_thd1 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd0) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff1 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd2) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0_used >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$read_delayed) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff0_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$r_buff1_thd1) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$w_buff0) + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EAX + (long long )z$w_buff0_used >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0 >= 0LL) && (long long )__unbuffered_p2_EBX + (long long )z$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )z$w_buff0_used >= 0LL) && (long long )x + (long long )z$r_buff0_thd1 >= 0LL) && (long long )x + (long long )z$w_buff0 >= 0LL) && (long long )x + (long long )z$w_buff0_used >= 0LL) && (long long )y + (long long )z$r_buff0_thd1 >= 0LL) && (long long )y + (long long )z$w_buff0 >= 0LL) && (long long )y + (long long )z$w_buff0_used >= 0LL) && (long long )z + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z + (long long )z$w_buff0 >= 0LL) && (long long )z + (long long )z$w_buff0_used >= 0LL) && (long long )z$flush_delayed + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$flush_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$mem_tmp + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0 >= 0LL) && (long long )z$mem_tmp + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 + (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd1 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd2 + (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff1_thd3 + (long long )z$w_buff0_used >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0 >= 0LL) && (long long )z$read_delayed + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 + (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0_used + (long long )z$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )z$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )z$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )z$w_buff0_used >= 0LL) && (1LL + (long long )z$w_buff0_used) - (long long )z$w_buff1 >= 0LL) && (long long )__unbuffered_p2_EBX - (long long )z$mem_tmp >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff0_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd2 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$r_buff1_thd3 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$read_delayed >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff0_used >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff0_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1 >= 0LL) && (long long )z$r_buff1_thd1 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff0_used - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:26:48,384 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:26:48,384 INFO L106 edCorrectnessWitness]: ghost_update [L839-L839] multithreaded = 1; [2024-06-27 23:26:48,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:26:48,690 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:26:48,698 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:26:48,880 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:26:48,914 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:26:48,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48 WrapperNode [2024-06-27 23:26:48,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:26:48,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:26:48,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:26:48,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:26:48,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:48,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:48,996 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-27 23:26:48,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:26:48,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:26:48,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:26:48,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:26:49,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,051 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]. [2024-06-27 23:26:49,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:26:49,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:26:49,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:26:49,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:26:49,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (1/1) ... [2024-06-27 23:26:49,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:26:49,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:26:49,138 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) [2024-06-27 23:26:49,157 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 [2024-06-27 23:26:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:26:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:26:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:26:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:26:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:26:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:26:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:26:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:26:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:26:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:26:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:26:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:26:49,173 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:26:49,294 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:26:49,297 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:26:49,876 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:26:49,877 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:26:50,034 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:26:50,034 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:26:50,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:26:50 BoogieIcfgContainer [2024-06-27 23:26:50,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:26:50,037 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:26:50,037 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:26:50,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:26:50,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:26:46" (1/4) ... [2024-06-27 23:26:50,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489d4167 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:26:50, skipping insertion in model container [2024-06-27 23:26:50,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:26:48" (2/4) ... [2024-06-27 23:26:50,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489d4167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:26:50, skipping insertion in model container [2024-06-27 23:26:50,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:26:48" (3/4) ... [2024-06-27 23:26:50,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489d4167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:26:50, skipping insertion in model container [2024-06-27 23:26:50,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:26:50" (4/4) ... [2024-06-27 23:26:50,044 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 23:26:50,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:26:50,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:26:50,057 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:26:50,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:26:50,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 23:26:50,164 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-27 23:26:50,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:26:50,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:26:50,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 23:26:50,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-27 23:26:50,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:26:50,186 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;@72d45c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:26:50,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:26:50,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:26:50,191 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:26:50,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:26:50,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:50,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:26:50,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:50,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash 373697404, now seen corresponding path program 1 times [2024-06-27 23:26:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940521067] [2024-06-27 23:26:50,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:50,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:51,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940521067] [2024-06-27 23:26:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940521067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:51,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:26:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280274668] [2024-06-27 23:26:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:26:51,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:26:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:26:51,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-27 23:26:51,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 23:26:51,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:51,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-27 23:26:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:51,942 INFO L124 PetriNetUnfolderBase]: 868/1366 cut-off events. [2024-06-27 23:26:51,942 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 23:26:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2747 conditions, 1366 events. 868/1366 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6805 event pairs, 492 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 2735. Up to 1307 conditions per place. [2024-06-27 23:26:51,958 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-27 23:26:51,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 171 flow [2024-06-27 23:26:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:26:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:26:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 23:26:51,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-06-27 23:26:51,971 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 80 transitions. [2024-06-27 23:26:51,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 171 flow [2024-06-27 23:26:51,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:26:51,975 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-27 23:26:51,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-27 23:26:51,980 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-27 23:26:51,980 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-27 23:26:51,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-06-27 23:26:51,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:51,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:51,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:26:51,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:51,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:51,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1653924427, now seen corresponding path program 1 times [2024-06-27 23:26:51,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:51,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032802379] [2024-06-27 23:26:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:51,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032802379] [2024-06-27 23:26:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032802379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:52,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:52,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:26:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954261956] [2024-06-27 23:26:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:52,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:26:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:26:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:26:52,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-27 23:26:52,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-06-27 23:26:52,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:52,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-27 23:26:52,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:53,240 INFO L124 PetriNetUnfolderBase]: 873/1400 cut-off events. [2024-06-27 23:26:53,240 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-06-27 23:26:53,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1400 events. 873/1400 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6897 event pairs, 399 based on Foata normal form. 5/1401 useless extension candidates. Maximal degree in co-relation 3196. Up to 1299 conditions per place. [2024-06-27 23:26:53,249 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 23:26:53,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 256 flow [2024-06-27 23:26:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:26:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:26:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-27 23:26:53,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-06-27 23:26:53,253 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 104 transitions. [2024-06-27 23:26:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 256 flow [2024-06-27 23:26:53,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:26:53,257 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 156 flow [2024-06-27 23:26:53,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 23:26:53,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-27 23:26:53,258 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 156 flow [2024-06-27 23:26:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) [2024-06-27 23:26:53,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:53,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:53,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:26:53,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:53,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash -283436140, now seen corresponding path program 1 times [2024-06-27 23:26:53,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647687861] [2024-06-27 23:26:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647687861] [2024-06-27 23:26:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647687861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:26:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690235584] [2024-06-27 23:26:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:26:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:54,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:26:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:26:54,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-27 23:26:54,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:54,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:54,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-27 23:26:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:55,202 INFO L124 PetriNetUnfolderBase]: 1391/2162 cut-off events. [2024-06-27 23:26:55,202 INFO L125 PetriNetUnfolderBase]: For 1258/1258 co-relation queries the response was YES. [2024-06-27 23:26:55,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5683 conditions, 2162 events. 1391/2162 cut-off events. For 1258/1258 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10493 event pairs, 405 based on Foata normal form. 7/2166 useless extension candidates. Maximal degree in co-relation 5668. Up to 1937 conditions per place. [2024-06-27 23:26:55,212 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 61 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2024-06-27 23:26:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 83 transitions, 437 flow [2024-06-27 23:26:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:26:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:26:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 23:26:55,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2024-06-27 23:26:55,214 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 156 flow. Second operand 6 states and 149 transitions. [2024-06-27 23:26:55,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 83 transitions, 437 flow [2024-06-27 23:26:55,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 420 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 23:26:55,217 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 244 flow [2024-06-27 23:26:55,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-06-27 23:26:55,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-27 23:26:55,219 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 244 flow [2024-06-27 23:26:55,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:55,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:55,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:26:55,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:55,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1521759228, now seen corresponding path program 1 times [2024-06-27 23:26:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:55,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512316825] [2024-06-27 23:26:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:55,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:56,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512316825] [2024-06-27 23:26:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512316825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:56,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:56,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:26:56,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829658742] [2024-06-27 23:26:56,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:56,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:26:56,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:56,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:26:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:26:57,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-27 23:26:57,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2024-06-27 23:26:57,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:57,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-27 23:26:57,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:57,553 INFO L124 PetriNetUnfolderBase]: 1457/2264 cut-off events. [2024-06-27 23:26:57,553 INFO L125 PetriNetUnfolderBase]: For 2835/2835 co-relation queries the response was YES. [2024-06-27 23:26:57,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6966 conditions, 2264 events. 1457/2264 cut-off events. For 2835/2835 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11161 event pairs, 307 based on Foata normal form. 26/2287 useless extension candidates. Maximal degree in co-relation 6947. Up to 1897 conditions per place. [2024-06-27 23:26:57,565 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 69 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-27 23:26:57,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 93 transitions, 550 flow [2024-06-27 23:26:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:26:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:26:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 23:26:57,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958188153310104 [2024-06-27 23:26:57,569 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 244 flow. Second operand 7 states and 171 transitions. [2024-06-27 23:26:57,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 93 transitions, 550 flow [2024-06-27 23:26:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 519 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:26:57,575 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 267 flow [2024-06-27 23:26:57,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 23:26:57,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-27 23:26:57,577 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 267 flow [2024-06-27 23:26:57,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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) [2024-06-27 23:26:57,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:57,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:57,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:26:57,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:57,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash 866207543, now seen corresponding path program 1 times [2024-06-27 23:26:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:57,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186629348] [2024-06-27 23:26:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:57,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:59,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:59,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186629348] [2024-06-27 23:26:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186629348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:59,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:26:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203848318] [2024-06-27 23:26:59,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:26:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:26:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:26:59,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:26:59,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2024-06-27 23:26:59,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:59,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:26:59,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:00,350 INFO L124 PetriNetUnfolderBase]: 1769/2701 cut-off events. [2024-06-27 23:27:00,351 INFO L125 PetriNetUnfolderBase]: For 4961/4961 co-relation queries the response was YES. [2024-06-27 23:27:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 2701 events. 1769/2701 cut-off events. For 4961/4961 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13043 event pairs, 1049 based on Foata normal form. 4/2696 useless extension candidates. Maximal degree in co-relation 8642. Up to 2597 conditions per place. [2024-06-27 23:27:00,364 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 59 selfloop transitions, 17 changer transitions 0/80 dead transitions. [2024-06-27 23:27:00,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 542 flow [2024-06-27 23:27:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 23:27:00,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-27 23:27:00,366 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 267 flow. Second operand 8 states and 134 transitions. [2024-06-27 23:27:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 542 flow [2024-06-27 23:27:00,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 498 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:00,374 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 360 flow [2024-06-27 23:27:00,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=360, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 23:27:00,376 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-27 23:27:00,376 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 360 flow [2024-06-27 23:27:00,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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) [2024-06-27 23:27:00,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:00,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:00,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:27:00,378 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:00,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1427139841, now seen corresponding path program 1 times [2024-06-27 23:27:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:00,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126978245] [2024-06-27 23:27:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:00,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:01,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:01,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126978245] [2024-06-27 23:27:01,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126978245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:01,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:01,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:27:01,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756456506] [2024-06-27 23:27:01,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:01,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:27:01,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:01,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:27:01,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:27:01,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:27:01,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 23:27:01,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:01,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:27:01,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:02,413 INFO L124 PetriNetUnfolderBase]: 2018/3032 cut-off events. [2024-06-27 23:27:02,413 INFO L125 PetriNetUnfolderBase]: For 7354/7354 co-relation queries the response was YES. [2024-06-27 23:27:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 3032 events. 2018/3032 cut-off events. For 7354/7354 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14230 event pairs, 1222 based on Foata normal form. 1/3032 useless extension candidates. Maximal degree in co-relation 10276. Up to 2995 conditions per place. [2024-06-27 23:27:02,434 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 58 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 23:27:02,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 532 flow [2024-06-27 23:27:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:27:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:27:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-27 23:27:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-27 23:27:02,436 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 360 flow. Second operand 5 states and 84 transitions. [2024-06-27 23:27:02,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 532 flow [2024-06-27 23:27:02,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 491 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:02,442 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 369 flow [2024-06-27 23:27:02,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-27 23:27:02,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-27 23:27:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 369 flow [2024-06-27 23:27:02,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 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) [2024-06-27 23:27:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:27:02,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:02,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash -679253226, now seen corresponding path program 1 times [2024-06-27 23:27:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906032007] [2024-06-27 23:27:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906032007] [2024-06-27 23:27:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906032007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:27:04,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017751568] [2024-06-27 23:27:04,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:04,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:27:04,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:27:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:27:04,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:27:04,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 369 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:04,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:04,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:27:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:04,699 INFO L124 PetriNetUnfolderBase]: 1817/2801 cut-off events. [2024-06-27 23:27:04,699 INFO L125 PetriNetUnfolderBase]: For 8602/8618 co-relation queries the response was YES. [2024-06-27 23:27:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 2801 events. 1817/2801 cut-off events. For 8602/8618 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14186 event pairs, 512 based on Foata normal form. 20/2806 useless extension candidates. Maximal degree in co-relation 9997. Up to 2406 conditions per place. [2024-06-27 23:27:04,720 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 69 selfloop transitions, 30 changer transitions 0/106 dead transitions. [2024-06-27 23:27:04,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 106 transitions, 785 flow [2024-06-27 23:27:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:04,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 23:27:04,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813008130081301 [2024-06-27 23:27:04,722 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 369 flow. Second operand 6 states and 143 transitions. [2024-06-27 23:27:04,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 106 transitions, 785 flow [2024-06-27 23:27:04,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 757 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:04,729 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 503 flow [2024-06-27 23:27:04,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=6, PETRI_FLOW=503, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-06-27 23:27:04,730 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-27 23:27:04,730 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 503 flow [2024-06-27 23:27:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:04,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:04,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:04,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:27:04,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:04,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash -150084156, now seen corresponding path program 2 times [2024-06-27 23:27:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382143322] [2024-06-27 23:27:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382143322] [2024-06-27 23:27:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382143322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:06,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:27:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139859602] [2024-06-27 23:27:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:06,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:27:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:06,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:27:06,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:27:06,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:27:06,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:06,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:06,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:27:06,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:07,058 INFO L124 PetriNetUnfolderBase]: 1847/2864 cut-off events. [2024-06-27 23:27:07,059 INFO L125 PetriNetUnfolderBase]: For 11489/11505 co-relation queries the response was YES. [2024-06-27 23:27:07,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11174 conditions, 2864 events. 1847/2864 cut-off events. For 11489/11505 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14463 event pairs, 532 based on Foata normal form. 20/2878 useless extension candidates. Maximal degree in co-relation 11146. Up to 2500 conditions per place. [2024-06-27 23:27:07,078 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 72 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2024-06-27 23:27:07,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 107 transitions, 869 flow [2024-06-27 23:27:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:07,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 23:27:07,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-06-27 23:27:07,081 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 503 flow. Second operand 6 states and 138 transitions. [2024-06-27 23:27:07,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 107 transitions, 869 flow [2024-06-27 23:27:07,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 840 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 23:27:07,094 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 634 flow [2024-06-27 23:27:07,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 23:27:07,095 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-27 23:27:07,095 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 634 flow [2024-06-27 23:27:07,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:07,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:27:07,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:07,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2010278522, now seen corresponding path program 1 times [2024-06-27 23:27:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182098789] [2024-06-27 23:27:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182098789] [2024-06-27 23:27:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182098789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:08,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869246439] [2024-06-27 23:27:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:08,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:08,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 23:27:08,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:08,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:09,328 INFO L124 PetriNetUnfolderBase]: 1979/3034 cut-off events. [2024-06-27 23:27:09,329 INFO L125 PetriNetUnfolderBase]: For 16295/16309 co-relation queries the response was YES. [2024-06-27 23:27:09,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 3034 events. 1979/3034 cut-off events. For 16295/16309 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14889 event pairs, 1033 based on Foata normal form. 2/3013 useless extension candidates. Maximal degree in co-relation 12622. Up to 2851 conditions per place. [2024-06-27 23:27:09,345 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 79 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-27 23:27:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 979 flow [2024-06-27 23:27:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 23:27:09,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-27 23:27:09,350 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 634 flow. Second operand 7 states and 128 transitions. [2024-06-27 23:27:09,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 979 flow [2024-06-27 23:27:09,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 108 transitions, 901 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:09,368 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 729 flow [2024-06-27 23:27:09,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-27 23:27:09,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-27 23:27:09,369 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 729 flow [2024-06-27 23:27:09,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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) [2024-06-27 23:27:09,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:09,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:09,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:27:09,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:09,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:09,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1291660321, now seen corresponding path program 1 times [2024-06-27 23:27:09,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924267651] [2024-06-27 23:27:09,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:09,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924267651] [2024-06-27 23:27:11,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924267651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:11,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:11,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:11,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994038094] [2024-06-27 23:27:11,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:11,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:11,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:11,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:27:11,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 729 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:11,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:11,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:27:11,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:11,948 INFO L124 PetriNetUnfolderBase]: 2096/3148 cut-off events. [2024-06-27 23:27:11,948 INFO L125 PetriNetUnfolderBase]: For 16978/16978 co-relation queries the response was YES. [2024-06-27 23:27:11,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13371 conditions, 3148 events. 2096/3148 cut-off events. For 16978/16978 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14791 event pairs, 1133 based on Foata normal form. 3/3150 useless extension candidates. Maximal degree in co-relation 13336. Up to 3101 conditions per place. [2024-06-27 23:27:11,967 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 87 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-27 23:27:11,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 103 transitions, 977 flow [2024-06-27 23:27:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 23:27:11,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983739837398374 [2024-06-27 23:27:11,969 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 729 flow. Second operand 6 states and 98 transitions. [2024-06-27 23:27:11,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 103 transitions, 977 flow [2024-06-27 23:27:11,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 103 transitions, 938 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:11,983 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 752 flow [2024-06-27 23:27:11,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2024-06-27 23:27:11,984 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-06-27 23:27:11,984 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 752 flow [2024-06-27 23:27:11,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:11,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:11,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:27:11,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:11,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 417898764, now seen corresponding path program 1 times [2024-06-27 23:27:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:11,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471725320] [2024-06-27 23:27:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471725320] [2024-06-27 23:27:13,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471725320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:13,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:13,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:13,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262147383] [2024-06-27 23:27:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:14,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:27:14,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 93 transitions, 752 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:14,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:14,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:27:14,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:14,709 INFO L124 PetriNetUnfolderBase]: 1976/3077 cut-off events. [2024-06-27 23:27:14,709 INFO L125 PetriNetUnfolderBase]: For 20205/20230 co-relation queries the response was YES. [2024-06-27 23:27:14,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13696 conditions, 3077 events. 1976/3077 cut-off events. For 20205/20230 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15954 event pairs, 386 based on Foata normal form. 40/3099 useless extension candidates. Maximal degree in co-relation 13658. Up to 2153 conditions per place. [2024-06-27 23:27:14,726 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 89 selfloop transitions, 43 changer transitions 0/140 dead transitions. [2024-06-27 23:27:14,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 140 transitions, 1308 flow [2024-06-27 23:27:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 23:27:14,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-06-27 23:27:14,729 INFO L175 Difference]: Start difference. First operand has 83 places, 93 transitions, 752 flow. Second operand 7 states and 168 transitions. [2024-06-27 23:27:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 140 transitions, 1308 flow [2024-06-27 23:27:14,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 1274 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:14,748 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 840 flow [2024-06-27 23:27:14,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=840, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-06-27 23:27:14,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2024-06-27 23:27:14,749 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 840 flow [2024-06-27 23:27:14,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:14,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:14,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:14,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:27:14,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:14,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1505304610, now seen corresponding path program 2 times [2024-06-27 23:27:14,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:14,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050302505] [2024-06-27 23:27:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:14,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:16,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:16,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050302505] [2024-06-27 23:27:16,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050302505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:16,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:16,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:16,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932493397] [2024-06-27 23:27:16,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:16,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:16,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:27:16,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:16,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:16,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:27:16,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:17,342 INFO L124 PetriNetUnfolderBase]: 2052/3207 cut-off events. [2024-06-27 23:27:17,343 INFO L125 PetriNetUnfolderBase]: For 24440/24465 co-relation queries the response was YES. [2024-06-27 23:27:17,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 3207 events. 2052/3207 cut-off events. For 24440/24465 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16891 event pairs, 580 based on Foata normal form. 44/3239 useless extension candidates. Maximal degree in co-relation 14713. Up to 2624 conditions per place. [2024-06-27 23:27:17,359 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 87 selfloop transitions, 41 changer transitions 0/136 dead transitions. [2024-06-27 23:27:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1330 flow [2024-06-27 23:27:17,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 23:27:17,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 23:27:17,362 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 840 flow. Second operand 7 states and 164 transitions. [2024-06-27 23:27:17,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1330 flow [2024-06-27 23:27:17,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 1278 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:17,381 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 895 flow [2024-06-27 23:27:17,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=895, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-06-27 23:27:17,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-27 23:27:17,382 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 895 flow [2024-06-27 23:27:17,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:17,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:17,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:17,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:27:17,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:17,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash -357639970, now seen corresponding path program 3 times [2024-06-27 23:27:17,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658211116] [2024-06-27 23:27:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:19,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:19,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658211116] [2024-06-27 23:27:19,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658211116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:19,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480042320] [2024-06-27 23:27:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:19,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:19,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:19,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:27:19,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 895 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:19,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:19,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:27:19,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:19,809 INFO L124 PetriNetUnfolderBase]: 2103/3300 cut-off events. [2024-06-27 23:27:19,809 INFO L125 PetriNetUnfolderBase]: For 27991/28016 co-relation queries the response was YES. [2024-06-27 23:27:19,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15558 conditions, 3300 events. 2103/3300 cut-off events. For 27991/28016 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17482 event pairs, 599 based on Foata normal form. 44/3337 useless extension candidates. Maximal degree in co-relation 15517. Up to 2794 conditions per place. [2024-06-27 23:27:19,829 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 90 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-06-27 23:27:19,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 1329 flow [2024-06-27 23:27:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 23:27:19,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554006968641115 [2024-06-27 23:27:19,831 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 895 flow. Second operand 7 states and 159 transitions. [2024-06-27 23:27:19,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 1329 flow [2024-06-27 23:27:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1246 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:19,858 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 907 flow [2024-06-27 23:27:19,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=907, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2024-06-27 23:27:19,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-27 23:27:19,859 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 907 flow [2024-06-27 23:27:19,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:19,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:19,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:27:19,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:19,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -947611310, now seen corresponding path program 1 times [2024-06-27 23:27:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649988604] [2024-06-27 23:27:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649988604] [2024-06-27 23:27:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649988604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:21,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:21,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:21,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777966468] [2024-06-27 23:27:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:21,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:21,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 907 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 23:27:21,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:21,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:21,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:22,832 INFO L124 PetriNetUnfolderBase]: 2467/3805 cut-off events. [2024-06-27 23:27:22,832 INFO L125 PetriNetUnfolderBase]: For 32592/32607 co-relation queries the response was YES. [2024-06-27 23:27:22,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18383 conditions, 3805 events. 2467/3805 cut-off events. For 32592/32607 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 19530 event pairs, 651 based on Foata normal form. 22/3817 useless extension candidates. Maximal degree in co-relation 18341. Up to 3251 conditions per place. [2024-06-27 23:27:22,854 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 110 selfloop transitions, 44 changer transitions 0/159 dead transitions. [2024-06-27 23:27:22,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1629 flow [2024-06-27 23:27:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 23:27:22,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:27:22,856 INFO L175 Difference]: Start difference. First operand has 92 places, 97 transitions, 907 flow. Second operand 8 states and 164 transitions. [2024-06-27 23:27:22,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1629 flow [2024-06-27 23:27:22,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 159 transitions, 1520 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:22,890 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1226 flow [2024-06-27 23:27:22,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1226, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-27 23:27:22,891 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 23:27:22,891 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1226 flow [2024-06-27 23:27:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 23:27:22,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:22,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:22,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:27:22,892 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:22,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2109785032, now seen corresponding path program 1 times [2024-06-27 23:27:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:22,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188263981] [2024-06-27 23:27:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:24,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:24,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188263981] [2024-06-27 23:27:24,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188263981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:24,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:24,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:24,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827217539] [2024-06-27 23:27:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:24,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:24,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:27:24,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1226 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:24,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:24,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:27:24,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:25,120 INFO L124 PetriNetUnfolderBase]: 2424/3734 cut-off events. [2024-06-27 23:27:25,120 INFO L125 PetriNetUnfolderBase]: For 34330/34449 co-relation queries the response was YES. [2024-06-27 23:27:25,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18869 conditions, 3734 events. 