./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:16:48,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:16:48,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:16:48,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:16:48,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:16:48,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:16:48,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:16:48,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:16:48,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:16:48,194 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:16:48,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:16:48,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:16:48,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:16:48,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:16:48,196 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:16:48,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:16:48,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:16:48,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:16:48,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:16:48,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:16:48,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:16:48,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:16:48,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:16:48,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:16:48,198 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:16:48,199 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:16:48,199 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:16:48,199 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:16:48,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:16:48,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:16:48,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:16:48,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:16:48,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:16:48,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:16:48,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:16:48,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:16:48,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:16:48,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:16:48,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:16:48,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:16:48,202 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:16:48,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:16:48,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:16:48,203 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:16:48,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:16:48,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:16:48,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:16:48,408 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:16:48,408 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:16:48,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 00:16:48,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:16:48,520 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:16:48,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:16:49,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:16:49,765 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:16:49,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:16:49,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545dbbc7/3328c19ada164935aaeec3a03b383330/FLAGabb5ab4eb [2024-06-28 00:16:49,798 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545dbbc7/3328c19ada164935aaeec3a03b383330 [2024-06-28 00:16:49,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:16:49,799 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:16:49,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:16:49,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:16:49,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:16:49,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:48" (1/2) ... [2024-06-28 00:16:49,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bf4996 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:16:49, skipping insertion in model container [2024-06-28 00:16:49,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:48" (1/2) ... [2024-06-28 00:16:49,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1dd8266a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:16:49, skipping insertion in model container [2024-06-28 00:16:49,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:16:49" (2/2) ... [2024-06-28 00:16:49,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21bf4996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:49, skipping insertion in model container [2024-06-28 00:16:49,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:16:49" (2/2) ... [2024-06-28 00:16:49,810 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:16:49,831 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:16:49,832 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:16:49,832 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (2LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0) - (long long )y$w_buff1_used >= 0LL) && (2LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:16:49,833 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:16:49,833 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-28 00:16:49,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:16:50,175 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:16:50,190 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:16:50,313 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:16:50,350 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:16:50,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50 WrapperNode [2024-06-28 00:16:50,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:16:50,352 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:16:50,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:16:50,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:16:50,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,373 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,412 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-28 00:16:50,413 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:16:50,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:16:50,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:16:50,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:16:50,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,443 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:16:50,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:16:50,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:16:50,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:16:50,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:16:50,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (1/1) ... [2024-06-28 00:16:50,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:16:50,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:16:50,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:16:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:16:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:16:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:16:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:16:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:16:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:16:50,549 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:16:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:16:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:16:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:16:50,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:16:50,551 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:16:50,675 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:16:50,676 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:16:51,091 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:16:51,091 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:16:51,234 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:16:51,234 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:16:51,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:16:51 BoogieIcfgContainer [2024-06-28 00:16:51,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:16:51,238 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:16:51,238 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:16:51,241 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:16:51,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:48" (1/4) ... [2024-06-28 00:16:51,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b564 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:16:51, skipping insertion in model container [2024-06-28 00:16:51,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:16:49" (2/4) ... [2024-06-28 00:16:51,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:16:51, skipping insertion in model container [2024-06-28 00:16:51,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:50" (3/4) ... [2024-06-28 00:16:51,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:16:51, skipping insertion in model container [2024-06-28 00:16:51,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:16:51" (4/4) ... [2024-06-28 00:16:51,245 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 00:16:51,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:16:51,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 00:16:51,259 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:16:51,299 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:16:51,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:16:51,373 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 00:16:51,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:16:51,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:16:51,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 00:16:51,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 00:16:51,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:16:51,390 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;@1cce1208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:16:51,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 00:16:51,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:16:51,395 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:16:51,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:16:51,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:51,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:16:51,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:51,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:51,403 INFO L85 PathProgramCache]: Analyzing trace with hash 324002771, now seen corresponding path program 1 times [2024-06-28 00:16:51,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:51,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721014742] [2024-06-28 00:16:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:51,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:52,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:52,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721014742] [2024-06-28 00:16:52,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721014742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:52,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:52,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:16:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272436356] [2024-06-28 00:16:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:16:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:16:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:16:52,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:16:52,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:52,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:52,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:16:52,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:52,825 INFO L124 PetriNetUnfolderBase]: 135/252 cut-off events. [2024-06-28 00:16:52,825 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:16:52,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 252 events. 135/252 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 871 event pairs, 79 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 507. Up to 243 conditions per place. [2024-06-28 00:16:52,830 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-28 00:16:52,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 109 flow [2024-06-28 00:16:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:16:52,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:16:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-28 00:16:52,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-28 00:16:52,840 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 49 transitions. [2024-06-28 00:16:52,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 109 flow [2024-06-28 00:16:52,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:52,845 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 00:16:52,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 00:16:52,851 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 00:16:52,851 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 00:16:52,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:52,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:52,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:52,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:16:52,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:52,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2129050674, now seen corresponding path program 1 times [2024-06-28 00:16:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351918647] [2024-06-28 00:16:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:52,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351918647] [2024-06-28 00:16:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351918647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:53,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:16:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222802173] [2024-06-28 00:16:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:16:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:16:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:16:53,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:16:53,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:53,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:53,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:16:53,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:53,725 INFO L124 PetriNetUnfolderBase]: 132/247 cut-off events. [2024-06-28 00:16:53,725 INFO L125 PetriNetUnfolderBase]: For 50/53 co-relation queries the response was YES. [2024-06-28 00:16:53,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 247 events. 132/247 cut-off events. For 50/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 840 event pairs, 64 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 569. Up to 229 conditions per place. [2024-06-28 00:16:53,727 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 24 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-28 00:16:53,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 151 flow [2024-06-28 00:16:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:16:53,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:16:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-06-28 00:16:53,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431034482758621 [2024-06-28 00:16:53,729 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 63 transitions. [2024-06-28 00:16:53,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 151 flow [2024-06-28 00:16:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:16:53,730 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-28 00:16:53,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-28 00:16:53,731 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-28 00:16:53,731 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-28 00:16:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:53,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:53,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:53,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:16:53,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:53,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1576062548, now seen corresponding path program 1 times [2024-06-28 00:16:53,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007472481] [2024-06-28 00:16:53,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:53,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007472481] [2024-06-28 00:16:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007472481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:16:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995634221] [2024-06-28 00:16:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:54,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:16:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:16:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:16:54,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:16:54,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:54,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:54,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:16:54,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:54,570 INFO L124 PetriNetUnfolderBase]: 152/280 cut-off events. [2024-06-28 00:16:54,571 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-06-28 00:16:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 280 events. 152/280 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 948 event pairs, 59 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 718. Up to 254 conditions per place. [2024-06-28 00:16:54,573 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-28 00:16:54,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2024-06-28 00:16:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:16:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:16:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2024-06-28 00:16:54,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-06-28 00:16:54,575 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 73 transitions. [2024-06-28 00:16:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2024-06-28 00:16:54,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:54,576 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 135 flow [2024-06-28 00:16:54,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-06-28 00:16:54,577 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-28 00:16:54,577 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 135 flow [2024-06-28 00:16:54,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:54,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:54,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:54,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:16:54,578 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:54,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2099849209, now seen corresponding path program 1 times [2024-06-28 00:16:54,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:54,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154354179] [2024-06-28 00:16:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:54,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:55,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154354179] [2024-06-28 00:16:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154354179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:55,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:55,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:16:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369695823] [2024-06-28 00:16:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:16:55,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:16:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:16:55,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:16:55,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 135 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:55,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:55,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:16:55,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:55,722 INFO L124 PetriNetUnfolderBase]: 149/275 cut-off events. [2024-06-28 00:16:55,722 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-06-28 00:16:55,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 275 events. 149/275 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 920 event pairs, 41 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 792. Up to 240 conditions per place. [2024-06-28 00:16:55,725 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 37 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-28 00:16:55,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 273 flow [2024-06-28 00:16:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:16:55,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:16:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-28 00:16:55,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-06-28 00:16:55,729 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 135 flow. Second operand 6 states and 86 transitions. [2024-06-28 00:16:55,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 273 flow [2024-06-28 00:16:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:16:55,733 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 170 flow [2024-06-28 00:16:55,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-06-28 00:16:55,734 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 15 predicate places. [2024-06-28 00:16:55,734 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 170 flow [2024-06-28 00:16:55,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:55,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:55,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:16:55,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:55,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1527310829, now seen corresponding path program 1 times [2024-06-28 00:16:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514256057] [2024-06-28 00:16:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:56,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:56,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514256057] [2024-06-28 00:16:56,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514256057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:56,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:56,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:56,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209973004] [2024-06-28 00:16:56,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:56,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:56,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:56,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:56,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 00:16:56,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:56,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:56,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 00:16:56,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:56,952 INFO L124 PetriNetUnfolderBase]: 145/267 cut-off events. [2024-06-28 00:16:56,952 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-06-28 00:16:56,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 267 events. 145/267 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 874 event pairs, 22 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 844. Up to 214 conditions per place. [2024-06-28 00:16:56,954 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 37 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-28 00:16:56,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 298 flow [2024-06-28 00:16:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:16:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:16:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-28 00:16:56,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630541871921182 [2024-06-28 00:16:56,956 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 170 flow. Second operand 7 states and 94 transitions. [2024-06-28 00:16:56,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 298 flow [2024-06-28 00:16:56,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 281 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:16:56,960 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 167 flow [2024-06-28 00:16:56,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-06-28 00:16:56,962 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-28 00:16:56,964 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 167 flow [2024-06-28 00:16:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:56,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:56,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:16:56,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:56,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1307057581, now seen corresponding path program 1 times [2024-06-28 00:16:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:56,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47124162] [2024-06-28 00:16:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47124162] [2024-06-28 00:16:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47124162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:16:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629826991] [2024-06-28 00:16:58,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:16:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:16:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:16:58,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:16:58,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:58,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:58,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:16:58,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:58,445 INFO L124 PetriNetUnfolderBase]: 141/261 cut-off events. [2024-06-28 00:16:58,445 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-06-28 00:16:58,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 261 events. 141/261 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 853 event pairs, 36 based on Foata normal form. 2/262 useless extension candidates. Maximal degree in co-relation 859. Up to 244 conditions per place. [2024-06-28 00:16:58,447 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 9 changer transitions 0/41 dead transitions. [2024-06-28 00:16:58,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 277 flow [2024-06-28 00:16:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:16:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:16:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-06-28 00:16:58,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2024-06-28 00:16:58,448 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 167 flow. Second operand 5 states and 56 transitions. [2024-06-28 00:16:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 277 flow [2024-06-28 00:16:58,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 248 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:16:58,450 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 192 flow [2024-06-28 00:16:58,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-06-28 00:16:58,451 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-28 00:16:58,451 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 192 flow [2024-06-28 00:16:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:58,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:58,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:58,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:16:58,452 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:58,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362180, now seen corresponding path program 1 times [2024-06-28 00:16:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:58,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951553531] [2024-06-28 00:16:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:58,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:59,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951553531] [2024-06-28 00:16:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951553531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:59,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305700599] [2024-06-28 00:16:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:59,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:59,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:16:59,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:59,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:59,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:16:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:59,500 INFO L124 PetriNetUnfolderBase]: 160/295 cut-off events. [2024-06-28 00:16:59,500 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2024-06-28 00:16:59,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 295 events. 160/295 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 987 event pairs, 40 based on Foata normal form. 1/295 useless extension candidates. Maximal degree in co-relation 1006. Up to 260 conditions per place. [2024-06-28 00:16:59,502 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 37 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2024-06-28 00:16:59,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 386 flow [2024-06-28 00:16:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:16:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:16:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 00:16:59,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2024-06-28 00:16:59,503 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 192 flow. Second operand 7 states and 76 transitions. [2024-06-28 00:16:59,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 386 flow [2024-06-28 00:16:59,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:59,505 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 291 flow [2024-06-28 00:16:59,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-28 00:16:59,506 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-28 00:16:59,506 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 291 flow [2024-06-28 00:16:59,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:59,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:59,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:59,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:16:59,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:16:59,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:59,507 INFO L85 PathProgramCache]: Analyzing trace with hash -800303024, now seen corresponding path program 2 times [2024-06-28 00:16:59,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:59,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938333516] [2024-06-28 00:16:59,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:59,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:00,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:00,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938333516] [2024-06-28 00:17:00,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938333516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:00,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:00,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:00,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22245991] [2024-06-28 00:17:00,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:00,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:00,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:00,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:00,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:00,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:00,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:00,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:00,739 INFO L124 PetriNetUnfolderBase]: 166/305 cut-off events. [2024-06-28 00:17:00,739 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2024-06-28 00:17:00,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 305 events. 166/305 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1040 event pairs, 40 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 1165. Up to 278 conditions per place. [2024-06-28 00:17:00,741 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 40 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2024-06-28 00:17:00,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 456 flow [2024-06-28 00:17:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 00:17:00,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-28 00:17:00,744 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 291 flow. Second operand 7 states and 73 transitions. [2024-06-28 00:17:00,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 456 flow [2024-06-28 00:17:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 441 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:17:00,748 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 360 flow [2024-06-28 00:17:00,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-28 00:17:00,750 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-28 00:17:00,750 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 360 flow [2024-06-28 00:17:00,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:00,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:00,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:00,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:17:00,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:00,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash -800302838, now seen corresponding path program 1 times [2024-06-28 00:17:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:00,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994838816] [2024-06-28 00:17:00,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:01,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:01,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994838816] [2024-06-28 00:17:01,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994838816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:01,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:01,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:01,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187297649] [2024-06-28 00:17:01,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:01,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:01,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:01,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:01,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 360 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:01,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:01,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:01,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:01,785 INFO L124 PetriNetUnfolderBase]: 182/331 cut-off events. [2024-06-28 00:17:01,785 INFO L125 PetriNetUnfolderBase]: For 1322/1322 co-relation queries the response was YES. [2024-06-28 00:17:01,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 331 events. 182/331 cut-off events. For 1322/1322 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1154 event pairs, 44 based on Foata normal form. 2/332 useless extension candidates. Maximal degree in co-relation 1316. Up to 282 conditions per place. [2024-06-28 00:17:01,787 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-28 00:17:01,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 544 flow [2024-06-28 00:17:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-28 00:17:01,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891625615763547 [2024-06-28 00:17:01,789 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 360 flow. Second operand 7 states and 79 transitions. [2024-06-28 00:17:01,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 544 flow [2024-06-28 00:17:01,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 511 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:01,792 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 386 flow [2024-06-28 00:17:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-28 00:17:01,793 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 00:17:01,793 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 386 flow [2024-06-28 00:17:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:01,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:01,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:01,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:17:01,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:01,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1674161306, now seen corresponding path program 3 times [2024-06-28 00:17:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298269999] [2024-06-28 00:17:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298269999] [2024-06-28 00:17:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298269999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713463370] [2024-06-28 00:17:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:02,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:02,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:02,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:02,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:02,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:02,918 INFO L124 PetriNetUnfolderBase]: 180/328 cut-off events. [2024-06-28 00:17:02,918 INFO L125 PetriNetUnfolderBase]: For 1495/1495 co-relation queries the response was YES. [2024-06-28 00:17:02,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 328 events. 180/328 cut-off events. For 1495/1495 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1138 event pairs, 44 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1363. Up to 299 conditions per place. [2024-06-28 00:17:02,920 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 44 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2024-06-28 00:17:02,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 524 flow [2024-06-28 00:17:02,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:17:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:17:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-28 00:17:02,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850574712643678 [2024-06-28 00:17:02,922 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 386 flow. Second operand 6 states and 67 transitions. [2024-06-28 00:17:02,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 524 flow [2024-06-28 00:17:02,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 503 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:02,926 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 403 flow [2024-06-28 00:17:02,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-28 00:17:02,927 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 36 predicate places. [2024-06-28 00:17:02,928 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 403 flow [2024-06-28 00:17:02,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:02,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:02,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:02,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:17:02,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:02,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1674154610, now seen corresponding path program 2 times [2024-06-28 00:17:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303443597] [2024-06-28 00:17:02,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:02,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303443597] [2024-06-28 00:17:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303443597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559921972] [2024-06-28 00:17:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:03,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:03,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:03,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:03,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:03,981 INFO L124 PetriNetUnfolderBase]: 186/338 cut-off events. [2024-06-28 00:17:03,981 INFO L125 PetriNetUnfolderBase]: For 1830/1830 co-relation queries the response was YES. [2024-06-28 00:17:03,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 338 events. 