2424/3734 cut-off events. For 34330/34449 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 19024 event pairs, 738 based on Foata normal form. 35/3730 useless extension candidates. Maximal degree in co-relation 18822. Up to 3418 conditions per place. [2024-06-27 23:27:25,144 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 110 selfloop transitions, 31 changer transitions 0/162 dead transitions. [2024-06-27 23:27:25,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 1845 flow [2024-06-27 23:27:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-27 23:27:25,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:27:25,160 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1226 flow. Second operand 6 states and 123 transitions. [2024-06-27 23:27:25,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 1845 flow [2024-06-27 23:27:25,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 162 transitions, 1756 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 23:27:25,194 INFO L231 Difference]: Finished difference. Result has 106 places, 139 transitions, 1439 flow [2024-06-27 23:27:25,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1439, PETRI_PLACES=106, PETRI_TRANSITIONS=139} [2024-06-27 23:27:25,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-27 23:27:25,196 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 139 transitions, 1439 flow [2024-06-27 23:27:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:25,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:25,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:25,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:27:25,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:25,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 109505498, now seen corresponding path program 2 times [2024-06-27 23:27:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305921133] [2024-06-27 23:27:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305921133] [2024-06-27 23:27:26,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305921133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:26,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513817904] [2024-06-27 23:27:26,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:26,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:27,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:27,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:27,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:27,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:27,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:27,842 INFO L124 PetriNetUnfolderBase]: 2643/4062 cut-off events. [2024-06-27 23:27:27,842 INFO L125 PetriNetUnfolderBase]: For 46641/46664 co-relation queries the response was YES. [2024-06-27 23:27:27,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21678 conditions, 4062 events. 2643/4062 cut-off events. For 46641/46664 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21113 event pairs, 1176 based on Foata normal form. 10/4038 useless extension candidates. Maximal degree in co-relation 21627. Up to 3587 conditions per place. [2024-06-27 23:27:27,868 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 134 selfloop transitions, 68 changer transitions 0/210 dead transitions. [2024-06-27 23:27:27,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 210 transitions, 2476 flow [2024-06-27 23:27:27,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:27,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:27,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 23:27:27,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-27 23:27:27,870 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 1439 flow. Second operand 9 states and 166 transitions. [2024-06-27 23:27:27,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 210 transitions, 2476 flow [2024-06-27 23:27:27,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 210 transitions, 2452 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-06-27 23:27:27,924 INFO L231 Difference]: Finished difference. Result has 118 places, 179 transitions, 2178 flow [2024-06-27 23:27:27,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2178, PETRI_PLACES=118, PETRI_TRANSITIONS=179} [2024-06-27 23:27:27,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-27 23:27:27,925 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 179 transitions, 2178 flow [2024-06-27 23:27:27,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:27,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:27,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:27,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:27:27,925 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -394655264, now seen corresponding path program 1 times [2024-06-27 23:27:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650148248] [2024-06-27 23:27:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:29,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650148248] [2024-06-27 23:27:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650148248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:29,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:29,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:27:29,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027654249] [2024-06-27 23:27:29,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:29,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:27:29,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:27:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:27:29,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:27:29,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 179 transitions, 2178 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:27:29,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:29,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:27:29,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:30,065 INFO L124 PetriNetUnfolderBase]: 2672/4128 cut-off events. [2024-06-27 23:27:30,065 INFO L125 PetriNetUnfolderBase]: For 52005/52235 co-relation queries the response was YES. [2024-06-27 23:27:30,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22834 conditions, 4128 events. 2672/4128 cut-off events. For 52005/52235 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21972 event pairs, 1252 based on Foata normal form. 52/4125 useless extension candidates. Maximal degree in co-relation 22776. Up to 3644 conditions per place. [2024-06-27 23:27:30,095 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 141 selfloop transitions, 47 changer transitions 0/218 dead transitions. [2024-06-27 23:27:30,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 218 transitions, 2874 flow [2024-06-27 23:27:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 23:27:30,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-27 23:27:30,097 INFO L175 Difference]: Start difference. First operand has 118 places, 179 transitions, 2178 flow. Second operand 7 states and 135 transitions. [2024-06-27 23:27:30,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 218 transitions, 2874 flow [2024-06-27 23:27:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2770 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:30,175 INFO L231 Difference]: Finished difference. Result has 125 places, 199 transitions, 2435 flow [2024-06-27 23:27:30,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2435, PETRI_PLACES=125, PETRI_TRANSITIONS=199} [2024-06-27 23:27:30,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-27 23:27:30,176 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 199 transitions, 2435 flow [2024-06-27 23:27:30,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:27:30,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:30,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:30,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:27:30,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:30,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1398204194, now seen corresponding path program 2 times [2024-06-27 23:27:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055453593] [2024-06-27 23:27:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055453593] [2024-06-27 23:27:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055453593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311994519] [2024-06-27 23:27:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:31,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:31,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:27:31,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 199 transitions, 2435 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:31,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:31,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:27:31,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:32,210 INFO L124 PetriNetUnfolderBase]: 2644/4084 cut-off events. [2024-06-27 23:27:32,211 INFO L125 PetriNetUnfolderBase]: For 55757/55979 co-relation queries the response was YES. [2024-06-27 23:27:32,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23728 conditions, 4084 events. 2644/4084 cut-off events. For 55757/55979 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21655 event pairs, 1235 based on Foata normal form. 44/4073 useless extension candidates. Maximal degree in co-relation 23664. Up to 3723 conditions per place. [2024-06-27 23:27:32,243 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 142 selfloop transitions, 40 changer transitions 0/212 dead transitions. [2024-06-27 23:27:32,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 212 transitions, 2905 flow [2024-06-27 23:27:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-27 23:27:32,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 23:27:32,245 INFO L175 Difference]: Start difference. First operand has 125 places, 199 transitions, 2435 flow. Second operand 6 states and 114 transitions. [2024-06-27 23:27:32,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 212 transitions, 2905 flow [2024-06-27 23:27:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 212 transitions, 2878 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 23:27:32,333 INFO L231 Difference]: Finished difference. Result has 130 places, 199 transitions, 2504 flow [2024-06-27 23:27:32,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2504, PETRI_PLACES=130, PETRI_TRANSITIONS=199} [2024-06-27 23:27:32,334 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-27 23:27:32,334 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 199 transitions, 2504 flow [2024-06-27 23:27:32,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:32,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:32,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:32,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:27:32,335 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:32,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -422197514, now seen corresponding path program 3 times [2024-06-27 23:27:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16422425] [2024-06-27 23:27:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16422425] [2024-06-27 23:27:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16422425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:34,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379882660] [2024-06-27 23:27:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:34,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:34,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 199 transitions, 2504 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:34,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:34,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:34,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:35,272 INFO L124 PetriNetUnfolderBase]: 2864/4375 cut-off events. [2024-06-27 23:27:35,272 INFO L125 PetriNetUnfolderBase]: For 66391/66427 co-relation queries the response was YES. [2024-06-27 23:27:35,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26062 conditions, 4375 events. 2864/4375 cut-off events. For 66391/66427 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22985 event pairs, 1235 based on Foata normal form. 4/4343 useless extension candidates. Maximal degree in co-relation 25995. Up to 4109 conditions per place. [2024-06-27 23:27:35,297 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 191 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2024-06-27 23:27:35,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 239 transitions, 3283 flow [2024-06-27 23:27:35,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 23:27:35,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 23:27:35,312 INFO L175 Difference]: Start difference. First operand has 130 places, 199 transitions, 2504 flow. Second operand 9 states and 153 transitions. [2024-06-27 23:27:35,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 239 transitions, 3283 flow [2024-06-27 23:27:35,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 239 transitions, 3223 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:35,384 INFO L231 Difference]: Finished difference. Result has 136 places, 213 transitions, 2773 flow [2024-06-27 23:27:35,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2773, PETRI_PLACES=136, PETRI_TRANSITIONS=213} [2024-06-27 23:27:35,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-27 23:27:35,385 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 213 transitions, 2773 flow [2024-06-27 23:27:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:35,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:27:35,388 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:35,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1514565624, now seen corresponding path program 4 times [2024-06-27 23:27:35,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547180070] [2024-06-27 23:27:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:37,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547180070] [2024-06-27 23:27:37,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547180070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:37,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:37,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47786545] [2024-06-27 23:27:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:37,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:37,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:37,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:37,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 213 transitions, 2773 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:37,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:37,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:37,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:38,118 INFO L124 PetriNetUnfolderBase]: 2899/4427 cut-off events. [2024-06-27 23:27:38,118 INFO L125 PetriNetUnfolderBase]: For 73311/73349 co-relation queries the response was YES. [2024-06-27 23:27:38,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26952 conditions, 4427 events. 2899/4427 cut-off events. For 73311/73349 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23248 event pairs, 1241 based on Foata normal form. 4/4395 useless extension candidates. Maximal degree in co-relation 26883. Up to 4190 conditions per place. [2024-06-27 23:27:38,155 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 200 selfloop transitions, 34 changer transitions 0/244 dead transitions. [2024-06-27 23:27:38,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 244 transitions, 3459 flow [2024-06-27 23:27:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 23:27:38,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-27 23:27:38,158 INFO L175 Difference]: Start difference. First operand has 136 places, 213 transitions, 2773 flow. Second operand 9 states and 152 transitions. [2024-06-27 23:27:38,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 244 transitions, 3459 flow [2024-06-27 23:27:38,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 244 transitions, 3358 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:38,277 INFO L231 Difference]: Finished difference. Result has 142 places, 221 transitions, 2915 flow [2024-06-27 23:27:38,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2706, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2915, PETRI_PLACES=142, PETRI_TRANSITIONS=221} [2024-06-27 23:27:38,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-27 23:27:38,277 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 221 transitions, 2915 flow [2024-06-27 23:27:38,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:38,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:38,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:38,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:27:38,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:38,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash 281639752, now seen corresponding path program 5 times [2024-06-27 23:27:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080571893] [2024-06-27 23:27:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080571893] [2024-06-27 23:27:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080571893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:39,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:39,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:39,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827005366] [2024-06-27 23:27:39,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:39,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:39,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:39,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:39,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:39,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:39,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 221 transitions, 2915 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:39,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:39,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:39,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:40,604 INFO L124 PetriNetUnfolderBase]: 2916/4455 cut-off events. [2024-06-27 23:27:40,604 INFO L125 PetriNetUnfolderBase]: For 80096/80136 co-relation queries the response was YES. [2024-06-27 23:27:40,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27609 conditions, 4455 events. 2916/4455 cut-off events. For 80096/80136 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23367 event pairs, 1229 based on Foata normal form. 4/4423 useless extension candidates. Maximal degree in co-relation 27538. Up to 4238 conditions per place. [2024-06-27 23:27:40,639 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 217 selfloop transitions, 23 changer transitions 0/250 dead transitions. [2024-06-27 23:27:40,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 250 transitions, 3521 flow [2024-06-27 23:27:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:27:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:27:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 23:27:40,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40487804878048783 [2024-06-27 23:27:40,641 INFO L175 Difference]: Start difference. First operand has 142 places, 221 transitions, 2915 flow. Second operand 10 states and 166 transitions. [2024-06-27 23:27:40,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 250 transitions, 3521 flow [2024-06-27 23:27:40,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 250 transitions, 3436 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:40,764 INFO L231 Difference]: Finished difference. Result has 145 places, 223 transitions, 2925 flow [2024-06-27 23:27:40,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2925, PETRI_PLACES=145, PETRI_TRANSITIONS=223} [2024-06-27 23:27:40,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 23:27:40,765 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 223 transitions, 2925 flow [2024-06-27 23:27:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:40,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:40,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:27:40,766 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:40,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1269828126, now seen corresponding path program 6 times [2024-06-27 23:27:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:40,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795846507] [2024-06-27 23:27:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:40,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:42,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:42,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795846507] [2024-06-27 23:27:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795846507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:42,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:42,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546559996] [2024-06-27 23:27:42,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:42,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:42,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:42,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:42,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 223 transitions, 2925 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:42,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:42,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:42,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:43,261 INFO L124 PetriNetUnfolderBase]: 2908/4443 cut-off events. [2024-06-27 23:27:43,261 INFO L125 PetriNetUnfolderBase]: For 85446/85488 co-relation queries the response was YES. [2024-06-27 23:27:43,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27827 conditions, 4443 events. 2908/4443 cut-off events. For 85446/85488 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23363 event pairs, 1240 based on Foata normal form. 4/4411 useless extension candidates. Maximal degree in co-relation 27756. Up to 4219 conditions per place. [2024-06-27 23:27:43,294 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 212 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2024-06-27 23:27:43,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 253 transitions, 3559 flow [2024-06-27 23:27:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 23:27:43,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-27 23:27:43,296 INFO L175 Difference]: Start difference. First operand has 145 places, 223 transitions, 2925 flow. Second operand 9 states and 159 transitions. [2024-06-27 23:27:43,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 253 transitions, 3559 flow [2024-06-27 23:27:43,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 253 transitions, 3482 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:43,405 INFO L231 Difference]: Finished difference. Result has 147 places, 225 transitions, 2963 flow [2024-06-27 23:27:43,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2963, PETRI_PLACES=147, PETRI_TRANSITIONS=225} [2024-06-27 23:27:43,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-27 23:27:43,406 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 225 transitions, 2963 flow [2024-06-27 23:27:43,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:43,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:43,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:43,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:27:43,407 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:43,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1506291662, now seen corresponding path program 1 times [2024-06-27 23:27:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:43,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014518177] [2024-06-27 23:27:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014518177] [2024-06-27 23:27:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014518177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325881660] [2024-06-27 23:27:44,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:44,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:44,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 225 transitions, 2963 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 23:27:44,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:44,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:44,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:45,783 INFO L124 PetriNetUnfolderBase]: 2921/4462 cut-off events. [2024-06-27 23:27:45,783 INFO L125 PetriNetUnfolderBase]: For 92015/92065 co-relation queries the response was YES. [2024-06-27 23:27:45,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28321 conditions, 4462 events. 2921/4462 cut-off events. For 92015/92065 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23430 event pairs, 1237 based on Foata normal form. 6/4430 useless extension candidates. Maximal degree in co-relation 28249. Up to 4243 conditions per place. [2024-06-27 23:27:45,821 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 213 selfloop transitions, 33 changer transitions 0/256 dead transitions. [2024-06-27 23:27:45,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 256 transitions, 3648 flow [2024-06-27 23:27:45,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 23:27:45,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-27 23:27:45,823 INFO L175 Difference]: Start difference. First operand has 147 places, 225 transitions, 2963 flow. Second operand 8 states and 143 transitions. [2024-06-27 23:27:45,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 256 transitions, 3648 flow [2024-06-27 23:27:45,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 256 transitions, 3537 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:45,967 INFO L231 Difference]: Finished difference. Result has 149 places, 232 transitions, 3056 flow [2024-06-27 23:27:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3056, PETRI_PLACES=149, PETRI_TRANSITIONS=232} [2024-06-27 23:27:45,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-06-27 23:27:45,968 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 232 transitions, 3056 flow [2024-06-27 23:27:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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) [2024-06-27 23:27:45,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:45,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:27:45,968 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:45,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1386776354, now seen corresponding path program 3 times [2024-06-27 23:27:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514931606] [2024-06-27 23:27:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:47,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514931606] [2024-06-27 23:27:47,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514931606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:47,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:47,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941558060] [2024-06-27 23:27:47,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:47,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:47,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:47,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:47,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:47,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:27:47,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 232 transitions, 3056 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:47,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:47,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:27:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:47,895 INFO L124 PetriNetUnfolderBase]: 2716/4203 cut-off events. [2024-06-27 23:27:47,895 INFO L125 PetriNetUnfolderBase]: For 86472/86752 co-relation queries the response was YES. [2024-06-27 23:27:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25868 conditions, 4203 events. 2716/4203 cut-off events. For 86472/86752 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22316 event pairs, 1255 based on Foata normal form. 59/4218 useless extension candidates. Maximal degree in co-relation 25795. Up to 3882 conditions per place. [2024-06-27 23:27:47,933 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 181 selfloop transitions, 20 changer transitions 0/242 dead transitions. [2024-06-27 23:27:47,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 242 transitions, 3545 flow [2024-06-27 23:27:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 23:27:47,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-27 23:27:47,935 INFO L175 Difference]: Start difference. First operand has 149 places, 232 transitions, 3056 flow. Second operand 6 states and 107 transitions. [2024-06-27 23:27:47,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 242 transitions, 3545 flow [2024-06-27 23:27:48,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 242 transitions, 3491 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:48,047 INFO L231 Difference]: Finished difference. Result has 151 places, 233 transitions, 3066 flow [2024-06-27 23:27:48,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3066, PETRI_PLACES=151, PETRI_TRANSITIONS=233} [2024-06-27 23:27:48,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-27 23:27:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 233 transitions, 3066 flow [2024-06-27 23:27:48,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:48,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:48,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:27:48,048 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:48,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1392484322, now seen corresponding path program 1 times [2024-06-27 23:27:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:48,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046992417] [2024-06-27 23:27:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046992417] [2024-06-27 23:27:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046992417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7406127] [2024-06-27 23:27:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:49,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:27:49,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 233 transitions, 3066 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:49,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:49,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:27:49,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:50,495 INFO L124 PetriNetUnfolderBase]: 3031/4575 cut-off events. [2024-06-27 23:27:50,496 INFO L125 PetriNetUnfolderBase]: For 95021/95021 co-relation queries the response was YES. [2024-06-27 23:27:50,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28811 conditions, 4575 events. 3031/4575 cut-off events. For 95021/95021 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 23343 event pairs, 1331 based on Foata normal form. 1/4575 useless extension candidates. Maximal degree in co-relation 28736. Up to 4514 conditions per place. [2024-06-27 23:27:50,548 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 223 selfloop transitions, 21 changer transitions 0/247 dead transitions. [2024-06-27 23:27:50,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 247 transitions, 3677 flow [2024-06-27 23:27:50,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:27:50,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:27:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 23:27:50,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 23:27:50,550 INFO L175 Difference]: Start difference. First operand has 151 places, 233 transitions, 3066 flow. Second operand 6 states and 102 transitions. [2024-06-27 23:27:50,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 247 transitions, 3677 flow [2024-06-27 23:27:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 3613 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:50,700 INFO L231 Difference]: Finished difference. Result has 152 places, 236 transitions, 3094 flow [2024-06-27 23:27:50,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3094, PETRI_PLACES=152, PETRI_TRANSITIONS=236} [2024-06-27 23:27:50,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-27 23:27:50,700 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 236 transitions, 3094 flow [2024-06-27 23:27:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:50,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:50,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:50,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:27:50,701 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:50,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash -899687552, now seen corresponding path program 2 times [2024-06-27 23:27:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370797329] [2024-06-27 23:27:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370797329] [2024-06-27 23:27:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370797329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:52,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:27:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089120762] [2024-06-27 23:27:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:52,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:27:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:27:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:27:52,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:27:52,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 236 transitions, 3094 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:52,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:52,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:27:52,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:53,206 INFO L124 PetriNetUnfolderBase]: 3024/4565 cut-off events. [2024-06-27 23:27:53,207 INFO L125 PetriNetUnfolderBase]: For 99949/99949 co-relation queries the response was YES. [2024-06-27 23:27:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28900 conditions, 4565 events. 3024/4565 cut-off events. For 99949/99949 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23276 event pairs, 1330 based on Foata normal form. 1/4565 useless extension candidates. Maximal degree in co-relation 28825. Up to 4505 conditions per place. [2024-06-27 23:27:53,246 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 223 selfloop transitions, 22 changer transitions 0/248 dead transitions. [2024-06-27 23:27:53,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 248 transitions, 3618 flow [2024-06-27 23:27:53,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 23:27:53,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:27:53,247 INFO L175 Difference]: Start difference. First operand has 152 places, 236 transitions, 3094 flow. Second operand 8 states and 123 transitions. [2024-06-27 23:27:53,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 248 transitions, 3618 flow [2024-06-27 23:27:53,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 248 transitions, 3574 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:53,386 INFO L231 Difference]: Finished difference. Result has 157 places, 236 transitions, 3100 flow [2024-06-27 23:27:53,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3100, PETRI_PLACES=157, PETRI_TRANSITIONS=236} [2024-06-27 23:27:53,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-27 23:27:53,387 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 236 transitions, 3100 flow [2024-06-27 23:27:53,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2024-06-27 23:27:53,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:53,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:53,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:27:53,388 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:53,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1389895494, now seen corresponding path program 1 times [2024-06-27 23:27:53,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:53,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546850508] [2024-06-27 23:27:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:53,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:55,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546850508] [2024-06-27 23:27:55,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546850508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:55,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:55,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782077494] [2024-06-27 23:27:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:55,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:55,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 236 transitions, 3100 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:55,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:55,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:55,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:56,252 INFO L124 PetriNetUnfolderBase]: 3001/4580 cut-off events. [2024-06-27 23:27:56,253 INFO L125 PetriNetUnfolderBase]: For 107919/107959 co-relation queries the response was YES. [2024-06-27 23:27:56,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29700 conditions, 4580 events. 3001/4580 cut-off events. For 107919/107959 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23814 event pairs, 739 based on Foata normal form. 16/4587 useless extension candidates. Maximal degree in co-relation 29624. Up to 3874 conditions per place. [2024-06-27 23:27:56,294 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 177 selfloop transitions, 117 changer transitions 0/305 dead transitions. [2024-06-27 23:27:56,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 305 transitions, 4349 flow [2024-06-27 23:27:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 23:27:56,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2024-06-27 23:27:56,296 INFO L175 Difference]: Start difference. First operand has 157 places, 236 transitions, 3100 flow. Second operand 8 states and 165 transitions. [2024-06-27 23:27:56,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 305 transitions, 4349 flow [2024-06-27 23:27:56,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 305 transitions, 4283 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:27:56,497 INFO L231 Difference]: Finished difference. Result has 159 places, 265 transitions, 3873 flow [2024-06-27 23:27:56,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3873, PETRI_PLACES=159, PETRI_TRANSITIONS=265} [2024-06-27 23:27:56,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-27 23:27:56,498 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 265 transitions, 3873 flow [2024-06-27 23:27:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:56,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:56,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:56,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:27:56,499 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:56,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1395459684, now seen corresponding path program 2 times [2024-06-27 23:27:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347090317] [2024-06-27 23:27:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347090317] [2024-06-27 23:27:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347090317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:58,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794208562] [2024-06-27 23:27:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:58,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:27:58,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 265 transitions, 3873 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:58,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:58,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:27:58,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:59,300 INFO L124 PetriNetUnfolderBase]: 3088/4717 cut-off events. [2024-06-27 23:27:59,301 INFO L125 PetriNetUnfolderBase]: For 119797/119838 co-relation queries the response was YES. [2024-06-27 23:27:59,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31991 conditions, 4717 events. 3088/4717 cut-off events. For 119797/119838 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24715 event pairs, 723 based on Foata normal form. 18/4726 useless extension candidates. Maximal degree in co-relation 31914. Up to 3954 conditions per place. [2024-06-27 23:27:59,342 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 131 changer transitions 0/326 dead transitions. [2024-06-27 23:27:59,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 326 transitions, 5108 flow [2024-06-27 23:27:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 23:27:59,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969512195121951 [2024-06-27 23:27:59,344 INFO L175 Difference]: Start difference. First operand has 159 places, 265 transitions, 3873 flow. Second operand 8 states and 163 transitions. [2024-06-27 23:27:59,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 326 transitions, 5108 flow [2024-06-27 23:27:59,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 326 transitions, 4891 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 23:27:59,508 INFO L231 Difference]: Finished difference. Result has 165 places, 288 transitions, 4417 flow [2024-06-27 23:27:59,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3674, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4417, PETRI_PLACES=165, PETRI_TRANSITIONS=288} [2024-06-27 23:27:59,508 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-27 23:27:59,509 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 288 transitions, 4417 flow [2024-06-27 23:27:59,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:59,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:59,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:27:59,509 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:59,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1395467124, now seen corresponding path program 3 times [2024-06-27 23:27:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469959126] [2024-06-27 23:27:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:01,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:01,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469959126] [2024-06-27 23:28:01,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469959126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:01,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:01,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:01,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701778086] [2024-06-27 23:28:01,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:01,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:01,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:01,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:01,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 288 transitions, 4417 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:01,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:01,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:01,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:02,671 INFO L124 PetriNetUnfolderBase]: 3161/4826 cut-off events. [2024-06-27 23:28:02,671 INFO L125 PetriNetUnfolderBase]: For 132072/132113 co-relation queries the response was YES. [2024-06-27 23:28:02,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33243 conditions, 4826 events. 3161/4826 cut-off events. For 132072/132113 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25456 event pairs, 715 based on Foata normal form. 18/4827 useless extension candidates. Maximal degree in co-relation 33164. Up to 3909 conditions per place. [2024-06-27 23:28:02,712 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 182 selfloop transitions, 142 changer transitions 0/335 dead transitions. [2024-06-27 23:28:02,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 335 transitions, 5407 flow [2024-06-27 23:28:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 23:28:02,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:28:02,714 INFO L175 Difference]: Start difference. First operand has 165 places, 288 transitions, 4417 flow. Second operand 8 states and 164 transitions. [2024-06-27 23:28:02,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 335 transitions, 5407 flow [2024-06-27 23:28:02,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 335 transitions, 5186 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 23:28:02,919 INFO L231 Difference]: Finished difference. Result has 171 places, 297 transitions, 4663 flow [2024-06-27 23:28:02,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4663, PETRI_PLACES=171, PETRI_TRANSITIONS=297} [2024-06-27 23:28:02,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-27 23:28:02,920 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 297 transitions, 4663 flow [2024-06-27 23:28:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:02,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:02,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:02,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:28:02,921 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:02,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash 288632416, now seen corresponding path program 2 times [2024-06-27 23:28:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:02,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692436068] [2024-06-27 23:28:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:02,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692436068] [2024-06-27 23:28:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692436068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:04,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:04,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:04,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177698912] [2024-06-27 23:28:04,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:04,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:04,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:04,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:04,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:28:04,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 297 transitions, 4663 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:04,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:04,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:28:04,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:05,748 INFO L124 PetriNetUnfolderBase]: 2935/4543 cut-off events. [2024-06-27 23:28:05,749 INFO L125 PetriNetUnfolderBase]: For 136047/136333 co-relation queries the response was YES. [2024-06-27 23:28:05,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31267 conditions, 4543 events. 2935/4543 cut-off events. For 136047/136333 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24397 event pairs, 762 based on Foata normal form. 107/4599 useless extension candidates. Maximal degree in co-relation 31186. Up to 4026 conditions per place. [2024-06-27 23:28:05,793 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 202 selfloop transitions, 69 changer transitions 0/327 dead transitions. [2024-06-27 23:28:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 327 transitions, 5465 flow [2024-06-27 23:28:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 23:28:05,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-27 23:28:05,794 INFO L175 Difference]: Start difference. First operand has 171 places, 297 transitions, 4663 flow. Second operand 8 states and 149 transitions. [2024-06-27 23:28:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 327 transitions, 5465 flow [2024-06-27 23:28:06,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 327 transitions, 5271 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:06,005 INFO L231 Difference]: Finished difference. Result has 176 places, 307 transitions, 4740 flow [2024-06-27 23:28:06,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4740, PETRI_PLACES=176, PETRI_TRANSITIONS=307} [2024-06-27 23:28:06,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-27 23:28:06,006 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 307 transitions, 4740 flow [2024-06-27 23:28:06,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:06,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:06,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:06,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:28:06,006 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:06,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash -905866980, now seen corresponding path program 4 times [2024-06-27 23:28:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391023623] [2024-06-27 23:28:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:07,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391023623] [2024-06-27 23:28:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391023623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:07,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:07,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635924050] [2024-06-27 23:28:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:07,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:07,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:07,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 307 transitions, 4740 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:07,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:07,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:07,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:09,076 INFO L124 PetriNetUnfolderBase]: 3259/4976 cut-off events. [2024-06-27 23:28:09,076 INFO L125 PetriNetUnfolderBase]: For 154437/154476 co-relation queries the response was YES. [2024-06-27 23:28:09,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35796 conditions, 4976 events. 3259/4976 cut-off events. For 154437/154476 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26520 event pairs, 1283 based on Foata normal form. 8/4935 useless extension candidates. Maximal degree in co-relation 35711. Up to 4308 conditions per place. [2024-06-27 23:28:09,121 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 194 selfloop transitions, 151 changer transitions 0/356 dead transitions. [2024-06-27 23:28:09,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 356 transitions, 5957 flow [2024-06-27 23:28:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:28:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:28:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 23:28:09,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-27 23:28:09,123 INFO L175 Difference]: Start difference. First operand has 176 places, 307 transitions, 4740 flow. Second operand 9 states and 161 transitions. [2024-06-27 23:28:09,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 356 transitions, 5957 flow [2024-06-27 23:28:09,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 356 transitions, 5899 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 23:28:09,407 INFO L231 Difference]: Finished difference. Result has 186 places, 329 transitions, 5592 flow [2024-06-27 23:28:09,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5592, PETRI_PLACES=186, PETRI_TRANSITIONS=329} [2024-06-27 23:28:09,407 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-27 23:28:09,409 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 329 transitions, 5592 flow [2024-06-27 23:28:09,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:09,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:09,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:28:09,410 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:09,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash -900302790, now seen corresponding path program 5 times [2024-06-27 23:28:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674353031] [2024-06-27 23:28:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:11,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674353031] [2024-06-27 23:28:11,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674353031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:11,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881244378] [2024-06-27 23:28:11,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:11,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:11,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:11,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 329 transitions, 5592 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:11,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:11,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:11,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:12,695 INFO L124 PetriNetUnfolderBase]: 3312/5053 cut-off events. [2024-06-27 23:28:12,695 INFO L125 PetriNetUnfolderBase]: For 167117/167156 co-relation queries the response was YES. [2024-06-27 23:28:12,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37839 conditions, 5053 events. 3312/5053 cut-off events. For 167117/167156 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27026 event pairs, 1267 based on Foata normal form. 6/5010 useless extension candidates. Maximal degree in co-relation 37748. Up to 4428 conditions per place. [2024-06-27 23:28:12,742 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 223 selfloop transitions, 144 changer transitions 0/378 dead transitions. [2024-06-27 23:28:12,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 378 transitions, 6792 flow [2024-06-27 23:28:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 23:28:12,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4190687361419069 [2024-06-27 23:28:12,745 INFO L175 Difference]: Start difference. First operand has 186 places, 329 transitions, 5592 flow. Second operand 11 states and 189 transitions. [2024-06-27 23:28:12,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 378 transitions, 6792 flow [2024-06-27 23:28:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 378 transitions, 6576 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:13,047 INFO L231 Difference]: Finished difference. Result has 194 places, 346 transitions, 6054 flow [2024-06-27 23:28:13,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5385, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6054, PETRI_PLACES=194, PETRI_TRANSITIONS=346} [2024-06-27 23:28:13,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-27 23:28:13,048 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 346 transitions, 6054 flow [2024-06-27 23:28:13,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:13,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:13,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:13,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:28:13,048 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:13,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash -900295350, now seen corresponding path program 6 times [2024-06-27 23:28:13,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:13,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408702088] [2024-06-27 23:28:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:13,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:14,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:14,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408702088] [2024-06-27 23:28:14,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408702088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331731057] [2024-06-27 23:28:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:14,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:14,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 346 transitions, 6054 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:14,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:14,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:14,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:16,042 INFO L124 PetriNetUnfolderBase]: 3340/5094 cut-off events. [2024-06-27 23:28:16,042 INFO L125 PetriNetUnfolderBase]: For 178706/178745 co-relation queries the response was YES. [2024-06-27 23:28:16,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38609 conditions, 5094 events. 3340/5094 cut-off events. For 178706/178745 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 27224 event pairs, 1272 based on Foata normal form. 6/5051 useless extension candidates. Maximal degree in co-relation 38516. Up to 4203 conditions per place. [2024-06-27 23:28:16,087 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 203 selfloop transitions, 160 changer transitions 0/374 dead transitions. [2024-06-27 23:28:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 374 transitions, 6937 flow [2024-06-27 23:28:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:28:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:28:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 23:28:16,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-27 23:28:16,089 INFO L175 Difference]: Start difference. First operand has 194 places, 346 transitions, 6054 flow. Second operand 9 states and 159 transitions. [2024-06-27 23:28:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 374 transitions, 6937 flow [2024-06-27 23:28:16,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 374 transitions, 6654 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:16,417 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 6187 flow [2024-06-27 23:28:16,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6187, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2024-06-27 23:28:16,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-27 23:28:16,417 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 6187 flow [2024-06-27 23:28:16,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:16,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:16,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:16,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:28:16,418 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:16,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:16,418 INFO L85 PathProgramCache]: Analyzing trace with hash 761138766, now seen corresponding path program 7 times [2024-06-27 23:28:16,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:16,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207924000] [2024-06-27 23:28:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:16,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207924000] [2024-06-27 23:28:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207924000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655592187] [2024-06-27 23:28:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:17,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:18,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:18,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 6187 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:19,269 INFO L124 PetriNetUnfolderBase]: 3382/5160 cut-off events. [2024-06-27 23:28:19,269 INFO L125 PetriNetUnfolderBase]: For 194467/194506 co-relation queries the response was YES. [2024-06-27 23:28:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39720 conditions, 5160 events. 3382/5160 cut-off events. For 194467/194506 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27688 event pairs, 1306 based on Foata normal form. 6/5117 useless extension candidates. Maximal degree in co-relation 39626. Up to 4195 conditions per place. [2024-06-27 23:28:19,323 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 207 selfloop transitions, 158 changer transitions 0/376 dead transitions. [2024-06-27 23:28:19,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 376 transitions, 7235 flow [2024-06-27 23:28:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:28:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:28:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 23:28:19,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-27 23:28:19,326 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 6187 flow. Second operand 7 states and 134 transitions. [2024-06-27 23:28:19,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 376 transitions, 7235 flow [2024-06-27 23:28:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 376 transitions, 6880 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 23:28:19,709 INFO L231 Difference]: Finished difference. Result has 199 places, 354 transitions, 6305 flow [2024-06-27 23:28:19,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5832, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6305, PETRI_PLACES=199, PETRI_TRANSITIONS=354} [2024-06-27 23:28:19,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-27 23:28:19,710 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 354 transitions, 6305 flow [2024-06-27 23:28:19,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:19,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:19,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:19,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:28:19,710 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:19,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 761131326, now seen corresponding path program 8 times [2024-06-27 23:28:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:19,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962312480] [2024-06-27 23:28:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962312480] [2024-06-27 23:28:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962312480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:21,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399454507] [2024-06-27 23:28:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:21,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:21,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 354 transitions, 6305 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:21,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:21,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:21,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:22,854 INFO L124 PetriNetUnfolderBase]: 3374/5154 cut-off events. [2024-06-27 23:28:22,855 INFO L125 PetriNetUnfolderBase]: For 203943/203982 co-relation queries the response was YES. [2024-06-27 23:28:22,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39751 conditions, 5154 events. 3374/5154 cut-off events. For 203943/203982 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 27731 event pairs, 1309 based on Foata normal form. 6/5111 useless extension candidates. Maximal degree in co-relation 39657. Up to 4420 conditions per place. [2024-06-27 23:28:22,897 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 199 selfloop transitions, 166 changer transitions 0/376 dead transitions. [2024-06-27 23:28:22,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 376 transitions, 7131 flow [2024-06-27 23:28:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 23:28:22,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 23:28:22,899 INFO L175 Difference]: Start difference. First operand has 199 places, 354 transitions, 6305 flow. Second operand 8 states and 144 transitions. [2024-06-27 23:28:22,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 376 transitions, 7131 flow [2024-06-27 23:28:23,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 376 transitions, 6914 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 23:28:23,332 INFO L231 Difference]: Finished difference. Result has 204 places, 354 transitions, 6447 flow [2024-06-27 23:28:23,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6088, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6447, PETRI_PLACES=204, PETRI_TRANSITIONS=354} [2024-06-27 23:28:23,333 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-27 23:28:23,333 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 354 transitions, 6447 flow [2024-06-27 23:28:23,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:23,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:23,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:23,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:28:23,334 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:23,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1017639276, now seen corresponding path program 9 times [2024-06-27 23:28:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:23,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603494109] [2024-06-27 23:28:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:23,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:24,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:24,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603494109] [2024-06-27 23:28:24,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603494109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:24,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:24,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:24,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183542433] [2024-06-27 23:28:24,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:24,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:24,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:24,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:24,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 354 transitions, 6447 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:24,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:24,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:26,059 INFO L124 PetriNetUnfolderBase]: 3416/5221 cut-off events. [2024-06-27 23:28:26,059 INFO L125 PetriNetUnfolderBase]: For 217037/217076 co-relation queries the response was YES. [2024-06-27 23:28:26,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41177 conditions, 5221 events. 3416/5221 cut-off events. For 217037/217076 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28169 event pairs, 1326 based on Foata normal form. 6/5178 useless extension candidates. Maximal degree in co-relation 41081. Up to 4682 conditions per place. [2024-06-27 23:28:26,112 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 289 selfloop transitions, 86 changer transitions 0/386 dead transitions. [2024-06-27 23:28:26,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 386 transitions, 7562 flow [2024-06-27 23:28:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 23:28:26,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-27 23:28:26,114 INFO L175 Difference]: Start difference. First operand has 204 places, 354 transitions, 6447 flow. Second operand 8 states and 150 transitions. [2024-06-27 23:28:26,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 386 transitions, 7562 flow [2024-06-27 23:28:26,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 386 transitions, 7191 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:28:26,441 INFO L231 Difference]: Finished difference. Result has 205 places, 358 transitions, 6403 flow [2024-06-27 23:28:26,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6403, PETRI_PLACES=205, PETRI_TRANSITIONS=358} [2024-06-27 23:28:26,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-27 23:28:26,441 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 358 transitions, 6403 flow [2024-06-27 23:28:26,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:26,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:26,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:26,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:28:26,442 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:26,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1807747995, now seen corresponding path program 1 times [2024-06-27 23:28:26,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88194625] [2024-06-27 23:28:26,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:28,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:28,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88194625] [2024-06-27 23:28:28,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88194625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:28,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:28,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763477081] [2024-06-27 23:28:28,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:28,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:28,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:28,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 358 transitions, 6403 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:28,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:28,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:28,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:29,327 INFO L124 PetriNetUnfolderBase]: 3445/5265 cut-off events. [2024-06-27 23:28:29,328 INFO L125 PetriNetUnfolderBase]: For 224123/224162 co-relation queries the response was YES. [2024-06-27 23:28:29,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41423 conditions, 5265 events. 3445/5265 cut-off events. For 224123/224162 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28404 event pairs, 1317 based on Foata normal form. 2/5218 useless extension candidates. Maximal degree in co-relation 41326. Up to 4701 conditions per place. [2024-06-27 23:28:29,383 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 268 selfloop transitions, 109 changer transitions 0/388 dead transitions. [2024-06-27 23:28:29,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 388 transitions, 7317 flow [2024-06-27 23:28:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:28:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:28:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 23:28:29,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-27 23:28:29,387 INFO L175 Difference]: Start difference. First operand has 205 places, 358 transitions, 6403 flow. Second operand 7 states and 140 transitions. [2024-06-27 23:28:29,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 388 transitions, 7317 flow [2024-06-27 23:28:29,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 388 transitions, 7130 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:29,932 INFO L231 Difference]: Finished difference. Result has 208 places, 363 transitions, 6508 flow [2024-06-27 23:28:29,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6217, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6508, PETRI_PLACES=208, PETRI_TRANSITIONS=363} [2024-06-27 23:28:29,933 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-27 23:28:29,933 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 363 transitions, 6508 flow [2024-06-27 23:28:29,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:29,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:29,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:29,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:28:29,934 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:29,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1017631836, now seen corresponding path program 10 times [2024-06-27 23:28:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:29,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549495791] [2024-06-27 23:28:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:29,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:31,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549495791] [2024-06-27 23:28:31,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549495791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:31,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:31,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322234383] [2024-06-27 23:28:31,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:31,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:31,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 363 transitions, 6508 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:31,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:31,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:31,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:32,769 INFO L124 PetriNetUnfolderBase]: 3437/5242 cut-off events. [2024-06-27 23:28:32,769 INFO L125 PetriNetUnfolderBase]: For 230191/230237 co-relation queries the response was YES. [2024-06-27 23:28:32,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41784 conditions, 5242 events. 3437/5242 cut-off events. For 230191/230237 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 28150 event pairs, 1352 based on Foata normal form. 8/5202 useless extension candidates. Maximal degree in co-relation 41685. Up to 4994 conditions per place. [2024-06-27 23:28:32,820 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 340 selfloop transitions, 37 changer transitions 0/388 dead transitions. [2024-06-27 23:28:32,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 388 transitions, 7362 flow [2024-06-27 23:28:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 23:28:32,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 23:28:32,822 INFO L175 Difference]: Start difference. First operand has 208 places, 363 transitions, 6508 flow. Second operand 8 states and 144 transitions. [2024-06-27 23:28:32,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 388 transitions, 7362 flow [2024-06-27 23:28:33,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 388 transitions, 7163 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:33,252 INFO L231 Difference]: Finished difference. Result has 212 places, 363 transitions, 6390 flow [2024-06-27 23:28:33,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6390, PETRI_PLACES=212, PETRI_TRANSITIONS=363} [2024-06-27 23:28:33,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-27 23:28:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 363 transitions, 6390 flow [2024-06-27 23:28:33,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:28:33,253 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1026836046, now seen corresponding path program 11 times [2024-06-27 23:28:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762043412] [2024-06-27 23:28:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:34,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:34,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762043412] [2024-06-27 23:28:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762043412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:34,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:34,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96776248] [2024-06-27 23:28:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:34,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:34,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:28:34,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 363 transitions, 6390 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:34,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:34,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:28:34,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:35,774 INFO L124 PetriNetUnfolderBase]: 3429/5230 cut-off events. [2024-06-27 23:28:35,775 INFO L125 PetriNetUnfolderBase]: For 236900/236943 co-relation queries the response was YES. [2024-06-27 23:28:35,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41273 conditions, 5230 events. 3429/5230 cut-off events. For 236900/236943 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 27997 event pairs, 1336 based on Foata normal form. 6/5187 useless extension candidates. Maximal degree in co-relation 41173. Up to 4981 conditions per place. [2024-06-27 23:28:35,832 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 357 selfloop transitions, 22 changer transitions 0/390 dead transitions. [2024-06-27 23:28:35,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 390 transitions, 7306 flow [2024-06-27 23:28:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:28:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:28:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 23:28:35,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-27 23:28:35,834 INFO L175 Difference]: Start difference. First operand has 212 places, 363 transitions, 6390 flow. Second operand 9 states and 151 transitions. [2024-06-27 23:28:35,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 390 transitions, 7306 flow [2024-06-27 23:28:36,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 390 transitions, 7237 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:28:36,270 INFO L231 Difference]: Finished difference. Result has 215 places, 365 transitions, 6452 flow [2024-06-27 23:28:36,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6452, PETRI_PLACES=215, PETRI_TRANSITIONS=365} [2024-06-27 23:28:36,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-27 23:28:36,272 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 365 transitions, 6452 flow [2024-06-27 23:28:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:36,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:36,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:28:36,273 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash -384466184, now seen corresponding path program 3 times [2024-06-27 23:28:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229958353] [2024-06-27 23:28:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:37,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:37,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229958353] [2024-06-27 23:28:37,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229958353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:37,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:37,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:37,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327406453] [2024-06-27 23:28:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:37,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:37,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:37,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:28:37,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 365 transitions, 6452 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:37,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:37,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:28:37,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:38,637 INFO L124 PetriNetUnfolderBase]: 3159/4907 cut-off events. [2024-06-27 23:28:38,638 INFO L125 PetriNetUnfolderBase]: For 245610/246004 co-relation queries the response was YES. [2024-06-27 23:28:38,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38682 conditions, 4907 events. 3159/4907 cut-off events. For 245610/246004 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 27131 event pairs, 1317 based on Foata normal form. 105/4931 useless extension candidates. Maximal degree in co-relation 38581. Up to 4536 conditions per place. [2024-06-27 23:28:38,693 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 29 changer transitions 0/382 dead transitions. [2024-06-27 23:28:38,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 382 transitions, 7266 flow [2024-06-27 23:28:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:28:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:28:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 23:28:38,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:28:38,695 INFO L175 Difference]: Start difference. First operand has 215 places, 365 transitions, 6452 flow. Second operand 7 states and 123 transitions. [2024-06-27 23:28:38,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 382 transitions, 7266 flow [2024-06-27 23:28:39,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 382 transitions, 7153 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 23:28:39,226 INFO L231 Difference]: Finished difference. Result has 215 places, 370 transitions, 6477 flow [2024-06-27 23:28:39,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6339, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6477, PETRI_PLACES=215, PETRI_TRANSITIONS=370} [2024-06-27 23:28:39,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-27 23:28:39,236 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 370 transitions, 6477 flow [2024-06-27 23:28:39,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:39,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:39,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:39,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:28:39,237 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash -40392224, now seen corresponding path program 4 times [2024-06-27 23:28:39,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:39,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330468194] [2024-06-27 23:28:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:39,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:40,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:40,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330468194] [2024-06-27 23:28:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330468194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:40,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:40,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:40,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324127608] [2024-06-27 23:28:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:40,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:40,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:28:40,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 370 transitions, 6477 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:40,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:40,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:28:40,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:41,617 INFO L124 PetriNetUnfolderBase]: 3151/4895 cut-off events. [2024-06-27 23:28:41,617 INFO L125 PetriNetUnfolderBase]: For 243908/244254 co-relation queries the response was YES. [2024-06-27 23:28:41,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38517 conditions, 4895 events. 3151/4895 cut-off events. For 243908/244254 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27053 event pairs, 1313 based on Foata normal form. 99/4915 useless extension candidates. Maximal degree in co-relation 38415. Up to 4527 conditions per place. [2024-06-27 23:28:41,663 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 290 selfloop transitions, 30 changer transitions 0/382 dead transitions. [2024-06-27 23:28:41,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 382 transitions, 7235 flow [2024-06-27 23:28:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:28:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:28:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 23:28:41,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:28:41,665 INFO L175 Difference]: Start difference. First operand has 215 places, 370 transitions, 6477 flow. Second operand 7 states and 123 transitions. [2024-06-27 23:28:41,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 382 transitions, 7235 flow [2024-06-27 23:28:42,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 382 transitions, 7160 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:28:42,024 INFO L231 Difference]: Finished difference. Result has 217 places, 372 transitions, 6480 flow [2024-06-27 23:28:42,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6402, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6480, PETRI_PLACES=217, PETRI_TRANSITIONS=372} [2024-06-27 23:28:42,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-27 23:28:42,025 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 372 transitions, 6480 flow [2024-06-27 23:28:42,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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) [2024-06-27 23:28:42,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:42,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:28:42,026 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:42,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash -217459388, now seen corresponding path program 1 times [2024-06-27 23:28:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:42,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672491992] [2024-06-27 23:28:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:42,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672491992] [2024-06-27 23:28:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672491992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:43,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706267310] [2024-06-27 23:28:43,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:43,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:43,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:43,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:28:43,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 372 transitions, 6480 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:43,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:43,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:28:43,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:45,046 INFO L124 PetriNetUnfolderBase]: 3596/5432 cut-off events. [2024-06-27 23:28:45,046 INFO L125 PetriNetUnfolderBase]: For 251014/251014 co-relation queries the response was YES. [2024-06-27 23:28:45,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42522 conditions, 5432 events. 3596/5432 cut-off events. For 251014/251014 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28689 event pairs, 1444 based on Foata normal form. 2/5433 useless extension candidates. Maximal degree in co-relation 42419. Up to 5341 conditions per place. [2024-06-27 23:28:45,103 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 366 selfloop transitions, 24 changer transitions 0/393 dead transitions. [2024-06-27 23:28:45,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 393 transitions, 7379 flow [2024-06-27 23:28:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 23:28:45,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-27 23:28:45,105 INFO L175 Difference]: Start difference. First operand has 217 places, 372 transitions, 6480 flow. Second operand 8 states and 126 transitions. [2024-06-27 23:28:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 393 transitions, 7379 flow [2024-06-27 23:28:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 393 transitions, 7339 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:28:45,511 INFO L231 Difference]: Finished difference. Result has 222 places, 378 transitions, 6578 flow [2024-06-27 23:28:45,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6442, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6578, PETRI_PLACES=222, PETRI_TRANSITIONS=378} [2024-06-27 23:28:45,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 180 predicate places. [2024-06-27 23:28:45,512 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 378 transitions, 6578 flow [2024-06-27 23:28:45,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:45,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:45,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:45,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:28:45,513 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:45,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash -46636988, now seen corresponding path program 2 times [2024-06-27 23:28:45,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:45,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397251493] [2024-06-27 23:28:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:45,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397251493] [2024-06-27 23:28:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397251493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710919197] [2024-06-27 23:28:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:47,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:47,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:28:47,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 378 transitions, 6578 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:47,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:47,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:28:47,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:48,541 INFO L124 PetriNetUnfolderBase]: 3606/5446 cut-off events. [2024-06-27 23:28:48,542 INFO L125 PetriNetUnfolderBase]: For 260090/260090 co-relation queries the response was YES. [2024-06-27 23:28:48,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43235 conditions, 5446 events. 3606/5446 cut-off events. For 260090/260090 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28790 event pairs, 1445 based on Foata normal form. 2/5447 useless extension candidates. Maximal degree in co-relation 43130. Up to 5329 conditions per place. [2024-06-27 23:28:48,593 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 362 selfloop transitions, 35 changer transitions 0/400 dead transitions. [2024-06-27 23:28:48,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 400 transitions, 7592 flow [2024-06-27 23:28:48,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 23:28:48,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-27 23:28:48,594 INFO L175 Difference]: Start difference. First operand has 222 places, 378 transitions, 6578 flow. Second operand 8 states and 127 transitions. [2024-06-27 23:28:48,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 400 transitions, 7592 flow [2024-06-27 23:28:49,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 400 transitions, 7540 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:28:49,053 INFO L231 Difference]: Finished difference. Result has 225 places, 384 transitions, 6681 flow [2024-06-27 23:28:49,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6526, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6681, PETRI_PLACES=225, PETRI_TRANSITIONS=384} [2024-06-27 23:28:49,054 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-06-27 23:28:49,054 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 384 transitions, 6681 flow [2024-06-27 23:28:49,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:49,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:49,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:28:49,055 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:49,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1669328320, now seen corresponding path program 1 times [2024-06-27 23:28:49,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823383732] [2024-06-27 23:28:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:50,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823383732] [2024-06-27 23:28:50,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823383732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:50,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:50,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938156633] [2024-06-27 23:28:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:50,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:28:50,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 384 transitions, 6681 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:50,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:50,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:28:50,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:52,082 INFO L124 PetriNetUnfolderBase]: 3621/5467 cut-off events. [2024-06-27 23:28:52,082 INFO L125 PetriNetUnfolderBase]: For 272543/272543 co-relation queries the response was YES. [2024-06-27 23:28:52,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43942 conditions, 5467 events. 3621/5467 cut-off events. For 272543/272543 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28844 event pairs, 1445 based on Foata normal form. 3/5469 useless extension candidates. Maximal degree in co-relation 43836. Up to 5356 conditions per place. [2024-06-27 23:28:52,148 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 370 selfloop transitions, 36 changer transitions 0/409 dead transitions. [2024-06-27 23:28:52,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 409 transitions, 7731 flow [2024-06-27 23:28:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:28:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:28:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 23:28:52,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-27 23:28:52,149 INFO L175 Difference]: Start difference. First operand has 225 places, 384 transitions, 6681 flow. Second operand 8 states and 130 transitions. [2024-06-27 23:28:52,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 409 transitions, 7731 flow [2024-06-27 23:28:52,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 409 transitions, 7677 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 23:28:52,695 INFO L231 Difference]: Finished difference. Result has 229 places, 392 transitions, 6810 flow [2024-06-27 23:28:52,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6627, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6810, PETRI_PLACES=229, PETRI_TRANSITIONS=392} [2024-06-27 23:28:52,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 23:28:52,696 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 392 transitions, 6810 flow [2024-06-27 23:28:52,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:52,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:52,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:28:52,696 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2120271396, now seen corresponding path program 2 times [2024-06-27 23:28:52,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490322497] [2024-06-27 23:28:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490322497] [2024-06-27 23:28:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490322497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:54,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515257735] [2024-06-27 23:28:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:54,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:54,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:28:54,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 392 transitions, 6810 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:54,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:54,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:28:54,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:55,974 INFO L124 PetriNetUnfolderBase]: 3636/5488 cut-off events. [2024-06-27 23:28:55,974 INFO L125 PetriNetUnfolderBase]: For 283885/283885 co-relation queries the response was YES. [2024-06-27 23:28:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44693 conditions, 5488 events. 3636/5488 cut-off events. For 283885/283885 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 28960 event pairs, 1441 based on Foata normal form. 3/5490 useless extension candidates. Maximal degree in co-relation 44585. Up to 5370 conditions per place. [2024-06-27 23:28:56,031 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 369 selfloop transitions, 50 changer transitions 0/422 dead transitions. [2024-06-27 23:28:56,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 422 transitions, 7946 flow [2024-06-27 23:28:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 23:28:56,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-27 23:28:56,036 INFO L175 Difference]: Start difference. First operand has 229 places, 392 transitions, 6810 flow. Second operand 10 states and 155 transitions. [2024-06-27 23:28:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 422 transitions, 7946 flow [2024-06-27 23:28:56,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 422 transitions, 7901 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 23:28:56,548 INFO L231 Difference]: Finished difference. Result has 237 places, 403 transitions, 7127 flow [2024-06-27 23:28:56,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7127, PETRI_PLACES=237, PETRI_TRANSITIONS=403} [2024-06-27 23:28:56,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 23:28:56,549 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 403 transitions, 7127 flow [2024-06-27 23:28:56,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:56,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:56,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:56,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:28:56,549 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:56,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:56,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1675757224, now seen corresponding path program 3 times [2024-06-27 23:28:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:56,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869972849] [2024-06-27 23:28:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:56,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869972849] [2024-06-27 23:28:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869972849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267107145] [2024-06-27 23:28:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:58,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:28:58,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 403 transitions, 7127 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:58,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:58,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:28:58,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:59,696 INFO L124 PetriNetUnfolderBase]: 3630/5480 cut-off events. [2024-06-27 23:28:59,696 INFO L125 PetriNetUnfolderBase]: For 301030/301030 co-relation queries the response was YES. [2024-06-27 23:28:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45116 conditions, 5480 events. 3630/5480 cut-off events. For 301030/301030 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29006 event pairs, 1446 based on Foata normal form. 2/5481 useless extension candidates. Maximal degree in co-relation 45005. Up to 5366 conditions per place. [2024-06-27 23:28:59,757 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 381 selfloop transitions, 35 changer transitions 0/419 dead transitions. [2024-06-27 23:28:59,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 419 transitions, 8017 flow [2024-06-27 23:28:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:28:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:28:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 23:28:59,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36097560975609755 [2024-06-27 23:28:59,758 INFO L175 Difference]: Start difference. First operand has 237 places, 403 transitions, 7127 flow. Second operand 10 states and 148 transitions. [2024-06-27 23:28:59,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 419 transitions, 8017 flow [2024-06-27 23:29:00,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 419 transitions, 7748 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:00,373 INFO L231 Difference]: Finished difference. Result has 241 places, 403 transitions, 6934 flow [2024-06-27 23:29:00,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6858, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6934, PETRI_PLACES=241, PETRI_TRANSITIONS=403} [2024-06-27 23:29:00,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-27 23:29:00,373 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 403 transitions, 6934 flow [2024-06-27 23:29:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:00,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:29:00,374 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:00,374 INFO L85 PathProgramCache]: Analyzing trace with hash -40207712, now seen corresponding path program 3 times [2024-06-27 23:29:00,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485811558] [2024-06-27 23:29:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:02,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485811558] [2024-06-27 23:29:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485811558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632154408] [2024-06-27 23:29:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:02,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:02,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:02,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:29:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 403 transitions, 6934 flow. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:02,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:02,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:29:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:03,591 INFO L124 PetriNetUnfolderBase]: 3609/5450 cut-off events. [2024-06-27 23:29:03,591 INFO L125 PetriNetUnfolderBase]: For 295191/295191 co-relation queries the response was YES. [2024-06-27 23:29:03,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 5450 events. 3609/5450 cut-off events. For 295191/295191 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28826 event pairs, 1438 based on Foata normal form. 3/5452 useless extension candidates. Maximal degree in co-relation 44533. Up to 5337 conditions per place. [2024-06-27 23:29:03,653 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 373 selfloop transitions, 41 changer transitions 0/417 dead transitions. [2024-06-27 23:29:03,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 417 transitions, 7770 flow [2024-06-27 23:29:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 23:29:03,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-27 23:29:03,655 INFO L175 Difference]: Start difference. First operand has 241 places, 403 transitions, 6934 flow. Second operand 9 states and 146 transitions. [2024-06-27 23:29:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 417 transitions, 7770 flow [2024-06-27 23:29:04,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 417 transitions, 7651 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 23:29:04,221 INFO L231 Difference]: Finished difference. Result has 237 places, 397 transitions, 6837 flow [2024-06-27 23:29:04,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6837, PETRI_PLACES=237, PETRI_TRANSITIONS=397} [2024-06-27 23:29:04,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 23:29:04,222 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 397 transitions, 6837 flow [2024-06-27 23:29:04,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:04,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:04,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:04,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:29:04,227 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:04,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:04,227 INFO L85 PathProgramCache]: Analyzing trace with hash 546661899, now seen corresponding path program 1 times [2024-06-27 23:29:04,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:04,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370984698] [2024-06-27 23:29:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:06,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:06,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370984698] [2024-06-27 23:29:06,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370984698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:29:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697267604] [2024-06-27 23:29:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:06,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:29:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:06,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:29:06,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:29:07,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:29:07,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 397 transitions, 6837 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:07,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:07,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:29:07,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:08,613 INFO L124 PetriNetUnfolderBase]: 3539/5409 cut-off events. [2024-06-27 23:29:08,613 INFO L125 PetriNetUnfolderBase]: For 309015/309044 co-relation queries the response was YES. [2024-06-27 23:29:08,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44525 conditions, 5409 events. 