186/338 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 42 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 1447. Up to 313 conditions per place. [2024-06-28 00:17:03,983 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-28 00:17:03,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 562 flow [2024-06-28 00:17:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:17:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:17:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-28 00:17:03,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735632183908046 [2024-06-28 00:17:03,985 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 403 flow. Second operand 6 states and 65 transitions. [2024-06-28 00:17:03,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 562 flow [2024-06-28 00:17:03,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 525 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:03,989 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 429 flow [2024-06-28 00:17:03,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-28 00:17:03,990 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2024-06-28 00:17:03,990 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 429 flow [2024-06-28 00:17:03,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:03,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:03,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:17:03,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:03,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:03,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1816891992, now seen corresponding path program 3 times [2024-06-28 00:17:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:03,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938147656] [2024-06-28 00:17:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:04,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:04,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938147656] [2024-06-28 00:17:04,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938147656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:04,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:04,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:04,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397047267] [2024-06-28 00:17:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:04,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:04,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:04,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:04,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:04,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:04,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:04,998 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-28 00:17:04,999 INFO L125 PetriNetUnfolderBase]: For 2137/2137 co-relation queries the response was YES. [2024-06-28 00:17:04,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 340 events. 187/340 cut-off events. For 2137/2137 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1193 event pairs, 43 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 1507. Up to 288 conditions per place. [2024-06-28 00:17:05,001 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 45 selfloop transitions, 22 changer transitions 0/69 dead transitions. [2024-06-28 00:17:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 627 flow [2024-06-28 00:17:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:17:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:17:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 00:17:05,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40804597701149425 [2024-06-28 00:17:05,002 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 429 flow. Second operand 6 states and 71 transitions. [2024-06-28 00:17:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 627 flow [2024-06-28 00:17:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 612 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:17:05,007 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 482 flow [2024-06-28 00:17:05,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-28 00:17:05,008 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2024-06-28 00:17:05,008 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 482 flow [2024-06-28 00:17:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:05,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:17:05,009 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:05,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash 31790738, now seen corresponding path program 4 times [2024-06-28 00:17:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354469830] [2024-06-28 00:17:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354469830] [2024-06-28 00:17:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354469830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906936664] [2024-06-28 00:17:06,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:06,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:06,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:06,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:06,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:06,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:06,425 INFO L124 PetriNetUnfolderBase]: 194/352 cut-off events. [2024-06-28 00:17:06,425 INFO L125 PetriNetUnfolderBase]: For 2471/2473 co-relation queries the response was YES. [2024-06-28 00:17:06,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 352 events. 194/352 cut-off events. For 2471/2473 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1255 event pairs, 35 based on Foata normal form. 3/354 useless extension candidates. Maximal degree in co-relation 1621. Up to 285 conditions per place. [2024-06-28 00:17:06,427 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 50 selfloop transitions, 29 changer transitions 0/81 dead transitions. [2024-06-28 00:17:06,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 748 flow [2024-06-28 00:17:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:17:06,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:17:06,429 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 482 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:17:06,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 748 flow [2024-06-28 00:17:06,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 708 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:06,439 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 580 flow [2024-06-28 00:17:06,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=580, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-06-28 00:17:06,440 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 48 predicate places. [2024-06-28 00:17:06,440 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 580 flow [2024-06-28 00:17:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:06,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:06,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:17:06,441 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 326477068, now seen corresponding path program 5 times [2024-06-28 00:17:06,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022010206] [2024-06-28 00:17:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022010206] [2024-06-28 00:17:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022010206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:07,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:07,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:07,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020301746] [2024-06-28 00:17:07,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:07,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:07,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:07,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:07,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:07,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:07,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:07,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:07,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:08,329 INFO L124 PetriNetUnfolderBase]: 197/357 cut-off events. [2024-06-28 00:17:08,329 INFO L125 PetriNetUnfolderBase]: For 2663/2663 co-relation queries the response was YES. [2024-06-28 00:17:08,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 357 events. 197/357 cut-off events. For 2663/2663 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1281 event pairs, 36 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1723. Up to 289 conditions per place. [2024-06-28 00:17:08,331 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 52 selfloop transitions, 30 changer transitions 0/84 dead transitions. [2024-06-28 00:17:08,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 850 flow [2024-06-28 00:17:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:08,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:17:08,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362068965517243 [2024-06-28 00:17:08,333 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 580 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:17:08,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 850 flow [2024-06-28 00:17:08,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 811 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:08,339 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 683 flow [2024-06-28 00:17:08,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=683, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-06-28 00:17:08,340 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 55 predicate places. [2024-06-28 00:17:08,340 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 683 flow [2024-06-28 00:17:08,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:08,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:08,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:08,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:17:08,341 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:08,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 343231948, now seen corresponding path program 6 times [2024-06-28 00:17:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:08,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390585003] [2024-06-28 00:17:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:09,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:09,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390585003] [2024-06-28 00:17:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390585003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:09,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:09,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851300226] [2024-06-28 00:17:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:09,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:09,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 683 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:09,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:09,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:09,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:10,221 INFO L124 PetriNetUnfolderBase]: 195/354 cut-off events. [2024-06-28 00:17:10,221 INFO L125 PetriNetUnfolderBase]: For 2912/2912 co-relation queries the response was YES. [2024-06-28 00:17:10,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 354 events. 195/354 cut-off events. For 2912/2912 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1269 event pairs, 35 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1783. Up to 318 conditions per place. [2024-06-28 00:17:10,226 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 61 selfloop transitions, 19 changer transitions 0/82 dead transitions. [2024-06-28 00:17:10,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 869 flow [2024-06-28 00:17:10,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 00:17:10,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 00:17:10,227 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 683 flow. Second operand 8 states and 83 transitions. [2024-06-28 00:17:10,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 869 flow [2024-06-28 00:17:10,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 794 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:10,234 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 651 flow [2024-06-28 00:17:10,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-06-28 00:17:10,236 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-06-28 00:17:10,236 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 651 flow [2024-06-28 00:17:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:10,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:10,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:17:10,236 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash -187293886, now seen corresponding path program 4 times [2024-06-28 00:17:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582028309] [2024-06-28 00:17:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:10,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582028309] [2024-06-28 00:17:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582028309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:11,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:11,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844700063] [2024-06-28 00:17:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:11,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:11,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:11,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 651 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:11,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:11,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:11,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:12,170 INFO L124 PetriNetUnfolderBase]: 193/351 cut-off events. [2024-06-28 00:17:12,170 INFO L125 PetriNetUnfolderBase]: For 3150/3150 co-relation queries the response was YES. [2024-06-28 00:17:12,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 351 events. 193/351 cut-off events. For 3150/3150 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1245 event pairs, 36 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 1722. Up to 296 conditions per place. [2024-06-28 00:17:12,174 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 62 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-06-28 00:17:12,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 914 flow [2024-06-28 00:17:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:17:12,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:17:12,177 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 651 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:17:12,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 914 flow [2024-06-28 00:17:12,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 851 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:12,187 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 702 flow [2024-06-28 00:17:12,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=702, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-06-28 00:17:12,188 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 60 predicate places. [2024-06-28 00:17:12,188 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 702 flow [2024-06-28 00:17:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:12,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:12,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:12,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:17:12,189 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:12,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1816645914, now seen corresponding path program 1 times [2024-06-28 00:17:12,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:12,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638452326] [2024-06-28 00:17:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:12,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:13,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:13,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638452326] [2024-06-28 00:17:13,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638452326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:13,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:13,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:13,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914302583] [2024-06-28 00:17:13,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:13,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:13,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:13,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:13,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:13,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 702 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:13,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:13,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:13,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:14,098 INFO L124 PetriNetUnfolderBase]: 190/346 cut-off events. [2024-06-28 00:17:14,098 INFO L125 PetriNetUnfolderBase]: For 3452/3452 co-relation queries the response was YES. [2024-06-28 00:17:14,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1796 conditions, 346 events. 190/346 cut-off events. For 3452/3452 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1226 event pairs, 40 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 1751. Up to 321 conditions per place. [2024-06-28 00:17:14,103 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 71 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-28 00:17:14,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 84 transitions, 880 flow [2024-06-28 00:17:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 68 transitions. [2024-06-28 00:17:14,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33497536945812806 [2024-06-28 00:17:14,105 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 702 flow. Second operand 7 states and 68 transitions. [2024-06-28 00:17:14,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 84 transitions, 880 flow [2024-06-28 00:17:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 857 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:14,115 INFO L231 Difference]: Finished difference. Result has 91 places, 78 transitions, 705 flow [2024-06-28 00:17:14,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=91, PETRI_TRANSITIONS=78} [2024-06-28 00:17:14,116 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-28 00:17:14,117 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 78 transitions, 705 flow [2024-06-28 00:17:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:14,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:14,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:14,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:17:14,117 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:14,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 172721519, now seen corresponding path program 1 times [2024-06-28 00:17:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469040979] [2024-06-28 00:17:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:15,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:15,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469040979] [2024-06-28 00:17:15,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469040979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:15,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:15,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823852637] [2024-06-28 00:17:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:15,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:15,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:15,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 78 transitions, 705 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:15,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:15,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:15,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:15,750 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-28 00:17:15,751 INFO L125 PetriNetUnfolderBase]: For 4378/4378 co-relation queries the response was YES. [2024-06-28 00:17:15,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 399 events. 222/399 cut-off events. For 4378/4378 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1469 event pairs, 41 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 2018. Up to 293 conditions per place. [2024-06-28 00:17:15,754 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 68 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2024-06-28 00:17:15,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 1095 flow [2024-06-28 00:17:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 00:17:15,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-28 00:17:15,755 INFO L175 Difference]: Start difference. First operand has 91 places, 78 transitions, 705 flow. Second operand 9 states and 101 transitions. [2024-06-28 00:17:15,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 1095 flow [2024-06-28 00:17:15,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 102 transitions, 1058 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:15,769 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 831 flow [2024-06-28 00:17:15,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-06-28 00:17:15,769 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 68 predicate places. [2024-06-28 00:17:15,769 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 831 flow [2024-06-28 00:17:15,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:15,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:15,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:15,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:17:15,770 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:15,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash 956691697, now seen corresponding path program 2 times [2024-06-28 00:17:15,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:15,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202943174] [2024-06-28 00:17:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:15,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202943174] [2024-06-28 00:17:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202943174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427195841] [2024-06-28 00:17:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:16,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:17,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:17,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 831 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:17,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:17,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:17,232 INFO L124 PetriNetUnfolderBase]: 238/426 cut-off events. [2024-06-28 00:17:17,233 INFO L125 PetriNetUnfolderBase]: For 5500/5500 co-relation queries the response was YES. [2024-06-28 00:17:17,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 426 events. 238/426 cut-off events. For 5500/5500 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1610 event pairs, 40 based on Foata normal form. 3/428 useless extension candidates. Maximal degree in co-relation 2362. Up to 336 conditions per place. [2024-06-28 00:17:17,236 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 73 selfloop transitions, 31 changer transitions 0/106 dead transitions. [2024-06-28 00:17:17,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 106 transitions, 1221 flow [2024-06-28 00:17:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 00:17:17,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-28 00:17:17,239 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 831 flow. Second operand 8 states and 95 transitions. [2024-06-28 00:17:17,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 106 transitions, 1221 flow [2024-06-28 00:17:17,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 106 transitions, 1172 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:17,252 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 901 flow [2024-06-28 00:17:17,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=901, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2024-06-28 00:17:17,252 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 72 predicate places. [2024-06-28 00:17:17,253 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 901 flow [2024-06-28 00:17:17,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:17,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:17,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:17,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:17:17,253 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:17,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash 686719030, now seen corresponding path program 1 times [2024-06-28 00:17:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:17,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174804467] [2024-06-28 00:17:17,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:17,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174804467] [2024-06-28 00:17:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174804467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:18,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109632144] [2024-06-28 00:17:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:18,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:18,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 901 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:18,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:18,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:18,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:18,396 INFO L124 PetriNetUnfolderBase]: 242/432 cut-off events. [2024-06-28 00:17:18,396 INFO L125 PetriNetUnfolderBase]: For 5994/5994 co-relation queries the response was YES. [2024-06-28 00:17:18,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 432 events. 242/432 cut-off events. For 5994/5994 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1632 event pairs, 43 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2477. Up to 331 conditions per place. [2024-06-28 00:17:18,399 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 70 selfloop transitions, 36 changer transitions 0/108 dead transitions. [2024-06-28 00:17:18,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 108 transitions, 1245 flow [2024-06-28 00:17:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:18,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:17:18,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 00:17:18,401 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 901 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:17:18,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 108 transitions, 1245 flow [2024-06-28 00:17:18,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 1180 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:18,415 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 950 flow [2024-06-28 00:17:18,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=950, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-06-28 00:17:18,415 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 75 predicate places. [2024-06-28 00:17:18,415 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 950 flow [2024-06-28 00:17:18,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:18,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:18,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:18,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:17:18,416 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:18,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash 960416502, now seen corresponding path program 2 times [2024-06-28 00:17:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448073977] [2024-06-28 00:17:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:19,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448073977] [2024-06-28 00:17:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448073977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:19,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:19,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369875667] [2024-06-28 00:17:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:19,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:19,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:19,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:19,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 950 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:19,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:19,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:19,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:19,890 INFO L124 PetriNetUnfolderBase]: 288/506 cut-off events. [2024-06-28 00:17:19,890 INFO L125 PetriNetUnfolderBase]: For 8180/8180 co-relation queries the response was YES. [2024-06-28 00:17:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 506 events. 288/506 cut-off events. For 8180/8180 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1988 event pairs, 49 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 3026. Up to 400 conditions per place. [2024-06-28 00:17:19,895 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 87 selfloop transitions, 39 changer transitions 0/128 dead transitions. [2024-06-28 00:17:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 128 transitions, 1499 flow [2024-06-28 00:17:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 00:17:19,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38275862068965516 [2024-06-28 00:17:19,896 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 950 flow. Second operand 10 states and 111 transitions. [2024-06-28 00:17:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 128 transitions, 1499 flow [2024-06-28 00:17:19,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 128 transitions, 1451 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:19,913 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 1139 flow [2024-06-28 00:17:19,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1139, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-06-28 00:17:19,914 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-28 00:17:19,914 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 1139 flow [2024-06-28 00:17:19,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:19,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:19,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:17:19,914 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:19,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 960410922, now seen corresponding path program 3 times [2024-06-28 00:17:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:19,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536246953] [2024-06-28 00:17:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:20,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536246953] [2024-06-28 00:17:20,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536246953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:20,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750725914] [2024-06-28 00:17:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:20,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:20,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:20,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:20,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 1139 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:20,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:20,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:20,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:21,197 INFO L124 PetriNetUnfolderBase]: 284/500 cut-off events. [2024-06-28 00:17:21,198 INFO L125 PetriNetUnfolderBase]: For 8816/8816 co-relation queries the response was YES. [2024-06-28 00:17:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 500 events. 284/500 cut-off events. For 8816/8816 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1962 event pairs, 49 based on Foata normal form. 2/501 useless extension candidates. Maximal degree in co-relation 3146. Up to 430 conditions per place. [2024-06-28 00:17:21,202 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 88 selfloop transitions, 32 changer transitions 0/122 dead transitions. [2024-06-28 00:17:21,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 1457 flow [2024-06-28 00:17:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:21,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 00:17:21,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 00:17:21,204 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 1139 flow. Second operand 9 states and 96 transitions. [2024-06-28 00:17:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 1457 flow [2024-06-28 00:17:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 122 transitions, 1406 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:21,223 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 1158 flow [2024-06-28 00:17:21,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-06-28 00:17:21,224 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 00:17:21,224 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 1158 flow [2024-06-28 00:17:21,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:21,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:21,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:21,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:17:21,226 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:21,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash 690437945, now seen corresponding path program 3 times [2024-06-28 00:17:21,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:21,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214223263] [2024-06-28 00:17:21,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:21,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:22,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:22,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214223263] [2024-06-28 00:17:22,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214223263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:22,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:22,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:22,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651673707] [2024-06-28 00:17:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:22,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:22,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 1158 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:22,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:22,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:22,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:22,834 INFO L124 PetriNetUnfolderBase]: 276/488 cut-off events. [2024-06-28 00:17:22,834 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-06-28 00:17:22,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 488 events. 276/488 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1903 event pairs, 47 based on Foata normal form. 4/491 useless extension candidates. Maximal degree in co-relation 3066. Up to 402 conditions per place. [2024-06-28 00:17:22,838 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 84 selfloop transitions, 36 changer transitions 0/122 dead transitions. [2024-06-28 00:17:22,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 1479 flow [2024-06-28 00:17:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:17:22,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2024-06-28 00:17:22,840 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 1158 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:17:22,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 1479 flow [2024-06-28 00:17:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1395 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:22,860 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 1158 flow [2024-06-28 00:17:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-06-28 00:17:22,861 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-06-28 00:17:22,861 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 1158 flow [2024-06-28 00:17:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:22,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:22,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:22,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:17:22,862 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:22,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash -156608640, now seen corresponding path program 4 times [2024-06-28 00:17:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771031195] [2024-06-28 00:17:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:23,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:23,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771031195] [2024-06-28 00:17:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771031195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:23,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977631394] [2024-06-28 00:17:23,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:23,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:23,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:23,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:23,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:23,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 110 transitions, 1158 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:23,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:23,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:24,019 INFO L124 PetriNetUnfolderBase]: 292/514 cut-off events. [2024-06-28 00:17:24,019 INFO L125 PetriNetUnfolderBase]: For 9931/9931 co-relation queries the response was YES. [2024-06-28 00:17:24,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3330 conditions, 514 events. 