3539/5409 cut-off events. For 309015/309044 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29310 event pairs, 759 based on Foata normal form. 18/5405 useless extension candidates. Maximal degree in co-relation 44415. Up to 4417 conditions per place. [2024-06-27 23:29:08,674 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 242 selfloop transitions, 177 changer transitions 0/434 dead transitions. [2024-06-27 23:29:08,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 434 transitions, 7872 flow [2024-06-27 23:29:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-27 23:29:08,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-27 23:29:08,676 INFO L175 Difference]: Start difference. First operand has 237 places, 397 transitions, 6837 flow. Second operand 9 states and 178 transitions. [2024-06-27 23:29:08,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 434 transitions, 7872 flow [2024-06-27 23:29:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 434 transitions, 7762 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:29:09,142 INFO L231 Difference]: Finished difference. Result has 237 places, 398 transitions, 7138 flow [2024-06-27 23:29:09,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6727, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7138, PETRI_PLACES=237, PETRI_TRANSITIONS=398} [2024-06-27 23:29:09,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 23:29:09,143 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 398 transitions, 7138 flow [2024-06-27 23:29:09,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:09,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:09,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:09,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:29:09,143 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:09,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1830601313, now seen corresponding path program 1 times [2024-06-27 23:29:09,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:09,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710365933] [2024-06-27 23:29:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:09,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:10,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:10,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710365933] [2024-06-27 23:29:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710365933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:10,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079463684] [2024-06-27 23:29:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:10,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:10,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 398 transitions, 7138 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:10,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:10,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:12,127 INFO L124 PetriNetUnfolderBase]: 3688/5572 cut-off events. [2024-06-27 23:29:12,127 INFO L125 PetriNetUnfolderBase]: For 315449/315460 co-relation queries the response was YES. [2024-06-27 23:29:12,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46230 conditions, 5572 events. 3688/5572 cut-off events. For 315449/315460 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 29795 event pairs, 1034 based on Foata normal form. 10/5579 useless extension candidates. Maximal degree in co-relation 46119. Up to 5132 conditions per place. [2024-06-27 23:29:12,196 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 357 selfloop transitions, 94 changer transitions 0/454 dead transitions. [2024-06-27 23:29:12,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 454 transitions, 8568 flow [2024-06-27 23:29:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 23:29:12,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-27 23:29:12,198 INFO L175 Difference]: Start difference. First operand has 237 places, 398 transitions, 7138 flow. Second operand 7 states and 147 transitions. [2024-06-27 23:29:12,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 454 transitions, 8568 flow [2024-06-27 23:29:12,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 454 transitions, 8173 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:12,814 INFO L231 Difference]: Finished difference. Result has 239 places, 425 transitions, 7339 flow [2024-06-27 23:29:12,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6743, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7339, PETRI_PLACES=239, PETRI_TRANSITIONS=425} [2024-06-27 23:29:12,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-27 23:29:12,814 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 425 transitions, 7339 flow [2024-06-27 23:29:12,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:12,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:12,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:12,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:29:12,815 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:12,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:12,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1811918009, now seen corresponding path program 2 times [2024-06-27 23:29:12,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:12,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31000867] [2024-06-27 23:29:12,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:12,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:14,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:14,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31000867] [2024-06-27 23:29:14,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31000867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:14,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010353098] [2024-06-27 23:29:14,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:14,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:14,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 425 transitions, 7339 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:15,939 INFO L124 PetriNetUnfolderBase]: 3728/5629 cut-off events. [2024-06-27 23:29:15,939 INFO L125 PetriNetUnfolderBase]: For 324938/324949 co-relation queries the response was YES. [2024-06-27 23:29:15,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47313 conditions, 5629 events. 3728/5629 cut-off events. For 324938/324949 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30096 event pairs, 1049 based on Foata normal form. 10/5636 useless extension candidates. Maximal degree in co-relation 47200. Up to 5254 conditions per place. [2024-06-27 23:29:16,002 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 358 selfloop transitions, 100 changer transitions 0/461 dead transitions. [2024-06-27 23:29:16,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 461 transitions, 8544 flow [2024-06-27 23:29:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 23:29:16,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-27 23:29:16,003 INFO L175 Difference]: Start difference. First operand has 239 places, 425 transitions, 7339 flow. Second operand 8 states and 148 transitions. [2024-06-27 23:29:16,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 461 transitions, 8544 flow [2024-06-27 23:29:16,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 461 transitions, 8362 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:16,634 INFO L231 Difference]: Finished difference. Result has 244 places, 439 transitions, 7567 flow [2024-06-27 23:29:16,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7193, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7567, PETRI_PLACES=244, PETRI_TRANSITIONS=439} [2024-06-27 23:29:16,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-27 23:29:16,635 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 439 transitions, 7567 flow [2024-06-27 23:29:16,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:16,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:16,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:16,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:29:16,636 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:16,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 773555747, now seen corresponding path program 2 times [2024-06-27 23:29:16,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:16,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698383419] [2024-06-27 23:29:16,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:16,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:18,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:18,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698383419] [2024-06-27 23:29:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698383419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:18,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:18,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:18,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327893436] [2024-06-27 23:29:18,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:18,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:18,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:18,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:18,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:18,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 439 transitions, 7567 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:18,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:18,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:18,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:20,064 INFO L124 PetriNetUnfolderBase]: 3714/5658 cut-off events. [2024-06-27 23:29:20,064 INFO L125 PetriNetUnfolderBase]: For 369593/369637 co-relation queries the response was YES. [2024-06-27 23:29:20,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48237 conditions, 5658 events. 3714/5658 cut-off events. For 369593/369637 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31020 event pairs, 984 based on Foata normal form. 16/5629 useless extension candidates. Maximal degree in co-relation 48123. Up to 4668 conditions per place. [2024-06-27 23:29:20,135 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 259 selfloop transitions, 197 changer transitions 0/481 dead transitions. [2024-06-27 23:29:20,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 481 transitions, 8721 flow [2024-06-27 23:29:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 23:29:20,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-27 23:29:20,141 INFO L175 Difference]: Start difference. First operand has 244 places, 439 transitions, 7567 flow. Second operand 9 states and 173 transitions. [2024-06-27 23:29:20,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 481 transitions, 8721 flow [2024-06-27 23:29:20,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 481 transitions, 8518 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:20,818 INFO L231 Difference]: Finished difference. Result has 248 places, 440 transitions, 7817 flow [2024-06-27 23:29:20,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7817, PETRI_PLACES=248, PETRI_TRANSITIONS=440} [2024-06-27 23:29:20,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 206 predicate places. [2024-06-27 23:29:20,822 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 440 transitions, 7817 flow [2024-06-27 23:29:20,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:20,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:20,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:20,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:29:20,828 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:20,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -334323641, now seen corresponding path program 1 times [2024-06-27 23:29:20,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:20,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819601417] [2024-06-27 23:29:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:20,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819601417] [2024-06-27 23:29:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819601417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:22,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:22,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:22,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791936697] [2024-06-27 23:29:22,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:22,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:22,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:22,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:22,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 440 transitions, 7817 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:22,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:22,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:22,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:24,376 INFO L124 PetriNetUnfolderBase]: 3834/5792 cut-off events. [2024-06-27 23:29:24,376 INFO L125 PetriNetUnfolderBase]: For 352700/352711 co-relation queries the response was YES. [2024-06-27 23:29:24,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48993 conditions, 5792 events. 3834/5792 cut-off events. For 352700/352711 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 31217 event pairs, 1059 based on Foata normal form. 10/5799 useless extension candidates. Maximal degree in co-relation 48878. Up to 5265 conditions per place. [2024-06-27 23:29:24,447 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 356 selfloop transitions, 135 changer transitions 0/494 dead transitions. [2024-06-27 23:29:24,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 494 transitions, 9214 flow [2024-06-27 23:29:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 23:29:24,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-27 23:29:24,449 INFO L175 Difference]: Start difference. First operand has 248 places, 440 transitions, 7817 flow. Second operand 9 states and 165 transitions. [2024-06-27 23:29:24,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 494 transitions, 9214 flow [2024-06-27 23:29:25,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 494 transitions, 8877 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:25,116 INFO L231 Difference]: Finished difference. Result has 252 places, 470 transitions, 8148 flow [2024-06-27 23:29:25,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7480, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8148, PETRI_PLACES=252, PETRI_TRANSITIONS=470} [2024-06-27 23:29:25,116 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-27 23:29:25,117 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 470 transitions, 8148 flow [2024-06-27 23:29:25,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:25,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:25,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:29:25,117 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:25,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash 303322673, now seen corresponding path program 3 times [2024-06-27 23:29:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:25,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031409723] [2024-06-27 23:29:25,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:26,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031409723] [2024-06-27 23:29:26,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031409723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:26,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:26,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:26,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104445826] [2024-06-27 23:29:26,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:27,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:27,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 470 transitions, 8148 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:27,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:27,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:27,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:28,430 INFO L124 PetriNetUnfolderBase]: 3768/5751 cut-off events. [2024-06-27 23:29:28,431 INFO L125 PetriNetUnfolderBase]: For 373555/373568 co-relation queries the response was YES. [2024-06-27 23:29:28,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49803 conditions, 5751 events. 3768/5751 cut-off events. For 373555/373568 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31369 event pairs, 763 based on Foata normal form. 20/5767 useless extension candidates. Maximal degree in co-relation 49686. Up to 4770 conditions per place. [2024-06-27 23:29:28,501 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 302 selfloop transitions, 180 changer transitions 0/507 dead transitions. [2024-06-27 23:29:28,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 507 transitions, 9312 flow [2024-06-27 23:29:28,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 23:29:28,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-27 23:29:28,503 INFO L175 Difference]: Start difference. First operand has 252 places, 470 transitions, 8148 flow. Second operand 9 states and 169 transitions. [2024-06-27 23:29:28,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 507 transitions, 9312 flow [2024-06-27 23:29:29,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 507 transitions, 9145 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:29,366 INFO L231 Difference]: Finished difference. Result has 258 places, 471 transitions, 8401 flow [2024-06-27 23:29:29,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7981, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8401, PETRI_PLACES=258, PETRI_TRANSITIONS=471} [2024-06-27 23:29:29,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-27 23:29:29,367 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 471 transitions, 8401 flow [2024-06-27 23:29:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:29,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:29,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:29,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:29:29,368 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:29,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 309809423, now seen corresponding path program 4 times [2024-06-27 23:29:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125472102] [2024-06-27 23:29:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125472102] [2024-06-27 23:29:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125472102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:31,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:31,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646982871] [2024-06-27 23:29:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:31,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:31,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:29:31,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 471 transitions, 8401 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:31,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:31,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:29:31,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:32,707 INFO L124 PetriNetUnfolderBase]: 3916/5929 cut-off events. [2024-06-27 23:29:32,707 INFO L125 PetriNetUnfolderBase]: For 389683/389696 co-relation queries the response was YES. [2024-06-27 23:29:32,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51269 conditions, 5929 events. 3916/5929 cut-off events. For 389683/389696 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 32075 event pairs, 785 based on Foata normal form. 20/5945 useless extension candidates. Maximal degree in co-relation 51150. Up to 4806 conditions per place. [2024-06-27 23:29:32,776 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 310 selfloop transitions, 194 changer transitions 0/507 dead transitions. [2024-06-27 23:29:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 507 transitions, 9594 flow [2024-06-27 23:29:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 23:29:32,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-27 23:29:32,778 INFO L175 Difference]: Start difference. First operand has 258 places, 471 transitions, 8401 flow. Second operand 8 states and 153 transitions. [2024-06-27 23:29:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 507 transitions, 9594 flow [2024-06-27 23:29:33,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 507 transitions, 9261 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:33,472 INFO L231 Difference]: Finished difference. Result has 260 places, 472 transitions, 8518 flow [2024-06-27 23:29:33,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8068, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8518, PETRI_PLACES=260, PETRI_TRANSITIONS=472} [2024-06-27 23:29:33,473 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-27 23:29:33,473 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 472 transitions, 8518 flow [2024-06-27 23:29:33,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:33,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:33,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:33,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:29:33,473 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:33,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash -278806633, now seen corresponding path program 3 times [2024-06-27 23:29:33,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:33,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528340120] [2024-06-27 23:29:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:33,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:35,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:35,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528340120] [2024-06-27 23:29:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528340120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:35,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:35,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:35,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343541418] [2024-06-27 23:29:35,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:35,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:35,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:35,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:35,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:35,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:35,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 472 transitions, 8518 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:35,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:35,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:35,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:36,675 INFO L124 PetriNetUnfolderBase]: 3926/5940 cut-off events. [2024-06-27 23:29:36,675 INFO L125 PetriNetUnfolderBase]: For 392505/392521 co-relation queries the response was YES. [2024-06-27 23:29:36,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51559 conditions, 5940 events. 3926/5940 cut-off events. For 392505/392521 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32116 event pairs, 879 based on Foata normal form. 14/5951 useless extension candidates. Maximal degree in co-relation 51440. Up to 5572 conditions per place. [2024-06-27 23:29:36,745 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 399 selfloop transitions, 92 changer transitions 0/494 dead transitions. [2024-06-27 23:29:36,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 494 transitions, 9620 flow [2024-06-27 23:29:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:36,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 23:29:36,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 23:29:36,746 INFO L175 Difference]: Start difference. First operand has 260 places, 472 transitions, 8518 flow. Second operand 7 states and 133 transitions. [2024-06-27 23:29:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 494 transitions, 9620 flow [2024-06-27 23:29:37,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 494 transitions, 9190 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:37,558 INFO L231 Difference]: Finished difference. Result has 263 places, 478 transitions, 8407 flow [2024-06-27 23:29:37,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8088, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8407, PETRI_PLACES=263, PETRI_TRANSITIONS=478} [2024-06-27 23:29:37,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-27 23:29:37,563 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 478 transitions, 8407 flow [2024-06-27 23:29:37,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 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) [2024-06-27 23:29:37,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:37,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:29:37,563 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:37,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -278794729, now seen corresponding path program 1 times [2024-06-27 23:29:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819332377] [2024-06-27 23:29:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:39,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:39,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819332377] [2024-06-27 23:29:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819332377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564191709] [2024-06-27 23:29:39,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:39,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:39,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:29:39,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 478 transitions, 8407 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:39,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:39,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:29:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:40,970 INFO L124 PetriNetUnfolderBase]: 3678/5661 cut-off events. [2024-06-27 23:29:40,970 INFO L125 PetriNetUnfolderBase]: For 417328/417614 co-relation queries the response was YES. [2024-06-27 23:29:41,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49262 conditions, 5661 events. 3678/5661 cut-off events. For 417328/417614 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 31567 event pairs, 815 based on Foata normal form. 101/5685 useless extension candidates. Maximal degree in co-relation 49140. Up to 4786 conditions per place. [2024-06-27 23:29:41,035 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 303 selfloop transitions, 137 changer transitions 0/517 dead transitions. [2024-06-27 23:29:41,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 517 transitions, 9647 flow [2024-06-27 23:29:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 23:29:41,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-27 23:29:41,036 INFO L175 Difference]: Start difference. First operand has 263 places, 478 transitions, 8407 flow. Second operand 9 states and 166 transitions. [2024-06-27 23:29:41,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 517 transitions, 9647 flow [2024-06-27 23:29:41,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 517 transitions, 9533 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:41,665 INFO L231 Difference]: Finished difference. Result has 271 places, 495 transitions, 8817 flow [2024-06-27 23:29:41,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8293, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8817, PETRI_PLACES=271, PETRI_TRANSITIONS=495} [2024-06-27 23:29:41,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-27 23:29:41,666 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 495 transitions, 8817 flow [2024-06-27 23:29:41,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:41,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:41,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:41,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:29:41,667 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash 82914937, now seen corresponding path program 5 times [2024-06-27 23:29:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752641476] [2024-06-27 23:29:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752641476] [2024-06-27 23:29:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752641476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761249352] [2024-06-27 23:29:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:43,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:43,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 495 transitions, 8817 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:43,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:43,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:43,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:45,428 INFO L124 PetriNetUnfolderBase]: 4093/6254 cut-off events. [2024-06-27 23:29:45,428 INFO L125 PetriNetUnfolderBase]: For 459190/459223 co-relation queries the response was YES. [2024-06-27 23:29:45,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54844 conditions, 6254 events. 4093/6254 cut-off events. For 459190/459223 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 35128 event pairs, 1450 based on Foata normal form. 12/6206 useless extension candidates. Maximal degree in co-relation 54719. Up to 5199 conditions per place. [2024-06-27 23:29:45,503 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 323 selfloop transitions, 179 changer transitions 0/528 dead transitions. [2024-06-27 23:29:45,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 528 transitions, 10020 flow [2024-06-27 23:29:45,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 23:29:45,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 23:29:45,505 INFO L175 Difference]: Start difference. First operand has 271 places, 495 transitions, 8817 flow. Second operand 9 states and 162 transitions. [2024-06-27 23:29:45,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 528 transitions, 10020 flow [2024-06-27 23:29:46,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 528 transitions, 9871 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:46,363 INFO L231 Difference]: Finished difference. Result has 275 places, 498 transitions, 9118 flow [2024-06-27 23:29:46,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8670, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9118, PETRI_PLACES=275, PETRI_TRANSITIONS=498} [2024-06-27 23:29:46,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-27 23:29:46,364 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 498 transitions, 9118 flow [2024-06-27 23:29:46,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:46,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:46,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:46,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:29:46,365 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:46,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1409482365, now seen corresponding path program 2 times [2024-06-27 23:29:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460268550] [2024-06-27 23:29:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:48,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:48,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460268550] [2024-06-27 23:29:48,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460268550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:48,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:48,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252815029] [2024-06-27 23:29:48,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:48,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:48,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:48,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:48,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:48,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:48,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 498 transitions, 9118 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:48,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:48,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:49,769 INFO L124 PetriNetUnfolderBase]: 4171/6330 cut-off events. [2024-06-27 23:29:49,769 INFO L125 PetriNetUnfolderBase]: For 441193/441204 co-relation queries the response was YES. [2024-06-27 23:29:49,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55458 conditions, 6330 events. 4171/6330 cut-off events. For 441193/441204 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35169 event pairs, 1143 based on Foata normal form. 10/6337 useless extension candidates. Maximal degree in co-relation 55330. Up to 5784 conditions per place. [2024-06-27 23:29:49,847 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 381 selfloop transitions, 142 changer transitions 0/526 dead transitions. [2024-06-27 23:29:49,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 526 transitions, 10318 flow [2024-06-27 23:29:49,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:49,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 23:29:49,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-27 23:29:49,862 INFO L175 Difference]: Start difference. First operand has 275 places, 498 transitions, 9118 flow. Second operand 9 states and 167 transitions. [2024-06-27 23:29:49,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 526 transitions, 10318 flow [2024-06-27 23:29:50,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 526 transitions, 9926 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:50,778 INFO L231 Difference]: Finished difference. Result has 277 places, 502 transitions, 9075 flow [2024-06-27 23:29:50,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8726, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9075, PETRI_PLACES=277, PETRI_TRANSITIONS=502} [2024-06-27 23:29:50,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-27 23:29:50,778 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 502 transitions, 9075 flow [2024-06-27 23:29:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:50,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:50,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:50,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:29:50,779 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:50,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash -287682429, now seen corresponding path program 6 times [2024-06-27 23:29:50,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:50,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085305752] [2024-06-27 23:29:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:50,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085305752] [2024-06-27 23:29:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085305752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:52,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:52,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014249965] [2024-06-27 23:29:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:53,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:29:53,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 502 transitions, 9075 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:53,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:53,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:29:53,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:54,624 INFO L124 PetriNetUnfolderBase]: 4183/6394 cut-off events. [2024-06-27 23:29:54,624 INFO L125 PetriNetUnfolderBase]: For 488651/488684 co-relation queries the response was YES. [2024-06-27 23:29:54,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57004 conditions, 6394 events. 4183/6394 cut-off events. For 488651/488684 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 36169 event pairs, 1429 based on Foata normal form. 12/6346 useless extension candidates. Maximal degree in co-relation 56875. Up to 5162 conditions per place. [2024-06-27 23:29:54,709 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 330 selfloop transitions, 180 changer transitions 0/536 dead transitions. [2024-06-27 23:29:54,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 536 transitions, 10278 flow [2024-06-27 23:29:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 23:29:54,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292682926829268 [2024-06-27 23:29:54,711 INFO L175 Difference]: Start difference. First operand has 277 places, 502 transitions, 9075 flow. Second operand 10 states and 176 transitions. [2024-06-27 23:29:54,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 536 transitions, 10278 flow [2024-06-27 23:29:55,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 536 transitions, 9957 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:55,695 INFO L231 Difference]: Finished difference. Result has 280 places, 504 transitions, 9192 flow [2024-06-27 23:29:55,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8754, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9192, PETRI_PLACES=280, PETRI_TRANSITIONS=504} [2024-06-27 23:29:55,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 23:29:55,695 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 504 transitions, 9192 flow [2024-06-27 23:29:55,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:55,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:55,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:55,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:29:55,696 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:55,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:55,696 INFO L85 PathProgramCache]: Analyzing trace with hash 417233215, now seen corresponding path program 3 times [2024-06-27 23:29:55,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:55,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855506771] [2024-06-27 23:29:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:55,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:57,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855506771] [2024-06-27 23:29:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855506771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747248402] [2024-06-27 23:29:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:57,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:57,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:57,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:29:57,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 504 transitions, 9192 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:29:57,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:57,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:29:57,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:59,718 INFO L124 PetriNetUnfolderBase]: 4279/6503 cut-off events. [2024-06-27 23:29:59,718 INFO L125 PetriNetUnfolderBase]: For 471013/471029 co-relation queries the response was YES. [2024-06-27 23:29:59,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57599 conditions, 6503 events. 4279/6503 cut-off events. For 471013/471029 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 36215 event pairs, 954 based on Foata normal form. 14/6514 useless extension candidates. Maximal degree in co-relation 57469. Up to 5960 conditions per place. [2024-06-27 23:29:59,803 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 400 selfloop transitions, 131 changer transitions 0/534 dead transitions. [2024-06-27 23:29:59,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 534 transitions, 10576 flow [2024-06-27 23:29:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 23:29:59,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-27 23:29:59,804 INFO L175 Difference]: Start difference. First operand has 280 places, 504 transitions, 9192 flow. Second operand 8 states and 145 transitions. [2024-06-27 23:29:59,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 534 transitions, 10576 flow [2024-06-27 23:30:00,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 534 transitions, 10188 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:00,764 INFO L231 Difference]: Finished difference. Result has 282 places, 514 transitions, 9286 flow [2024-06-27 23:30:00,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8804, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9286, PETRI_PLACES=282, PETRI_TRANSITIONS=514} [2024-06-27 23:30:00,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-27 23:30:00,764 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 514 transitions, 9286 flow [2024-06-27 23:30:00,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:30:00,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:00,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:30:00,765 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:00,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1767147893, now seen corresponding path program 7 times [2024-06-27 23:30:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113427318] [2024-06-27 23:30:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113427318] [2024-06-27 23:30:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113427318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548834936] [2024-06-27 23:30:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:02,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:02,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:30:02,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 514 transitions, 9286 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:02,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:02,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:30:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:04,193 INFO L124 PetriNetUnfolderBase]: 4189/6403 cut-off events. [2024-06-27 23:30:04,193 INFO L125 PetriNetUnfolderBase]: For 508893/508926 co-relation queries the response was YES. [2024-06-27 23:30:04,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57510 conditions, 6403 events. 4189/6403 cut-off events. For 508893/508926 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 36186 event pairs, 1523 based on Foata normal form. 12/6355 useless extension candidates. Maximal degree in co-relation 57379. Up to 6044 conditions per place. [2024-06-27 23:30:04,288 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 494 selfloop transitions, 22 changer transitions 0/542 dead transitions. [2024-06-27 23:30:04,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 542 transitions, 10418 flow [2024-06-27 23:30:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 23:30:04,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 23:30:04,290 INFO L175 Difference]: Start difference. First operand has 282 places, 514 transitions, 9286 flow. Second operand 9 states and 153 transitions. [2024-06-27 23:30:04,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 542 transitions, 10418 flow [2024-06-27 23:30:05,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 542 transitions, 10225 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 23:30:05,500 INFO L231 Difference]: Finished difference. Result has 288 places, 514 transitions, 9143 flow [2024-06-27 23:30:05,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9093, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9143, PETRI_PLACES=288, PETRI_TRANSITIONS=514} [2024-06-27 23:30:05,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-27 23:30:05,501 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 514 transitions, 9143 flow [2024-06-27 23:30:05,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:05,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:05,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:30:05,501 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:05,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1953092601, now seen corresponding path program 8 times [2024-06-27 23:30:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:05,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776108758] [2024-06-27 23:30:05,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:05,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:07,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:07,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776108758] [2024-06-27 23:30:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776108758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:07,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46451055] [2024-06-27 23:30:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:07,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:30:07,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 514 transitions, 9143 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:07,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:07,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:30:07,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:09,106 INFO L124 PetriNetUnfolderBase]: 4213/6454 cut-off events. [2024-06-27 23:30:09,107 INFO L125 PetriNetUnfolderBase]: For 508222/508255 co-relation queries the response was YES. [2024-06-27 23:30:09,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57011 conditions, 6454 events. 4213/6454 cut-off events. For 508222/508255 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36736 event pairs, 1499 based on Foata normal form. 16/6410 useless extension candidates. Maximal degree in co-relation 56878. Up to 5689 conditions per place. [2024-06-27 23:30:09,190 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 410 selfloop transitions, 115 changer transitions 0/551 dead transitions. [2024-06-27 23:30:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 551 transitions, 10338 flow [2024-06-27 23:30:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 23:30:09,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49085365853658536 [2024-06-27 23:30:09,192 INFO L175 Difference]: Start difference. First operand has 288 places, 514 transitions, 9143 flow. Second operand 8 states and 161 transitions. [2024-06-27 23:30:09,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 551 transitions, 10338 flow [2024-06-27 23:30:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 551 transitions, 10134 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:10,288 INFO L231 Difference]: Finished difference. Result has 287 places, 516 transitions, 9138 flow [2024-06-27 23:30:10,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8864, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9138, PETRI_PLACES=287, PETRI_TRANSITIONS=516} [2024-06-27 23:30:10,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-27 23:30:10,289 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 516 transitions, 9138 flow [2024-06-27 23:30:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:10,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:10,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:30:10,290 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1239257093, now seen corresponding path program 2 times [2024-06-27 23:30:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829803498] [2024-06-27 23:30:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:11,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:11,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829803498] [2024-06-27 23:30:11,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829803498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:11,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:11,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:11,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088430826] [2024-06-27 23:30:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:11,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:11,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:11,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:11,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:30:11,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 516 transitions, 9138 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:11,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:11,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:30:11,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:13,212 INFO L124 PetriNetUnfolderBase]: 3900/6055 cut-off events. [2024-06-27 23:30:13,212 INFO L125 PetriNetUnfolderBase]: For 476744/477071 co-relation queries the response was YES. [2024-06-27 23:30:13,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52697 conditions, 6055 events. 3900/6055 cut-off events. For 476744/477071 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 35175 event pairs, 1495 based on Foata normal form. 116/6081 useless extension candidates. Maximal degree in co-relation 52564. Up to 5553 conditions per place. [2024-06-27 23:30:13,300 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 402 selfloop transitions, 42 changer transitions 0/527 dead transitions. [2024-06-27 23:30:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 527 transitions, 10058 flow [2024-06-27 23:30:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 23:30:13,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-27 23:30:13,301 INFO L175 Difference]: Start difference. First operand has 287 places, 516 transitions, 9138 flow. Second operand 8 states and 134 transitions. [2024-06-27 23:30:13,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 527 transitions, 10058 flow [2024-06-27 23:30:14,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 527 transitions, 9866 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:14,339 INFO L231 Difference]: Finished difference. Result has 289 places, 516 transitions, 9039 flow [2024-06-27 23:30:14,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8946, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9039, PETRI_PLACES=289, PETRI_TRANSITIONS=516} [2024-06-27 23:30:14,340 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-27 23:30:14,340 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 516 transitions, 9039 flow [2024-06-27 23:30:14,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:14,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:14,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:30:14,341 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:14,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash 590754565, now seen corresponding path program 3 times [2024-06-27 23:30:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990304744] [2024-06-27 23:30:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990304744] [2024-06-27 23:30:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990304744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:15,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882671744] [2024-06-27 23:30:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:16,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:30:16,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 516 transitions, 9039 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:16,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:16,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:30:16,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:17,663 INFO L124 PetriNetUnfolderBase]: 3876/6023 cut-off events. [2024-06-27 23:30:17,663 INFO L125 PetriNetUnfolderBase]: For 473453/473756 co-relation queries the response was YES. [2024-06-27 23:30:17,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51742 conditions, 6023 events. 