292/514 cut-off events. For 9931/9931 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2056 event pairs, 48 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 3274. Up to 429 conditions per place. [2024-06-28 00:17:24,023 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 98 selfloop transitions, 30 changer transitions 0/130 dead transitions. [2024-06-28 00:17:24,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 130 transitions, 1623 flow [2024-06-28 00:17:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:17:24,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:17:24,025 INFO L175 Difference]: Start difference. First operand has 116 places, 110 transitions, 1158 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:17:24,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 130 transitions, 1623 flow [2024-06-28 00:17:24,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 130 transitions, 1548 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:24,074 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 1222 flow [2024-06-28 00:17:24,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1222, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2024-06-28 00:17:24,074 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 88 predicate places. [2024-06-28 00:17:24,075 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 1222 flow [2024-06-28 00:17:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:24,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:24,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:24,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:17:24,075 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:24,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash -489081935, now seen corresponding path program 4 times [2024-06-28 00:17:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:24,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989225271] [2024-06-28 00:17:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:25,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989225271] [2024-06-28 00:17:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989225271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:25,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:25,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799072285] [2024-06-28 00:17:25,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:25,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:25,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:25,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 1222 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:25,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:25,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:25,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:25,454 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-28 00:17:25,455 INFO L125 PetriNetUnfolderBase]: For 10500/10500 co-relation queries the response was YES. [2024-06-28 00:17:25,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 516 events. 292/516 cut-off events. For 10500/10500 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2061 event pairs, 45 based on Foata normal form. 4/519 useless extension candidates. Maximal degree in co-relation 3252. Up to 398 conditions per place. [2024-06-28 00:17:25,459 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 90 selfloop transitions, 40 changer transitions 0/132 dead transitions. [2024-06-28 00:17:25,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 1641 flow [2024-06-28 00:17:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:25,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 00:17:25,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 00:17:25,460 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 1222 flow. Second operand 8 states and 92 transitions. [2024-06-28 00:17:25,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 1641 flow [2024-06-28 00:17:25,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 132 transitions, 1584 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:25,482 INFO L231 Difference]: Finished difference. Result has 120 places, 118 transitions, 1286 flow [2024-06-28 00:17:25,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1286, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2024-06-28 00:17:25,483 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 92 predicate places. [2024-06-28 00:17:25,483 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 1286 flow [2024-06-28 00:17:25,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:25,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:25,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:17:25,484 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:25,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash -156614220, now seen corresponding path program 5 times [2024-06-28 00:17:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:25,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894510679] [2024-06-28 00:17:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894510679] [2024-06-28 00:17:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894510679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:26,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:26,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:26,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559997897] [2024-06-28 00:17:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:26,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:26,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:26,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 1286 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:26,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:26,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:26,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:26,658 INFO L124 PetriNetUnfolderBase]: 288/510 cut-off events. [2024-06-28 00:17:26,659 INFO L125 PetriNetUnfolderBase]: For 10260/10260 co-relation queries the response was YES. [2024-06-28 00:17:26,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 510 events. 288/510 cut-off events. For 10260/10260 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2047 event pairs, 44 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 3278. Up to 428 conditions per place. [2024-06-28 00:17:26,675 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 95 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2024-06-28 00:17:26,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 131 transitions, 1682 flow [2024-06-28 00:17:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 00:17:26,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38362068965517243 [2024-06-28 00:17:26,679 INFO L175 Difference]: Start difference. First operand has 120 places, 118 transitions, 1286 flow. Second operand 8 states and 89 transitions. [2024-06-28 00:17:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 131 transitions, 1682 flow [2024-06-28 00:17:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 131 transitions, 1556 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:26,706 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 1234 flow [2024-06-28 00:17:26,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1234, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2024-06-28 00:17:26,707 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 93 predicate places. [2024-06-28 00:17:26,707 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 1234 flow [2024-06-28 00:17:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:26,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:26,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:17:26,708 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:26,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -481457423, now seen corresponding path program 1 times [2024-06-28 00:17:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518078119] [2024-06-28 00:17:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518078119] [2024-06-28 00:17:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518078119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:27,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:27,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042428925] [2024-06-28 00:17:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:27,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:27,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:27,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 1234 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:27,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:27,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:27,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:28,052 INFO L124 PetriNetUnfolderBase]: 286/507 cut-off events. [2024-06-28 00:17:28,053 INFO L125 PetriNetUnfolderBase]: For 10106/10106 co-relation queries the response was YES. [2024-06-28 00:17:28,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 507 events. 286/507 cut-off events. For 10106/10106 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2022 event pairs, 42 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 3176. Up to 455 conditions per place. [2024-06-28 00:17:28,057 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 98 selfloop transitions, 24 changer transitions 0/124 dead transitions. [2024-06-28 00:17:28,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 1494 flow [2024-06-28 00:17:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:28,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-28 00:17:28,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-28 00:17:28,059 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 1234 flow. Second operand 7 states and 73 transitions. [2024-06-28 00:17:28,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 1494 flow [2024-06-28 00:17:28,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 124 transitions, 1426 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:28,079 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 1234 flow [2024-06-28 00:17:28,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1234, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2024-06-28 00:17:28,080 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 94 predicate places. [2024-06-28 00:17:28,080 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 1234 flow [2024-06-28 00:17:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:28,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:28,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:28,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:17:28,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:28,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -481724550, now seen corresponding path program 6 times [2024-06-28 00:17:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:28,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213778546] [2024-06-28 00:17:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:28,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213778546] [2024-06-28 00:17:28,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213778546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:28,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:28,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:28,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691288561] [2024-06-28 00:17:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:28,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:28,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:28,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:28,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:28,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 1234 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:28,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:28,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:28,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:29,220 INFO L124 PetriNetUnfolderBase]: 280/497 cut-off events. [2024-06-28 00:17:29,220 INFO L125 PetriNetUnfolderBase]: For 10456/10456 co-relation queries the response was YES. [2024-06-28 00:17:29,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 497 events. 280/497 cut-off events. For 10456/10456 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1977 event pairs, 43 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 3105. Up to 463 conditions per place. [2024-06-28 00:17:29,226 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 108 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-06-28 00:17:29,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 127 transitions, 1524 flow [2024-06-28 00:17:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 00:17:29,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645320197044335 [2024-06-28 00:17:29,229 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 1234 flow. Second operand 7 states and 74 transitions. [2024-06-28 00:17:29,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 127 transitions, 1524 flow [2024-06-28 00:17:29,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 127 transitions, 1464 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:29,253 INFO L231 Difference]: Finished difference. Result has 122 places, 119 transitions, 1232 flow [2024-06-28 00:17:29,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1232, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2024-06-28 00:17:29,253 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 94 predicate places. [2024-06-28 00:17:29,254 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 1232 flow [2024-06-28 00:17:29,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:29,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:29,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:29,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:17:29,258 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:29,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1561576053, now seen corresponding path program 5 times [2024-06-28 00:17:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:29,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121910468] [2024-06-28 00:17:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:30,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121910468] [2024-06-28 00:17:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121910468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:30,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:30,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:30,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8567943] [2024-06-28 00:17:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:30,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:30,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:17:30,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 1232 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:30,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:30,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:17:30,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:30,819 INFO L124 PetriNetUnfolderBase]: 276/501 cut-off events. [2024-06-28 00:17:30,819 INFO L125 PetriNetUnfolderBase]: For 10393/10393 co-relation queries the response was YES. [2024-06-28 00:17:30,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3135 conditions, 501 events. 276/501 cut-off events. For 10393/10393 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2088 event pairs, 30 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 3076. Up to 217 conditions per place. [2024-06-28 00:17:30,822 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 66 selfloop transitions, 62 changer transitions 0/145 dead transitions. [2024-06-28 00:17:30,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 1734 flow [2024-06-28 00:17:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:30,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:17:30,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-28 00:17:30,824 INFO L175 Difference]: Start difference. First operand has 122 places, 119 transitions, 1232 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:17:30,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 1734 flow [2024-06-28 00:17:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 145 transitions, 1695 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:30,843 INFO L231 Difference]: Finished difference. Result has 128 places, 129 transitions, 1509 flow [2024-06-28 00:17:30,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1509, PETRI_PLACES=128, PETRI_TRANSITIONS=129} [2024-06-28 00:17:30,844 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 100 predicate places. [2024-06-28 00:17:30,844 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 129 transitions, 1509 flow [2024-06-28 00:17:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:30,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:30,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:30,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:17:30,845 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:30,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:30,845 INFO L85 PathProgramCache]: Analyzing trace with hash 705674753, now seen corresponding path program 6 times [2024-06-28 00:17:30,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:30,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768237594] [2024-06-28 00:17:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:32,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:32,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768237594] [2024-06-28 00:17:32,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768237594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:32,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:32,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:32,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63165710] [2024-06-28 00:17:32,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:32,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:32,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:32,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:32,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:17:32,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 129 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:32,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:32,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:17:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:32,418 INFO L124 PetriNetUnfolderBase]: 306/540 cut-off events. [2024-06-28 00:17:32,420 INFO L125 PetriNetUnfolderBase]: For 11474/11474 co-relation queries the response was YES. [2024-06-28 00:17:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3766 conditions, 540 events. 306/540 cut-off events. For 11474/11474 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2211 event pairs, 38 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 3703. Up to 270 conditions per place. [2024-06-28 00:17:32,425 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 88 changer transitions 0/156 dead transitions. [2024-06-28 00:17:32,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 156 transitions, 2144 flow [2024-06-28 00:17:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 00:17:32,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4698275862068966 [2024-06-28 00:17:32,427 INFO L175 Difference]: Start difference. First operand has 128 places, 129 transitions, 1509 flow. Second operand 8 states and 109 transitions. [2024-06-28 00:17:32,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 156 transitions, 2144 flow [2024-06-28 00:17:32,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 156 transitions, 2080 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:32,456 INFO L231 Difference]: Finished difference. Result has 134 places, 137 transitions, 1804 flow [2024-06-28 00:17:32,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1804, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2024-06-28 00:17:32,457 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2024-06-28 00:17:32,457 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 1804 flow [2024-06-28 00:17:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:32,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:32,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:17:32,459 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:32,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash 985513613, now seen corresponding path program 7 times [2024-06-28 00:17:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:32,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106856937] [2024-06-28 00:17:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:33,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106856937] [2024-06-28 00:17:33,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106856937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:33,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451126432] [2024-06-28 00:17:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:33,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:33,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:33,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:17:33,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 1804 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:33,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:33,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:17:33,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:33,915 INFO L124 PetriNetUnfolderBase]: 327/575 cut-off events. [2024-06-28 00:17:33,916 INFO L125 PetriNetUnfolderBase]: For 13543/13543 co-relation queries the response was YES. [2024-06-28 00:17:33,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 575 events. 327/575 cut-off events. For 13543/13543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2403 event pairs, 38 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 4271. Up to 370 conditions per place. [2024-06-28 00:17:33,920 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 86 selfloop transitions, 72 changer transitions 0/160 dead transitions. [2024-06-28 00:17:33,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 160 transitions, 2417 flow [2024-06-28 00:17:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-28 00:17:33,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46120689655172414 [2024-06-28 00:17:33,921 INFO L175 Difference]: Start difference. First operand has 134 places, 137 transitions, 1804 flow. Second operand 8 states and 107 transitions. [2024-06-28 00:17:33,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 160 transitions, 2417 flow [2024-06-28 00:17:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 2352 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:33,950 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1987 flow [2024-06-28 00:17:33,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1987, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2024-06-28 00:17:33,950 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 110 predicate places. [2024-06-28 00:17:33,950 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1987 flow [2024-06-28 00:17:33,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:33,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:33,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:17:33,951 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:33,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1530855406, now seen corresponding path program 7 times [2024-06-28 00:17:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640897033] [2024-06-28 00:17:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640897033] [2024-06-28 00:17:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640897033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589836853] [2024-06-28 00:17:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:35,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:35,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:35,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:35,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1987 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:35,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:35,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:35,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:36,406 INFO L124 PetriNetUnfolderBase]: 324/570 cut-off events. [2024-06-28 00:17:36,407 INFO L125 PetriNetUnfolderBase]: For 12982/12982 co-relation queries the response was YES. [2024-06-28 00:17:36,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4443 conditions, 570 events. 324/570 cut-off events. For 12982/12982 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2368 event pairs, 39 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 4377. Up to 447 conditions per place. [2024-06-28 00:17:36,411 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 115 selfloop transitions, 44 changer transitions 0/161 dead transitions. [2024-06-28 00:17:36,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 2502 flow [2024-06-28 00:17:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:17:36,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 00:17:36,413 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1987 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:17:36,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 2502 flow [2024-06-28 00:17:36,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 161 transitions, 2345 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:36,446 INFO L231 Difference]: Finished difference. Result has 143 places, 147 transitions, 2010 flow [2024-06-28 00:17:36,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2010, PETRI_PLACES=143, PETRI_TRANSITIONS=147} [2024-06-28 00:17:36,448 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2024-06-28 00:17:36,448 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 147 transitions, 2010 flow [2024-06-28 00:17:36,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:36,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:36,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:36,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:17:36,448 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:36,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2050256531, now seen corresponding path program 8 times [2024-06-28 00:17:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:36,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975598889] [2024-06-28 00:17:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:37,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:37,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975598889] [2024-06-28 00:17:37,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975598889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:37,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:37,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517303313] [2024-06-28 00:17:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:37,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:37,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:37,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:17:37,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 147 transitions, 2010 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:37,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:37,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:17:37,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:37,858 INFO L124 PetriNetUnfolderBase]: 320/565 cut-off events. [2024-06-28 00:17:37,859 INFO L125 PetriNetUnfolderBase]: For 12393/12393 co-relation queries the response was YES. [2024-06-28 00:17:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4320 conditions, 565 events. 320/565 cut-off events. For 12393/12393 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2344 event pairs, 42 based on Foata normal form. 3/567 useless extension candidates. Maximal degree in co-relation 4252. Up to 433 conditions per place. [2024-06-28 00:17:37,863 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 110 selfloop transitions, 49 changer transitions 0/161 dead transitions. [2024-06-28 00:17:37,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 161 transitions, 2483 flow [2024-06-28 00:17:37,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 00:17:37,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2024-06-28 00:17:37,889 INFO L175 Difference]: Start difference. First operand has 143 places, 147 transitions, 2010 flow. Second operand 8 states and 102 transitions. [2024-06-28 00:17:37,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 161 transitions, 2483 flow [2024-06-28 00:17:37,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 161 transitions, 2394 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:37,922 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 2042 flow [2024-06-28 00:17:37,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2024-06-28 00:17:37,923 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2024-06-28 00:17:37,923 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 2042 flow [2024-06-28 00:17:37,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:37,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:37,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:37,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:17:37,923 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:37,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2033281613, now seen corresponding path program 2 times [2024-06-28 00:17:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:37,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597630856] [2024-06-28 00:17:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:37,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:39,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597630856] [2024-06-28 00:17:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597630856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:39,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924932054] [2024-06-28 00:17:39,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:39,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:39,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:39,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:39,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:39,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:39,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 2042 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:39,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:39,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:39,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:39,412 INFO L124 PetriNetUnfolderBase]: 318/562 cut-off events. [2024-06-28 00:17:39,412 INFO L125 PetriNetUnfolderBase]: For 12047/12047 co-relation queries the response was YES. [2024-06-28 00:17:39,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 562 events. 318/562 cut-off events. For 12047/12047 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2337 event pairs, 42 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 4260. Up to 495 conditions per place. [2024-06-28 00:17:39,418 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 124 selfloop transitions, 31 changer transitions 0/157 dead transitions. [2024-06-28 00:17:39,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 157 transitions, 2378 flow [2024-06-28 00:17:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 00:17:39,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:17:39,419 INFO L175 Difference]: Start difference. First operand has 146 places, 147 transitions, 2042 flow. Second operand 8 states and 88 transitions. [2024-06-28 00:17:39,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 157 transitions, 2378 flow [2024-06-28 00:17:39,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 157 transitions, 2172 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:39,452 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 1904 flow [2024-06-28 00:17:39,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1904, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2024-06-28 00:17:39,452 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2024-06-28 00:17:39,453 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 1904 flow [2024-06-28 00:17:39,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:39,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:39,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:39,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:17:39,454 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:39,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2033281396, now seen corresponding path program 8 times [2024-06-28 00:17:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:39,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639983935] [2024-06-28 00:17:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:39,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:41,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:41,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639983935] [2024-06-28 00:17:41,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639983935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:41,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:41,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697102129] [2024-06-28 00:17:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:41,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:41,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:41,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 1904 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:41,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:41,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:41,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:41,677 INFO L124 PetriNetUnfolderBase]: 321/567 cut-off events. [2024-06-28 00:17:41,678 INFO L125 PetriNetUnfolderBase]: For 11531/11531 co-relation queries the response was YES. [2024-06-28 00:17:41,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4192 conditions, 567 events. 321/567 cut-off events. For 11531/11531 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2366 event pairs, 42 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 4123. Up to 502 conditions per place. [2024-06-28 00:17:41,683 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 130 selfloop transitions, 31 changer transitions 0/163 dead transitions. [2024-06-28 00:17:41,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 163 transitions, 2336 flow [2024-06-28 00:17:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 00:17:41,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510971786833856 [2024-06-28 00:17:41,688 INFO L175 Difference]: Start difference. First operand has 146 places, 147 transitions, 1904 flow. Second operand 11 states and 112 transitions. [2024-06-28 00:17:41,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 163 transitions, 2336 flow [2024-06-28 00:17:41,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 163 transitions, 2256 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:41,719 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1913 flow [2024-06-28 00:17:41,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1913, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-06-28 00:17:41,719 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:17:41,719 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1913 flow [2024-06-28 00:17:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:41,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:41,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:41,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:17:41,720 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:41,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1534574476, now seen corresponding path program 9 times [2024-06-28 00:17:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635361679] [2024-06-28 00:17:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635361679] [2024-06-28 00:17:43,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635361679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:43,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704295697] [2024-06-28 00:17:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:43,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:43,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1913 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:43,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:43,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:43,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:43,827 INFO L124 PetriNetUnfolderBase]: 318/562 cut-off events. [2024-06-28 00:17:43,827 INFO L125 PetriNetUnfolderBase]: For 11716/11716 co-relation queries the response was YES. [2024-06-28 00:17:43,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 562 events. 318/562 cut-off events. For 11716/11716 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2337 event pairs, 42 based on Foata normal form. 1/562 useless extension candidates. Maximal degree in co-relation 4084. Up to 498 conditions per place. [2024-06-28 00:17:43,831 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 128 selfloop transitions, 30 changer transitions 0/160 dead transitions. [2024-06-28 00:17:43,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 160 transitions, 2257 flow [2024-06-28 00:17:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 00:17:43,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2024-06-28 00:17:43,851 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1913 flow. Second operand 9 states and 97 transitions. [2024-06-28 00:17:43,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 160 transitions, 2257 flow [2024-06-28 00:17:43,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 160 transitions, 2175 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:43,882 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1896 flow [2024-06-28 00:17:43,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1896, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-06-28 00:17:43,883 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 00:17:43,883 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1896 flow [2024-06-28 00:17:43,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:43,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:43,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:43,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:17:43,884 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:43,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -410184659, now seen corresponding path program 1 times [2024-06-28 00:17:43,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:43,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164441057] [2024-06-28 00:17:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:45,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:45,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164441057] [2024-06-28 00:17:45,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164441057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:45,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:45,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:45,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649288945] [2024-06-28 00:17:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:45,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:45,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:45,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:45,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:45,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1896 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:45,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:45,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:45,655 INFO L124 PetriNetUnfolderBase]: 363/655 cut-off events. [2024-06-28 00:17:45,656 INFO L125 PetriNetUnfolderBase]: For 18139/18139 co-relation queries the response was YES. [2024-06-28 00:17:45,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4829 conditions, 655 events. 