3876/6023 cut-off events. For 473453/473756 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 35000 event pairs, 1491 based on Foata normal form. 110/6043 useless extension candidates. Maximal degree in co-relation 51608. Up to 5444 conditions per place. [2024-06-27 23:30:17,739 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 386 selfloop transitions, 59 changer transitions 0/528 dead transitions. [2024-06-27 23:30:17,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 528 transitions, 9965 flow [2024-06-27 23:30:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:17,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 23:30:17,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-27 23:30:17,741 INFO L175 Difference]: Start difference. First operand has 289 places, 516 transitions, 9039 flow. Second operand 9 states and 149 transitions. [2024-06-27 23:30:17,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 528 transitions, 9965 flow [2024-06-27 23:30:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 528 transitions, 9837 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:18,606 INFO L231 Difference]: Finished difference. Result has 292 places, 516 transitions, 9036 flow [2024-06-27 23:30:18,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9036, PETRI_PLACES=292, PETRI_TRANSITIONS=516} [2024-06-27 23:30:18,607 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-27 23:30:18,607 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 516 transitions, 9036 flow [2024-06-27 23:30:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:18,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:18,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:18,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:30:18,607 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:18,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash 403142203, now seen corresponding path program 4 times [2024-06-27 23:30:18,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:18,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453315840] [2024-06-27 23:30:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:18,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:20,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:20,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453315840] [2024-06-27 23:30:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453315840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:20,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092754084] [2024-06-27 23:30:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:20,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:20,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:20,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 516 transitions, 9036 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:20,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:20,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:20,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:21,741 INFO L124 PetriNetUnfolderBase]: 4229/6447 cut-off events. [2024-06-27 23:30:21,741 INFO L125 PetriNetUnfolderBase]: For 460950/460956 co-relation queries the response was YES. [2024-06-27 23:30:21,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55123 conditions, 6447 events. 4229/6447 cut-off events. For 460950/460956 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 36052 event pairs, 1608 based on Foata normal form. 6/6450 useless extension candidates. Maximal degree in co-relation 54989. Up to 6347 conditions per place. [2024-06-27 23:30:21,829 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 490 selfloop transitions, 35 changer transitions 0/528 dead transitions. [2024-06-27 23:30:21,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 528 transitions, 10131 flow [2024-06-27 23:30:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-27 23:30:21,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2024-06-27 23:30:21,833 INFO L175 Difference]: Start difference. First operand has 292 places, 516 transitions, 9036 flow. Second operand 8 states and 125 transitions. [2024-06-27 23:30:21,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 528 transitions, 10131 flow [2024-06-27 23:30:22,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 528 transitions, 9928 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:22,928 INFO L231 Difference]: Finished difference. Result has 292 places, 517 transitions, 8923 flow [2024-06-27 23:30:22,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8835, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8923, PETRI_PLACES=292, PETRI_TRANSITIONS=517} [2024-06-27 23:30:22,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-27 23:30:22,929 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 517 transitions, 8923 flow [2024-06-27 23:30:22,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:22,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:22,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:22,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:30:22,929 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:22,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2049806552, now seen corresponding path program 1 times [2024-06-27 23:30:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100389943] [2024-06-27 23:30:22,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:24,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100389943] [2024-06-27 23:30:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100389943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907417656] [2024-06-27 23:30:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:25,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:25,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 517 transitions, 8923 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:25,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:25,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:25,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:26,925 INFO L124 PetriNetUnfolderBase]: 4274/6510 cut-off events. [2024-06-27 23:30:26,925 INFO L125 PetriNetUnfolderBase]: For 479337/479337 co-relation queries the response was YES. [2024-06-27 23:30:26,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55530 conditions, 6510 events. 4274/6510 cut-off events. For 479337/479337 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 36420 event pairs, 1612 based on Foata normal form. 6/6515 useless extension candidates. Maximal degree in co-relation 55396. Up to 6384 conditions per place. [2024-06-27 23:30:27,003 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 511 selfloop transitions, 34 changer transitions 0/548 dead transitions. [2024-06-27 23:30:27,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 548 transitions, 10233 flow [2024-06-27 23:30:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 23:30:27,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-27 23:30:27,006 INFO L175 Difference]: Start difference. First operand has 292 places, 517 transitions, 8923 flow. Second operand 9 states and 141 transitions. [2024-06-27 23:30:27,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 548 transitions, 10233 flow [2024-06-27 23:30:27,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 548 transitions, 10094 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:27,978 INFO L231 Difference]: Finished difference. Result has 294 places, 527 transitions, 9009 flow [2024-06-27 23:30:27,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8784, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9009, PETRI_PLACES=294, PETRI_TRANSITIONS=527} [2024-06-27 23:30:27,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 23:30:27,978 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 527 transitions, 9009 flow [2024-06-27 23:30:27,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:27,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:27,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:27,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:30:27,979 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:27,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1852414424, now seen corresponding path program 2 times [2024-06-27 23:30:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368947574] [2024-06-27 23:30:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368947574] [2024-06-27 23:30:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368947574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:30,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:30,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045177695] [2024-06-27 23:30:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:30,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:30,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:30,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 527 transitions, 9009 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:30,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:30,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:30,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:31,751 INFO L124 PetriNetUnfolderBase]: 4352/6618 cut-off events. [2024-06-27 23:30:31,751 INFO L125 PetriNetUnfolderBase]: For 504496/504496 co-relation queries the response was YES. [2024-06-27 23:30:31,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57118 conditions, 6618 events. 4352/6618 cut-off events. For 504496/504496 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 37002 event pairs, 1621 based on Foata normal form. 6/6623 useless extension candidates. Maximal degree in co-relation 56985. Up to 6311 conditions per place. [2024-06-27 23:30:31,840 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 496 selfloop transitions, 68 changer transitions 0/567 dead transitions. [2024-06-27 23:30:31,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 567 transitions, 10719 flow [2024-06-27 23:30:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 23:30:31,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 23:30:31,842 INFO L175 Difference]: Start difference. First operand has 294 places, 527 transitions, 9009 flow. Second operand 9 states and 154 transitions. [2024-06-27 23:30:31,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 567 transitions, 10719 flow [2024-06-27 23:30:32,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 567 transitions, 10637 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:32,920 INFO L231 Difference]: Finished difference. Result has 296 places, 536 transitions, 9219 flow [2024-06-27 23:30:32,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8927, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9219, PETRI_PLACES=296, PETRI_TRANSITIONS=536} [2024-06-27 23:30:32,921 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 23:30:32,921 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 536 transitions, 9219 flow [2024-06-27 23:30:32,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:32,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:32,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:30:32,922 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:32,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:32,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1445739258, now seen corresponding path program 3 times [2024-06-27 23:30:32,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020004295] [2024-06-27 23:30:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:34,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:34,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020004295] [2024-06-27 23:30:34,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020004295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:34,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454521168] [2024-06-27 23:30:34,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:34,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:34,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:34,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:35,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:35,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 536 transitions, 9219 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:35,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:35,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:35,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:36,771 INFO L124 PetriNetUnfolderBase]: 4334/6594 cut-off events. [2024-06-27 23:30:36,772 INFO L125 PetriNetUnfolderBase]: For 506924/506924 co-relation queries the response was YES. [2024-06-27 23:30:36,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57118 conditions, 6594 events. 4334/6594 cut-off events. For 506924/506924 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 36902 event pairs, 1614 based on Foata normal form. 6/6599 useless extension candidates. Maximal degree in co-relation 56984. Up to 6300 conditions per place. [2024-06-27 23:30:36,850 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 492 selfloop transitions, 69 changer transitions 0/564 dead transitions. [2024-06-27 23:30:36,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 564 transitions, 10633 flow [2024-06-27 23:30:36,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 23:30:36,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-27 23:30:36,852 INFO L175 Difference]: Start difference. First operand has 296 places, 536 transitions, 9219 flow. Second operand 9 states and 150 transitions. [2024-06-27 23:30:36,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 564 transitions, 10633 flow [2024-06-27 23:30:37,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 564 transitions, 10515 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 23:30:37,824 INFO L231 Difference]: Finished difference. Result has 301 places, 536 transitions, 9250 flow [2024-06-27 23:30:37,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9250, PETRI_PLACES=301, PETRI_TRANSITIONS=536} [2024-06-27 23:30:37,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-27 23:30:37,825 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 536 transitions, 9250 flow [2024-06-27 23:30:37,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:37,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:37,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:30:37,826 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:37,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1303902232, now seen corresponding path program 4 times [2024-06-27 23:30:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819400911] [2024-06-27 23:30:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:39,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:39,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819400911] [2024-06-27 23:30:39,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819400911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:39,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:39,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:39,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977844943] [2024-06-27 23:30:39,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:39,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:39,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:39,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:39,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:40,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:40,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 536 transitions, 9250 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:40,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:40,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:40,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:41,715 INFO L124 PetriNetUnfolderBase]: 4364/6636 cut-off events. [2024-06-27 23:30:41,716 INFO L125 PetriNetUnfolderBase]: For 520499/520499 co-relation queries the response was YES. [2024-06-27 23:30:41,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57618 conditions, 6636 events. 4364/6636 cut-off events. For 520499/520499 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 37116 event pairs, 1611 based on Foata normal form. 6/6641 useless extension candidates. Maximal degree in co-relation 57482. Up to 6322 conditions per place. [2024-06-27 23:30:41,805 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 491 selfloop transitions, 73 changer transitions 0/567 dead transitions. [2024-06-27 23:30:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 567 transitions, 10712 flow [2024-06-27 23:30:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:30:41,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:30:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 23:30:41,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2024-06-27 23:30:41,807 INFO L175 Difference]: Start difference. First operand has 301 places, 536 transitions, 9250 flow. Second operand 12 states and 182 transitions. [2024-06-27 23:30:41,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 567 transitions, 10712 flow [2024-06-27 23:30:42,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 567 transitions, 10559 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:42,843 INFO L231 Difference]: Finished difference. Result has 305 places, 539 transitions, 9311 flow [2024-06-27 23:30:42,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9103, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9311, PETRI_PLACES=305, PETRI_TRANSITIONS=539} [2024-06-27 23:30:42,844 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-27 23:30:42,844 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 539 transitions, 9311 flow [2024-06-27 23:30:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:42,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:42,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:42,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:30:42,844 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1246443048, now seen corresponding path program 5 times [2024-06-27 23:30:42,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726996039] [2024-06-27 23:30:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:42,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:44,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726996039] [2024-06-27 23:30:44,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726996039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:44,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207817648] [2024-06-27 23:30:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:44,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:44,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:44,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:44,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 539 transitions, 9311 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:44,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:44,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:44,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:46,799 INFO L124 PetriNetUnfolderBase]: 4394/6678 cut-off events. [2024-06-27 23:30:46,799 INFO L125 PetriNetUnfolderBase]: For 535178/535178 co-relation queries the response was YES. [2024-06-27 23:30:46,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58164 conditions, 6678 events. 4394/6678 cut-off events. For 535178/535178 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 37384 event pairs, 1620 based on Foata normal form. 6/6683 useless extension candidates. Maximal degree in co-relation 58027. Up to 6344 conditions per place. [2024-06-27 23:30:46,878 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 494 selfloop transitions, 74 changer transitions 0/571 dead transitions. [2024-06-27 23:30:46,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 571 transitions, 10797 flow [2024-06-27 23:30:46,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:30:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:30:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 23:30:46,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38802660753880264 [2024-06-27 23:30:46,879 INFO L175 Difference]: Start difference. First operand has 305 places, 539 transitions, 9311 flow. Second operand 11 states and 175 transitions. [2024-06-27 23:30:46,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 571 transitions, 10797 flow [2024-06-27 23:30:47,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 571 transitions, 10632 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 23:30:47,971 INFO L231 Difference]: Finished difference. Result has 307 places, 542 transitions, 9360 flow [2024-06-27 23:30:47,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9155, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9360, PETRI_PLACES=307, PETRI_TRANSITIONS=542} [2024-06-27 23:30:47,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-27 23:30:47,972 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 542 transitions, 9360 flow [2024-06-27 23:30:47,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:47,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:47,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:47,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:30:47,973 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:47,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1246437468, now seen corresponding path program 6 times [2024-06-27 23:30:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:47,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548236131] [2024-06-27 23:30:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548236131] [2024-06-27 23:30:50,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548236131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:50,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:50,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:50,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608594701] [2024-06-27 23:30:50,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:50,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:50,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:50,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:50,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:30:50,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 542 transitions, 9360 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:50,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:50,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:30:50,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:51,951 INFO L124 PetriNetUnfolderBase]: 4376/6654 cut-off events. [2024-06-27 23:30:51,952 INFO L125 PetriNetUnfolderBase]: For 533821/533821 co-relation queries the response was YES. [2024-06-27 23:30:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57599 conditions, 6654 events. 4376/6654 cut-off events. For 533821/533821 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 37237 event pairs, 1617 based on Foata normal form. 6/6659 useless extension candidates. Maximal degree in co-relation 57461. Up to 6333 conditions per place. [2024-06-27 23:30:52,074 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 501 selfloop transitions, 71 changer transitions 0/575 dead transitions. [2024-06-27 23:30:52,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 575 transitions, 10697 flow [2024-06-27 23:30:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:30:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:30:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 23:30:52,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-27 23:30:52,076 INFO L175 Difference]: Start difference. First operand has 307 places, 542 transitions, 9360 flow. Second operand 11 states and 176 transitions. [2024-06-27 23:30:52,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 575 transitions, 10697 flow [2024-06-27 23:30:53,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 575 transitions, 10469 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 23:30:53,632 INFO L231 Difference]: Finished difference. Result has 309 places, 542 transitions, 9282 flow [2024-06-27 23:30:53,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9132, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9282, PETRI_PLACES=309, PETRI_TRANSITIONS=542} [2024-06-27 23:30:53,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-27 23:30:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 542 transitions, 9282 flow [2024-06-27 23:30:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:53,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:53,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:30:53,633 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:53,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:53,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1238808771, now seen corresponding path program 1 times [2024-06-27 23:30:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:53,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190469825] [2024-06-27 23:30:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190469825] [2024-06-27 23:30:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190469825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086699044] [2024-06-27 23:30:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:56,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:56,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:30:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 542 transitions, 9282 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:56,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:56,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:30:56,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:58,149 INFO L124 PetriNetUnfolderBase]: 4010/6211 cut-off events. [2024-06-27 23:30:58,150 INFO L125 PetriNetUnfolderBase]: For 537983/538274 co-relation queries the response was YES. [2024-06-27 23:30:58,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53798 conditions, 6211 events. 4010/6211 cut-off events. For 537983/538274 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35977 event pairs, 1497 based on Foata normal form. 114/6231 useless extension candidates. Maximal degree in co-relation 53659. Up to 5703 conditions per place. [2024-06-27 23:30:58,224 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 414 selfloop transitions, 58 changer transitions 0/555 dead transitions. [2024-06-27 23:30:58,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 555 transitions, 10298 flow [2024-06-27 23:30:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 23:30:58,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-27 23:30:58,225 INFO L175 Difference]: Start difference. First operand has 309 places, 542 transitions, 9282 flow. Second operand 9 states and 144 transitions. [2024-06-27 23:30:58,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 555 transitions, 10298 flow [2024-06-27 23:30:59,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 555 transitions, 10117 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:30:59,146 INFO L231 Difference]: Finished difference. Result has 308 places, 544 transitions, 9272 flow [2024-06-27 23:30:59,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9272, PETRI_PLACES=308, PETRI_TRANSITIONS=544} [2024-06-27 23:30:59,147 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-06-27 23:30:59,147 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 544 transitions, 9272 flow [2024-06-27 23:30:59,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:59,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:30:59,148 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:30:59,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:59,148 INFO L85 PathProgramCache]: Analyzing trace with hash 484121799, now seen corresponding path program 1 times [2024-06-27 23:30:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888450987] [2024-06-27 23:30:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888450987] [2024-06-27 23:31:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888450987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:00,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:00,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001324502] [2024-06-27 23:31:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:00,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:31:00,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 544 transitions, 9272 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:00,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:00,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:31:00,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:02,662 INFO L124 PetriNetUnfolderBase]: 4065/6446 cut-off events. [2024-06-27 23:31:02,662 INFO L125 PetriNetUnfolderBase]: For 564117/564200 co-relation queries the response was YES. [2024-06-27 23:31:02,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56949 conditions, 6446 events. 4065/6446 cut-off events. For 564117/564200 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38866 event pairs, 586 based on Foata normal form. 70/6496 useless extension candidates. Maximal degree in co-relation 56809. Up to 4784 conditions per place. [2024-06-27 23:31:02,746 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 416 selfloop transitions, 144 changer transitions 0/638 dead transitions. [2024-06-27 23:31:02,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 638 transitions, 11713 flow [2024-06-27 23:31:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-27 23:31:02,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-27 23:31:02,747 INFO L175 Difference]: Start difference. First operand has 308 places, 544 transitions, 9272 flow. Second operand 9 states and 189 transitions. [2024-06-27 23:31:02,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 638 transitions, 11713 flow [2024-06-27 23:31:04,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 638 transitions, 11556 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:04,048 INFO L231 Difference]: Finished difference. Result has 314 places, 594 transitions, 10244 flow [2024-06-27 23:31:04,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9115, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10244, PETRI_PLACES=314, PETRI_TRANSITIONS=594} [2024-06-27 23:31:04,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-27 23:31:04,049 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 594 transitions, 10244 flow [2024-06-27 23:31:04,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:04,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:04,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:31:04,050 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:04,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1235123911, now seen corresponding path program 4 times [2024-06-27 23:31:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256811329] [2024-06-27 23:31:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256811329] [2024-06-27 23:31:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256811329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099299213] [2024-06-27 23:31:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:05,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:31:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 594 transitions, 10244 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:31:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:07,756 INFO L124 PetriNetUnfolderBase]: 4691/7131 cut-off events. [2024-06-27 23:31:07,756 INFO L125 PetriNetUnfolderBase]: For 580084/580100 co-relation queries the response was YES. [2024-06-27 23:31:07,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62855 conditions, 7131 events. 4691/7131 cut-off events. For 580084/580100 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 40587 event pairs, 1002 based on Foata normal form. 14/7142 useless extension candidates. Maximal degree in co-relation 62711. Up to 6214 conditions per place. [2024-06-27 23:31:07,857 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 462 selfloop transitions, 185 changer transitions 0/650 dead transitions. [2024-06-27 23:31:07,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 650 transitions, 12314 flow [2024-06-27 23:31:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 23:31:07,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2024-06-27 23:31:07,859 INFO L175 Difference]: Start difference. First operand has 314 places, 594 transitions, 10244 flow. Second operand 8 states and 158 transitions. [2024-06-27 23:31:07,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 650 transitions, 12314 flow [2024-06-27 23:31:09,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 650 transitions, 12171 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-27 23:31:09,242 INFO L231 Difference]: Finished difference. Result has 321 places, 620 transitions, 11068 flow [2024-06-27 23:31:09,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10121, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11068, PETRI_PLACES=321, PETRI_TRANSITIONS=620} [2024-06-27 23:31:09,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 23:31:09,243 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 620 transitions, 11068 flow [2024-06-27 23:31:09,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:09,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:09,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:09,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:31:09,244 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:09,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:09,244 INFO L85 PathProgramCache]: Analyzing trace with hash 913828325, now seen corresponding path program 2 times [2024-06-27 23:31:09,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:09,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938996786] [2024-06-27 23:31:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:09,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:11,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:11,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938996786] [2024-06-27 23:31:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938996786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:11,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:11,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102784030] [2024-06-27 23:31:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:11,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:11,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:11,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:31:11,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 620 transitions, 11068 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:11,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:11,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:31:11,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:13,068 INFO L124 PetriNetUnfolderBase]: 4739/7203 cut-off events. [2024-06-27 23:31:13,069 INFO L125 PetriNetUnfolderBase]: For 614576/614592 co-relation queries the response was YES. [2024-06-27 23:31:13,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64670 conditions, 7203 events. 4739/7203 cut-off events. For 614576/614592 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 40881 event pairs, 914 based on Foata normal form. 20/7220 useless extension candidates. Maximal degree in co-relation 64524. Up to 6319 conditions per place. [2024-06-27 23:31:13,169 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 491 selfloop transitions, 170 changer transitions 0/664 dead transitions. [2024-06-27 23:31:13,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 664 transitions, 12830 flow [2024-06-27 23:31:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:13,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 23:31:13,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:31:13,170 INFO L175 Difference]: Start difference. First operand has 321 places, 620 transitions, 11068 flow. Second operand 8 states and 164 transitions. [2024-06-27 23:31:13,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 664 transitions, 12830 flow [2024-06-27 23:31:14,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 664 transitions, 12752 flow, removed 27 selfloop flow, removed 1 redundant places. [2024-06-27 23:31:14,778 INFO L231 Difference]: Finished difference. Result has 329 places, 631 transitions, 11539 flow [2024-06-27 23:31:14,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10990, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11539, PETRI_PLACES=329, PETRI_TRANSITIONS=631} [2024-06-27 23:31:14,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-27 23:31:14,779 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 631 transitions, 11539 flow [2024-06-27 23:31:14,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:14,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:14,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:14,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:31:14,780 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:14,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:14,781 INFO L85 PathProgramCache]: Analyzing trace with hash 914067335, now seen corresponding path program 3 times [2024-06-27 23:31:14,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:14,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034089991] [2024-06-27 23:31:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:14,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:16,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:16,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034089991] [2024-06-27 23:31:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034089991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:16,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529850287] [2024-06-27 23:31:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:16,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:16,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:31:16,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 631 transitions, 11539 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:16,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:16,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:31:16,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:18,652 INFO L124 PetriNetUnfolderBase]: 4771/7251 cut-off events. [2024-06-27 23:31:18,652 INFO L125 PetriNetUnfolderBase]: For 636076/636092 co-relation queries the response was YES. [2024-06-27 23:31:18,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66314 conditions, 7251 events. 4771/7251 cut-off events. For 636076/636092 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 41420 event pairs, 1093 based on Foata normal form. 20/7268 useless extension candidates. Maximal degree in co-relation 66165. Up to 6659 conditions per place. [2024-06-27 23:31:18,752 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 508 selfloop transitions, 154 changer transitions 0/665 dead transitions. [2024-06-27 23:31:18,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 665 transitions, 13094 flow [2024-06-27 23:31:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 23:31:18,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-27 23:31:18,754 INFO L175 Difference]: Start difference. First operand has 329 places, 631 transitions, 11539 flow. Second operand 8 states and 159 transitions. [2024-06-27 23:31:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 665 transitions, 13094 flow [2024-06-27 23:31:20,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 665 transitions, 12624 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-06-27 23:31:20,496 INFO L231 Difference]: Finished difference. Result has 332 places, 637 transitions, 11520 flow [2024-06-27 23:31:20,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11101, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11520, PETRI_PLACES=332, PETRI_TRANSITIONS=637} [2024-06-27 23:31:20,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 290 predicate places. [2024-06-27 23:31:20,497 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 637 transitions, 11520 flow [2024-06-27 23:31:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:20,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:20,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:20,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:31:20,497 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:20,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:20,497 INFO L85 PathProgramCache]: Analyzing trace with hash 914067645, now seen corresponding path program 5 times [2024-06-27 23:31:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125480043] [2024-06-27 23:31:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125480043] [2024-06-27 23:31:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125480043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729550651] [2024-06-27 23:31:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:22,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:22,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:31:22,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 637 transitions, 11520 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:31:22,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:22,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:31:22,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:24,942 INFO L124 PetriNetUnfolderBase]: 4895/7425 cut-off events. [2024-06-27 23:31:24,942 INFO L125 PetriNetUnfolderBase]: For 644551/644567 co-relation queries the response was YES. [2024-06-27 23:31:25,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67476 conditions, 7425 events. 4895/7425 cut-off events. For 644551/644567 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 42471 event pairs, 1119 based on Foata normal form. 14/7436 useless extension candidates. Maximal degree in co-relation 67326. Up to 6689 conditions per place. [2024-06-27 23:31:25,033 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 506 selfloop transitions, 209 changer transitions 0/718 dead transitions. [2024-06-27 23:31:25,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 718 transitions, 13858 flow [2024-06-27 23:31:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 23:31:25,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434589800443459 [2024-06-27 23:31:25,035 INFO L175 Difference]: Start difference. First operand has 332 places, 637 transitions, 11520 flow. Second operand 11 states and 200 transitions. [2024-06-27 23:31:25,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 718 transitions, 13858 flow [2024-06-27 23:31:26,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 718 transitions, 13485 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:26,935 INFO L231 Difference]: Finished difference. Result has 342 places, 685 transitions, 12515 flow [2024-06-27 23:31:26,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11177, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12515, PETRI_PLACES=342, PETRI_TRANSITIONS=685} [2024-06-27 23:31:26,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-27 23:31:26,936 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 685 transitions, 12515 flow [2024-06-27 23:31:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:31:26,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:31:26,937 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1409482055, now seen corresponding path program 4 times [2024-06-27 23:31:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621970582] [2024-06-27 23:31:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:29,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621970582] [2024-06-27 23:31:29,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621970582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:29,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:29,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:29,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078325936] [2024-06-27 23:31:29,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:29,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:29,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:31:29,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 685 transitions, 12515 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:29,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:29,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:31:29,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:31,215 INFO L124 PetriNetUnfolderBase]: 4901/7435 cut-off events. [2024-06-27 23:31:31,215 INFO L125 PetriNetUnfolderBase]: For 671370/671390 co-relation queries the response was YES. [2024-06-27 23:31:31,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69146 conditions, 7435 events. 4901/7435 cut-off events. For 671370/671390 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 42500 event pairs, 1103 based on Foata normal form. 24/7456 useless extension candidates. Maximal degree in co-relation 68989. Up to 6994 conditions per place. [2024-06-27 23:31:31,323 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 586 selfloop transitions, 122 changer transitions 0/711 dead transitions. [2024-06-27 23:31:31,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 711 transitions, 14077 flow [2024-06-27 23:31:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 23:31:31,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 23:31:31,325 INFO L175 Difference]: Start difference. First operand has 342 places, 685 transitions, 12515 flow. Second operand 8 states and 152 transitions. [2024-06-27 23:31:31,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 711 transitions, 14077 flow [2024-06-27 23:31:33,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 711 transitions, 13836 flow, removed 103 selfloop flow, removed 2 redundant places. [2024-06-27 23:31:33,225 INFO L231 Difference]: Finished difference. Result has 348 places, 689 transitions, 12602 flow [2024-06-27 23:31:33,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12282, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12602, PETRI_PLACES=348, PETRI_TRANSITIONS=689} [2024-06-27 23:31:33,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-06-27 23:31:33,226 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 689 transitions, 12602 flow [2024-06-27 23:31:33,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:33,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:33,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:31:33,227 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:33,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1807461995, now seen corresponding path program 1 times [2024-06-27 23:31:33,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945267908] [2024-06-27 23:31:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:35,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:35,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945267908] [2024-06-27 23:31:35,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945267908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:35,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:35,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:35,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591422706] [2024-06-27 23:31:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:35,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:35,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:31:35,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 689 transitions, 12602 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:35,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:35,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:31:35,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:38,231 INFO L124 PetriNetUnfolderBase]: 4911/7450 cut-off events. [2024-06-27 23:31:38,231 INFO L125 PetriNetUnfolderBase]: For 669597/669625 co-relation queries the response was YES. [2024-06-27 23:31:38,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69438 conditions, 7450 events. 4911/7450 cut-off events. For 669597/669625 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 42502 event pairs, 1042 based on Foata normal form. 22/7468 useless extension candidates. Maximal degree in co-relation 69280. Up to 6988 conditions per place. [2024-06-27 23:31:38,327 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 613 selfloop transitions, 119 changer transitions 0/735 dead transitions. [2024-06-27 23:31:38,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 735 transitions, 14492 flow [2024-06-27 23:31:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 23:31:38,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-27 23:31:38,329 INFO L175 Difference]: Start difference. First operand has 348 places, 689 transitions, 12602 flow. Second operand 9 states and 157 transitions. [2024-06-27 23:31:38,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 735 transitions, 14492 flow [2024-06-27 23:31:40,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 735 transitions, 14292 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 23:31:40,317 INFO L231 Difference]: Finished difference. Result has 356 places, 710 transitions, 13111 flow [2024-06-27 23:31:40,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12402, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13111, PETRI_PLACES=356, PETRI_TRANSITIONS=710} [2024-06-27 23:31:40,317 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-27 23:31:40,318 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 710 transitions, 13111 flow [2024-06-27 23:31:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:40,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:40,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:40,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:31:40,318 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:40,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 275012251, now seen corresponding path program 2 times [2024-06-27 23:31:40,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:40,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463360739] [2024-06-27 23:31:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463360739] [2024-06-27 23:31:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463360739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:42,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766201839] [2024-06-27 23:31:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:42,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:31:42,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 710 transitions, 13111 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:42,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:42,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:31:42,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:44,674 INFO L124 PetriNetUnfolderBase]: 4983/7549 cut-off events. [2024-06-27 23:31:44,675 INFO L125 PetriNetUnfolderBase]: For 701958/701986 co-relation queries the response was YES. [2024-06-27 23:31:44,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71916 conditions, 7549 events. 