363/655 cut-off events. For 18139/18139 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2913 event pairs, 71 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4758. Up to 418 conditions per place. [2024-06-28 00:17:45,671 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 124 selfloop transitions, 47 changer transitions 0/173 dead transitions. [2024-06-28 00:17:45,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 173 transitions, 2466 flow [2024-06-28 00:17:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 00:17:45,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931034482758621 [2024-06-28 00:17:45,675 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1896 flow. Second operand 10 states and 114 transitions. [2024-06-28 00:17:45,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 173 transitions, 2466 flow [2024-06-28 00:17:45,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 2406 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:45,716 INFO L231 Difference]: Finished difference. Result has 153 places, 152 transitions, 1976 flow [2024-06-28 00:17:45,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=153, PETRI_TRANSITIONS=152} [2024-06-28 00:17:45,717 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 125 predicate places. [2024-06-28 00:17:45,717 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 152 transitions, 1976 flow [2024-06-28 00:17:45,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:45,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:45,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:45,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:17:45,718 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:45,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -410124085, now seen corresponding path program 1 times [2024-06-28 00:17:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343782047] [2024-06-28 00:17:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:46,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343782047] [2024-06-28 00:17:46,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343782047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:46,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:46,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:46,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820372669] [2024-06-28 00:17:46,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:46,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:46,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:46,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:46,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:46,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 152 transitions, 1976 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:46,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:46,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:46,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:47,299 INFO L124 PetriNetUnfolderBase]: 379/681 cut-off events. [2024-06-28 00:17:47,299 INFO L125 PetriNetUnfolderBase]: For 20392/20392 co-relation queries the response was YES. [2024-06-28 00:17:47,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 681 events. 379/681 cut-off events. For 20392/20392 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3055 event pairs, 76 based on Foata normal form. 2/682 useless extension candidates. Maximal degree in co-relation 5121. Up to 530 conditions per place. [2024-06-28 00:17:47,303 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 121 selfloop transitions, 48 changer transitions 0/171 dead transitions. [2024-06-28 00:17:47,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 171 transitions, 2548 flow [2024-06-28 00:17:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:17:47,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 00:17:47,305 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 1976 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:17:47,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 171 transitions, 2548 flow [2024-06-28 00:17:47,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 171 transitions, 2466 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:47,350 INFO L231 Difference]: Finished difference. Result has 156 places, 156 transitions, 2063 flow [2024-06-28 00:17:47,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2063, PETRI_PLACES=156, PETRI_TRANSITIONS=156} [2024-06-28 00:17:47,351 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 128 predicate places. [2024-06-28 00:17:47,351 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 156 transitions, 2063 flow [2024-06-28 00:17:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:47,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:47,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:47,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:17:47,352 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:47,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash -410124209, now seen corresponding path program 2 times [2024-06-28 00:17:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475603224] [2024-06-28 00:17:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:47,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:48,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:48,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475603224] [2024-06-28 00:17:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475603224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:48,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207701096] [2024-06-28 00:17:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:48,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:48,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:48,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 156 transitions, 2063 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:48,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:48,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:48,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:49,041 INFO L124 PetriNetUnfolderBase]: 383/689 cut-off events. [2024-06-28 00:17:49,041 INFO L125 PetriNetUnfolderBase]: For 21758/21758 co-relation queries the response was YES. [2024-06-28 00:17:49,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 689 events. 383/689 cut-off events. For 21758/21758 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3107 event pairs, 80 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 5263. Up to 558 conditions per place. [2024-06-28 00:17:49,047 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 123 selfloop transitions, 46 changer transitions 0/171 dead transitions. [2024-06-28 00:17:49,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 171 transitions, 2516 flow [2024-06-28 00:17:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:49,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 00:17:49,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-06-28 00:17:49,048 INFO L175 Difference]: Start difference. First operand has 156 places, 156 transitions, 2063 flow. Second operand 10 states and 107 transitions. [2024-06-28 00:17:49,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 171 transitions, 2516 flow [2024-06-28 00:17:49,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 171 transitions, 2442 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:49,097 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 2098 flow [2024-06-28 00:17:49,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2024-06-28 00:17:49,097 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 133 predicate places. [2024-06-28 00:17:49,097 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 2098 flow [2024-06-28 00:17:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:49,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:49,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:49,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:17:49,098 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash -407327699, now seen corresponding path program 3 times [2024-06-28 00:17:49,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:49,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710489785] [2024-06-28 00:17:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:49,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:50,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710489785] [2024-06-28 00:17:50,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710489785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:50,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230496415] [2024-06-28 00:17:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:50,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:50,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:50,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:50,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 2098 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:50,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:50,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:50,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:50,758 INFO L124 PetriNetUnfolderBase]: 403/733 cut-off events. [2024-06-28 00:17:50,758 INFO L125 PetriNetUnfolderBase]: For 28190/28190 co-relation queries the response was YES. [2024-06-28 00:17:50,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5607 conditions, 733 events. 403/733 cut-off events. For 28190/28190 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3397 event pairs, 86 based on Foata normal form. 12/744 useless extension candidates. Maximal degree in co-relation 5530. Up to 595 conditions per place. [2024-06-28 00:17:50,777 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 131 selfloop transitions, 35 changer transitions 7/175 dead transitions. [2024-06-28 00:17:50,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 175 transitions, 2593 flow [2024-06-28 00:17:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:17:50,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:17:50,793 INFO L175 Difference]: Start difference. First operand has 161 places, 157 transitions, 2098 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:17:50,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 175 transitions, 2593 flow [2024-06-28 00:17:50,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 2497 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:50,853 INFO L231 Difference]: Finished difference. Result has 163 places, 156 transitions, 2059 flow [2024-06-28 00:17:50,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=163, PETRI_TRANSITIONS=156} [2024-06-28 00:17:50,853 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places. [2024-06-28 00:17:50,853 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 156 transitions, 2059 flow [2024-06-28 00:17:50,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:50,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:50,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:50,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:17:50,854 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:50,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -186550465, now seen corresponding path program 2 times [2024-06-28 00:17:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055284025] [2024-06-28 00:17:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:52,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055284025] [2024-06-28 00:17:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055284025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:52,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:52,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:52,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513809376] [2024-06-28 00:17:52,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:52,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:52,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 156 transitions, 2059 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:52,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:52,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:52,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:52,302 INFO L124 PetriNetUnfolderBase]: 388/700 cut-off events. [2024-06-28 00:17:52,303 INFO L125 PetriNetUnfolderBase]: For 24210/24210 co-relation queries the response was YES. [2024-06-28 00:17:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5492 conditions, 700 events. 388/700 cut-off events. For 24210/24210 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3165 event pairs, 83 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5414. Up to 574 conditions per place. [2024-06-28 00:17:52,308 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 117 selfloop transitions, 53 changer transitions 0/172 dead transitions. [2024-06-28 00:17:52,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 172 transitions, 2555 flow [2024-06-28 00:17:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 00:17:52,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-28 00:17:52,309 INFO L175 Difference]: Start difference. First operand has 163 places, 156 transitions, 2059 flow. Second operand 9 states and 102 transitions. [2024-06-28 00:17:52,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 172 transitions, 2555 flow [2024-06-28 00:17:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 172 transitions, 2479 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:52,368 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 2162 flow [2024-06-28 00:17:52,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2162, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-06-28 00:17:52,368 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 137 predicate places. [2024-06-28 00:17:52,369 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 2162 flow [2024-06-28 00:17:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:52,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:52,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:17:52,369 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:52,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:52,370 INFO L85 PathProgramCache]: Analyzing trace with hash -71074721, now seen corresponding path program 1 times [2024-06-28 00:17:52,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:52,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615779723] [2024-06-28 00:17:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615779723] [2024-06-28 00:17:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615779723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:53,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966805496] [2024-06-28 00:17:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:53,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:53,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 2162 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:53,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:53,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:53,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:53,862 INFO L124 PetriNetUnfolderBase]: 392/708 cut-off events. [2024-06-28 00:17:53,862 INFO L125 PetriNetUnfolderBase]: For 25764/25764 co-relation queries the response was YES. [2024-06-28 00:17:53,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5606 conditions, 708 events. 392/708 cut-off events. For 25764/25764 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3223 event pairs, 83 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 5526. Up to 648 conditions per place. [2024-06-28 00:17:53,868 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-28 00:17:53,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 171 transitions, 2540 flow [2024-06-28 00:17:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 00:17:53,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-28 00:17:53,881 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 2162 flow. Second operand 9 states and 91 transitions. [2024-06-28 00:17:53,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 171 transitions, 2540 flow [2024-06-28 00:17:53,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 171 transitions, 2423 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:53,943 INFO L231 Difference]: Finished difference. Result has 168 places, 161 transitions, 2113 flow [2024-06-28 00:17:53,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2113, PETRI_PLACES=168, PETRI_TRANSITIONS=161} [2024-06-28 00:17:53,944 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 140 predicate places. [2024-06-28 00:17:53,944 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 161 transitions, 2113 flow [2024-06-28 00:17:53,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:53,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:53,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:53,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:17:53,945 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:53,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:53,945 INFO L85 PathProgramCache]: Analyzing trace with hash -71259419, now seen corresponding path program 4 times [2024-06-28 00:17:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51899286] [2024-06-28 00:17:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:53,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:55,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51899286] [2024-06-28 00:17:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51899286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:55,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:55,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851259347] [2024-06-28 00:17:55,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:55,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:55,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:55,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:55,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 161 transitions, 2113 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:55,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:55,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:55,714 INFO L124 PetriNetUnfolderBase]: 408/746 cut-off events. [2024-06-28 00:17:55,715 INFO L125 PetriNetUnfolderBase]: For 32674/32674 co-relation queries the response was YES. [2024-06-28 00:17:55,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 746 events. 408/746 cut-off events. For 32674/32674 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3498 event pairs, 90 based on Foata normal form. 14/759 useless extension candidates. Maximal degree in co-relation 5557. Up to 655 conditions per place. [2024-06-28 00:17:55,721 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 148 selfloop transitions, 14 changer transitions 14/178 dead transitions. [2024-06-28 00:17:55,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 178 transitions, 2563 flow [2024-06-28 00:17:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 00:17:55,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-28 00:17:55,722 INFO L175 Difference]: Start difference. First operand has 168 places, 161 transitions, 2113 flow. Second operand 10 states and 101 transitions. [2024-06-28 00:17:55,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 178 transitions, 2563 flow [2024-06-28 00:17:55,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 178 transitions, 2501 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:55,781 INFO L231 Difference]: Finished difference. Result has 172 places, 157 transitions, 2030 flow [2024-06-28 00:17:55,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=172, PETRI_TRANSITIONS=157} [2024-06-28 00:17:55,782 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 00:17:55,782 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 157 transitions, 2030 flow [2024-06-28 00:17:55,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:55,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:55,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:55,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:17:55,783 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:55,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2039980603, now seen corresponding path program 2 times [2024-06-28 00:17:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551162623] [2024-06-28 00:17:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:56,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:56,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551162623] [2024-06-28 00:17:56,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551162623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:56,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:56,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693736388] [2024-06-28 00:17:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:56,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:56,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:56,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:56,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 157 transitions, 2030 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:56,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:56,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:56,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:57,038 INFO L124 PetriNetUnfolderBase]: 381/693 cut-off events. [2024-06-28 00:17:57,042 INFO L125 PetriNetUnfolderBase]: For 27991/27991 co-relation queries the response was YES. [2024-06-28 00:17:57,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5410 conditions, 693 events. 381/693 cut-off events. For 27991/27991 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3164 event pairs, 80 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 5327. Up to 657 conditions per place. [2024-06-28 00:17:57,048 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 152 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2024-06-28 00:17:57,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 166 transitions, 2388 flow [2024-06-28 00:17:57,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-28 00:17:57,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275862068965517 [2024-06-28 00:17:57,064 INFO L175 Difference]: Start difference. First operand has 172 places, 157 transitions, 2030 flow. Second operand 8 states and 76 transitions. [2024-06-28 00:17:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 166 transitions, 2388 flow [2024-06-28 00:17:57,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 166 transitions, 2348 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:17:57,127 INFO L231 Difference]: Finished difference. Result has 169 places, 158 transitions, 2032 flow [2024-06-28 00:17:57,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2032, PETRI_PLACES=169, PETRI_TRANSITIONS=158} [2024-06-28 00:17:57,127 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 141 predicate places. [2024-06-28 00:17:57,127 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 158 transitions, 2032 flow [2024-06-28 00:17:57,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:57,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:57,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:57,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:17:57,128 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:57,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:57,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2018514663, now seen corresponding path program 3 times [2024-06-28 00:17:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679985445] [2024-06-28 00:17:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:58,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:58,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679985445] [2024-06-28 00:17:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679985445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:58,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391342976] [2024-06-28 00:17:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:58,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:58,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 158 transitions, 2032 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:58,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:58,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:58,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:58,539 INFO L124 PetriNetUnfolderBase]: 385/701 cut-off events. [2024-06-28 00:17:58,539 INFO L125 PetriNetUnfolderBase]: For 26720/26720 co-relation queries the response was YES. [2024-06-28 00:17:58,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 701 events. 385/701 cut-off events. For 26720/26720 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3219 event pairs, 84 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 5322. Up to 635 conditions per place. [2024-06-28 00:17:58,544 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 139 selfloop transitions, 27 changer transitions 0/168 dead transitions. [2024-06-28 00:17:58,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 2406 flow [2024-06-28 00:17:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 00:17:58,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 00:17:58,546 INFO L175 Difference]: Start difference. First operand has 169 places, 158 transitions, 2032 flow. Second operand 8 states and 83 transitions. [2024-06-28 00:17:58,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 2406 flow [2024-06-28 00:17:58,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 168 transitions, 2374 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:58,604 INFO L231 Difference]: Finished difference. Result has 171 places, 159 transitions, 2076 flow [2024-06-28 00:17:58,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2076, PETRI_PLACES=171, PETRI_TRANSITIONS=159} [2024-06-28 00:17:58,605 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 143 predicate places. [2024-06-28 00:17:58,605 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 159 transitions, 2076 flow [2024-06-28 00:17:58,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:58,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:58,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:58,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:17:58,606 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:58,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2040277273, now seen corresponding path program 4 times [2024-06-28 00:17:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:58,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126137338] [2024-06-28 00:17:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:58,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:59,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:59,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126137338] [2024-06-28 00:17:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126137338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:59,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:59,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:59,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317344083] [2024-06-28 00:17:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:59,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:17:59,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 159 transitions, 2076 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:59,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:59,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:17:59,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:59,901 INFO L124 PetriNetUnfolderBase]: 389/709 cut-off events. [2024-06-28 00:17:59,901 INFO L125 PetriNetUnfolderBase]: For 28290/28290 co-relation queries the response was YES. [2024-06-28 00:17:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5513 conditions, 709 events. 389/709 cut-off events. For 28290/28290 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3278 event pairs, 84 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 5430. Up to 670 conditions per place. [2024-06-28 00:17:59,906 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 150 selfloop transitions, 16 changer transitions 0/168 dead transitions. [2024-06-28 00:17:59,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 168 transitions, 2448 flow [2024-06-28 00:17:59,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-28 00:17:59,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33620689655172414 [2024-06-28 00:17:59,908 INFO L175 Difference]: Start difference. First operand has 171 places, 159 transitions, 2076 flow. Second operand 8 states and 78 transitions. [2024-06-28 00:17:59,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 168 transitions, 2448 flow [2024-06-28 00:17:59,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 168 transitions, 2382 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:59,966 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 2065 flow [2024-06-28 00:17:59,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2065, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2024-06-28 00:17:59,966 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 00:17:59,966 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 2065 flow [2024-06-28 00:17:59,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:59,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:59,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:17:59,967 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:17:59,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:59,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2018330089, now seen corresponding path program 3 times [2024-06-28 00:17:59,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:59,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577326545] [2024-06-28 00:17:59,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:59,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:01,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577326545] [2024-06-28 00:18:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577326545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:01,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:01,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:01,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395338725] [2024-06-28 00:18:01,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:01,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:01,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:01,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:01,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 2065 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:01,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:01,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:01,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:01,444 INFO L124 PetriNetUnfolderBase]: 385/703 cut-off events. [2024-06-28 00:18:01,445 INFO L125 PetriNetUnfolderBase]: For 26769/26769 co-relation queries the response was YES. [2024-06-28 00:18:01,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 703 events. 385/703 cut-off events. For 26769/26769 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3240 event pairs, 85 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 5276. Up to 590 conditions per place. [2024-06-28 00:18:01,450 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 130 selfloop transitions, 43 changer transitions 0/175 dead transitions. [2024-06-28 00:18:01,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 2547 flow [2024-06-28 00:18:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:18:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-28 00:18:01,451 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 2065 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:18:01,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 2547 flow [2024-06-28 00:18:01,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 175 transitions, 2495 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:01,510 INFO L231 Difference]: Finished difference. Result has 176 places, 160 transitions, 2104 flow [2024-06-28 00:18:01,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2104, PETRI_PLACES=176, PETRI_TRANSITIONS=160} [2024-06-28 00:18:01,510 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 148 predicate places. [2024-06-28 00:18:01,510 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 160 transitions, 2104 flow [2024-06-28 00:18:01,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:01,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:01,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:01,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:18:01,511 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:01,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2048321091, now seen corresponding path program 1 times [2024-06-28 00:18:01,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:01,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611565097] [2024-06-28 00:18:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:02,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:02,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611565097] [2024-06-28 00:18:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611565097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:02,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:02,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260196267] [2024-06-28 00:18:02,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:02,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:02,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 160 transitions, 2104 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:02,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:02,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:02,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:02,892 INFO L124 PetriNetUnfolderBase]: 382/698 cut-off events. [2024-06-28 00:18:02,893 INFO L125 PetriNetUnfolderBase]: For 26669/26669 co-relation queries the response was YES. [2024-06-28 00:18:02,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5346 conditions, 698 events. 382/698 cut-off events. For 26669/26669 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3220 event pairs, 83 based on Foata normal form. 1/698 useless extension candidates. Maximal degree in co-relation 5261. Up to 656 conditions per place. [2024-06-28 00:18:02,898 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 146 selfloop transitions, 20 changer transitions 0/168 dead transitions. [2024-06-28 00:18:02,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 168 transitions, 2466 flow [2024-06-28 00:18:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:18:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:18:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 00:18:02,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645320197044335 [2024-06-28 00:18:02,901 INFO L175 Difference]: Start difference. First operand has 176 places, 160 transitions, 2104 flow. Second operand 7 states and 74 transitions. [2024-06-28 00:18:02,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 168 transitions, 2466 flow [2024-06-28 00:18:02,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 2343 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:02,964 INFO L231 Difference]: Finished difference. Result has 175 places, 160 transitions, 2031 flow [2024-06-28 00:18:02,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2031, PETRI_PLACES=175, PETRI_TRANSITIONS=160} [2024-06-28 00:18:02,964 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2024-06-28 00:18:02,964 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 160 transitions, 2031 flow [2024-06-28 00:18:02,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:02,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:02,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:02,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:18:02,965 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:02,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2018329965, now seen corresponding path program 5 times [2024-06-28 00:18:02,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:02,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32460961] [2024-06-28 00:18:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:02,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32460961] [2024-06-28 00:18:04,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32460961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:04,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:04,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149647330] [2024-06-28 00:18:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:04,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:04,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:04,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:04,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:04,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 160 transitions, 2031 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:04,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:04,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:04,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:04,525 INFO L124 PetriNetUnfolderBase]: 395/729 cut-off events. [2024-06-28 00:18:04,525 INFO L125 PetriNetUnfolderBase]: For 34491/34491 co-relation queries the response was YES. [2024-06-28 00:18:04,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 729 events. 