4983/7549 cut-off events. For 701958/701986 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 43129 event pairs, 1063 based on Foata normal form. 22/7567 useless extension candidates. Maximal degree in co-relation 71753. Up to 6794 conditions per place. [2024-06-27 23:31:44,791 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 624 selfloop transitions, 147 changer transitions 0/774 dead transitions. [2024-06-27 23:31:44,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 774 transitions, 15960 flow [2024-06-27 23:31:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 23:31:44,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-27 23:31:44,793 INFO L175 Difference]: Start difference. First operand has 356 places, 710 transitions, 13111 flow. Second operand 9 states and 163 transitions. [2024-06-27 23:31:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 774 transitions, 15960 flow [2024-06-27 23:31:47,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 774 transitions, 15852 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 23:31:47,131 INFO L231 Difference]: Finished difference. Result has 366 places, 745 transitions, 14132 flow [2024-06-27 23:31:47,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13003, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14132, PETRI_PLACES=366, PETRI_TRANSITIONS=745} [2024-06-27 23:31:47,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 23:31:47,132 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 745 transitions, 14132 flow [2024-06-27 23:31:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:47,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:47,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:47,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:31:47,132 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:47,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2133247253, now seen corresponding path program 3 times [2024-06-27 23:31:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564596778] [2024-06-27 23:31:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:47,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564596778] [2024-06-27 23:31:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564596778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:49,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:49,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:31:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117855819] [2024-06-27 23:31:49,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:49,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:31:49,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:31:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:31:49,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:31:49,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 745 transitions, 14132 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:49,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:49,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:31:49,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:51,389 INFO L124 PetriNetUnfolderBase]: 4977/7543 cut-off events. [2024-06-27 23:31:51,389 INFO L125 PetriNetUnfolderBase]: For 720207/720235 co-relation queries the response was YES. [2024-06-27 23:31:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73426 conditions, 7543 events. 4977/7543 cut-off events. For 720207/720235 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 43135 event pairs, 1069 based on Foata normal form. 22/7561 useless extension candidates. Maximal degree in co-relation 73257. Up to 6789 conditions per place. [2024-06-27 23:31:51,512 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 610 selfloop transitions, 157 changer transitions 0/770 dead transitions. [2024-06-27 23:31:51,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 770 transitions, 16165 flow [2024-06-27 23:31:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 23:31:51,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-27 23:31:51,514 INFO L175 Difference]: Start difference. First operand has 366 places, 745 transitions, 14132 flow. Second operand 9 states and 157 transitions. [2024-06-27 23:31:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 770 transitions, 16165 flow [2024-06-27 23:31:53,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 770 transitions, 16023 flow, removed 70 selfloop flow, removed 1 redundant places. [2024-06-27 23:31:53,803 INFO L231 Difference]: Finished difference. Result has 375 places, 746 transitions, 14356 flow [2024-06-27 23:31:53,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13990, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14356, PETRI_PLACES=375, PETRI_TRANSITIONS=746} [2024-06-27 23:31:53,803 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-27 23:31:53,804 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 746 transitions, 14356 flow [2024-06-27 23:31:53,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:53,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:53,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:53,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:31:53,804 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:31:53,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1141751911, now seen corresponding path program 6 times [2024-06-27 23:31:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:53,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008430005] [2024-06-27 23:31:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:53,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:55,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008430005] [2024-06-27 23:31:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008430005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:55,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510603512] [2024-06-27 23:31:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:56,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:31:56,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 746 transitions, 14356 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:56,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:56,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:31:56,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:58,332 INFO L124 PetriNetUnfolderBase]: 5074/7677 cut-off events. [2024-06-27 23:31:58,332 INFO L125 PetriNetUnfolderBase]: For 752448/752468 co-relation queries the response was YES. [2024-06-27 23:31:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75208 conditions, 7677 events. 5074/7677 cut-off events. For 752448/752468 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 43919 event pairs, 1048 based on Foata normal form. 18/7692 useless extension candidates. Maximal degree in co-relation 75035. Up to 6396 conditions per place. [2024-06-27 23:31:58,439 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 500 selfloop transitions, 303 changer transitions 0/806 dead transitions. [2024-06-27 23:31:58,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 806 transitions, 16693 flow [2024-06-27 23:31:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 23:31:58,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213414634146342 [2024-06-27 23:31:58,441 INFO L175 Difference]: Start difference. First operand has 375 places, 746 transitions, 14356 flow. Second operand 8 states and 171 transitions. [2024-06-27 23:31:58,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 806 transitions, 16693 flow [2024-06-27 23:32:00,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 806 transitions, 16380 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:00,591 INFO L231 Difference]: Finished difference. Result has 380 places, 774 transitions, 15428 flow [2024-06-27 23:32:00,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14043, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15428, PETRI_PLACES=380, PETRI_TRANSITIONS=774} [2024-06-27 23:32:00,592 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-27 23:32:00,592 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 774 transitions, 15428 flow [2024-06-27 23:32:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:00,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:00,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:00,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:32:00,592 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:00,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2133370385, now seen corresponding path program 5 times [2024-06-27 23:32:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554840085] [2024-06-27 23:32:00,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:00,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554840085] [2024-06-27 23:32:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554840085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135298335] [2024-06-27 23:32:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:02,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:32:02,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 774 transitions, 15428 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:02,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:02,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:32:02,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:04,858 INFO L124 PetriNetUnfolderBase]: 5090/7702 cut-off events. [2024-06-27 23:32:04,858 INFO L125 PetriNetUnfolderBase]: For 786705/786736 co-relation queries the response was YES. [2024-06-27 23:32:04,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78044 conditions, 7702 events. 5090/7702 cut-off events. For 786705/786736 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 44011 event pairs, 1038 based on Foata normal form. 26/7725 useless extension candidates. Maximal degree in co-relation 77868. Up to 7269 conditions per place. [2024-06-27 23:32:04,985 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 675 selfloop transitions, 117 changer transitions 0/795 dead transitions. [2024-06-27 23:32:04,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 795 transitions, 17133 flow [2024-06-27 23:32:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 23:32:04,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-27 23:32:04,987 INFO L175 Difference]: Start difference. First operand has 380 places, 774 transitions, 15428 flow. Second operand 8 states and 146 transitions. [2024-06-27 23:32:04,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 795 transitions, 17133 flow [2024-06-27 23:32:07,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 795 transitions, 16677 flow, removed 100 selfloop flow, removed 3 redundant places. [2024-06-27 23:32:07,730 INFO L231 Difference]: Finished difference. Result has 385 places, 777 transitions, 15273 flow [2024-06-27 23:32:07,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14972, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15273, PETRI_PLACES=385, PETRI_TRANSITIONS=777} [2024-06-27 23:32:07,730 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 23:32:07,731 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 777 transitions, 15273 flow [2024-06-27 23:32:07,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:07,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:07,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:32:07,732 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:07,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash -52713051, now seen corresponding path program 7 times [2024-06-27 23:32:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:07,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270346881] [2024-06-27 23:32:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:07,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:09,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270346881] [2024-06-27 23:32:09,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270346881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:09,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:09,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:09,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041245795] [2024-06-27 23:32:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:09,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:09,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:09,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:32:09,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 777 transitions, 15273 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:09,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:09,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:32:09,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:12,002 INFO L124 PetriNetUnfolderBase]: 5210/7870 cut-off events. [2024-06-27 23:32:12,002 INFO L125 PetriNetUnfolderBase]: For 806459/806490 co-relation queries the response was YES. [2024-06-27 23:32:12,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78166 conditions, 7870 events. 5210/7870 cut-off events. For 806459/806490 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45063 event pairs, 1034 based on Foata normal form. 28/7895 useless extension candidates. Maximal degree in co-relation 77989. Up to 6838 conditions per place. [2024-06-27 23:32:12,142 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 607 selfloop transitions, 221 changer transitions 0/831 dead transitions. [2024-06-27 23:32:12,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 831 transitions, 17584 flow [2024-06-27 23:32:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 23:32:12,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2024-06-27 23:32:12,144 INFO L175 Difference]: Start difference. First operand has 385 places, 777 transitions, 15273 flow. Second operand 8 states and 158 transitions. [2024-06-27 23:32:12,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 831 transitions, 17584 flow [2024-06-27 23:32:14,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 831 transitions, 17334 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 23:32:14,642 INFO L231 Difference]: Finished difference. Result has 390 places, 803 transitions, 16024 flow [2024-06-27 23:32:14,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15023, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16024, PETRI_PLACES=390, PETRI_TRANSITIONS=803} [2024-06-27 23:32:14,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-27 23:32:14,643 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 803 transitions, 16024 flow [2024-06-27 23:32:14,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:14,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:14,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:14,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:32:14,644 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:14,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:14,645 INFO L85 PathProgramCache]: Analyzing trace with hash -53059011, now seen corresponding path program 8 times [2024-06-27 23:32:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501558772] [2024-06-27 23:32:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:14,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:16,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:16,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501558772] [2024-06-27 23:32:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501558772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:16,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682407296] [2024-06-27 23:32:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:16,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:32:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 803 transitions, 16024 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:16,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:32:16,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:19,205 INFO L124 PetriNetUnfolderBase]: 5284/7974 cut-off events. [2024-06-27 23:32:19,205 INFO L125 PetriNetUnfolderBase]: For 821089/821120 co-relation queries the response was YES. [2024-06-27 23:32:19,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79921 conditions, 7974 events. 5284/7974 cut-off events. For 821089/821120 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 45699 event pairs, 1038 based on Foata normal form. 28/7999 useless extension candidates. Maximal degree in co-relation 79741. Up to 6906 conditions per place. [2024-06-27 23:32:19,339 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 618 selfloop transitions, 225 changer transitions 0/846 dead transitions. [2024-06-27 23:32:19,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 846 transitions, 18177 flow [2024-06-27 23:32:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-27 23:32:19,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49085365853658536 [2024-06-27 23:32:19,340 INFO L175 Difference]: Start difference. First operand has 390 places, 803 transitions, 16024 flow. Second operand 8 states and 161 transitions. [2024-06-27 23:32:19,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 846 transitions, 18177 flow [2024-06-27 23:32:22,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 846 transitions, 17688 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-27 23:32:22,302 INFO L231 Difference]: Finished difference. Result has 395 places, 817 transitions, 16270 flow [2024-06-27 23:32:22,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15544, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16270, PETRI_PLACES=395, PETRI_TRANSITIONS=817} [2024-06-27 23:32:22,303 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-27 23:32:22,303 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 817 transitions, 16270 flow [2024-06-27 23:32:22,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:22,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:22,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:32:22,303 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:22,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1889437599, now seen corresponding path program 4 times [2024-06-27 23:32:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701848762] [2024-06-27 23:32:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:23,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701848762] [2024-06-27 23:32:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701848762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:23,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:23,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:23,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397768090] [2024-06-27 23:32:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:23,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:23,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 817 transitions, 16270 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:23,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:23,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:23,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:26,276 INFO L124 PetriNetUnfolderBase]: 5324/8058 cut-off events. [2024-06-27 23:32:26,276 INFO L125 PetriNetUnfolderBase]: For 846521/846524 co-relation queries the response was YES. [2024-06-27 23:32:26,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80609 conditions, 8058 events. 5324/8058 cut-off events. For 846521/846524 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 46628 event pairs, 1608 based on Foata normal form. 8/8062 useless extension candidates. Maximal degree in co-relation 80427. Up to 7443 conditions per place. [2024-06-27 23:32:26,429 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 695 selfloop transitions, 153 changer transitions 0/851 dead transitions. [2024-06-27 23:32:26,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 851 transitions, 18345 flow [2024-06-27 23:32:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 23:32:26,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 23:32:26,430 INFO L175 Difference]: Start difference. First operand has 395 places, 817 transitions, 16270 flow. Second operand 8 states and 140 transitions. [2024-06-27 23:32:26,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 851 transitions, 18345 flow [2024-06-27 23:32:28,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 851 transitions, 17908 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 23:32:28,897 INFO L231 Difference]: Finished difference. Result has 398 places, 828 transitions, 16415 flow [2024-06-27 23:32:28,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15833, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16415, PETRI_PLACES=398, PETRI_TRANSITIONS=828} [2024-06-27 23:32:28,898 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-27 23:32:28,898 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 828 transitions, 16415 flow [2024-06-27 23:32:28,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:28,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:28,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:28,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:32:28,899 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:28,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:28,899 INFO L85 PathProgramCache]: Analyzing trace with hash 256260695, now seen corresponding path program 5 times [2024-06-27 23:32:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:28,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261197819] [2024-06-27 23:32:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:30,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261197819] [2024-06-27 23:32:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261197819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:30,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925597335] [2024-06-27 23:32:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:30,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:30,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:30,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 828 transitions, 16415 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:30,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:30,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:30,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:32,559 INFO L124 PetriNetUnfolderBase]: 5413/8179 cut-off events. [2024-06-27 23:32:32,559 INFO L125 PetriNetUnfolderBase]: For 870165/870168 co-relation queries the response was YES. [2024-06-27 23:32:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82243 conditions, 8179 events. 5413/8179 cut-off events. For 870165/870168 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 47388 event pairs, 1624 based on Foata normal form. 6/8181 useless extension candidates. Maximal degree in co-relation 82059. Up to 7524 conditions per place. [2024-06-27 23:32:32,699 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 733 selfloop transitions, 157 changer transitions 0/893 dead transitions. [2024-06-27 23:32:32,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 893 transitions, 19678 flow [2024-06-27 23:32:32,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 23:32:32,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-27 23:32:32,701 INFO L175 Difference]: Start difference. First operand has 398 places, 828 transitions, 16415 flow. Second operand 8 states and 141 transitions. [2024-06-27 23:32:32,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 893 transitions, 19678 flow [2024-06-27 23:32:35,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 893 transitions, 19210 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-06-27 23:32:35,539 INFO L231 Difference]: Finished difference. Result has 403 places, 870 transitions, 17415 flow [2024-06-27 23:32:35,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15970, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17415, PETRI_PLACES=403, PETRI_TRANSITIONS=870} [2024-06-27 23:32:35,539 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-06-27 23:32:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 870 transitions, 17415 flow [2024-06-27 23:32:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:35,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:35,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:32:35,540 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:35,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash 262689785, now seen corresponding path program 6 times [2024-06-27 23:32:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450682689] [2024-06-27 23:32:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:36,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:36,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450682689] [2024-06-27 23:32:36,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450682689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:36,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:36,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:36,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812399061] [2024-06-27 23:32:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:36,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:37,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:37,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 870 transitions, 17415 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:37,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:37,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:39,525 INFO L124 PetriNetUnfolderBase]: 5439/8213 cut-off events. [2024-06-27 23:32:39,526 INFO L125 PetriNetUnfolderBase]: For 887715/887718 co-relation queries the response was YES. [2024-06-27 23:32:39,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83687 conditions, 8213 events. 5439/8213 cut-off events. For 887715/887718 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 47498 event pairs, 1632 based on Foata normal form. 4/8213 useless extension candidates. Maximal degree in co-relation 83499. Up to 7549 conditions per place. [2024-06-27 23:32:39,663 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 727 selfloop transitions, 167 changer transitions 0/897 dead transitions. [2024-06-27 23:32:39,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 897 transitions, 19945 flow [2024-06-27 23:32:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:39,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 23:32:39,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176829268292683 [2024-06-27 23:32:39,665 INFO L175 Difference]: Start difference. First operand has 403 places, 870 transitions, 17415 flow. Second operand 8 states and 137 transitions. [2024-06-27 23:32:39,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 897 transitions, 19945 flow [2024-06-27 23:32:42,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 897 transitions, 19784 flow, removed 79 selfloop flow, removed 1 redundant places. [2024-06-27 23:32:42,450 INFO L231 Difference]: Finished difference. Result has 412 places, 879 transitions, 17951 flow [2024-06-27 23:32:42,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=17254, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17951, PETRI_PLACES=412, PETRI_TRANSITIONS=879} [2024-06-27 23:32:42,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-27 23:32:42,451 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 879 transitions, 17951 flow [2024-06-27 23:32:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:42,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:42,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:42,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:32:42,452 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:42,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:42,452 INFO L85 PathProgramCache]: Analyzing trace with hash -286219925, now seen corresponding path program 7 times [2024-06-27 23:32:42,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:42,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426953115] [2024-06-27 23:32:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:42,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426953115] [2024-06-27 23:32:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426953115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:43,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891846016] [2024-06-27 23:32:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:43,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:43,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:43,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 879 transitions, 17951 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:43,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:43,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:43,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:46,592 INFO L124 PetriNetUnfolderBase]: 5467/8240 cut-off events. [2024-06-27 23:32:46,592 INFO L125 PetriNetUnfolderBase]: For 912823/912823 co-relation queries the response was YES. [2024-06-27 23:32:46,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85068 conditions, 8240 events. 5467/8240 cut-off events. For 912823/912823 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 47498 event pairs, 1682 based on Foata normal form. 2/8241 useless extension candidates. Maximal degree in co-relation 84875. Up to 8106 conditions per place. [2024-06-27 23:32:46,712 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 867 selfloop transitions, 45 changer transitions 0/915 dead transitions. [2024-06-27 23:32:46,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 915 transitions, 20472 flow [2024-06-27 23:32:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 23:32:46,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-27 23:32:46,713 INFO L175 Difference]: Start difference. First operand has 412 places, 879 transitions, 17951 flow. Second operand 9 states and 146 transitions. [2024-06-27 23:32:46,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 915 transitions, 20472 flow [2024-06-27 23:32:49,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 915 transitions, 20223 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 23:32:49,477 INFO L231 Difference]: Finished difference. Result has 420 places, 895 transitions, 18303 flow [2024-06-27 23:32:49,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=17714, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18303, PETRI_PLACES=420, PETRI_TRANSITIONS=895} [2024-06-27 23:32:49,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-27 23:32:49,478 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 895 transitions, 18303 flow [2024-06-27 23:32:49,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:49,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:49,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:32:49,478 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:49,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:49,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1318386973, now seen corresponding path program 8 times [2024-06-27 23:32:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000229235] [2024-06-27 23:32:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:50,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:50,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000229235] [2024-06-27 23:32:50,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000229235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:50,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:50,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:50,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670844620] [2024-06-27 23:32:50,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:50,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:50,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:51,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:51,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 895 transitions, 18303 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:51,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:51,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:51,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:53,825 INFO L124 PetriNetUnfolderBase]: 5482/8263 cut-off events. [2024-06-27 23:32:53,825 INFO L125 PetriNetUnfolderBase]: For 936806/936806 co-relation queries the response was YES. [2024-06-27 23:32:53,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85310 conditions, 8263 events. 5482/8263 cut-off events. For 936806/936806 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 47691 event pairs, 1672 based on Foata normal form. 3/8265 useless extension candidates. Maximal degree in co-relation 85114. Up to 8056 conditions per place. [2024-06-27 23:32:53,949 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 863 selfloop transitions, 58 changer transitions 0/924 dead transitions. [2024-06-27 23:32:53,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 924 transitions, 20459 flow [2024-06-27 23:32:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 23:32:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-27 23:32:53,964 INFO L175 Difference]: Start difference. First operand has 420 places, 895 transitions, 18303 flow. Second operand 8 states and 133 transitions. [2024-06-27 23:32:53,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 924 transitions, 20459 flow [2024-06-27 23:32:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 924 transitions, 20356 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 23:32:56,882 INFO L231 Difference]: Finished difference. Result has 424 places, 900 transitions, 18469 flow [2024-06-27 23:32:56,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18200, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18469, PETRI_PLACES=424, PETRI_TRANSITIONS=900} [2024-06-27 23:32:56,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 23:32:56,883 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 900 transitions, 18469 flow [2024-06-27 23:32:56,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:56,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:56,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:56,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:32:56,884 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:32:56,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:56,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1474969059, now seen corresponding path program 9 times [2024-06-27 23:32:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255919035] [2024-06-27 23:32:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255919035] [2024-06-27 23:32:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255919035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:32:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560605038] [2024-06-27 23:32:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:32:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:32:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:32:58,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:32:58,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 900 transitions, 18469 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:58,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:58,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:32:58,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:00,747 INFO L124 PetriNetUnfolderBase]: 5484/8263 cut-off events. [2024-06-27 23:33:00,748 INFO L125 PetriNetUnfolderBase]: For 948517/948517 co-relation queries the response was YES. [2024-06-27 23:33:00,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85842 conditions, 8263 events. 5484/8263 cut-off events. For 948517/948517 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 47607 event pairs, 1689 based on Foata normal form. 2/8264 useless extension candidates. Maximal degree in co-relation 85644. Up to 8153 conditions per place. [2024-06-27 23:33:00,899 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 885 selfloop transitions, 30 changer transitions 0/918 dead transitions. [2024-06-27 23:33:00,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 918 transitions, 20435 flow [2024-06-27 23:33:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 23:33:00,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 23:33:00,900 INFO L175 Difference]: Start difference. First operand has 424 places, 900 transitions, 18469 flow. Second operand 8 states and 129 transitions. [2024-06-27 23:33:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 918 transitions, 20435 flow [2024-06-27 23:33:03,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 918 transitions, 20228 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-27 23:33:03,996 INFO L231 Difference]: Finished difference. Result has 427 places, 903 transitions, 18422 flow [2024-06-27 23:33:03,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18262, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18422, PETRI_PLACES=427, PETRI_TRANSITIONS=903} [2024-06-27 23:33:03,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-27 23:33:03,997 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 903 transitions, 18422 flow [2024-06-27 23:33:03,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:03,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:03,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:33:03,997 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:03,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1553827023, now seen corresponding path program 10 times [2024-06-27 23:33:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426762998] [2024-06-27 23:33:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:03,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:05,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:05,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426762998] [2024-06-27 23:33:05,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426762998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:05,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:05,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337227078] [2024-06-27 23:33:05,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:05,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:05,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:05,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:05,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 903 transitions, 18422 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:05,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:05,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:05,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:07,864 INFO L124 PetriNetUnfolderBase]: 5478/8257 cut-off events. [2024-06-27 23:33:07,864 INFO L125 PetriNetUnfolderBase]: For 957353/957353 co-relation queries the response was YES. [2024-06-27 23:33:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85825 conditions, 8257 events. 5478/8257 cut-off events. For 957353/957353 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 47637 event pairs, 1678 based on Foata normal form. 2/8258 useless extension candidates. Maximal degree in co-relation 85626. Up to 8035 conditions per place. [2024-06-27 23:33:08,017 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 852 selfloop transitions, 83 changer transitions 0/938 dead transitions. [2024-06-27 23:33:08,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 938 transitions, 21024 flow [2024-06-27 23:33:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 23:33:08,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-27 23:33:08,018 INFO L175 Difference]: Start difference. First operand has 427 places, 903 transitions, 18422 flow. Second operand 8 states and 132 transitions. [2024-06-27 23:33:08,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 938 transitions, 21024 flow [2024-06-27 23:33:11,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 938 transitions, 20912 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 23:33:11,295 INFO L231 Difference]: Finished difference. Result has 431 places, 919 transitions, 18999 flow [2024-06-27 23:33:11,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18310, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=823, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18999, PETRI_PLACES=431, PETRI_TRANSITIONS=919} [2024-06-27 23:33:11,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-27 23:33:11,297 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 919 transitions, 18999 flow [2024-06-27 23:33:11,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:11,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:11,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:11,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:33:11,297 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:11,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2093625657, now seen corresponding path program 11 times [2024-06-27 23:33:11,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:11,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981327853] [2024-06-27 23:33:11,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:11,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:12,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:12,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981327853] [2024-06-27 23:33:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981327853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:12,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2195768] [2024-06-27 23:33:12,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:12,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:12,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:12,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 919 transitions, 18999 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:12,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:12,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:12,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:15,201 INFO L124 PetriNetUnfolderBase]: 5509/8298 cut-off events. [2024-06-27 23:33:15,201 INFO L125 PetriNetUnfolderBase]: For 989544/989544 co-relation queries the response was YES. [2024-06-27 23:33:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87185 conditions, 8298 events. 5509/8298 cut-off events. For 989544/989544 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 47859 event pairs, 1691 based on Foata normal form. 2/8299 useless extension candidates. Maximal degree in co-relation 86983. Up to 8151 conditions per place. [2024-06-27 23:33:15,348 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 894 selfloop transitions, 52 changer transitions 0/949 dead transitions. [2024-06-27 23:33:15,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 949 transitions, 21601 flow [2024-06-27 23:33:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 23:33:15,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-27 23:33:15,349 INFO L175 Difference]: Start difference. First operand has 431 places, 919 transitions, 18999 flow. Second operand 8 states and 130 transitions. [2024-06-27 23:33:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 949 transitions, 21601 flow [2024-06-27 23:33:18,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 949 transitions, 21364 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-27 23:33:18,740 INFO L231 Difference]: Finished difference. Result has 434 places, 933 transitions, 19343 flow [2024-06-27 23:33:18,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18774, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19343, PETRI_PLACES=434, PETRI_TRANSITIONS=933} [2024-06-27 23:33:18,741 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-27 23:33:18,741 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 933 transitions, 19343 flow [2024-06-27 23:33:18,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:18,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:18,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:18,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:33:18,742 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:18,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2093388507, now seen corresponding path program 12 times [2024-06-27 23:33:18,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:18,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472282696] [2024-06-27 23:33:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:20,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472282696] [2024-06-27 23:33:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472282696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:20,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:20,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959891057] [2024-06-27 23:33:20,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:20,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:20,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:20,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 933 transitions, 19343 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:20,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:20,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:22,571 INFO L124 PetriNetUnfolderBase]: 5503/8290 cut-off events. [2024-06-27 23:33:22,572 INFO L125 PetriNetUnfolderBase]: For 1000584/1000584 co-relation queries the response was YES. [2024-06-27 23:33:22,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87319 conditions, 8290 events. 5503/8290 cut-off events. For 1000584/1000584 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 47812 event pairs, 1690 based on Foata normal form. 2/8291 useless extension candidates. Maximal degree in co-relation 87118. Up to 8166 conditions per place. [2024-06-27 23:33:22,725 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 906 selfloop transitions, 38 changer transitions 0/947 dead transitions. [2024-06-27 23:33:22,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 947 transitions, 21302 flow [2024-06-27 23:33:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:22,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 23:33:22,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-27 23:33:22,726 INFO L175 Difference]: Start difference. First operand has 434 places, 933 transitions, 19343 flow. Second operand 8 states and 127 transitions. [2024-06-27 23:33:22,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 947 transitions, 21302 flow [2024-06-27 23:33:26,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 947 transitions, 21046 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-06-27 23:33:26,985 INFO L231 Difference]: Finished difference. Result has 439 places, 933 transitions, 19171 flow [2024-06-27 23:33:26,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19087, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19171, PETRI_PLACES=439, PETRI_TRANSITIONS=933} [2024-06-27 23:33:26,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-27 23:33:26,986 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 933 transitions, 19171 flow [2024-06-27 23:33:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:26,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:26,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:33:26,986 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:26,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2127295885, now seen corresponding path program 13 times [2024-06-27 23:33:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:26,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329834510] [2024-06-27 23:33:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:28,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:28,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329834510] [2024-06-27 23:33:28,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329834510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:28,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:28,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683017547] [2024-06-27 23:33:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:28,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:28,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:28,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:28,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:28,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:28,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 933 transitions, 19171 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:28,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:28,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:28,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:31,089 INFO L124 PetriNetUnfolderBase]: 5508/8298 cut-off events. [2024-06-27 23:33:31,089 INFO L125 PetriNetUnfolderBase]: For 1011658/1011661 co-relation queries the response was YES. [2024-06-27 23:33:31,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87491 conditions, 8298 events. 5508/8298 cut-off events. For 1011658/1011661 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47886 event pairs, 1685 based on Foata normal form. 3/8297 useless extension candidates. Maximal degree in co-relation 87288. Up to 8169 conditions per place. [2024-06-27 23:33:31,229 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 906 selfloop transitions, 40 changer transitions 0/949 dead transitions. [2024-06-27 23:33:31,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 949 transitions, 21437 flow [2024-06-27 23:33:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 23:33:31,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-27 23:33:31,231 INFO L175 Difference]: Start difference. First operand has 439 places, 933 transitions, 19171 flow. Second operand 8 states and 126 transitions. [2024-06-27 23:33:31,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 949 transitions, 21437 flow [2024-06-27 23:33:34,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 949 transitions, 21317 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:34,824 INFO L231 Difference]: Finished difference. Result has 441 places, 938 transitions, 19303 flow [2024-06-27 23:33:34,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19051, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19303, PETRI_PLACES=441, PETRI_TRANSITIONS=938} [2024-06-27 23:33:34,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 23:33:34,825 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 938 transitions, 19303 flow [2024-06-27 23:33:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:34,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:34,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:34,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:33:34,826 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:34,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash 14959109, now seen corresponding path program 14 times [2024-06-27 23:33:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776360499] [2024-06-27 23:33:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:36,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:36,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:36,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776360499] [2024-06-27 23:33:36,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776360499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:36,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:36,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:36,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002008212] [2024-06-27 23:33:36,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:36,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:36,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:36,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:36,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 938 transitions, 19303 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:36,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:38,803 INFO L124 PetriNetUnfolderBase]: 5510/8301 cut-off events. [2024-06-27 23:33:38,804 INFO L125 PetriNetUnfolderBase]: For 1030418/1030421 co-relation queries the response was YES. [2024-06-27 23:33:38,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87629 conditions, 8301 events. 