395/729 cut-off events. For 34491/34491 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3424 event pairs, 86 based on Foata normal form. 12/740 useless extension candidates. Maximal degree in co-relation 5223. Up to 592 conditions per place. [2024-06-28 00:18:04,532 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 139 selfloop transitions, 28 changer transitions 10/179 dead transitions. [2024-06-28 00:18:04,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 179 transitions, 2477 flow [2024-06-28 00:18:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:18:04,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 00:18:04,534 INFO L175 Difference]: Start difference. First operand has 175 places, 160 transitions, 2031 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:18:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 179 transitions, 2477 flow [2024-06-28 00:18:04,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 2403 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:04,601 INFO L231 Difference]: Finished difference. Result has 179 places, 157 transitions, 1990 flow [2024-06-28 00:18:04,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1990, PETRI_PLACES=179, PETRI_TRANSITIONS=157} [2024-06-28 00:18:04,601 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2024-06-28 00:18:04,602 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 157 transitions, 1990 flow [2024-06-28 00:18:04,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:04,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:04,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:04,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:18:04,602 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:04,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1667183053, now seen corresponding path program 6 times [2024-06-28 00:18:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72788306] [2024-06-28 00:18:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:05,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:05,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72788306] [2024-06-28 00:18:05,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72788306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:05,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:05,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:18:05,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699332327] [2024-06-28 00:18:05,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:18:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:05,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:18:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:18:05,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 00:18:05,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 157 transitions, 1990 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:05,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:05,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 00:18:05,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:06,022 INFO L124 PetriNetUnfolderBase]: 295/613 cut-off events. [2024-06-28 00:18:06,023 INFO L125 PetriNetUnfolderBase]: For 30862/30869 co-relation queries the response was YES. [2024-06-28 00:18:06,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 613 events. 295/613 cut-off events. For 30862/30869 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3221 event pairs, 47 based on Foata normal form. 5/605 useless extension candidates. Maximal degree in co-relation 4578. Up to 334 conditions per place. [2024-06-28 00:18:06,028 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 64 selfloop transitions, 40 changer transitions 0/173 dead transitions. [2024-06-28 00:18:06,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 173 transitions, 2324 flow [2024-06-28 00:18:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 00:18:06,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-28 00:18:06,030 INFO L175 Difference]: Start difference. First operand has 179 places, 157 transitions, 1990 flow. Second operand 8 states and 104 transitions. [2024-06-28 00:18:06,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 173 transitions, 2324 flow [2024-06-28 00:18:06,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 173 transitions, 2276 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:06,098 INFO L231 Difference]: Finished difference. Result has 182 places, 159 transitions, 2057 flow [2024-06-28 00:18:06,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2057, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2024-06-28 00:18:06,098 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 154 predicate places. [2024-06-28 00:18:06,098 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 2057 flow [2024-06-28 00:18:06,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:06,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:06,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:18:06,099 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:06,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash -866556089, now seen corresponding path program 4 times [2024-06-28 00:18:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:06,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200018417] [2024-06-28 00:18:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:07,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200018417] [2024-06-28 00:18:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200018417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456831989] [2024-06-28 00:18:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:07,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 2057 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:07,670 INFO L124 PetriNetUnfolderBase]: 384/712 cut-off events. [2024-06-28 00:18:07,670 INFO L125 PetriNetUnfolderBase]: For 28420/28420 co-relation queries the response was YES. [2024-06-28 00:18:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5370 conditions, 712 events. 384/712 cut-off events. For 28420/28420 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3367 event pairs, 78 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 5280. Up to 576 conditions per place. [2024-06-28 00:18:07,676 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 50 changer transitions 0/174 dead transitions. [2024-06-28 00:18:07,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 174 transitions, 2559 flow [2024-06-28 00:18:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:18:07,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2024-06-28 00:18:07,678 INFO L175 Difference]: Start difference. First operand has 182 places, 159 transitions, 2057 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:18:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 174 transitions, 2559 flow [2024-06-28 00:18:07,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 174 transitions, 2514 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:07,752 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 2153 flow [2024-06-28 00:18:07,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2153, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-28 00:18:07,753 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 158 predicate places. [2024-06-28 00:18:07,753 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 2153 flow [2024-06-28 00:18:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:07,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:07,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:07,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:18:07,754 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:07,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash 397496657, now seen corresponding path program 7 times [2024-06-28 00:18:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:07,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822884062] [2024-06-28 00:18:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:07,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:08,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822884062] [2024-06-28 00:18:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822884062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:08,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754045786] [2024-06-28 00:18:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:08,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:08,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:09,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:09,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 2153 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 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) [2024-06-28 00:18:09,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:09,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:09,347 INFO L124 PetriNetUnfolderBase]: 421/787 cut-off events. [2024-06-28 00:18:09,348 INFO L125 PetriNetUnfolderBase]: For 38544/38544 co-relation queries the response was YES. [2024-06-28 00:18:09,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 787 events. 421/787 cut-off events. For 38544/38544 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3841 event pairs, 51 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 6100. Up to 275 conditions per place. [2024-06-28 00:18:09,354 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 88 selfloop transitions, 95 changer transitions 0/185 dead transitions. [2024-06-28 00:18:09,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 2787 flow [2024-06-28 00:18:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-28 00:18:09,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2024-06-28 00:18:09,355 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 2153 flow. Second operand 9 states and 120 transitions. [2024-06-28 00:18:09,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 2787 flow [2024-06-28 00:18:09,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 185 transitions, 2668 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:09,449 INFO L231 Difference]: Finished difference. Result has 188 places, 162 transitions, 2245 flow [2024-06-28 00:18:09,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2245, PETRI_PLACES=188, PETRI_TRANSITIONS=162} [2024-06-28 00:18:09,450 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 160 predicate places. [2024-06-28 00:18:09,450 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 162 transitions, 2245 flow [2024-06-28 00:18:09,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 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) [2024-06-28 00:18:09,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:09,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:18:09,451 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:09,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -32326899, now seen corresponding path program 5 times [2024-06-28 00:18:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288323866] [2024-06-28 00:18:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:10,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288323866] [2024-06-28 00:18:10,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288323866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:10,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:10,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287310038] [2024-06-28 00:18:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:10,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:10,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:10,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:10,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 162 transitions, 2245 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:10,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:10,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:10,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:10,878 INFO L124 PetriNetUnfolderBase]: 427/797 cut-off events. [2024-06-28 00:18:10,878 INFO L125 PetriNetUnfolderBase]: For 40519/40519 co-relation queries the response was YES. [2024-06-28 00:18:10,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6425 conditions, 797 events. 427/797 cut-off events. For 40519/40519 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3904 event pairs, 75 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 6334. Up to 492 conditions per place. [2024-06-28 00:18:10,884 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 82 selfloop transitions, 98 changer transitions 0/182 dead transitions. [2024-06-28 00:18:10,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 182 transitions, 2869 flow [2024-06-28 00:18:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-28 00:18:10,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521072796934866 [2024-06-28 00:18:10,886 INFO L175 Difference]: Start difference. First operand has 188 places, 162 transitions, 2245 flow. Second operand 9 states and 118 transitions. [2024-06-28 00:18:10,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 182 transitions, 2869 flow [2024-06-28 00:18:10,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 182 transitions, 2689 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:10,991 INFO L231 Difference]: Finished difference. Result has 190 places, 164 transitions, 2310 flow [2024-06-28 00:18:10,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=190, PETRI_TRANSITIONS=164} [2024-06-28 00:18:10,992 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 162 predicate places. [2024-06-28 00:18:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 164 transitions, 2310 flow [2024-06-28 00:18:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:10,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:10,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:10,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:18:10,999 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:10,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash -32327023, now seen corresponding path program 8 times [2024-06-28 00:18:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228106498] [2024-06-28 00:18:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:12,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:12,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228106498] [2024-06-28 00:18:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228106498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132445084] [2024-06-28 00:18:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:12,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:12,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 164 transitions, 2310 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 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) [2024-06-28 00:18:12,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:12,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:12,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:12,710 INFO L124 PetriNetUnfolderBase]: 431/805 cut-off events. [2024-06-28 00:18:12,711 INFO L125 PetriNetUnfolderBase]: For 40455/40455 co-relation queries the response was YES. [2024-06-28 00:18:12,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6471 conditions, 805 events. 431/805 cut-off events. For 40455/40455 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3947 event pairs, 79 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 6380. Up to 526 conditions per place. [2024-06-28 00:18:12,718 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 89 selfloop transitions, 91 changer transitions 0/182 dead transitions. [2024-06-28 00:18:12,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 182 transitions, 2815 flow [2024-06-28 00:18:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-28 00:18:12,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:18:12,719 INFO L175 Difference]: Start difference. First operand has 190 places, 164 transitions, 2310 flow. Second operand 9 states and 116 transitions. [2024-06-28 00:18:12,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 182 transitions, 2815 flow [2024-06-28 00:18:12,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 182 transitions, 2642 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:12,826 INFO L231 Difference]: Finished difference. Result has 192 places, 165 transitions, 2341 flow [2024-06-28 00:18:12,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2341, PETRI_PLACES=192, PETRI_TRANSITIONS=165} [2024-06-28 00:18:12,826 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 00:18:12,826 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 165 transitions, 2341 flow [2024-06-28 00:18:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 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) [2024-06-28 00:18:12,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:12,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:18:12,827 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:12,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 486151697, now seen corresponding path program 9 times [2024-06-28 00:18:12,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858371762] [2024-06-28 00:18:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:14,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858371762] [2024-06-28 00:18:14,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858371762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:14,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:14,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:14,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018827741] [2024-06-28 00:18:14,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:14,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:14,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:14,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:14,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 165 transitions, 2341 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:14,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:14,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:14,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:14,491 INFO L124 PetriNetUnfolderBase]: 447/843 cut-off events. [2024-06-28 00:18:14,491 INFO L125 PetriNetUnfolderBase]: For 49312/49312 co-relation queries the response was YES. [2024-06-28 00:18:14,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 843 events. 447/843 cut-off events. For 49312/49312 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4244 event pairs, 86 based on Foata normal form. 14/856 useless extension candidates. Maximal degree in co-relation 6429. Up to 685 conditions per place. [2024-06-28 00:18:14,498 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 132 selfloop transitions, 30 changer transitions 21/185 dead transitions. [2024-06-28 00:18:14,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 185 transitions, 2814 flow [2024-06-28 00:18:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:14,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 00:18:14,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421455938697318 [2024-06-28 00:18:14,499 INFO L175 Difference]: Start difference. First operand has 192 places, 165 transitions, 2341 flow. Second operand 9 states and 110 transitions. [2024-06-28 00:18:14,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 185 transitions, 2814 flow [2024-06-28 00:18:14,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 185 transitions, 2623 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:14,590 INFO L231 Difference]: Finished difference. Result has 194 places, 154 transitions, 2063 flow [2024-06-28 00:18:14,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2063, PETRI_PLACES=194, PETRI_TRANSITIONS=154} [2024-06-28 00:18:14,591 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 166 predicate places. [2024-06-28 00:18:14,591 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 154 transitions, 2063 flow [2024-06-28 00:18:14,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:14,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:14,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:18:14,591 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:14,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash -29525553, now seen corresponding path program 2 times [2024-06-28 00:18:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:14,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138775012] [2024-06-28 00:18:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:15,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138775012] [2024-06-28 00:18:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138775012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:15,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:15,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:15,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919046682] [2024-06-28 00:18:15,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:15,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:15,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:15,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:15,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 154 transitions, 2063 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:15,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:15,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:15,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:16,216 INFO L124 PetriNetUnfolderBase]: 402/760 cut-off events. [2024-06-28 00:18:16,216 INFO L125 PetriNetUnfolderBase]: For 39013/39013 co-relation queries the response was YES. [2024-06-28 00:18:16,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 760 events. 402/760 cut-off events. For 39013/39013 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3717 event pairs, 82 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 5873. Up to 585 conditions per place. [2024-06-28 00:18:16,222 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 107 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-06-28 00:18:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 170 transitions, 2556 flow [2024-06-28 00:18:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 00:18:16,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-28 00:18:16,224 INFO L175 Difference]: Start difference. First operand has 194 places, 154 transitions, 2063 flow. Second operand 8 states and 97 transitions. [2024-06-28 00:18:16,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 170 transitions, 2556 flow [2024-06-28 00:18:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 170 transitions, 2386 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:18:16,308 INFO L231 Difference]: Finished difference. Result has 185 places, 156 transitions, 2064 flow [2024-06-28 00:18:16,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2064, PETRI_PLACES=185, PETRI_TRANSITIONS=156} [2024-06-28 00:18:16,308 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 157 predicate places. [2024-06-28 00:18:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 156 transitions, 2064 flow [2024-06-28 00:18:16,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:16,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:16,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:18:16,309 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:16,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash 211878251, now seen corresponding path program 3 times [2024-06-28 00:18:16,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:16,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405099819] [2024-06-28 00:18:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:17,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:17,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405099819] [2024-06-28 00:18:17,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405099819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:17,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:17,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:17,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30728778] [2024-06-28 00:18:17,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:17,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:17,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:17,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:17,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:17,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 156 transitions, 2064 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:17,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:17,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:17,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:17,840 INFO L124 PetriNetUnfolderBase]: 399/755 cut-off events. [2024-06-28 00:18:17,841 INFO L125 PetriNetUnfolderBase]: For 33560/33560 co-relation queries the response was YES. [2024-06-28 00:18:17,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 755 events. 399/755 cut-off events. For 33560/33560 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3697 event pairs, 85 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 5592. Up to 581 conditions per place. [2024-06-28 00:18:17,850 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 115 selfloop transitions, 52 changer transitions 0/169 dead transitions. [2024-06-28 00:18:17,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 169 transitions, 2512 flow [2024-06-28 00:18:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:17,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 00:18:17,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-28 00:18:17,864 INFO L175 Difference]: Start difference. First operand has 185 places, 156 transitions, 2064 flow. Second operand 9 states and 105 transitions. [2024-06-28 00:18:17,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 169 transitions, 2512 flow [2024-06-28 00:18:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 169 transitions, 2411 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:17,960 INFO L231 Difference]: Finished difference. Result has 189 places, 156 transitions, 2073 flow [2024-06-28 00:18:17,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2073, PETRI_PLACES=189, PETRI_TRANSITIONS=156} [2024-06-28 00:18:17,960 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-28 00:18:17,960 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 156 transitions, 2073 flow [2024-06-28 00:18:17,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:17,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:17,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:17,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:18:17,961 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:17,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -866371515, now seen corresponding path program 5 times [2024-06-28 00:18:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:17,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76769576] [2024-06-28 00:18:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:17,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:19,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:19,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76769576] [2024-06-28 00:18:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76769576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:19,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:19,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:19,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631057142] [2024-06-28 00:18:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:19,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:19,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:19,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:19,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 156 transitions, 2073 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:19,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:19,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:19,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:19,578 INFO L124 PetriNetUnfolderBase]: 396/750 cut-off events. [2024-06-28 00:18:19,578 INFO L125 PetriNetUnfolderBase]: For 34290/34290 co-relation queries the response was YES. [2024-06-28 00:18:19,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5602 conditions, 750 events. 396/750 cut-off events. For 34290/34290 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3662 event pairs, 97 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 5513. Up to 675 conditions per place. [2024-06-28 00:18:19,583 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 134 selfloop transitions, 32 changer transitions 0/168 dead transitions. [2024-06-28 00:18:19,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 168 transitions, 2435 flow [2024-06-28 00:18:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 00:18:19,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 00:18:19,584 INFO L175 Difference]: Start difference. First operand has 189 places, 156 transitions, 2073 flow. Second operand 9 states and 96 transitions. [2024-06-28 00:18:19,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 168 transitions, 2435 flow [2024-06-28 00:18:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 168 transitions, 2268 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:19,680 INFO L231 Difference]: Finished difference. Result has 190 places, 156 transitions, 1974 flow [2024-06-28 00:18:19,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1974, PETRI_PLACES=190, PETRI_TRANSITIONS=156} [2024-06-28 00:18:19,681 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 162 predicate places. [2024-06-28 00:18:19,681 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 156 transitions, 1974 flow [2024-06-28 00:18:19,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:19,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:19,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:19,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:18:19,682 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1392778733, now seen corresponding path program 4 times [2024-06-28 00:18:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:19,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360915694] [2024-06-28 00:18:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360915694] [2024-06-28 00:18:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360915694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:21,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:21,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734842513] [2024-06-28 00:18:21,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:21,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:21,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:21,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:21,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 156 transitions, 1974 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:21,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:21,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:21,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:21,599 INFO L124 PetriNetUnfolderBase]: 399/755 cut-off events. [2024-06-28 00:18:21,599 INFO L125 PetriNetUnfolderBase]: For 33076/33076 co-relation queries the response was YES. [2024-06-28 00:18:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 755 events. 399/755 cut-off events. For 33076/33076 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3693 event pairs, 97 based on Foata normal form. 1/755 useless extension candidates. Maximal degree in co-relation 5454. Up to 668 conditions per place. [2024-06-28 00:18:21,604 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 131 selfloop transitions, 39 changer transitions 0/172 dead transitions. [2024-06-28 00:18:21,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 172 transitions, 2457 flow [2024-06-28 00:18:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 00:18:21,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605015673981191 [2024-06-28 00:18:21,606 INFO L175 Difference]: Start difference. First operand has 190 places, 156 transitions, 1974 flow. Second operand 11 states and 115 transitions. [2024-06-28 00:18:21,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 172 transitions, 2457 flow [2024-06-28 00:18:21,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 172 transitions, 2330 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:21,701 INFO L231 Difference]: Finished difference. Result has 192 places, 158 transitions, 1959 flow [2024-06-28 00:18:21,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1959, PETRI_PLACES=192, PETRI_TRANSITIONS=158} [2024-06-28 00:18:21,701 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 00:18:21,702 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 158 transitions, 1959 flow [2024-06-28 00:18:21,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:21,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:21,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:21,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:18:21,702 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:21,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1392958223, now seen corresponding path program 5 times [2024-06-28 00:18:21,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76552585] [2024-06-28 00:18:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:21,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76552585] [2024-06-28 00:18:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76552585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:22,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:22,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:22,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073378728] [2024-06-28 00:18:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:22,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:22,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:22,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:22,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 158 transitions, 1959 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:22,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:22,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:23,301 INFO L124 PetriNetUnfolderBase]: 396/750 cut-off events. [2024-06-28 00:18:23,301 INFO L125 PetriNetUnfolderBase]: For 33378/33378 co-relation queries the response was YES. [2024-06-28 00:18:23,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 750 events. 396/750 cut-off events. For 33378/33378 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3667 event pairs, 97 based on Foata normal form. 1/750 useless extension candidates. Maximal degree in co-relation 5349. Up to 664 conditions per place. [2024-06-28 00:18:23,307 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 129 selfloop transitions, 38 changer transitions 0/169 dead transitions. [2024-06-28 00:18:23,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 169 transitions, 2321 flow [2024-06-28 00:18:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 00:18:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-28 00:18:23,308 INFO L175 Difference]: Start difference. First operand has 192 places, 158 transitions, 1959 flow. Second operand 9 states and 100 transitions. [2024-06-28 00:18:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 169 transitions, 2321 flow [2024-06-28 00:18:23,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 169 transitions, 2174 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:18:23,402 INFO L231 Difference]: Finished difference. Result has 189 places, 158 transitions, 1894 flow [2024-06-28 00:18:23,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1894, PETRI_PLACES=189, PETRI_TRANSITIONS=158} [2024-06-28 00:18:23,402 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-28 00:18:23,402 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 158 transitions, 1894 flow [2024-06-28 00:18:23,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:23,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:23,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:18:23,403 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:23,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1392963183, now seen corresponding path program 10 times [2024-06-28 00:18:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:23,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677503573] [2024-06-28 00:18:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677503573] [2024-06-28 00:18:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677503573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:24,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:24,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610556323] [2024-06-28 00:18:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:24,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:24,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:24,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 158 transitions, 1894 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:24,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:24,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:24,808 INFO L124 PetriNetUnfolderBase]: 408/778 cut-off events. [2024-06-28 00:18:24,808 INFO L125 PetriNetUnfolderBase]: For 39349/39349 co-relation queries the response was YES. [2024-06-28 00:18:24,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 778 events. 408/778 cut-off events. For 39349/39349 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3897 event pairs, 85 based on Foata normal form. 22/799 useless extension candidates. Maximal degree in co-relation 4903. Up to 567 conditions per place. [2024-06-28 00:18:24,814 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 125 selfloop transitions, 39 changer transitions 16/182 dead transitions. [2024-06-28 00:18:24,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 182 transitions, 2416 flow [2024-06-28 00:18:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 00:18:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329501915708812 [2024-06-28 00:18:24,815 INFO L175 Difference]: Start difference. First operand has 189 places, 158 transitions, 1894 flow. Second operand 9 states and 113 transitions. [2024-06-28 00:18:24,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 182 transitions, 2416 flow [2024-06-28 00:18:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 182 transitions, 2331 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:24,877 INFO L231 Difference]: Finished difference. Result has 191 places, 155 transitions, 1880 flow [2024-06-28 00:18:24,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1880, PETRI_PLACES=191, PETRI_TRANSITIONS=155} [2024-06-28 00:18:24,878 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 163 predicate places. [2024-06-28 00:18:24,878 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 155 transitions, 1880 flow [2024-06-28 00:18:24,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:24,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:24,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:24,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:18:24,879 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:24,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:24,879 INFO L85 PathProgramCache]: Analyzing trace with hash 169178349, now seen corresponding path program 1 times [2024-06-28 00:18:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:24,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328025224] [2024-06-28 00:18:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328025224] [2024-06-28 00:18:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328025224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:26,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239969393] [2024-06-28 00:18:26,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:26,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:26,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:26,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:26,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 155 transitions, 1880 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:26,517 INFO L124 PetriNetUnfolderBase]: 390/757 cut-off events. [2024-06-28 00:18:26,517 INFO L125 PetriNetUnfolderBase]: For 35722/35722 co-relation queries the response was YES. [2024-06-28 00:18:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 757 events. 390/757 cut-off events. For 35722/35722 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3808 event pairs, 116 based on Foata normal form. 8/764 useless extension candidates. Maximal degree in co-relation 5121. Up to 512 conditions per place. [2024-06-28 00:18:26,523 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 136 selfloop transitions, 31 changer transitions 11/180 dead transitions. [2024-06-28 00:18:26,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 180 transitions, 2430 flow [2024-06-28 00:18:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:18:26,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 00:18:26,524 INFO L175 Difference]: Start difference. First operand has 191 places, 155 transitions, 1880 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:18:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 180 transitions, 2430 flow [2024-06-28 00:18:26,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 180 transitions, 2298 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:26,600 INFO L231 Difference]: Finished difference. Result has 193 places, 152 transitions, 1778 flow [2024-06-28 00:18:26,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1778, PETRI_PLACES=193, PETRI_TRANSITIONS=152} [2024-06-28 00:18:26,601 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 165 predicate places. [2024-06-28 00:18:26,601 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 152 transitions, 1778 flow [2024-06-28 00:18:26,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:26,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:26,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:26,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:18:26,602 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:26,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:26,602 INFO L85 PathProgramCache]: Analyzing trace with hash 171056019, now seen corresponding path program 2 times [2024-06-28 00:18:26,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:26,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533636617] [2024-06-28 00:18:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:26,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:27,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:27,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533636617] [2024-06-28 00:18:27,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533636617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:27,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28589377] [2024-06-28 00:18:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:27,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:27,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:27,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 152 transitions, 1778 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:27,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:27,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:27,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:28,230 INFO L124 PetriNetUnfolderBase]: 353/684 cut-off events. [2024-06-28 00:18:28,230 INFO L125 PetriNetUnfolderBase]: For 30072/30072 co-relation queries the response was YES. [2024-06-28 00:18:28,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 684 events. 353/684 cut-off events. For 30072/30072 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3353 event pairs, 107 based on Foata normal form. 10/693 useless extension candidates. Maximal degree in co-relation 4368. Up to 489 conditions per place. [2024-06-28 00:18:28,235 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 108 selfloop transitions, 50 changer transitions 11/171 dead transitions. [2024-06-28 00:18:28,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 171 transitions, 2204 flow [2024-06-28 00:18:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 00:18:28,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-28 00:18:28,249 INFO L175 Difference]: Start difference. First operand has 193 places, 152 transitions, 1778 flow. Second operand 10 states and 113 transitions. [2024-06-28 00:18:28,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 171 transitions, 2204 flow [2024-06-28 00:18:28,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 171 transitions, 2130 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:28,303 INFO L231 Difference]: Finished difference. Result has 192 places, 149 transitions, 1780 flow [2024-06-28 00:18:28,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1780, PETRI_PLACES=192, PETRI_TRANSITIONS=149} [2024-06-28 00:18:28,304 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 00:18:28,304 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 149 transitions, 1780 flow [2024-06-28 00:18:28,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:28,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:28,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:28,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:18:28,305 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:28,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 171052299, now seen corresponding path program 3 times [2024-06-28 00:18:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:28,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257978545] [2024-06-28 00:18:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:28,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257978545] [2024-06-28 00:18:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257978545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:29,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:29,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:29,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761465947] [2024-06-28 00:18:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:29,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:29,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:29,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:29,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 149 transitions, 1780 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:29,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:29,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:29,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:29,996 INFO L124 PetriNetUnfolderBase]: 341/664 cut-off events. [2024-06-28 00:18:29,996 INFO L125 PetriNetUnfolderBase]: For 27973/27973 co-relation queries the response was YES. [2024-06-28 00:18:29,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 664 events. 341/664 cut-off events. For 27973/27973 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3225 event pairs, 103 based on Foata normal form. 8/671 useless extension candidates. Maximal degree in co-relation 4260. Up to 528 conditions per place. [2024-06-28 00:18:30,001 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 125 selfloop transitions, 27 changer transitions 13/167 dead transitions. [2024-06-28 00:18:30,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 167 transitions, 2178 flow [2024-06-28 00:18:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 00:18:30,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:18:30,002 INFO L175 Difference]: Start difference. First operand has 192 places, 149 transitions, 1780 flow. Second operand 10 states and 110 transitions. [2024-06-28 00:18:30,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 167 transitions, 2178 flow [2024-06-28 00:18:30,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 167 transitions, 2058 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:30,055 INFO L231 Difference]: Finished difference. Result has 190 places, 145 transitions, 1662 flow [2024-06-28 00:18:30,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1662, PETRI_PLACES=190, PETRI_TRANSITIONS=145} [2024-06-28 00:18:30,056 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 162 predicate places. [2024-06-28 00:18:30,056 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 145 transitions, 1662 flow [2024-06-28 00:18:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:30,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:30,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:18:30,057 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:30,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 257897931, now seen corresponding path program 1 times [2024-06-28 00:18:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:30,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317003445] [2024-06-28 00:18:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:31,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:31,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317003445] [2024-06-28 00:18:31,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317003445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:31,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:31,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952443791] [2024-06-28 00:18:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:31,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:31,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:31,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:31,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 145 transitions, 1662 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:31,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:31,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:31,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:31,615 INFO L124 PetriNetUnfolderBase]: 324/626 cut-off events. [2024-06-28 00:18:31,615 INFO L125 PetriNetUnfolderBase]: For 22960/22960 co-relation queries the response was YES. [2024-06-28 00:18:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 626 events. 324/626 cut-off events. For 22960/22960 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2994 event pairs, 99 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4022. Up to 505 conditions per place. [2024-06-28 00:18:31,620 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 114 selfloop transitions, 41 changer transitions 0/157 dead transitions. [2024-06-28 00:18:31,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 157 transitions, 2014 flow [2024-06-28 00:18:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:31,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:18:31,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-28 00:18:31,621 INFO L175 Difference]: Start difference. First operand has 190 places, 145 transitions, 1662 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:18:31,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 157 transitions, 2014 flow [2024-06-28 00:18:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 157 transitions, 1927 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:31,684 INFO L231 Difference]: Finished difference. Result has 186 places, 146 transitions, 1677 flow [2024-06-28 00:18:31,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=186, PETRI_TRANSITIONS=146} [2024-06-28 00:18:31,685 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 158 predicate places. [2024-06-28 00:18:31,685 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 146 transitions, 1677 flow [2024-06-28 00:18:31,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:31,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:31,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:31,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:18:31,685 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:31,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -463043095, now seen corresponding path program 2 times [2024-06-28 00:18:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640807321] [2024-06-28 00:18:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:31,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640807321] [2024-06-28 00:18:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640807321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765943263] [2024-06-28 00:18:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:33,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:33,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 146 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:33,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:33,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:33,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:33,406 INFO L124 PetriNetUnfolderBase]: 328/634 cut-off events. [2024-06-28 00:18:33,406 INFO L125 PetriNetUnfolderBase]: For 23159/23159 co-relation queries the response was YES. [2024-06-28 00:18:33,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 634 events. 328/634 cut-off events. For 23159/23159 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3053 event pairs, 99 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 4033. Up to 555 conditions per place. [2024-06-28 00:18:33,411 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 125 selfloop transitions, 31 changer transitions 0/158 dead transitions. [2024-06-28 00:18:33,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 158 transitions, 2037 flow [2024-06-28 00:18:33,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 00:18:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-28 00:18:33,412 INFO L175 Difference]: Start difference. First operand has 186 places, 146 transitions, 1677 flow. Second operand 10 states and 103 transitions. [2024-06-28 00:18:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 158 transitions, 2037 flow [2024-06-28 00:18:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 158 transitions, 1945 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:33,466 INFO L231 Difference]: Finished difference. Result has 188 places, 147 transitions, 1669 flow [2024-06-28 00:18:33,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1669, PETRI_PLACES=188, PETRI_TRANSITIONS=147} [2024-06-28 00:18:33,467 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 160 predicate places. [2024-06-28 00:18:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 147 transitions, 1669 flow [2024-06-28 00:18:33,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:33,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:33,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:18:33,468 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:33,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash -457680715, now seen corresponding path program 3 times [2024-06-28 00:18:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029627880] [2024-06-28 00:18:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029627880] [2024-06-28 00:18:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029627880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:34,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757864687] [2024-06-28 00:18:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:34,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:34,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:34,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 147 transitions, 1669 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:34,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:34,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:35,047 INFO L124 PetriNetUnfolderBase]: 332/642 cut-off events. [2024-06-28 00:18:35,047 INFO L125 PetriNetUnfolderBase]: For 24107/24107 co-relation queries the response was YES. [2024-06-28 00:18:35,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 642 events. 332/642 cut-off events. For 24107/24107 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3099 event pairs, 103 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4071. Up to 561 conditions per place. [2024-06-28 00:18:35,081 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 127 selfloop transitions, 32 changer transitions 0/161 dead transitions. [2024-06-28 00:18:35,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 161 transitions, 2041 flow [2024-06-28 00:18:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:18:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:18:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 00:18:35,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:18:35,083 INFO L175 Difference]: Start difference. First operand has 188 places, 147 transitions, 1669 flow. Second operand 12 states and 116 transitions. [2024-06-28 00:18:35,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 161 transitions, 2041 flow [2024-06-28 00:18:35,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 161 transitions, 1967 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:35,146 INFO L231 Difference]: Finished difference. Result has 192 places, 148 transitions, 1684 flow [2024-06-28 00:18:35,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1684, PETRI_PLACES=192, PETRI_TRANSITIONS=148} [2024-06-28 00:18:35,146 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 00:18:35,146 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 148 transitions, 1684 flow [2024-06-28 00:18:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:35,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:35,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:18:35,147 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:35,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash -457471465, now seen corresponding path program 4 times [2024-06-28 00:18:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920646423] [2024-06-28 00:18:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:36,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920646423] [2024-06-28 00:18:36,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920646423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:36,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706087517] [2024-06-28 00:18:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:36,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:36,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:36,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 148 transitions, 1684 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:36,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:36,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:36,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:37,094 INFO L124 PetriNetUnfolderBase]: 336/650 cut-off events. [2024-06-28 00:18:37,094 INFO L125 PetriNetUnfolderBase]: For 25235/25235 co-relation queries the response was YES. [2024-06-28 00:18:37,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 650 events. 336/650 cut-off events. For 25235/25235 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3152 event pairs, 101 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4131. Up to 549 conditions per place. [2024-06-28 00:18:37,099 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 125 selfloop transitions, 35 changer transitions 0/162 dead transitions. [2024-06-28 00:18:37,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 162 transitions, 2054 flow [2024-06-28 00:18:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:37,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 00:18:37,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34796238244514105 [2024-06-28 00:18:37,100 INFO L175 Difference]: Start difference. First operand has 192 places, 148 transitions, 1684 flow. Second operand 11 states and 111 transitions. [2024-06-28 00:18:37,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 162 transitions, 2054 flow [2024-06-28 00:18:37,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 162 transitions, 1977 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 00:18:37,187 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1703 flow [2024-06-28 00:18:37,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1703, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2024-06-28 00:18:37,187 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 165 predicate places. [2024-06-28 00:18:37,187 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1703 flow [2024-06-28 00:18:37,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:37,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:37,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:37,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:18:37,188 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:37,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1850561623, now seen corresponding path program 5 times [2024-06-28 00:18:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187731147] [2024-06-28 00:18:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187731147] [2024-06-28 00:18:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187731147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553828758] [2024-06-28 00:18:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:38,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:38,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:38,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:38,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:38,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:38,918 INFO L124 PetriNetUnfolderBase]: 340/658 cut-off events. [2024-06-28 00:18:38,918 INFO L125 PetriNetUnfolderBase]: For 26397/26397 co-relation queries the response was YES. [2024-06-28 00:18:38,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4293 conditions, 658 events. 340/658 cut-off events. For 26397/26397 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3198 event pairs, 105 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4203. Up to 573 conditions per place. [2024-06-28 00:18:38,923 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 133 selfloop transitions, 27 changer transitions 0/162 dead transitions. [2024-06-28 00:18:38,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 162 transitions, 2089 flow [2024-06-28 00:18:38,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 00:18:38,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015325670498083 [2024-06-28 00:18:38,924 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1703 flow. Second operand 9 states and 94 transitions. [2024-06-28 00:18:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 162 transitions, 2089 flow [2024-06-28 00:18:38,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 162 transitions, 2003 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:38,998 INFO L231 Difference]: Finished difference. Result has 193 places, 150 transitions, 1699 flow [2024-06-28 00:18:38,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1699, PETRI_PLACES=193, PETRI_TRANSITIONS=150} [2024-06-28 00:18:38,999 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 165 predicate places. [2024-06-28 00:18:38,999 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 150 transitions, 1699 flow [2024-06-28 00:18:38,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:38,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:38,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:38,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:18:39,000 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:39,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1850554183, now seen corresponding path program 6 times [2024-06-28 00:18:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:39,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513864661] [2024-06-28 00:18:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:40,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513864661] [2024-06-28 00:18:40,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513864661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:40,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:40,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:40,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275472759] [2024-06-28 00:18:40,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:40,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:40,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:40,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 150 transitions, 1699 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:40,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:40,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:40,764 INFO L124 PetriNetUnfolderBase]: 351/679 cut-off events. [2024-06-28 00:18:40,764 INFO L125 PetriNetUnfolderBase]: For 29937/29937 co-relation queries the response was YES. [2024-06-28 00:18:40,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 679 events. 351/679 cut-off events. For 29937/29937 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3348 event pairs, 104 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4424. Up to 571 conditions per place. [2024-06-28 00:18:40,770 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 135 selfloop transitions, 28 changer transitions 0/165 dead transitions. [2024-06-28 00:18:40,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 165 transitions, 2206 flow [2024-06-28 00:18:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 00:18:40,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 00:18:40,771 INFO L175 Difference]: Start difference. First operand has 193 places, 150 transitions, 1699 flow. Second operand 9 states and 95 transitions. [2024-06-28 00:18:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 165 transitions, 2206 flow [2024-06-28 00:18:40,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 165 transitions, 2134 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:40,857 INFO L231 Difference]: Finished difference. Result has 195 places, 152 transitions, 1737 flow [2024-06-28 00:18:40,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1737, PETRI_PLACES=195, PETRI_TRANSITIONS=152} [2024-06-28 00:18:40,858 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 167 predicate places. [2024-06-28 00:18:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 152 transitions, 1737 flow [2024-06-28 00:18:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:40,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:40,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:40,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:18:40,859 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:40,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1856125813, now seen corresponding path program 7 times [2024-06-28 00:18:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68386504] [2024-06-28 00:18:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:42,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68386504] [2024-06-28 00:18:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68386504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625833445] [2024-06-28 00:18:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:42,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:42,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:42,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 152 transitions, 1737 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:42,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:42,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:42,553 INFO L124 PetriNetUnfolderBase]: 348/674 cut-off events. [2024-06-28 00:18:42,554 INFO L125 PetriNetUnfolderBase]: For 28824/28824 co-relation queries the response was YES. [2024-06-28 00:18:42,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 674 events. 348/674 cut-off events. For 28824/28824 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3309 event pairs, 105 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4302. Up to 589 conditions per place. [2024-06-28 00:18:42,559 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 130 selfloop transitions, 31 changer transitions 0/163 dead transitions. [2024-06-28 00:18:42,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 163 transitions, 2092 flow [2024-06-28 00:18:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:18:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:18:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 00:18:42,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-28 00:18:42,560 INFO L175 Difference]: Start difference. First operand has 195 places, 152 transitions, 1737 flow. Second operand 8 states and 90 transitions. [2024-06-28 00:18:42,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 163 transitions, 2092 flow [2024-06-28 00:18:42,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 163 transitions, 2014 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:42,658 INFO L231 Difference]: Finished difference. Result has 197 places, 152 transitions, 1725 flow [2024-06-28 00:18:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1725, PETRI_PLACES=197, PETRI_TRANSITIONS=152} [2024-06-28 00:18:42,658 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 00:18:42,658 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 152 transitions, 1725 flow [2024-06-28 00:18:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:42,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:18:42,659 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 919406731, now seen corresponding path program 8 times [2024-06-28 00:18:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939956693] [2024-06-28 00:18:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:43,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939956693] [2024-06-28 00:18:43,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939956693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:43,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:43,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718094907] [2024-06-28 00:18:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:43,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:43,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:44,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:44,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 152 transitions, 1725 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:44,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:44,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:44,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:44,345 INFO L124 PetriNetUnfolderBase]: 352/681 cut-off events. [2024-06-28 00:18:44,345 INFO L125 PetriNetUnfolderBase]: For 29707/29707 co-relation queries the response was YES. [2024-06-28 00:18:44,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 681 events. 352/681 cut-off events. For 29707/29707 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3355 event pairs, 104 based on Foata normal form. 2/682 useless extension candidates. Maximal degree in co-relation 4346. Up to 639 conditions per place. [2024-06-28 00:18:44,351 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 144 selfloop transitions, 17 changer transitions 0/163 dead transitions. [2024-06-28 00:18:44,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 163 transitions, 2106 flow [2024-06-28 00:18:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 00:18:44,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 00:18:44,352 INFO L175 Difference]: Start difference. First operand has 197 places, 152 transitions, 1725 flow. Second operand 9 states and 87 transitions. [2024-06-28 00:18:44,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 163 transitions, 2106 flow [2024-06-28 00:18:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 163 transitions, 2044 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:44,430 INFO L231 Difference]: Finished difference. Result has 200 places, 153 transitions, 1729 flow [2024-06-28 00:18:44,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1729, PETRI_PLACES=200, PETRI_TRANSITIONS=153} [2024-06-28 00:18:44,431 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-28 00:18:44,431 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 153 transitions, 1729 flow [2024-06-28 00:18:44,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:44,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:44,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:44,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:18:44,431 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:44,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1856275915, now seen corresponding path program 4 times [2024-06-28 00:18:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:44,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784807113] [2024-06-28 00:18:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:45,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784807113] [2024-06-28 00:18:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784807113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582823983] [2024-06-28 00:18:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:45,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:45,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:45,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:45,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 153 transitions, 1729 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:45,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:45,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:45,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:46,227 INFO L124 PetriNetUnfolderBase]: 361/705 cut-off events. [2024-06-28 00:18:46,227 INFO L125 PetriNetUnfolderBase]: For 37997/37997 co-relation queries the response was YES. [2024-06-28 00:18:46,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 705 events. 361/705 cut-off events. For 37997/37997 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3523 event pairs, 108 based on Foata normal form. 10/714 useless extension candidates. Maximal degree in co-relation 4322. Up to 594 conditions per place. [2024-06-28 00:18:46,233 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 134 selfloop transitions, 22 changer transitions 11/169 dead transitions. [2024-06-28 00:18:46,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 169 transitions, 2131 flow [2024-06-28 00:18:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 00:18:46,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-06-28 00:18:46,234 INFO L175 Difference]: Start difference. First operand has 200 places, 153 transitions, 1729 flow. Second operand 10 states and 106 transitions. [2024-06-28 00:18:46,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 169 transitions, 2131 flow [2024-06-28 00:18:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 169 transitions, 2073 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:46,317 INFO L231 Difference]: Finished difference. Result has 203 places, 150 transitions, 1693 flow [2024-06-28 00:18:46,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1693, PETRI_PLACES=203, PETRI_TRANSITIONS=150} [2024-06-28 00:18:46,318 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 175 predicate places. [2024-06-28 00:18:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 150 transitions, 1693 flow [2024-06-28 00:18:46,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:46,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:46,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:46,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:18:46,319 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:46,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1778494923, now seen corresponding path program 5 times [2024-06-28 00:18:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973298001] [2024-06-28 00:18:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:46,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973298001] [2024-06-28 00:18:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973298001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:47,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:47,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109185708] [2024-06-28 00:18:47,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:47,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:47,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 150 transitions, 1693 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:47,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:47,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:47,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:48,059 INFO L124 PetriNetUnfolderBase]: 349/685 cut-off events. [2024-06-28 00:18:48,060 INFO L125 PetriNetUnfolderBase]: For 36643/36643 co-relation queries the response was YES. [2024-06-28 00:18:48,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4309 conditions, 685 events. 349/685 cut-off events. For 36643/36643 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3409 event pairs, 100 based on Foata normal form. 8/692 useless extension candidates. Maximal degree in co-relation 4215. Up to 508 conditions per place. [2024-06-28 00:18:48,065 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 129 selfloop transitions, 30 changer transitions 8/169 dead transitions. [2024-06-28 00:18:48,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 169 transitions, 2201 flow [2024-06-28 00:18:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:48,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:18:48,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 00:18:48,066 INFO L175 Difference]: Start difference. First operand has 203 places, 150 transitions, 1693 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:18:48,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 169 transitions, 2201 flow [2024-06-28 00:18:48,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 169 transitions, 2149 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:48,171 INFO L231 Difference]: Finished difference. Result has 200 places, 147 transitions, 1669 flow [2024-06-28 00:18:48,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1669, PETRI_PLACES=200, PETRI_TRANSITIONS=147} [2024-06-28 00:18:48,172 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-28 00:18:48,172 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 147 transitions, 1669 flow [2024-06-28 00:18:48,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:48,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:48,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:48,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:18:48,173 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:48,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1571680221, now seen corresponding path program 9 times [2024-06-28 00:18:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139235927] [2024-06-28 00:18:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139235927] [2024-06-28 00:18:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139235927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:49,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947128161] [2024-06-28 00:18:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:49,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:49,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:49,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:49,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 147 transitions, 1669 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:49,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:49,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:49,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:49,676 INFO L124 PetriNetUnfolderBase]: 341/664 cut-off events. [2024-06-28 00:18:49,676 INFO L125 PetriNetUnfolderBase]: For 31264/31264 co-relation queries the response was YES. [2024-06-28 00:18:49,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 664 events. 341/664 cut-off events. For 31264/31264 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3244 event pairs, 98 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 4318. Up to 591 conditions per place. [2024-06-28 00:18:49,681 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 140 selfloop transitions, 20 changer transitions 0/162 dead transitions. [2024-06-28 00:18:49,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 162 transitions, 2182 flow [2024-06-28 00:18:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 00:18:49,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-28 00:18:49,683 INFO L175 Difference]: Start difference. First operand has 200 places, 147 transitions, 1669 flow. Second operand 9 states and 91 transitions. [2024-06-28 00:18:49,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 162 transitions, 2182 flow [2024-06-28 00:18:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 162 transitions, 2112 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:49,760 INFO L231 Difference]: Finished difference. Result has 197 places, 149 transitions, 1705 flow [2024-06-28 00:18:49,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1705, PETRI_PLACES=197, PETRI_TRANSITIONS=149} [2024-06-28 00:18:49,760 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 00:18:49,760 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 149 transitions, 1705 flow [2024-06-28 00:18:49,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:49,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:49,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:49,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:18:49,761 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:49,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash -88538333, now seen corresponding path program 10 times [2024-06-28 00:18:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551546429] [2024-06-28 00:18:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551546429] [2024-06-28 00:18:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551546429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708176925] [2024-06-28 00:18:51,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:51,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:51,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 149 transitions, 1705 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:51,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:51,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:51,414 INFO L124 PetriNetUnfolderBase]: 338/659 cut-off events. [2024-06-28 00:18:51,414 INFO L125 PetriNetUnfolderBase]: For 27832/27832 co-relation queries the response was YES. [2024-06-28 00:18:51,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 659 events. 338/659 cut-off events. For 27832/27832 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3226 event pairs, 99 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4161. Up to 605 conditions per place. [2024-06-28 00:18:51,419 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 137 selfloop transitions, 21 changer transitions 0/160 dead transitions. [2024-06-28 00:18:51,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 160 transitions, 2056 flow [2024-06-28 00:18:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 00:18:51,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34099616858237547 [2024-06-28 00:18:51,421 INFO L175 Difference]: Start difference. First operand has 197 places, 149 transitions, 1705 flow. Second operand 9 states and 89 transitions. [2024-06-28 00:18:51,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 160 transitions, 2056 flow [2024-06-28 00:18:51,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 160 transitions, 1976 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:51,498 INFO L231 Difference]: Finished difference. Result has 200 places, 149 transitions, 1673 flow [2024-06-28 00:18:51,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1673, PETRI_PLACES=200, PETRI_TRANSITIONS=149} [2024-06-28 00:18:51,499 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-28 00:18:51,499 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 149 transitions, 1673 flow [2024-06-28 00:18:51,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:51,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:51,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:18:51,500 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:51,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:51,500 INFO L85 PathProgramCache]: Analyzing trace with hash 988499705, now seen corresponding path program 11 times [2024-06-28 00:18:51,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:51,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632814780] [2024-06-28 00:18:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:52,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632814780] [2024-06-28 00:18:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632814780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:52,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:52,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:52,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429996796] [2024-06-28 00:18:52,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:52,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:52,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:52,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:52,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:18:52,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 149 transitions, 1673 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:52,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:52,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:18:52,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:53,054 INFO L124 PetriNetUnfolderBase]: 342/667 cut-off events. [2024-06-28 00:18:53,055 INFO L125 PetriNetUnfolderBase]: For 28636/28636 co-relation queries the response was YES. [2024-06-28 00:18:53,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4279 conditions, 667 events. 342/667 cut-off events. For 28636/28636 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3274 event pairs, 97 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4187. Up to 623 conditions per place. [2024-06-28 00:18:53,060 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 145 selfloop transitions, 14 changer transitions 0/161 dead transitions. [2024-06-28 00:18:53,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 161 transitions, 2045 flow [2024-06-28 00:18:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2024-06-28 00:18:53,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3137931034482759 [2024-06-28 00:18:53,061 INFO L175 Difference]: Start difference. First operand has 200 places, 149 transitions, 1673 flow. Second operand 10 states and 91 transitions. [2024-06-28 00:18:53,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 161 transitions, 2045 flow [2024-06-28 00:18:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 161 transitions, 2000 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:53,147 INFO L231 Difference]: Finished difference. Result has 202 places, 150 transitions, 1692 flow [2024-06-28 00:18:53,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1628, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=202, PETRI_TRANSITIONS=150} [2024-06-28 00:18:53,147 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 174 predicate places. [2024-06-28 00:18:53,147 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 150 transitions, 1692 flow [2024-06-28 00:18:53,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:53,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:53,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:53,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:18:53,148 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:53,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1004010773, now seen corresponding path program 6 times [2024-06-28 00:18:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701926630] [2024-06-28 00:18:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:53,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:54,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701926630] [2024-06-28 00:18:54,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701926630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:54,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:54,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652565667] [2024-06-28 00:18:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:54,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:54,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:54,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:54,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 150 transitions, 1692 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:54,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:54,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:54,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:54,892 INFO L124 PetriNetUnfolderBase]: 373/736 cut-off events. [2024-06-28 00:18:54,892 INFO L125 PetriNetUnfolderBase]: For 44553/44553 co-relation queries the response was YES. [2024-06-28 00:18:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 736 events. 373/736 cut-off events. For 44553/44553 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3721 event pairs, 66 based on Foata normal form. 8/743 useless extension candidates. Maximal degree in co-relation 4705. Up to 221 conditions per place. [2024-06-28 00:18:54,898 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 83 selfloop transitions, 75 changer transitions 16/176 dead transitions. [2024-06-28 00:18:54,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 176 transitions, 2237 flow [2024-06-28 00:18:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-28 00:18:54,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413793103448276 [2024-06-28 00:18:54,900 INFO L175 Difference]: Start difference. First operand has 202 places, 150 transitions, 1692 flow. Second operand 10 states and 128 transitions. [2024-06-28 00:18:54,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 176 transitions, 2237 flow [2024-06-28 00:18:55,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 176 transitions, 2183 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:55,005 INFO L231 Difference]: Finished difference. Result has 204 places, 144 transitions, 1741 flow [2024-06-28 00:18:55,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1741, PETRI_PLACES=204, PETRI_TRANSITIONS=144} [2024-06-28 00:18:55,005 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 176 predicate places. [2024-06-28 00:18:55,005 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 144 transitions, 1741 flow [2024-06-28 00:18:55,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:55,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:55,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:18:55,006 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:55,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1002133103, now seen corresponding path program 7 times [2024-06-28 00:18:55,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:55,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217381540] [2024-06-28 00:18:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:55,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:56,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:56,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217381540] [2024-06-28 00:18:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217381540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:56,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:56,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:56,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367416648] [2024-06-28 00:18:56,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:56,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:56,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:56,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:56,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:56,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 144 transitions, 1741 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:56,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:56,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:56,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:56,723 INFO L124 PetriNetUnfolderBase]: 349/690 cut-off events. [2024-06-28 00:18:56,723 INFO L125 PetriNetUnfolderBase]: For 48774/48774 co-relation queries the response was YES. [2024-06-28 00:18:56,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 690 events. 349/690 cut-off events. For 48774/48774 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3428 event pairs, 68 based on Foata normal form. 10/699 useless extension candidates. Maximal degree in co-relation 4646. Up to 392 conditions per place. [2024-06-28 00:18:56,729 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 75 selfloop transitions, 74 changer transitions 14/165 dead transitions. [2024-06-28 00:18:56,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 165 transitions, 2160 flow [2024-06-28 00:18:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:56,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 00:18:56,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-06-28 00:18:56,730 INFO L175 Difference]: Start difference. First operand has 204 places, 144 transitions, 1741 flow. Second operand 10 states and 124 transitions. [2024-06-28 00:18:56,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 165 transitions, 2160 flow [2024-06-28 00:18:56,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 165 transitions, 1934 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:18:56,826 INFO L231 Difference]: Finished difference. Result has 197 places, 139 transitions, 1629 flow [2024-06-28 00:18:56,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1629, PETRI_PLACES=197, PETRI_TRANSITIONS=139} [2024-06-28 00:18:56,827 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 00:18:56,827 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 139 transitions, 1629 flow [2024-06-28 00:18:56,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:56,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:56,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:56,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:18:56,828 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:56,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1284402477, now seen corresponding path program 8 times [2024-06-28 00:18:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:56,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487987460] [2024-06-28 00:18:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487987460] [2024-06-28 00:18:58,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487987460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:58,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:58,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983964183] [2024-06-28 00:18:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:58,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:58,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:58,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:58,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 139 transitions, 1629 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:58,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:58,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:58,483 INFO L124 PetriNetUnfolderBase]: 328/655 cut-off events. [2024-06-28 00:18:58,484 INFO L125 PetriNetUnfolderBase]: For 42447/42447 co-relation queries the response was YES. [2024-06-28 00:18:58,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 655 events. 328/655 cut-off events. For 42447/42447 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3224 event pairs, 58 based on Foata normal form. 8/662 useless extension candidates. Maximal degree in co-relation 4344. Up to 364 conditions per place. [2024-06-28 00:18:58,490 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 69 selfloop transitions, 67 changer transitions 20/158 dead transitions. [2024-06-28 00:18:58,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 158 transitions, 2009 flow [2024-06-28 00:18:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:18:58,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:18:58,492 INFO L175 Difference]: Start difference. First operand has 197 places, 139 transitions, 1629 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:18:58,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 158 transitions, 2009 flow [2024-06-28 00:18:58,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 158 transitions, 1848 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:18:58,579 INFO L231 Difference]: Finished difference. Result has 194 places, 129 transitions, 1502 flow [2024-06-28 00:18:58,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1502, PETRI_PLACES=194, PETRI_TRANSITIONS=129} [2024-06-28 00:18:58,589 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 166 predicate places. [2024-06-28 00:18:58,589 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 129 transitions, 1502 flow [2024-06-28 00:18:58,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:58,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:58,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:18:58,589 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:18:58,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2109017817, now seen corresponding path program 9 times [2024-06-28 00:18:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:58,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466091396] [2024-06-28 00:18:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:58,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466091396] [2024-06-28 00:18:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466091396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:59,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600643847] [2024-06-28 00:18:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:59,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:59,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:18:59,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 129 transitions, 1502 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:59,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:59,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:18:59,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:00,172 INFO L124 PetriNetUnfolderBase]: 308/614 cut-off events. [2024-06-28 00:19:00,172 INFO L125 PetriNetUnfolderBase]: For 43151/43151 co-relation queries the response was YES. [2024-06-28 00:19:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 614 events. 308/614 cut-off events. For 43151/43151 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2976 event pairs, 61 based on Foata normal form. 10/623 useless extension candidates. Maximal degree in co-relation 4098. Up to 380 conditions per place. [2024-06-28 00:19:00,177 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 74 selfloop transitions, 52 changer transitions 17/145 dead transitions. [2024-06-28 00:19:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 145 transitions, 1854 flow [2024-06-28 00:19:00,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 00:19:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2024-06-28 00:19:00,179 INFO L175 Difference]: Start difference. First operand has 194 places, 129 transitions, 1502 flow. Second operand 9 states and 111 transitions. [2024-06-28 00:19:00,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 145 transitions, 1854 flow [2024-06-28 00:19:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 145 transitions, 1653 flow, removed 10 selfloop flow, removed 18 redundant places. [2024-06-28 00:19:00,286 INFO L231 Difference]: Finished difference. Result has 179 places, 120 transitions, 1326 flow [2024-06-28 00:19:00,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1326, PETRI_PLACES=179, PETRI_TRANSITIONS=120} [2024-06-28 00:19:00,286 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2024-06-28 00:19:00,286 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 120 transitions, 1326 flow [2024-06-28 00:19:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:00,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:00,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:19:00,287 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:00,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash -915291191, now seen corresponding path program 12 times [2024-06-28 00:19:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039391007] [2024-06-28 00:19:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:01,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039391007] [2024-06-28 00:19:01,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039391007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185123260] [2024-06-28 00:19:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:01,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:01,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 120 transitions, 1326 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:01,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:01,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:01,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:01,985 INFO L124 PetriNetUnfolderBase]: 277/561 cut-off events. [2024-06-28 00:19:01,986 INFO L125 PetriNetUnfolderBase]: For 29150/29150 co-relation queries the response was YES. [2024-06-28 00:19:01,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3784 conditions, 561 events. 277/561 cut-off events. For 29150/29150 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2682 event pairs, 53 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 3716. Up to 374 conditions per place. [2024-06-28 00:19:01,990 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 73 selfloop transitions, 57 changer transitions 0/132 dead transitions. [2024-06-28 00:19:01,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 132 transitions, 1644 flow [2024-06-28 00:19:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:01,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 00:19:01,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39846743295019155 [2024-06-28 00:19:01,991 INFO L175 Difference]: Start difference. First operand has 179 places, 120 transitions, 1326 flow. Second operand 9 states and 104 transitions. [2024-06-28 00:19:01,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 132 transitions, 1644 flow [2024-06-28 00:19:02,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 132 transitions, 1528 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:02,060 INFO L231 Difference]: Finished difference. Result has 174 places, 121 transitions, 1365 flow [2024-06-28 00:19:02,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1365, PETRI_PLACES=174, PETRI_TRANSITIONS=121} [2024-06-28 00:19:02,060 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2024-06-28 00:19:02,061 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 121 transitions, 1365 flow [2024-06-28 00:19:02,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:02,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:02,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:19:02,061 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1087719925, now seen corresponding path program 13 times [2024-06-28 00:19:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313828515] [2024-06-28 00:19:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:03,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:03,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313828515] [2024-06-28 00:19:03,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313828515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:03,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:03,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070337241] [2024-06-28 00:19:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:03,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:03,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:03,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:03,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 121 transitions, 1365 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:03,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:03,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:03,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:03,960 INFO L124 PetriNetUnfolderBase]: 281/569 cut-off events. [2024-06-28 00:19:03,961 INFO L125 PetriNetUnfolderBase]: For 28348/28348 co-relation queries the response was YES. [2024-06-28 00:19:03,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 569 events. 281/569 cut-off events. For 28348/28348 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2740 event pairs, 59 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3791. Up to 451 conditions per place. [2024-06-28 00:19:03,965 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 88 selfloop transitions, 46 changer transitions 0/136 dead transitions. [2024-06-28 00:19:03,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 136 transitions, 1705 flow [2024-06-28 00:19:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 00:19:03,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-06-28 00:19:03,967 INFO L175 Difference]: Start difference. First operand has 174 places, 121 transitions, 1365 flow. Second operand 10 states and 118 transitions. [2024-06-28 00:19:03,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 136 transitions, 1705 flow [2024-06-28 00:19:04,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 136 transitions, 1562 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:19:04,040 INFO L231 Difference]: Finished difference. Result has 177 places, 122 transitions, 1358 flow [2024-06-28 00:19:04,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=177, PETRI_TRANSITIONS=122} [2024-06-28 00:19:04,041 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 149 predicate places. [2024-06-28 00:19:04,041 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 122 transitions, 1358 flow [2024-06-28 00:19:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:04,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:04,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:04,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:19:04,042 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:04,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:04,042 INFO L85 PathProgramCache]: Analyzing trace with hash -508725025, now seen corresponding path program 14 times [2024-06-28 00:19:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:04,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409675570] [2024-06-28 00:19:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:05,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409675570] [2024-06-28 00:19:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409675570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808913854] [2024-06-28 00:19:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:06,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:06,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 122 transitions, 1358 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:06,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:06,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:06,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:06,449 INFO L124 PetriNetUnfolderBase]: 285/577 cut-off events. [2024-06-28 00:19:06,449 INFO L125 PetriNetUnfolderBase]: For 28389/28389 co-relation queries the response was YES. [2024-06-28 00:19:06,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3871 conditions, 577 events. 285/577 cut-off events. For 28389/28389 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2789 event pairs, 57 based on Foata normal form. 2/578 useless extension candidates. Maximal degree in co-relation 3804. Up to 462 conditions per place. [2024-06-28 00:19:06,453 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 97 selfloop transitions, 41 changer transitions 0/140 dead transitions. [2024-06-28 00:19:06,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 140 transitions, 1794 flow [2024-06-28 00:19:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 00:19:06,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36990595611285265 [2024-06-28 00:19:06,454 INFO L175 Difference]: Start difference. First operand has 177 places, 122 transitions, 1358 flow. Second operand 11 states and 118 transitions. [2024-06-28 00:19:06,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 140 transitions, 1794 flow [2024-06-28 00:19:06,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 140 transitions, 1672 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:06,519 INFO L231 Difference]: Finished difference. Result has 180 places, 123 transitions, 1358 flow [2024-06-28 00:19:06,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1358, PETRI_PLACES=180, PETRI_TRANSITIONS=123} [2024-06-28 00:19:06,520 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 152 predicate places. [2024-06-28 00:19:06,520 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 123 transitions, 1358 flow [2024-06-28 00:19:06,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:06,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:06,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:19:06,526 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -514296655, now seen corresponding path program 15 times [2024-06-28 00:19:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166272282] [2024-06-28 00:19:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:08,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:08,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166272282] [2024-06-28 00:19:08,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166272282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:08,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:08,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544007541] [2024-06-28 00:19:08,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:08,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:08,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:08,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:08,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 123 transitions, 1358 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:08,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:08,843 INFO L124 PetriNetUnfolderBase]: 282/572 cut-off events. [2024-06-28 00:19:08,843 INFO L125 PetriNetUnfolderBase]: For 25985/25985 co-relation queries the response was YES. [2024-06-28 00:19:08,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3685 conditions, 572 events. 282/572 cut-off events. For 25985/25985 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2753 event pairs, 58 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3617. Up to 482 conditions per place. [2024-06-28 00:19:08,847 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 97 selfloop transitions, 37 changer transitions 0/136 dead transitions. [2024-06-28 00:19:08,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 136 transitions, 1658 flow [2024-06-28 00:19:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 00:19:08,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 00:19:08,872 INFO L175 Difference]: Start difference. First operand has 180 places, 123 transitions, 1358 flow. Second operand 9 states and 103 transitions. [2024-06-28 00:19:08,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 136 transitions, 1658 flow [2024-06-28 00:19:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 136 transitions, 1450 flow, removed 30 selfloop flow, removed 13 redundant places. [2024-06-28 00:19:08,947 INFO L231 Difference]: Finished difference. Result has 176 places, 123 transitions, 1228 flow [2024-06-28 00:19:08,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1228, PETRI_PLACES=176, PETRI_TRANSITIONS=123} [2024-06-28 00:19:08,948 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 148 predicate places. [2024-06-28 00:19:08,948 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 123 transitions, 1228 flow [2024-06-28 00:19:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:08,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:08,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:19:08,949 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:08,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1552168309, now seen corresponding path program 10 times [2024-06-28 00:19:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:08,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742240946] [2024-06-28 00:19:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742240946] [2024-06-28 00:19:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742240946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:10,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:10,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26742844] [2024-06-28 00:19:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:10,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:10,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 123 transitions, 1228 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:10,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:10,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:10,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:10,958 INFO L124 PetriNetUnfolderBase]: 298/608 cut-off events. [2024-06-28 00:19:10,959 INFO L125 PetriNetUnfolderBase]: For 33771/33771 co-relation queries the response was YES. [2024-06-28 00:19:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3570 conditions, 608 events. 298/608 cut-off events. For 33771/33771 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2990 event pairs, 64 based on Foata normal form. 10/617 useless extension candidates. Maximal degree in co-relation 3506. Up to 445 conditions per place. [2024-06-28 00:19:10,963 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 81 selfloop transitions, 46 changer transitions 11/140 dead transitions. [2024-06-28 00:19:10,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 140 transitions, 1566 flow [2024-06-28 00:19:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:10,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 00:19:10,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-06-28 00:19:10,966 INFO L175 Difference]: Start difference. First operand has 176 places, 123 transitions, 1228 flow. Second operand 10 states and 121 transitions. [2024-06-28 00:19:10,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 140 transitions, 1566 flow [2024-06-28 00:19:11,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 140 transitions, 1423 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:19:11,037 INFO L231 Difference]: Finished difference. Result has 177 places, 120 transitions, 1159 flow [2024-06-28 00:19:11,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1159, PETRI_PLACES=177, PETRI_TRANSITIONS=120} [2024-06-28 00:19:11,038 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 149 predicate places. [2024-06-28 00:19:11,038 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 120 transitions, 1159 flow [2024-06-28 00:19:11,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:11,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:11,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:19:11,039 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:11,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash -232184823, now seen corresponding path program 11 times [2024-06-28 00:19:11,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:11,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954988113] [2024-06-28 00:19:11,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:11,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954988113] [2024-06-28 00:19:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954988113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:12,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:12,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:12,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728562383] [2024-06-28 00:19:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:12,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:12,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:12,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 120 transitions, 1159 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:12,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:12,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:13,187 INFO L124 PetriNetUnfolderBase]: 279/575 cut-off events. [2024-06-28 00:19:13,187 INFO L125 PetriNetUnfolderBase]: For 29590/29590 co-relation queries the response was YES. [2024-06-28 00:19:13,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 575 events. 