5510/8301 cut-off events. For 1030418/1030421 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47878 event pairs, 1685 based on Foata normal form. 4/8301 useless extension candidates. Maximal degree in co-relation 87425. Up to 8176 conditions per place. [2024-06-27 23:33:38,960 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 911 selfloop transitions, 37 changer transitions 0/951 dead transitions. [2024-06-27 23:33:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 951 transitions, 21327 flow [2024-06-27 23:33:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 23:33:38,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-27 23:33:38,961 INFO L175 Difference]: Start difference. First operand has 441 places, 938 transitions, 19303 flow. Second operand 8 states and 124 transitions. [2024-06-27 23:33:38,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 951 transitions, 21327 flow [2024-06-27 23:33:42,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 951 transitions, 21139 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-27 23:33:42,933 INFO L231 Difference]: Finished difference. Result has 445 places, 941 transitions, 19299 flow [2024-06-27 23:33:42,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19115, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19299, PETRI_PLACES=445, PETRI_TRANSITIONS=941} [2024-06-27 23:33:42,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-27 23:33:42,934 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 941 transitions, 19299 flow [2024-06-27 23:33:42,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:42,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:42,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:42,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:33:42,935 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:42,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash -116621819, now seen corresponding path program 15 times [2024-06-27 23:33:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:42,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6368108] [2024-06-27 23:33:42,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:44,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:44,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6368108] [2024-06-27 23:33:44,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6368108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:44,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:44,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:33:44,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13764469] [2024-06-27 23:33:44,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:44,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:33:44,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:33:44,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:33:44,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:44,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 941 transitions, 19299 flow. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:44,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:44,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:44,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:46,901 INFO L124 PetriNetUnfolderBase]: 5504/8293 cut-off events. [2024-06-27 23:33:46,902 INFO L125 PetriNetUnfolderBase]: For 1039788/1039791 co-relation queries the response was YES. [2024-06-27 23:33:47,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87773 conditions, 8293 events. 5504/8293 cut-off events. For 1039788/1039791 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47837 event pairs, 1685 based on Foata normal form. 4/8293 useless extension candidates. Maximal degree in co-relation 87567. Up to 8105 conditions per place. [2024-06-27 23:33:47,062 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 891 selfloop transitions, 58 changer transitions 0/952 dead transitions. [2024-06-27 23:33:47,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 952 transitions, 21421 flow [2024-06-27 23:33:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:33:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:33:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 23:33:47,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 23:33:47,064 INFO L175 Difference]: Start difference. First operand has 445 places, 941 transitions, 19299 flow. Second operand 8 states and 129 transitions. [2024-06-27 23:33:47,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 952 transitions, 21421 flow [2024-06-27 23:33:51,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 952 transitions, 21199 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-27 23:33:51,023 INFO L231 Difference]: Finished difference. Result has 447 places, 941 transitions, 19200 flow [2024-06-27 23:33:51,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19077, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19200, PETRI_PLACES=447, PETRI_TRANSITIONS=941} [2024-06-27 23:33:51,023 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 405 predicate places. [2024-06-27 23:33:51,024 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 941 transitions, 19200 flow [2024-06-27 23:33:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:51,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:51,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:51,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:33:51,024 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:51,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash -521799943, now seen corresponding path program 9 times [2024-06-27 23:33:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:51,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636159379] [2024-06-27 23:33:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:51,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636159379] [2024-06-27 23:33:52,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636159379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:52,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:33:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317026093] [2024-06-27 23:33:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:33:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:33:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:33:52,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:33:52,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 941 transitions, 19200 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:33:52,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:52,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:33:52,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:55,422 INFO L124 PetriNetUnfolderBase]: 5524/8320 cut-off events. [2024-06-27 23:33:55,423 INFO L125 PetriNetUnfolderBase]: For 1057672/1057678 co-relation queries the response was YES. [2024-06-27 23:33:55,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88182 conditions, 8320 events. 5524/8320 cut-off events. For 1057672/1057678 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 47980 event pairs, 1681 based on Foata normal form. 6/8323 useless extension candidates. Maximal degree in co-relation 87975. Up to 8118 conditions per place. [2024-06-27 23:33:55,572 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 899 selfloop transitions, 63 changer transitions 0/965 dead transitions. [2024-06-27 23:33:55,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 965 transitions, 21399 flow [2024-06-27 23:33:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:33:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:33:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 23:33:55,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-27 23:33:55,573 INFO L175 Difference]: Start difference. First operand has 447 places, 941 transitions, 19200 flow. Second operand 9 states and 141 transitions. [2024-06-27 23:33:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 965 transitions, 21399 flow [2024-06-27 23:33:59,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 965 transitions, 20969 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:59,366 INFO L231 Difference]: Finished difference. Result has 449 places, 950 transitions, 19130 flow [2024-06-27 23:33:59,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18770, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19130, PETRI_PLACES=449, PETRI_TRANSITIONS=950} [2024-06-27 23:33:59,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 23:33:59,367 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 950 transitions, 19130 flow [2024-06-27 23:33:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:33:59,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:59,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:59,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:33:59,367 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:33:59,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:59,368 INFO L85 PathProgramCache]: Analyzing trace with hash 251618813, now seen corresponding path program 1 times [2024-06-27 23:33:59,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:59,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049198794] [2024-06-27 23:33:59,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:59,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:01,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049198794] [2024-06-27 23:34:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049198794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:01,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962893396] [2024-06-27 23:34:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:01,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 23:34:01,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 950 transitions, 19130 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:01,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:01,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 23:34:01,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:04,142 INFO L124 PetriNetUnfolderBase]: 5140/7871 cut-off events. [2024-06-27 23:34:04,142 INFO L125 PetriNetUnfolderBase]: For 1063177/1063399 co-relation queries the response was YES. [2024-06-27 23:34:04,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82979 conditions, 7871 events. 5140/7871 cut-off events. For 1063177/1063399 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 46919 event pairs, 1556 based on Foata normal form. 136/7904 useless extension candidates. Maximal degree in co-relation 82772. Up to 7090 conditions per place. [2024-06-27 23:34:04,292 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 715 selfloop transitions, 69 changer transitions 0/963 dead transitions. [2024-06-27 23:34:04,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 963 transitions, 20810 flow [2024-06-27 23:34:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:34:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:34:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 23:34:04,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-27 23:34:04,294 INFO L175 Difference]: Start difference. First operand has 449 places, 950 transitions, 19130 flow. Second operand 8 states and 135 transitions. [2024-06-27 23:34:04,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 963 transitions, 20810 flow [2024-06-27 23:34:08,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 963 transitions, 20613 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 23:34:08,452 INFO L231 Difference]: Finished difference. Result has 451 places, 953 transitions, 19182 flow [2024-06-27 23:34:08,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18933, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19182, PETRI_PLACES=451, PETRI_TRANSITIONS=953} [2024-06-27 23:34:08,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-27 23:34:08,453 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 953 transitions, 19182 flow [2024-06-27 23:34:08,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:08,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:08,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:34:08,453 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 237321117, now seen corresponding path program 10 times [2024-06-27 23:34:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050959308] [2024-06-27 23:34:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:10,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:10,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050959308] [2024-06-27 23:34:10,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050959308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:10,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:10,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:10,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634596737] [2024-06-27 23:34:10,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:10,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:10,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:10,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:10,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 953 transitions, 19182 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:10,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:10,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:10,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:12,849 INFO L124 PetriNetUnfolderBase]: 5522/8319 cut-off events. [2024-06-27 23:34:12,849 INFO L125 PetriNetUnfolderBase]: For 1076858/1076864 co-relation queries the response was YES. [2024-06-27 23:34:12,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88066 conditions, 8319 events. 5522/8319 cut-off events. For 1076858/1076864 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 48027 event pairs, 1673 based on Foata normal form. 6/8322 useless extension candidates. Maximal degree in co-relation 87858. Up to 8179 conditions per place. [2024-06-27 23:34:13,003 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 923 selfloop transitions, 45 changer transitions 0/971 dead transitions. [2024-06-27 23:34:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 971 transitions, 21286 flow [2024-06-27 23:34:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 23:34:13,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-27 23:34:13,007 INFO L175 Difference]: Start difference. First operand has 451 places, 953 transitions, 19182 flow. Second operand 9 states and 138 transitions. [2024-06-27 23:34:13,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 971 transitions, 21286 flow [2024-06-27 23:34:17,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 971 transitions, 21124 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 23:34:17,130 INFO L231 Difference]: Finished difference. Result has 455 places, 958 transitions, 19252 flow [2024-06-27 23:34:17,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19020, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19252, PETRI_PLACES=455, PETRI_TRANSITIONS=958} [2024-06-27 23:34:17,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-27 23:34:17,133 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 958 transitions, 19252 flow [2024-06-27 23:34:17,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:17,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:17,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:34:17,134 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:17,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash -116744641, now seen corresponding path program 11 times [2024-06-27 23:34:17,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:17,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071594707] [2024-06-27 23:34:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:19,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071594707] [2024-06-27 23:34:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071594707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:19,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:19,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543925954] [2024-06-27 23:34:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:19,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:19,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:19,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 958 transitions, 19252 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:19,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:19,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:19,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:21,843 INFO L124 PetriNetUnfolderBase]: 5532/8333 cut-off events. [2024-06-27 23:34:21,844 INFO L125 PetriNetUnfolderBase]: For 1076661/1076667 co-relation queries the response was YES. [2024-06-27 23:34:21,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88117 conditions, 8333 events. 5532/8333 cut-off events. For 1076661/1076667 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 48156 event pairs, 1673 based on Foata normal form. 6/8336 useless extension candidates. Maximal degree in co-relation 87908. Up to 8104 conditions per place. [2024-06-27 23:34:22,026 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 891 selfloop transitions, 82 changer transitions 0/976 dead transitions. [2024-06-27 23:34:22,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 976 transitions, 21547 flow [2024-06-27 23:34:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 23:34:22,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875338753387534 [2024-06-27 23:34:22,028 INFO L175 Difference]: Start difference. First operand has 455 places, 958 transitions, 19252 flow. Second operand 9 states and 143 transitions. [2024-06-27 23:34:22,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 976 transitions, 21547 flow [2024-06-27 23:34:26,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 976 transitions, 21173 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:26,263 INFO L231 Difference]: Finished difference. Result has 455 places, 962 transitions, 19152 flow [2024-06-27 23:34:26,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18878, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19152, PETRI_PLACES=455, PETRI_TRANSITIONS=962} [2024-06-27 23:34:26,264 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-27 23:34:26,264 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 962 transitions, 19152 flow [2024-06-27 23:34:26,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:26,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:26,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:26,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:34:26,265 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:26,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -162532693, now seen corresponding path program 6 times [2024-06-27 23:34:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821628309] [2024-06-27 23:34:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:28,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:28,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821628309] [2024-06-27 23:34:28,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821628309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:28,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:28,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:28,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079250144] [2024-06-27 23:34:28,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:28,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:28,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:28,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:28,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:28,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:28,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 962 transitions, 19152 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:28,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:28,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:28,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:31,169 INFO L124 PetriNetUnfolderBase]: 5522/8319 cut-off events. [2024-06-27 23:34:31,169 INFO L125 PetriNetUnfolderBase]: For 1083404/1083410 co-relation queries the response was YES. [2024-06-27 23:34:31,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87340 conditions, 8319 events. 5522/8319 cut-off events. For 1083404/1083410 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 48068 event pairs, 1679 based on Foata normal form. 8/8324 useless extension candidates. Maximal degree in co-relation 87133. Up to 8175 conditions per place. [2024-06-27 23:34:31,332 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 923 selfloop transitions, 49 changer transitions 0/975 dead transitions. [2024-06-27 23:34:31,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 975 transitions, 21153 flow [2024-06-27 23:34:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 23:34:31,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-27 23:34:31,334 INFO L175 Difference]: Start difference. First operand has 455 places, 962 transitions, 19152 flow. Second operand 9 states and 138 transitions. [2024-06-27 23:34:31,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 975 transitions, 21153 flow [2024-06-27 23:34:35,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 975 transitions, 20663 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-27 23:34:35,107 INFO L231 Difference]: Finished difference. Result has 457 places, 963 transitions, 18789 flow [2024-06-27 23:34:35,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18670, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18789, PETRI_PLACES=457, PETRI_TRANSITIONS=963} [2024-06-27 23:34:35,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 415 predicate places. [2024-06-27 23:34:35,108 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 963 transitions, 18789 flow [2024-06-27 23:34:35,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:35,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:35,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:35,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:34:35,108 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:35,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash -387481575, now seen corresponding path program 12 times [2024-06-27 23:34:35,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:35,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273820977] [2024-06-27 23:34:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:35,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:36,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273820977] [2024-06-27 23:34:36,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273820977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:36,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:36,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:34:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433069929] [2024-06-27 23:34:36,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:36,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:34:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:34:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:34:37,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:37,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 963 transitions, 18789 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:37,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:37,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:37,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:39,764 INFO L124 PetriNetUnfolderBase]: 5516/8311 cut-off events. [2024-06-27 23:34:39,764 INFO L125 PetriNetUnfolderBase]: For 1077439/1077445 co-relation queries the response was YES. [2024-06-27 23:34:39,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86125 conditions, 8311 events. 5516/8311 cut-off events. For 1077439/1077445 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 48020 event pairs, 1675 based on Foata normal form. 6/8314 useless extension candidates. Maximal degree in co-relation 85919. Up to 8108 conditions per place. [2024-06-27 23:34:39,911 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 906 selfloop transitions, 67 changer transitions 0/976 dead transitions. [2024-06-27 23:34:39,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 976 transitions, 20783 flow [2024-06-27 23:34:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 23:34:39,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-27 23:34:39,912 INFO L175 Difference]: Start difference. First operand has 457 places, 963 transitions, 18789 flow. Second operand 9 states and 141 transitions. [2024-06-27 23:34:39,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 976 transitions, 20783 flow [2024-06-27 23:34:43,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 976 transitions, 20633 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:34:43,654 INFO L231 Difference]: Finished difference. Result has 459 places, 963 transitions, 18780 flow [2024-06-27 23:34:43,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18639, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=896, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18780, PETRI_PLACES=459, PETRI_TRANSITIONS=963} [2024-06-27 23:34:43,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-06-27 23:34:43,655 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 963 transitions, 18780 flow [2024-06-27 23:34:43,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:34:43,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:43,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:34:43,656 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:43,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash 578124355, now seen corresponding path program 1 times [2024-06-27 23:34:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:43,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732410030] [2024-06-27 23:34:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:45,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:45,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732410030] [2024-06-27 23:34:45,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732410030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:45,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:45,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125664496] [2024-06-27 23:34:45,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:45,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:45,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:46,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:46,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 963 transitions, 18780 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:46,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:46,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:49,009 INFO L124 PetriNetUnfolderBase]: 5537/8342 cut-off events. [2024-06-27 23:34:49,009 INFO L125 PetriNetUnfolderBase]: For 1109246/1109246 co-relation queries the response was YES. [2024-06-27 23:34:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86790 conditions, 8342 events. 5537/8342 cut-off events. For 1109246/1109246 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 48183 event pairs, 1640 based on Foata normal form. 2/8343 useless extension candidates. Maximal degree in co-relation 86583. Up to 8191 conditions per place. [2024-06-27 23:34:49,141 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 954 selfloop transitions, 32 changer transitions 0/989 dead transitions. [2024-06-27 23:34:49,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 989 transitions, 21136 flow [2024-06-27 23:34:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 23:34:49,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2024-06-27 23:34:49,143 INFO L175 Difference]: Start difference. First operand has 459 places, 963 transitions, 18780 flow. Second operand 10 states and 154 transitions. [2024-06-27 23:34:49,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 989 transitions, 21136 flow [2024-06-27 23:34:53,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 989 transitions, 20924 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:53,185 INFO L231 Difference]: Finished difference. Result has 459 places, 967 transitions, 18747 flow [2024-06-27 23:34:53,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18570, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18747, PETRI_PLACES=459, PETRI_TRANSITIONS=967} [2024-06-27 23:34:53,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-06-27 23:34:53,186 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 967 transitions, 18747 flow [2024-06-27 23:34:53,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:53,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:53,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:53,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:34:53,187 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:34:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -4362569, now seen corresponding path program 2 times [2024-06-27 23:34:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976727813] [2024-06-27 23:34:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:55,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:55,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976727813] [2024-06-27 23:34:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976727813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:55,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:55,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:34:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131745090] [2024-06-27 23:34:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:34:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:34:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:34:55,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:34:55,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 967 transitions, 18747 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:55,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:55,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:34:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:58,331 INFO L124 PetriNetUnfolderBase]: 5532/8335 cut-off events. [2024-06-27 23:34:58,332 INFO L125 PetriNetUnfolderBase]: For 1099186/1099186 co-relation queries the response was YES. [2024-06-27 23:34:58,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86461 conditions, 8335 events. 5532/8335 cut-off events. For 1099186/1099186 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 48190 event pairs, 1685 based on Foata normal form. 2/8336 useless extension candidates. Maximal degree in co-relation 86255. Up to 8213 conditions per place. [2024-06-27 23:34:58,496 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 952 selfloop transitions, 28 changer transitions 0/983 dead transitions. [2024-06-27 23:34:58,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 983 transitions, 20763 flow [2024-06-27 23:34:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:58,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 23:34:58,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712737127371274 [2024-06-27 23:34:58,498 INFO L175 Difference]: Start difference. First operand has 459 places, 967 transitions, 18747 flow. Second operand 9 states and 137 transitions. [2024-06-27 23:34:58,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 983 transitions, 20763 flow [2024-06-27 23:35:01,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 983 transitions, 20635 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 23:35:01,845 INFO L231 Difference]: Finished difference. Result has 462 places, 967 transitions, 18680 flow [2024-06-27 23:35:01,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18619, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18680, PETRI_PLACES=462, PETRI_TRANSITIONS=967} [2024-06-27 23:35:01,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-27 23:35:01,846 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 967 transitions, 18680 flow [2024-06-27 23:35:01,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:01,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:01,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:35:01,846 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:01,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1590269157, now seen corresponding path program 3 times [2024-06-27 23:35:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295682346] [2024-06-27 23:35:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295682346] [2024-06-27 23:35:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295682346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:35:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096845029] [2024-06-27 23:35:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:35:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:35:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:35:03,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:35:03,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 967 transitions, 18680 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:35:03,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:03,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:35:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:06,715 INFO L124 PetriNetUnfolderBase]: 5540/8347 cut-off events. [2024-06-27 23:35:06,716 INFO L125 PetriNetUnfolderBase]: For 1119078/1119078 co-relation queries the response was YES. [2024-06-27 23:35:06,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86656 conditions, 8347 events. 5540/8347 cut-off events. For 1119078/1119078 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 48286 event pairs, 1686 based on Foata normal form. 2/8348 useless extension candidates. Maximal degree in co-relation 86448. Up to 8202 conditions per place. [2024-06-27 23:35:06,881 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 937 selfloop transitions, 43 changer transitions 0/983 dead transitions. [2024-06-27 23:35:06,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 983 transitions, 20746 flow [2024-06-27 23:35:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:35:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:35:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 23:35:06,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712737127371274 [2024-06-27 23:35:06,883 INFO L175 Difference]: Start difference. First operand has 462 places, 967 transitions, 18680 flow. Second operand 9 states and 137 transitions. [2024-06-27 23:35:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 983 transitions, 20746 flow [2024-06-27 23:35:10,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 983 transitions, 20685 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:35:10,879 INFO L231 Difference]: Finished difference. Result has 463 places, 969 transitions, 18770 flow [2024-06-27 23:35:10,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18619, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18770, PETRI_PLACES=463, PETRI_TRANSITIONS=969} [2024-06-27 23:35:10,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 421 predicate places. [2024-06-27 23:35:10,879 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 969 transitions, 18770 flow [2024-06-27 23:35:10,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:35:10,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:10,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:10,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:35:10,880 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1994340797, now seen corresponding path program 4 times [2024-06-27 23:35:10,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:10,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060204765] [2024-06-27 23:35:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:12,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:12,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060204765] [2024-06-27 23:35:12,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060204765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:12,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:12,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:35:12,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604527995] [2024-06-27 23:35:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:12,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:35:12,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:12,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:35:12,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:35:12,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:35:12,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 969 transitions, 18770 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:35:12,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:12,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:35:12,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:15,917 INFO L124 PetriNetUnfolderBase]: 5535/8341 cut-off events. [2024-06-27 23:35:15,917 INFO L125 PetriNetUnfolderBase]: For 1125178/1125181 co-relation queries the response was YES. [2024-06-27 23:35:16,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86703 conditions, 8341 events. 5535/8341 cut-off events. For 1125178/1125181 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 48194 event pairs, 1684 based on Foata normal form. 2/8339 useless extension candidates. Maximal degree in co-relation 86494. Up to 8195 conditions per place. [2024-06-27 23:35:16,048 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 937 selfloop transitions, 42 changer transitions 0/982 dead transitions. [2024-06-27 23:35:16,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 982 transitions, 20822 flow [2024-06-27 23:35:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:35:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:35:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-27 23:35:16,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36314363143631434 [2024-06-27 23:35:16,050 INFO L175 Difference]: Start difference. First operand has 463 places, 969 transitions, 18770 flow. Second operand 9 states and 134 transitions. [2024-06-27 23:35:16,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 982 transitions, 20822 flow [2024-06-27 23:35:20,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 982 transitions, 20687 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 23:35:20,039 INFO L231 Difference]: Finished difference. Result has 465 places, 971 transitions, 18788 flow [2024-06-27 23:35:20,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18635, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18788, PETRI_PLACES=465, PETRI_TRANSITIONS=971} [2024-06-27 23:35:20,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-27 23:35:20,040 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 971 transitions, 18788 flow [2024-06-27 23:35:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 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) [2024-06-27 23:35:20,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:20,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:35:20,040 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:20,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -998083304, now seen corresponding path program 1 times [2024-06-27 23:35:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650399641] [2024-06-27 23:35:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:20,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650399641] [2024-06-27 23:35:22,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650399641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:22,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:22,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:22,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353131391] [2024-06-27 23:35:22,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:22,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:22,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:22,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:22,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:35:22,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 971 transitions, 18788 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:22,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:22,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:35:22,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:24,915 INFO L124 PetriNetUnfolderBase]: 5581/8387 cut-off events. [2024-06-27 23:35:24,916 INFO L125 PetriNetUnfolderBase]: For 1146022/1146061 co-relation queries the response was YES. [2024-06-27 23:35:25,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87594 conditions, 8387 events. 5581/8387 cut-off events. For 1146022/1146061 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 48175 event pairs, 832 based on Foata normal form. 27/8411 useless extension candidates. Maximal degree in co-relation 87384. Up to 7686 conditions per place. [2024-06-27 23:35:25,092 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 828 selfloop transitions, 187 changer transitions 0/1018 dead transitions. [2024-06-27 23:35:25,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1018 transitions, 21882 flow [2024-06-27 23:35:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 23:35:25,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-27 23:35:25,094 INFO L175 Difference]: Start difference. First operand has 465 places, 971 transitions, 18788 flow. Second operand 8 states and 149 transitions. [2024-06-27 23:35:25,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1018 transitions, 21882 flow [2024-06-27 23:35:29,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1018 transitions, 21745 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:35:29,954 INFO L231 Difference]: Finished difference. Result has 468 places, 987 transitions, 19412 flow [2024-06-27 23:35:29,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=18651, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19412, PETRI_PLACES=468, PETRI_TRANSITIONS=987} [2024-06-27 23:35:29,954 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-27 23:35:29,955 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 987 transitions, 19412 flow [2024-06-27 23:35:29,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:29,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:29,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:35:29,955 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:29,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 121212312, now seen corresponding path program 2 times [2024-06-27 23:35:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:29,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749588380] [2024-06-27 23:35:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:31,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:31,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749588380] [2024-06-27 23:35:31,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749588380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164008299] [2024-06-27 23:35:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:31,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:35:31,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 987 transitions, 19412 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:31,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:31,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:35:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:34,462 INFO L124 PetriNetUnfolderBase]: 5578/8386 cut-off events. [2024-06-27 23:35:34,462 INFO L125 PetriNetUnfolderBase]: For 1164520/1164559 co-relation queries the response was YES. [2024-06-27 23:35:34,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88663 conditions, 8386 events. 5578/8386 cut-off events. For 1164520/1164559 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 48198 event pairs, 827 based on Foata normal form. 27/8410 useless extension candidates. Maximal degree in co-relation 88450. Up to 7683 conditions per place. [2024-06-27 23:35:34,624 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 825 selfloop transitions, 188 changer transitions 0/1016 dead transitions. [2024-06-27 23:35:34,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1016 transitions, 22109 flow [2024-06-27 23:35:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:35:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:35:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 23:35:34,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-27 23:35:34,626 INFO L175 Difference]: Start difference. First operand has 468 places, 987 transitions, 19412 flow. Second operand 7 states and 136 transitions. [2024-06-27 23:35:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1016 transitions, 22109 flow [2024-06-27 23:35:39,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1016 transitions, 22041 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-27 23:35:39,419 INFO L231 Difference]: Finished difference. Result has 474 places, 991 transitions, 19860 flow [2024-06-27 23:35:39,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19352, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19860, PETRI_PLACES=474, PETRI_TRANSITIONS=991} [2024-06-27 23:35:39,419 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-27 23:35:39,419 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 991 transitions, 19860 flow [2024-06-27 23:35:39,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:39,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:39,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:39,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:35:39,420 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:39,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash -373281553, now seen corresponding path program 1 times [2024-06-27 23:35:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:39,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461757714] [2024-06-27 23:35:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:41,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461757714] [2024-06-27 23:35:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461757714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:41,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:35:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873030966] [2024-06-27 23:35:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:35:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:35:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:35:41,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:35:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 991 transitions, 19860 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:41,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:35:41,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:44,414 INFO L124 PetriNetUnfolderBase]: 5687/8559 cut-off events. [2024-06-27 23:35:44,415 INFO L125 PetriNetUnfolderBase]: For 1231672/1231708 co-relation queries the response was YES. [2024-06-27 23:35:44,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91120 conditions, 8559 events. 5687/8559 cut-off events. For 1231672/1231708 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 49616 event pairs, 963 based on Foata normal form. 28/8584 useless extension candidates. Maximal degree in co-relation 90905. Up to 7332 conditions per place. [2024-06-27 23:35:44,583 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 753 selfloop transitions, 286 changer transitions 0/1042 dead transitions. [2024-06-27 23:35:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1042 transitions, 22734 flow [2024-06-27 23:35:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:35:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:35:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 23:35:44,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-27 23:35:44,584 INFO L175 Difference]: Start difference. First operand has 474 places, 991 transitions, 19860 flow. Second operand 9 states and 177 transitions. [2024-06-27 23:35:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1042 transitions, 22734 flow [2024-06-27 23:35:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1042 transitions, 22580 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 23:35:49,214 INFO L231 Difference]: Finished difference. Result has 483 places, 1005 transitions, 20550 flow [2024-06-27 23:35:49,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=19706, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20550, PETRI_PLACES=483, PETRI_TRANSITIONS=1005} [2024-06-27 23:35:49,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 441 predicate places. [2024-06-27 23:35:49,215 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1005 transitions, 20550 flow [2024-06-27 23:35:49,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:49,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:49,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:35:49,215 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1834387817, now seen corresponding path program 2 times [2024-06-27 23:35:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183912654] [2024-06-27 23:35:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183912654] [2024-06-27 23:35:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183912654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:51,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:35:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132066990] [2024-06-27 23:35:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:35:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:35:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:35:51,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 23:35:51,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1005 transitions, 20550 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:51,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:51,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 23:35:51,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:54,150 INFO L124 PetriNetUnfolderBase]: 5113/7972 cut-off events. [2024-06-27 23:35:54,150 INFO L125 PetriNetUnfolderBase]: For 1282628/1282749 co-relation queries the response was YES. [2024-06-27 23:35:54,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87946 conditions, 7972 events. 