279/575 cut-off events. For 29590/29590 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2806 event pairs, 57 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 3204. Up to 368 conditions per place. [2024-06-28 00:19:13,191 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 85 selfloop transitions, 44 changer transitions 8/139 dead transitions. [2024-06-28 00:19:13,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 139 transitions, 1579 flow [2024-06-28 00:19:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:13,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 00:19:13,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4206896551724138 [2024-06-28 00:19:13,192 INFO L175 Difference]: Start difference. First operand has 177 places, 120 transitions, 1159 flow. Second operand 10 states and 122 transitions. [2024-06-28 00:19:13,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 139 transitions, 1579 flow [2024-06-28 00:19:13,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 139 transitions, 1479 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 00:19:13,248 INFO L231 Difference]: Finished difference. Result has 175 places, 116 transitions, 1117 flow [2024-06-28 00:19:13,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1117, PETRI_PLACES=175, PETRI_TRANSITIONS=116} [2024-06-28 00:19:13,248 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2024-06-28 00:19:13,248 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 116 transitions, 1117 flow [2024-06-28 00:19:13,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:13,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:13,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:13,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:19:13,249 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:13,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -595097996, now seen corresponding path program 1 times [2024-06-28 00:19:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:13,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365208114] [2024-06-28 00:19:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:14,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365208114] [2024-06-28 00:19:14,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365208114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:14,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:14,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068639172] [2024-06-28 00:19:14,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:14,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:14,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:14,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:14,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 116 transitions, 1117 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:14,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:14,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:14,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:15,049 INFO L124 PetriNetUnfolderBase]: 268/555 cut-off events. [2024-06-28 00:19:15,049 INFO L125 PetriNetUnfolderBase]: For 26573/26573 co-relation queries the response was YES. [2024-06-28 00:19:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 555 events. 268/555 cut-off events. For 26573/26573 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2691 event pairs, 80 based on Foata normal form. 6/560 useless extension candidates. Maximal degree in co-relation 3095. Up to 413 conditions per place. [2024-06-28 00:19:15,053 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 80 selfloop transitions, 34 changer transitions 14/130 dead transitions. [2024-06-28 00:19:15,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 130 transitions, 1411 flow [2024-06-28 00:19:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:15,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 00:19:15,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-28 00:19:15,054 INFO L175 Difference]: Start difference. First operand has 175 places, 116 transitions, 1117 flow. Second operand 10 states and 104 transitions. [2024-06-28 00:19:15,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 130 transitions, 1411 flow [2024-06-28 00:19:15,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 130 transitions, 1305 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:19:15,105 INFO L231 Difference]: Finished difference. Result has 171 places, 110 transitions, 1018 flow [2024-06-28 00:19:15,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1018, PETRI_PLACES=171, PETRI_TRANSITIONS=110} [2024-06-28 00:19:15,105 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 143 predicate places. [2024-06-28 00:19:15,105 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 110 transitions, 1018 flow [2024-06-28 00:19:15,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:15,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:15,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:19:15,106 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:15,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1469440018, now seen corresponding path program 1 times [2024-06-28 00:19:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:15,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602267859] [2024-06-28 00:19:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602267859] [2024-06-28 00:19:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602267859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:16,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:16,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704475050] [2024-06-28 00:19:16,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:16,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:16,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:16,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:16,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:16,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 110 transitions, 1018 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:16,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:16,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:16,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:17,035 INFO L124 PetriNetUnfolderBase]: 261/539 cut-off events. [2024-06-28 00:19:17,036 INFO L125 PetriNetUnfolderBase]: For 27125/27125 co-relation queries the response was YES. [2024-06-28 00:19:17,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 539 events. 261/539 cut-off events. For 27125/27125 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2569 event pairs, 92 based on Foata normal form. 8/546 useless extension candidates. Maximal degree in co-relation 2928. Up to 432 conditions per place. [2024-06-28 00:19:17,039 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 85 selfloop transitions, 26 changer transitions 10/123 dead transitions. [2024-06-28 00:19:17,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 123 transitions, 1300 flow [2024-06-28 00:19:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 00:19:17,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 00:19:17,040 INFO L175 Difference]: Start difference. First operand has 171 places, 110 transitions, 1018 flow. Second operand 9 states and 99 transitions. [2024-06-28 00:19:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 123 transitions, 1300 flow [2024-06-28 00:19:17,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 123 transitions, 1224 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:17,099 INFO L231 Difference]: Finished difference. Result has 163 places, 106 transitions, 958 flow [2024-06-28 00:19:17,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=163, PETRI_TRANSITIONS=106} [2024-06-28 00:19:17,100 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 135 predicate places. [2024-06-28 00:19:17,100 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 106 transitions, 958 flow [2024-06-28 00:19:17,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:17,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:17,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:17,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:19:17,101 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:17,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1469433322, now seen corresponding path program 2 times [2024-06-28 00:19:17,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:17,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468972857] [2024-06-28 00:19:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:18,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468972857] [2024-06-28 00:19:18,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468972857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:18,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:18,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:18,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652167691] [2024-06-28 00:19:18,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:18,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:18,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:18,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 106 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:18,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:18,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:18,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:19,073 INFO L124 PetriNetUnfolderBase]: 250/522 cut-off events. [2024-06-28 00:19:19,073 INFO L125 PetriNetUnfolderBase]: For 22973/22973 co-relation queries the response was YES. [2024-06-28 00:19:19,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2837 conditions, 522 events. 250/522 cut-off events. For 22973/22973 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2484 event pairs, 88 based on Foata normal form. 6/527 useless extension candidates. Maximal degree in co-relation 2780. Up to 410 conditions per place. [2024-06-28 00:19:19,076 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 80 selfloop transitions, 20 changer transitions 17/119 dead transitions. [2024-06-28 00:19:19,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 119 transitions, 1226 flow [2024-06-28 00:19:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 00:19:19,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-28 00:19:19,077 INFO L175 Difference]: Start difference. First operand has 163 places, 106 transitions, 958 flow. Second operand 10 states and 102 transitions. [2024-06-28 00:19:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 119 transitions, 1226 flow [2024-06-28 00:19:19,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 119 transitions, 1152 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:19,127 INFO L231 Difference]: Finished difference. Result has 162 places, 96 transitions, 831 flow [2024-06-28 00:19:19,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=831, PETRI_PLACES=162, PETRI_TRANSITIONS=96} [2024-06-28 00:19:19,127 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-06-28 00:19:19,127 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 96 transitions, 831 flow [2024-06-28 00:19:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:19,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:19,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:19,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:19:19,128 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:19,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1296712792, now seen corresponding path program 3 times [2024-06-28 00:19:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:19,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045642711] [2024-06-28 00:19:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045642711] [2024-06-28 00:19:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045642711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:20,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:20,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894994639] [2024-06-28 00:19:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:20,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:20,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:20,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:20,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 96 transitions, 831 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:20,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:20,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:20,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:21,130 INFO L124 PetriNetUnfolderBase]: 230/482 cut-off events. [2024-06-28 00:19:21,130 INFO L125 PetriNetUnfolderBase]: For 22945/22945 co-relation queries the response was YES. [2024-06-28 00:19:21,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 482 events. 230/482 cut-off events. For 22945/22945 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2224 event pairs, 86 based on Foata normal form. 6/487 useless extension candidates. Maximal degree in co-relation 2564. Up to 392 conditions per place. [2024-06-28 00:19:21,133 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 74 selfloop transitions, 17 changer transitions 17/110 dead transitions. [2024-06-28 00:19:21,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 110 transitions, 1083 flow [2024-06-28 00:19:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:21,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 00:19:21,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:19:21,134 INFO L175 Difference]: Start difference. First operand has 162 places, 96 transitions, 831 flow. Second operand 10 states and 100 transitions. [2024-06-28 00:19:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 110 transitions, 1083 flow [2024-06-28 00:19:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 110 transitions, 1020 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 00:19:21,168 INFO L231 Difference]: Finished difference. Result has 151 places, 89 transitions, 745 flow [2024-06-28 00:19:21,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=745, PETRI_PLACES=151, PETRI_TRANSITIONS=89} [2024-06-28 00:19:21,169 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 123 predicate places. [2024-06-28 00:19:21,169 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 89 transitions, 745 flow [2024-06-28 00:19:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:21,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:21,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:21,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:19:21,169 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:21,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:21,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1358835932, now seen corresponding path program 2 times [2024-06-28 00:19:21,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:21,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688370069] [2024-06-28 00:19:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:21,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688370069] [2024-06-28 00:19:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688370069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240444014] [2024-06-28 00:19:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:22,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:22,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 89 transitions, 745 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:22,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:22,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:22,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:23,062 INFO L124 PetriNetUnfolderBase]: 197/412 cut-off events. [2024-06-28 00:19:23,062 INFO L125 PetriNetUnfolderBase]: For 14702/14702 co-relation queries the response was YES. [2024-06-28 00:19:23,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 412 events. 197/412 cut-off events. For 14702/14702 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1779 event pairs, 78 based on Foata normal form. 8/419 useless extension candidates. Maximal degree in co-relation 1948. Up to 307 conditions per place. [2024-06-28 00:19:23,064 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 66 selfloop transitions, 21 changer transitions 11/100 dead transitions. [2024-06-28 00:19:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 100 transitions, 975 flow [2024-06-28 00:19:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:19:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:19:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 00:19:23,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:19:23,065 INFO L175 Difference]: Start difference. First operand has 151 places, 89 transitions, 745 flow. Second operand 8 states and 87 transitions. [2024-06-28 00:19:23,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 100 transitions, 975 flow [2024-06-28 00:19:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 100 transitions, 872 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-28 00:19:23,089 INFO L231 Difference]: Finished difference. Result has 136 places, 84 transitions, 648 flow [2024-06-28 00:19:23,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=648, PETRI_PLACES=136, PETRI_TRANSITIONS=84} [2024-06-28 00:19:23,090 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-28 00:19:23,090 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 84 transitions, 648 flow [2024-06-28 00:19:23,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:23,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:23,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:23,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:19:23,091 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:23,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:23,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2093386838, now seen corresponding path program 4 times [2024-06-28 00:19:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:23,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981966169] [2024-06-28 00:19:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:23,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981966169] [2024-06-28 00:19:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981966169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:24,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:24,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068883980] [2024-06-28 00:19:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:24,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:24,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:24,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 84 transitions, 648 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:24,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:24,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:24,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:24,988 INFO L124 PetriNetUnfolderBase]: 184/393 cut-off events. [2024-06-28 00:19:24,988 INFO L125 PetriNetUnfolderBase]: For 12569/12569 co-relation queries the response was YES. [2024-06-28 00:19:24,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 393 events. 184/393 cut-off events. For 12569/12569 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1701 event pairs, 74 based on Foata normal form. 6/398 useless extension candidates. Maximal degree in co-relation 1799. Up to 316 conditions per place. [2024-06-28 00:19:24,990 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 70 selfloop transitions, 14 changer transitions 9/95 dead transitions. [2024-06-28 00:19:24,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 95 transitions, 862 flow [2024-06-28 00:19:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 00:19:24,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:19:24,992 INFO L175 Difference]: Start difference. First operand has 136 places, 84 transitions, 648 flow. Second operand 9 states and 90 transitions. [2024-06-28 00:19:24,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 95 transitions, 862 flow [2024-06-28 00:19:25,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 95 transitions, 812 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:19:25,014 INFO L231 Difference]: Finished difference. Result has 134 places, 81 transitions, 603 flow [2024-06-28 00:19:25,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=134, PETRI_TRANSITIONS=81} [2024-06-28 00:19:25,015 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 106 predicate places. [2024-06-28 00:19:25,015 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 81 transitions, 603 flow [2024-06-28 00:19:25,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:25,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:25,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:25,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:19:25,016 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:25,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1569417786, now seen corresponding path program 5 times [2024-06-28 00:19:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924286446] [2024-06-28 00:19:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:25,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924286446] [2024-06-28 00:19:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924286446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:26,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841861366] [2024-06-28 00:19:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:26,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 81 transitions, 603 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:26,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:26,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:26,800 INFO L124 PetriNetUnfolderBase]: 177/380 cut-off events. [2024-06-28 00:19:26,800 INFO L125 PetriNetUnfolderBase]: For 12517/12517 co-relation queries the response was YES. [2024-06-28 00:19:26,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1778 conditions, 380 events. 177/380 cut-off events. For 12517/12517 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1626 event pairs, 74 based on Foata normal form. 6/385 useless extension candidates. Maximal degree in co-relation 1731. Up to 267 conditions per place. [2024-06-28 00:19:26,802 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 59 selfloop transitions, 11 changer transitions 20/92 dead transitions. [2024-06-28 00:19:26,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 92 transitions, 811 flow [2024-06-28 00:19:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 00:19:26,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:19:26,803 INFO L175 Difference]: Start difference. First operand has 134 places, 81 transitions, 603 flow. Second operand 9 states and 90 transitions. [2024-06-28 00:19:26,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 92 transitions, 811 flow [2024-06-28 00:19:26,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 92 transitions, 774 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:26,823 INFO L231 Difference]: Finished difference. Result has 131 places, 68 transitions, 495 flow [2024-06-28 00:19:26,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=131, PETRI_TRANSITIONS=68} [2024-06-28 00:19:26,823 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-06-28 00:19:26,823 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 68 transitions, 495 flow [2024-06-28 00:19:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:26,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:26,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:26,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:19:26,824 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:26,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1916249948, now seen corresponding path program 6 times [2024-06-28 00:19:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:26,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053121628] [2024-06-28 00:19:26,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:26,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053121628] [2024-06-28 00:19:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053121628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027663380] [2024-06-28 00:19:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:28,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:28,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:28,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 68 transitions, 495 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:28,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:28,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:28,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:28,622 INFO L124 PetriNetUnfolderBase]: 148/325 cut-off events. [2024-06-28 00:19:28,622 INFO L125 PetriNetUnfolderBase]: For 12473/12473 co-relation queries the response was YES. [2024-06-28 00:19:28,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1555 conditions, 325 events. 148/325 cut-off events. For 12473/12473 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1323 event pairs, 70 based on Foata normal form. 6/330 useless extension candidates. Maximal degree in co-relation 1509. Up to 259 conditions per place. [2024-06-28 00:19:28,624 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 58 selfloop transitions, 7 changer transitions 14/81 dead transitions. [2024-06-28 00:19:28,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 685 flow [2024-06-28 00:19:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-28 00:19:28,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32950191570881227 [2024-06-28 00:19:28,625 INFO L175 Difference]: Start difference. First operand has 131 places, 68 transitions, 495 flow. Second operand 9 states and 86 transitions. [2024-06-28 00:19:28,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 685 flow [2024-06-28 00:19:28,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 81 transitions, 634 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 00:19:28,636 INFO L231 Difference]: Finished difference. Result has 114 places, 64 transitions, 440 flow [2024-06-28 00:19:28,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=440, PETRI_PLACES=114, PETRI_TRANSITIONS=64} [2024-06-28 00:19:28,637 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 00:19:28,637 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 64 transitions, 440 flow [2024-06-28 00:19:28,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:28,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:28,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:28,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:19:28,638 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2093617478, now seen corresponding path program 7 times [2024-06-28 00:19:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674543321] [2024-06-28 00:19:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:28,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:30,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:30,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674543321] [2024-06-28 00:19:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674543321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:30,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413424391] [2024-06-28 00:19:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:30,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:30,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 64 transitions, 440 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:30,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:30,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:30,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:30,593 INFO L124 PetriNetUnfolderBase]: 142/315 cut-off events. [2024-06-28 00:19:30,593 INFO L125 PetriNetUnfolderBase]: For 8020/8020 co-relation queries the response was YES. [2024-06-28 00:19:30,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 315 events. 142/315 cut-off events. For 8020/8020 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1271 event pairs, 70 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1354. Up to 245 conditions per place. [2024-06-28 00:19:30,595 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 56 selfloop transitions, 7 changer transitions 13/78 dead transitions. [2024-06-28 00:19:30,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 78 transitions, 629 flow [2024-06-28 00:19:30,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-28 00:19:30,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32950191570881227 [2024-06-28 00:19:30,596 INFO L175 Difference]: Start difference. First operand has 114 places, 64 transitions, 440 flow. Second operand 9 states and 86 transitions. [2024-06-28 00:19:30,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 78 transitions, 629 flow [2024-06-28 00:19:30,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 78 transitions, 607 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:30,607 INFO L231 Difference]: Finished difference. Result has 110 places, 61 transitions, 417 flow [2024-06-28 00:19:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=110, PETRI_TRANSITIONS=61} [2024-06-28 00:19:30,607 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-28 00:19:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 61 transitions, 417 flow [2024-06-28 00:19:30,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:19:30,608 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1562931036, now seen corresponding path program 8 times [2024-06-28 00:19:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263021652] [2024-06-28 00:19:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:32,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263021652] [2024-06-28 00:19:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263021652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:32,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236927856] [2024-06-28 00:19:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:32,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:32,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 61 transitions, 417 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:32,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:32,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:32,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:32,393 INFO L124 PetriNetUnfolderBase]: 130/291 cut-off events. [2024-06-28 00:19:32,393 INFO L125 PetriNetUnfolderBase]: For 6424/6424 co-relation queries the response was YES. [2024-06-28 00:19:32,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 291 events. 130/291 cut-off events. For 6424/6424 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1131 event pairs, 71 based on Foata normal form. 6/296 useless extension candidates. Maximal degree in co-relation 1252. Up to 203 conditions per place. [2024-06-28 00:19:32,395 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 44 selfloop transitions, 3 changer transitions 24/73 dead transitions. [2024-06-28 00:19:32,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 73 transitions, 589 flow [2024-06-28 00:19:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 00:19:32,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32567049808429116 [2024-06-28 00:19:32,396 INFO L175 Difference]: Start difference. First operand has 110 places, 61 transitions, 417 flow. Second operand 9 states and 85 transitions. [2024-06-28 00:19:32,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 73 transitions, 589 flow [2024-06-28 00:19:32,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 73 transitions, 560 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 00:19:32,405 INFO L231 Difference]: Finished difference. Result has 104 places, 48 transitions, 332 flow [2024-06-28 00:19:32,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=332, PETRI_PLACES=104, PETRI_TRANSITIONS=48} [2024-06-28 00:19:32,405 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-06-28 00:19:32,405 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 48 transitions, 332 flow [2024-06-28 00:19:32,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:32,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:32,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:32,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:19:32,406 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:32,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash -954857640, now seen corresponding path program 9 times [2024-06-28 00:19:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:32,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949836172] [2024-06-28 00:19:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:32,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949836172] [2024-06-28 00:19:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949836172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:33,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:33,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373439954] [2024-06-28 00:19:33,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:33,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:33,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:33,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 48 transitions, 332 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:33,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:33,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:33,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:34,192 INFO L124 PetriNetUnfolderBase]: 103/229 cut-off events. [2024-06-28 00:19:34,193 INFO L125 PetriNetUnfolderBase]: For 6352/6354 co-relation queries the response was YES. [2024-06-28 00:19:34,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 229 events. 103/229 cut-off events. For 6352/6354 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 804 event pairs, 30 based on Foata normal form. 8/236 useless extension candidates. Maximal degree in co-relation 1055. Up to 129 conditions per place. [2024-06-28 00:19:34,194 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 25 selfloop transitions, 12 changer transitions 21/60 dead transitions. [2024-06-28 00:19:34,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 60 transitions, 478 flow [2024-06-28 00:19:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-28 00:19:34,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371647509578544 [2024-06-28 00:19:34,195 INFO L175 Difference]: Start difference. First operand has 104 places, 48 transitions, 332 flow. Second operand 9 states and 88 transitions. [2024-06-28 00:19:34,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 60 transitions, 478 flow [2024-06-28 00:19:34,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 60 transitions, 450 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 00:19:34,203 INFO L231 Difference]: Finished difference. Result has 85 places, 36 transitions, 258 flow [2024-06-28 00:19:34,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=85, PETRI_TRANSITIONS=36} [2024-06-28 00:19:34,204 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 57 predicate places. [2024-06-28 00:19:34,204 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 36 transitions, 258 flow [2024-06-28 00:19:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:34,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:34,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:19:34,204 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:34,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash 467925028, now seen corresponding path program 10 times [2024-06-28 00:19:34,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547476878] [2024-06-28 00:19:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547476878] [2024-06-28 00:19:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547476878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066560647] [2024-06-28 00:19:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:35,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:36,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:36,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 36 transitions, 258 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:36,233 INFO L124 PetriNetUnfolderBase]: 68/149 cut-off events. [2024-06-28 00:19:36,234 INFO L125 PetriNetUnfolderBase]: For 2653/2653 co-relation queries the response was YES. [2024-06-28 00:19:36,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 149 events. 68/149 cut-off events. For 2653/2653 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 433 event pairs, 19 based on Foata normal form. 8/156 useless extension candidates. Maximal degree in co-relation 596. Up to 74 conditions per place. [2024-06-28 00:19:36,235 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 22 selfloop transitions, 12 changer transitions 10/46 dead transitions. [2024-06-28 00:19:36,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 46 transitions, 370 flow [2024-06-28 00:19:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 00:19:36,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 00:19:36,236 INFO L175 Difference]: Start difference. First operand has 85 places, 36 transitions, 258 flow. Second operand 10 states and 100 transitions. [2024-06-28 00:19:36,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 46 transitions, 370 flow [2024-06-28 00:19:36,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 46 transitions, 307 flow, removed 9 selfloop flow, removed 18 redundant places. [2024-06-28 00:19:36,238 INFO L231 Difference]: Finished difference. Result has 65 places, 31 transitions, 187 flow [2024-06-28 00:19:36,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=31} [2024-06-28 00:19:36,238 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2024-06-28 00:19:36,238 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 31 transitions, 187 flow [2024-06-28 00:19:36,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:36,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:19:36,239 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:36,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1396974296, now seen corresponding path program 11 times [2024-06-28 00:19:36,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218486027] [2024-06-28 00:19:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:37,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218486027] [2024-06-28 00:19:37,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218486027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:37,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:37,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:37,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781592676] [2024-06-28 00:19:37,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:37,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:37,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:38,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 00:19:38,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 31 transitions, 187 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:38,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:38,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 00:19:38,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:38,216 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-28 00:19:38,216 INFO L125 PetriNetUnfolderBase]: For 1