5113/7972 cut-off events. For 1282628/1282749 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 48668 event pairs, 552 based on Foata normal form. 97/8031 useless extension candidates. Maximal degree in co-relation 87728. Up to 5352 conditions per place. [2024-06-27 23:35:54,295 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 611 selfloop transitions, 300 changer transitions 0/1048 dead transitions. [2024-06-27 23:35:54,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1048 transitions, 23158 flow [2024-06-27 23:35:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:35:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:35:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-27 23:35:54,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067750677506775 [2024-06-27 23:35:54,296 INFO L175 Difference]: Start difference. First operand has 483 places, 1005 transitions, 20550 flow. Second operand 9 states and 187 transitions. [2024-06-27 23:35:54,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1048 transitions, 23158 flow [2024-06-27 23:35:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1048 transitions, 22801 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-27 23:35:58,867 INFO L231 Difference]: Finished difference. Result has 489 places, 1013 transitions, 21026 flow [2024-06-27 23:35:58,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=20193, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21026, PETRI_PLACES=489, PETRI_TRANSITIONS=1013} [2024-06-27 23:35:58,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-27 23:35:58,868 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 1013 transitions, 21026 flow [2024-06-27 23:35:58,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:58,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:58,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:58,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:35:58,868 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:35:58,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash -365862602, now seen corresponding path program 1 times [2024-06-27 23:35:58,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:58,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076601663] [2024-06-27 23:35:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:58,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076601663] [2024-06-27 23:36:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076601663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:36:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104099765] [2024-06-27 23:36:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:36:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:36:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:36:01,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-27 23:36:01,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1013 transitions, 21026 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:01,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:01,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-27 23:36:01,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:04,910 INFO L124 PetriNetUnfolderBase]: 5726/8623 cut-off events. [2024-06-27 23:36:04,911 INFO L125 PetriNetUnfolderBase]: For 1276752/1276772 co-relation queries the response was YES. [2024-06-27 23:36:05,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93885 conditions, 8623 events. 5726/8623 cut-off events. For 1276752/1276772 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 50116 event pairs, 1079 based on Foata normal form. 20/8640 useless extension candidates. Maximal degree in co-relation 93664. Up to 7673 conditions per place. [2024-06-27 23:36:05,077 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 748 selfloop transitions, 299 changer transitions 0/1050 dead transitions. [2024-06-27 23:36:05,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1050 transitions, 23354 flow [2024-06-27 23:36:05,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:36:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:36:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 23:36:05,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43015521064301554 [2024-06-27 23:36:05,078 INFO L175 Difference]: Start difference. First operand has 489 places, 1013 transitions, 21026 flow. Second operand 11 states and 194 transitions. [2024-06-27 23:36:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1050 transitions, 23354 flow [2024-06-27 23:36:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1050 transitions, 23166 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 23:36:10,590 INFO L231 Difference]: Finished difference. Result has 494 places, 1017 transitions, 21550 flow [2024-06-27 23:36:10,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=20842, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21550, PETRI_PLACES=494, PETRI_TRANSITIONS=1017} [2024-06-27 23:36:10,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-27 23:36:10,591 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 1017 transitions, 21550 flow [2024-06-27 23:36:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:10,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:10,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:36:10,591 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:36:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1728887582, now seen corresponding path program 3 times [2024-06-27 23:36:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135827253] [2024-06-27 23:36:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:12,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:12,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135827253] [2024-06-27 23:36:12,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135827253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:12,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:12,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:12,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652259084] [2024-06-27 23:36:12,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:12,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:12,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:12,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:36:12,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1017 transitions, 21550 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:12,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:12,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:36:12,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:15,178 INFO L124 PetriNetUnfolderBase]: 5744/8652 cut-off events. [2024-06-27 23:36:15,179 INFO L125 PetriNetUnfolderBase]: For 1255605/1255632 co-relation queries the response was YES. [2024-06-27 23:36:15,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95107 conditions, 8652 events. 5744/8652 cut-off events. For 1255605/1255632 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50267 event pairs, 1089 based on Foata normal form. 20/8669 useless extension candidates. Maximal degree in co-relation 94886. Up to 7928 conditions per place. [2024-06-27 23:36:15,348 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 864 selfloop transitions, 188 changer transitions 0/1055 dead transitions. [2024-06-27 23:36:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1055 transitions, 24444 flow [2024-06-27 23:36:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:36:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:36:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 23:36:15,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49477351916376305 [2024-06-27 23:36:15,350 INFO L175 Difference]: Start difference. First operand has 494 places, 1017 transitions, 21550 flow. Second operand 7 states and 142 transitions. [2024-06-27 23:36:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1055 transitions, 24444 flow [2024-06-27 23:36:20,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1055 transitions, 23905 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 23:36:20,500 INFO L231 Difference]: Finished difference. Result has 497 places, 1028 transitions, 21669 flow [2024-06-27 23:36:20,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21011, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21669, PETRI_PLACES=497, PETRI_TRANSITIONS=1028} [2024-06-27 23:36:20,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-27 23:36:20,501 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1028 transitions, 21669 flow [2024-06-27 23:36:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:20,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:20,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:36:20,502 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:36:20,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1728680192, now seen corresponding path program 4 times [2024-06-27 23:36:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994769745] [2024-06-27 23:36:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:20,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:22,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:22,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994769745] [2024-06-27 23:36:22,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994769745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:22,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:22,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:22,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344055829] [2024-06-27 23:36:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:22,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:22,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:22,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:22,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:36:22,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1028 transitions, 21669 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:22,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:22,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:36:22,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:25,351 INFO L124 PetriNetUnfolderBase]: 5757/8670 cut-off events. [2024-06-27 23:36:25,352 INFO L125 PetriNetUnfolderBase]: For 1274663/1274690 co-relation queries the response was YES. [2024-06-27 23:36:25,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95261 conditions, 8670 events. 5757/8670 cut-off events. For 1274663/1274690 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 50406 event pairs, 1089 based on Foata normal form. 19/8686 useless extension candidates. Maximal degree in co-relation 95039. Up to 7943 conditions per place. [2024-06-27 23:36:25,528 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 862 selfloop transitions, 192 changer transitions 0/1057 dead transitions. [2024-06-27 23:36:25,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1057 transitions, 24457 flow [2024-06-27 23:36:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:36:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:36:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-27 23:36:25,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843205574912892 [2024-06-27 23:36:25,530 INFO L175 Difference]: Start difference. First operand has 497 places, 1028 transitions, 21669 flow. Second operand 7 states and 139 transitions. [2024-06-27 23:36:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1057 transitions, 24457 flow [2024-06-27 23:36:30,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1057 transitions, 24029 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 23:36:30,582 INFO L231 Difference]: Finished difference. Result has 502 places, 1035 transitions, 21877 flow [2024-06-27 23:36:30,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21269, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1028, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21877, PETRI_PLACES=502, PETRI_TRANSITIONS=1035} [2024-06-27 23:36:30,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-27 23:36:30,583 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1035 transitions, 21877 flow [2024-06-27 23:36:30,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:30,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:30,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:30,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:36:30,584 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:36:30,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2145719032, now seen corresponding path program 5 times [2024-06-27 23:36:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579007158] [2024-06-27 23:36:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:30,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579007158] [2024-06-27 23:36:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579007158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:32,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:32,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:32,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762913898] [2024-06-27 23:36:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:32,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:32,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:36:32,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1035 transitions, 21877 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:32,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:32,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:36:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:35,179 INFO L124 PetriNetUnfolderBase]: 5751/8656 cut-off events. [2024-06-27 23:36:35,180 INFO L125 PetriNetUnfolderBase]: For 1290996/1291023 co-relation queries the response was YES. [2024-06-27 23:36:35,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95304 conditions, 8656 events. 5751/8656 cut-off events. For 1290996/1291023 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50322 event pairs, 1131 based on Foata normal form. 20/8673 useless extension candidates. Maximal degree in co-relation 95080. Up to 8174 conditions per place. [2024-06-27 23:36:35,628 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 900 selfloop transitions, 155 changer transitions 0/1058 dead transitions. [2024-06-27 23:36:35,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1058 transitions, 24333 flow [2024-06-27 23:36:35,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:36:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:36:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 23:36:35,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-27 23:36:35,630 INFO L175 Difference]: Start difference. First operand has 502 places, 1035 transitions, 21877 flow. Second operand 7 states and 138 transitions. [2024-06-27 23:36:35,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1058 transitions, 24333 flow [2024-06-27 23:36:40,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1058 transitions, 24011 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 23:36:40,058 INFO L231 Difference]: Finished difference. Result has 506 places, 1035 transitions, 21875 flow [2024-06-27 23:36:40,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21555, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21875, PETRI_PLACES=506, PETRI_TRANSITIONS=1035} [2024-06-27 23:36:40,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-27 23:36:40,059 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 1035 transitions, 21875 flow [2024-06-27 23:36:40,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:40,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:40,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:36:40,059 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:36:40,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 239234020, now seen corresponding path program 6 times [2024-06-27 23:36:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106080780] [2024-06-27 23:36:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:41,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:41,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106080780] [2024-06-27 23:36:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106080780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:41,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375216971] [2024-06-27 23:36:41,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:41,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:41,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:36:41,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1035 transitions, 21875 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:41,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:41,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:36:41,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:44,692 INFO L124 PetriNetUnfolderBase]: 5756/8663 cut-off events. [2024-06-27 23:36:44,693 INFO L125 PetriNetUnfolderBase]: For 1304301/1304328 co-relation queries the response was YES. [2024-06-27 23:36:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95521 conditions, 8663 events. 5756/8663 cut-off events. For 1304301/1304328 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 50344 event pairs, 1130 based on Foata normal form. 19/8679 useless extension candidates. Maximal degree in co-relation 95296. Up to 8218 conditions per place. [2024-06-27 23:36:44,883 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 906 selfloop transitions, 148 changer transitions 0/1057 dead transitions. [2024-06-27 23:36:44,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 1057 transitions, 24168 flow [2024-06-27 23:36:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:36:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:36:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 23:36:44,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-27 23:36:44,885 INFO L175 Difference]: Start difference. First operand has 506 places, 1035 transitions, 21875 flow. Second operand 7 states and 134 transitions. [2024-06-27 23:36:44,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 1057 transitions, 24168 flow [2024-06-27 23:36:51,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 1057 transitions, 23878 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 23:36:51,144 INFO L231 Difference]: Finished difference. Result has 509 places, 1038 transitions, 21975 flow [2024-06-27 23:36:51,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21601, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1035, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21975, PETRI_PLACES=509, PETRI_TRANSITIONS=1038} [2024-06-27 23:36:51,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-27 23:36:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 1038 transitions, 21975 flow [2024-06-27 23:36:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:51,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:51,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:36:51,145 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:36:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 744274240, now seen corresponding path program 7 times [2024-06-27 23:36:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952810207] [2024-06-27 23:36:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952810207] [2024-06-27 23:36:52,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952810207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:52,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464801752] [2024-06-27 23:36:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:52,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:53,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:36:53,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1038 transitions, 21975 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:36:53,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:53,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:36:53,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:56,073 INFO L124 PetriNetUnfolderBase]: 5769/8680 cut-off events. [2024-06-27 23:36:56,073 INFO L125 PetriNetUnfolderBase]: For 1330571/1330598 co-relation queries the response was YES. [2024-06-27 23:36:56,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95955 conditions, 8680 events. 5769/8680 cut-off events. For 1330571/1330598 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 50419 event pairs, 1101 based on Foata normal form. 19/8696 useless extension candidates. Maximal degree in co-relation 95729. Up to 8183 conditions per place. [2024-06-27 23:36:56,225 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 912 selfloop transitions, 145 changer transitions 0/1060 dead transitions. [2024-06-27 23:36:56,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 1060 transitions, 24506 flow [2024-06-27 23:36:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:36:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:36:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 23:36:56,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45993031358885017 [2024-06-27 23:36:56,226 INFO L175 Difference]: Start difference. First operand has 509 places, 1038 transitions, 21975 flow. Second operand 7 states and 132 transitions. [2024-06-27 23:36:56,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 1060 transitions, 24506 flow [2024-06-27 23:37:01,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1060 transitions, 24151 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:01,411 INFO L231 Difference]: Finished difference. Result has 512 places, 1044 transitions, 22098 flow [2024-06-27 23:37:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21620, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=893, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22098, PETRI_PLACES=512, PETRI_TRANSITIONS=1044} [2024-06-27 23:37:01,411 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 470 predicate places. [2024-06-27 23:37:01,412 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 1044 transitions, 22098 flow [2024-06-27 23:37:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:37:01,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:01,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:37:01,412 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:37:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1470302012, now seen corresponding path program 8 times [2024-06-27 23:37:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507759918] [2024-06-27 23:37:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:01,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507759918] [2024-06-27 23:37:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507759918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864766883] [2024-06-27 23:37:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:03,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:03,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:37:03,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 1044 transitions, 22098 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:37:03,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:03,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:37:03,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:06,172 INFO L124 PetriNetUnfolderBase]: 5766/8676 cut-off events. [2024-06-27 23:37:06,173 INFO L125 PetriNetUnfolderBase]: For 1344630/1344657 co-relation queries the response was YES. [2024-06-27 23:37:06,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96004 conditions, 8676 events. 5766/8676 cut-off events. For 1344630/1344657 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 50352 event pairs, 1101 based on Foata normal form. 19/8692 useless extension candidates. Maximal degree in co-relation 95776. Up to 8234 conditions per place. [2024-06-27 23:37:06,360 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 914 selfloop transitions, 142 changer transitions 0/1059 dead transitions. [2024-06-27 23:37:06,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1059 transitions, 24268 flow [2024-06-27 23:37:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 23:37:06,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 23:37:06,361 INFO L175 Difference]: Start difference. First operand has 512 places, 1044 transitions, 22098 flow. Second operand 8 states and 140 transitions. [2024-06-27 23:37:06,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1059 transitions, 24268 flow [2024-06-27 23:37:13,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 1059 transitions, 23977 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:13,115 INFO L231 Difference]: Finished difference. Result has 516 places, 1044 transitions, 22099 flow [2024-06-27 23:37:13,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21807, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=902, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22099, PETRI_PLACES=516, PETRI_TRANSITIONS=1044} [2024-06-27 23:37:13,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-27 23:37:13,116 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1044 transitions, 22099 flow [2024-06-27 23:37:13,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2024-06-27 23:37:13,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:13,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:13,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:37:13,116 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:37:13,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1736091207, now seen corresponding path program 3 times [2024-06-27 23:37:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:13,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013212973] [2024-06-27 23:37:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:15,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:15,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013212973] [2024-06-27 23:37:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013212973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:15,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:15,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:37:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545104527] [2024-06-27 23:37:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:15,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:37:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:37:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:37:15,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:37:15,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1044 transitions, 22099 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:15,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:15,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:37:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:18,426 INFO L124 PetriNetUnfolderBase]: 5782/8695 cut-off events. [2024-06-27 23:37:18,426 INFO L125 PetriNetUnfolderBase]: For 1388048/1388082 co-relation queries the response was YES. [2024-06-27 23:37:18,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96406 conditions, 8695 events. 5782/8695 cut-off events. For 1388048/1388082 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 50294 event pairs, 869 based on Foata normal form. 28/8720 useless extension candidates. Maximal degree in co-relation 96176. Up to 7161 conditions per place. [2024-06-27 23:37:18,605 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 734 selfloop transitions, 345 changer transitions 0/1082 dead transitions. [2024-06-27 23:37:18,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1082 transitions, 24703 flow [2024-06-27 23:37:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 23:37:18,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-27 23:37:18,606 INFO L175 Difference]: Start difference. First operand has 516 places, 1044 transitions, 22099 flow. Second operand 9 states and 183 transitions. [2024-06-27 23:37:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1082 transitions, 24703 flow [2024-06-27 23:37:25,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1082 transitions, 24461 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:25,331 INFO L231 Difference]: Finished difference. Result has 519 places, 1047 transitions, 22640 flow [2024-06-27 23:37:25,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21857, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=702, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22640, PETRI_PLACES=519, PETRI_TRANSITIONS=1047} [2024-06-27 23:37:25,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-27 23:37:25,332 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1047 transitions, 22640 flow [2024-06-27 23:37:25,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:25,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:25,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:25,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:37:25,333 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:37:25,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1728681897, now seen corresponding path program 4 times [2024-06-27 23:37:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:25,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83988529] [2024-06-27 23:37:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:27,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:27,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83988529] [2024-06-27 23:37:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83988529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:27,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:37:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447646659] [2024-06-27 23:37:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:27,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:37:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:37:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:37:27,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:37:27,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1047 transitions, 22640 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:27,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:27,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:37:27,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:30,616 INFO L124 PetriNetUnfolderBase]: 5840/8789 cut-off events. [2024-06-27 23:37:30,616 INFO L125 PetriNetUnfolderBase]: For 1442250/1442266 co-relation queries the response was YES. [2024-06-27 23:37:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98793 conditions, 8789 events. 5840/8789 cut-off events. For 1442250/1442266 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 51139 event pairs, 1071 based on Foata normal form. 16/8802 useless extension candidates. Maximal degree in co-relation 98563. Up to 7739 conditions per place. [2024-06-27 23:37:30,830 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 770 selfloop transitions, 314 changer transitions 0/1087 dead transitions. [2024-06-27 23:37:30,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 1087 transitions, 25356 flow [2024-06-27 23:37:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-27 23:37:30,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-27 23:37:30,831 INFO L175 Difference]: Start difference. First operand has 519 places, 1047 transitions, 22640 flow. Second operand 9 states and 180 transitions. [2024-06-27 23:37:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 1087 transitions, 25356 flow [2024-06-27 23:37:36,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1087 transitions, 24560 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:36,518 INFO L231 Difference]: Finished difference. Result has 522 places, 1056 transitions, 22687 flow [2024-06-27 23:37:36,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21917, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22687, PETRI_PLACES=522, PETRI_TRANSITIONS=1056} [2024-06-27 23:37:36,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-27 23:37:36,519 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 1056 transitions, 22687 flow [2024-06-27 23:37:36,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:36,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:36,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:36,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:37:36,520 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:37:36,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:36,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1728672256, now seen corresponding path program 2 times [2024-06-27 23:37:36,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:36,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321252456] [2024-06-27 23:37:36,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:36,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:38,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:38,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321252456] [2024-06-27 23:37:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321252456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:38,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:37:38,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817615938] [2024-06-27 23:37:38,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:38,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:37:38,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:38,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:37:38,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:37:39,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:37:39,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 1056 transitions, 22687 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:39,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:39,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:37:39,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:42,669 INFO L124 PetriNetUnfolderBase]: 5881/8846 cut-off events. [2024-06-27 23:37:42,669 INFO L125 PetriNetUnfolderBase]: For 1476346/1476362 co-relation queries the response was YES. [2024-06-27 23:37:42,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99205 conditions, 8846 events. 5881/8846 cut-off events. For 1476346/1476362 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 51530 event pairs, 1095 based on Foata normal form. 16/8859 useless extension candidates. Maximal degree in co-relation 98974. Up to 7197 conditions per place. [2024-06-27 23:37:42,827 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 694 selfloop transitions, 405 changer transitions 0/1102 dead transitions. [2024-06-27 23:37:42,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1102 transitions, 25615 flow [2024-06-27 23:37:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:37:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:37:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:37:42,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47804878048780486 [2024-06-27 23:37:42,829 INFO L175 Difference]: Start difference. First operand has 522 places, 1056 transitions, 22687 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:37:42,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1102 transitions, 25615 flow [2024-06-27 23:37:48,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 1102 transitions, 25194 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:48,442 INFO L231 Difference]: Finished difference. Result has 528 places, 1070 transitions, 23607 flow [2024-06-27 23:37:48,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=22266, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23607, PETRI_PLACES=528, PETRI_TRANSITIONS=1070} [2024-06-27 23:37:48,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-27 23:37:48,443 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 1070 transitions, 23607 flow [2024-06-27 23:37:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:48,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:48,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:37:48,443 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:37:48,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1728672597, now seen corresponding path program 5 times [2024-06-27 23:37:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:48,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230125464] [2024-06-27 23:37:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:50,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230125464] [2024-06-27 23:37:50,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230125464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:50,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:50,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:37:50,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049211082] [2024-06-27 23:37:50,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:37:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:37:50,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:37:50,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:37:50,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 1070 transitions, 23607 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:50,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:50,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:37:50,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:54,364 INFO L124 PetriNetUnfolderBase]: 5871/8832 cut-off events. [2024-06-27 23:37:54,365 INFO L125 PetriNetUnfolderBase]: For 1480299/1480315 co-relation queries the response was YES. [2024-06-27 23:37:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100989 conditions, 8832 events. 5871/8832 cut-off events. For 1480299/1480315 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 51423 event pairs, 1098 based on Foata normal form. 16/8845 useless extension candidates. Maximal degree in co-relation 100754. Up to 7866 conditions per place. [2024-06-27 23:37:54,528 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 793 selfloop transitions, 303 changer transitions 0/1099 dead transitions. [2024-06-27 23:37:54,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1099 transitions, 25917 flow [2024-06-27 23:37:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 23:37:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-27 23:37:54,529 INFO L175 Difference]: Start difference. First operand has 528 places, 1070 transitions, 23607 flow. Second operand 9 states and 177 transitions. [2024-06-27 23:37:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1099 transitions, 25917 flow [2024-06-27 23:38:00,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 1099 transitions, 25592 flow, removed 118 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:00,840 INFO L231 Difference]: Finished difference. Result has 533 places, 1070 transitions, 23900 flow [2024-06-27 23:38:00,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=23282, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23900, PETRI_PLACES=533, PETRI_TRANSITIONS=1070} [2024-06-27 23:38:00,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 491 predicate places. [2024-06-27 23:38:00,841 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 1070 transitions, 23900 flow [2024-06-27 23:38:00,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:00,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:00,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:00,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:38:00,843 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:00,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 744599306, now seen corresponding path program 3 times [2024-06-27 23:38:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023516760] [2024-06-27 23:38:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:03,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023516760] [2024-06-27 23:38:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023516760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:03,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:03,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:38:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835268588] [2024-06-27 23:38:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:38:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:38:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:38:03,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:38:03,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1070 transitions, 23900 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:03,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:03,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:38:03,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:07,101 INFO L124 PetriNetUnfolderBase]: 5923/8902 cut-off events. [2024-06-27 23:38:07,102 INFO L125 PetriNetUnfolderBase]: For 1527491/1527507 co-relation queries the response was YES. [2024-06-27 23:38:07,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102310 conditions, 8902 events. 5923/8902 cut-off events. For 1527491/1527507 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 51858 event pairs, 1109 based on Foata normal form. 16/8915 useless extension candidates. Maximal degree in co-relation 102074. Up to 7679 conditions per place. [2024-06-27 23:38:07,280 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 794 selfloop transitions, 310 changer transitions 0/1107 dead transitions. [2024-06-27 23:38:07,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 1107 transitions, 26689 flow [2024-06-27 23:38:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:07,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 23:38:07,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 23:38:07,282 INFO L175 Difference]: Start difference. First operand has 533 places, 1070 transitions, 23900 flow. Second operand 10 states and 190 transitions. [2024-06-27 23:38:07,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 1107 transitions, 26689 flow [2024-06-27 23:38:13,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1107 transitions, 26066 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:13,654 INFO L231 Difference]: Finished difference. Result has 536 places, 1079 transitions, 24166 flow [2024-06-27 23:38:13,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=23277, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=761, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24166, PETRI_PLACES=536, PETRI_TRANSITIONS=1079} [2024-06-27 23:38:13,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 494 predicate places. [2024-06-27 23:38:13,655 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1079 transitions, 24166 flow [2024-06-27 23:38:13,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:13,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:13,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:13,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:38:13,656 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:13,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1470384627, now seen corresponding path program 6 times [2024-06-27 23:38:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967338432] [2024-06-27 23:38:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967338432] [2024-06-27 23:38:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967338432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:15,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:15,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:38:15,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467237849] [2024-06-27 23:38:15,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:38:15,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:38:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:38:16,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:38:16,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1079 transitions, 24166 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:16,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:16,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:38:16,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:19,933 INFO L124 PetriNetUnfolderBase]: 5939/8926 cut-off events. [2024-06-27 23:38:19,933 INFO L125 PetriNetUnfolderBase]: For 1552376/1552392 co-relation queries the response was YES. [2024-06-27 23:38:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102954 conditions, 8926 events. 5939/8926 cut-off events. For 1552376/1552392 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 51994 event pairs, 1123 based on Foata normal form. 16/8939 useless extension candidates. Maximal degree in co-relation 102715. Up to 8200 conditions per place. [2024-06-27 23:38:20,115 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 883 selfloop transitions, 220 changer transitions 0/1106 dead transitions. [2024-06-27 23:38:20,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 1106 transitions, 26521 flow [2024-06-27 23:38:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 23:38:20,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 23:38:20,117 INFO L175 Difference]: Start difference. First operand has 536 places, 1079 transitions, 24166 flow. Second operand 9 states and 171 transitions. [2024-06-27 23:38:20,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 1106 transitions, 26521 flow [2024-06-27 23:38:26,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 1106 transitions, 25809 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:26,433 INFO L231 Difference]: Finished difference. Result has 539 places, 1082 transitions, 23962 flow [2024-06-27 23:38:26,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=23454, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=859, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23962, PETRI_PLACES=539, PETRI_TRANSITIONS=1082} [2024-06-27 23:38:26,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 497 predicate places. [2024-06-27 23:38:26,435 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 1082 transitions, 23962 flow [2024-06-27 23:38:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:26,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:26,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:26,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:38:26,435 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:26,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1470384286, now seen corresponding path program 4 times [2024-06-27 23:38:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132988623] [2024-06-27 23:38:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:28,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:28,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132988623] [2024-06-27 23:38:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132988623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:38:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324363770] [2024-06-27 23:38:28,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:38:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:28,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:38:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:38:28,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:38:28,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1082 transitions, 23962 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:28,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:28,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:38:28,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:32,594 INFO L124 PetriNetUnfolderBase]: 5959/8954 cut-off events. [2024-06-27 23:38:32,594 INFO L125 PetriNetUnfolderBase]: For 1571392/1571408 co-relation queries the response was YES. [2024-06-27 23:38:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102749 conditions, 8954 events. 5959/8954 cut-off events. For 1571392/1571408 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 52141 event pairs, 1113 based on Foata normal form. 16/8967 useless extension candidates. Maximal degree in co-relation 102510. Up to 7679 conditions per place. [2024-06-27 23:38:32,764 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 788 selfloop transitions, 323 changer transitions 0/1114 dead transitions. [2024-06-27 23:38:32,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1114 transitions, 26652 flow [2024-06-27 23:38:32,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 23:38:32,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682926829268293 [2024-06-27 23:38:32,765 INFO L175 Difference]: Start difference. First operand has 539 places, 1082 transitions, 23962 flow. Second operand 10 states and 192 transitions. [2024-06-27 23:38:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 1114 transitions, 26652 flow [2024-06-27 23:38:39,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 1114 transitions, 26177 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:39,193 INFO L231 Difference]: Finished difference. Result has 542 places, 1086 transitions, 24251 flow [2024-06-27 23:38:39,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=23487, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24251, PETRI_PLACES=542, PETRI_TRANSITIONS=1086} [2024-06-27 23:38:39,194 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-27 23:38:39,194 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 1086 transitions, 24251 flow [2024-06-27 23:38:39,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:39,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:39,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:39,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:38:39,194 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:39,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:39,195 INFO L85 PathProgramCache]: Analyzing trace with hash 245571195, now seen corresponding path program 7 times [2024-06-27 23:38:39,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:39,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36123899] [2024-06-27 23:38:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:39,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:41,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:41,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36123899] [2024-06-27 23:38:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36123899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:41,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:38:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090694042] [2024-06-27 23:38:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:38:41,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:41,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:38:41,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:38:41,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 23:38:41,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1086 transitions, 24251 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:41,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:41,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 23:38:41,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:45,572 INFO L124 PetriNetUnfolderBase]: 6001/9016 cut-off events. [2024-06-27 23:38:45,573 INFO L125 PetriNetUnfolderBase]: For 1627687/1627703 co-relation queries the response was YES. [2024-06-27 23:38:45,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104320 conditions, 9016 events. 6001/9016 cut-off events. For 1627687/1627703 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 52547 event pairs, 1117 based on Foata normal form. 16/9029 useless extension candidates. Maximal degree in co-relation 104079. Up to 8220 conditions per place. [2024-06-27 23:38:46,022 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 885 selfloop transitions, 230 changer transitions 0/1118 dead transitions. [2024-06-27 23:38:46,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 1118 transitions, 26941 flow [2024-06-27 23:38:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 23:38:46,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-27 23:38:46,024 INFO L175 Difference]: Start difference. First operand has 542 places, 1086 transitions, 24251 flow. Second operand 9 states and 173 transitions. [2024-06-27 23:38:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 1118 transitions, 26941 flow [2024-06-27 23:38:52,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1118 transitions, 26215 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:52,854 INFO L231 Difference]: Finished difference. Result has 543 places, 1092 transitions, 24120 flow [2024-06-27 23:38:52,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=23525, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=859, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24120, PETRI_PLACES=543, PETRI_TRANSITIONS=1092} [2024-06-27 23:38:52,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-27 23:38:52,855 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 1092 transitions, 24120 flow [2024-06-27 23:38:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:52,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:52,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:52,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:38:52,856 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:38:52,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash 245909126, now seen corresponding path program 5 times [2024-06-27 23:38:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361608517] [2024-06-27 23:38:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat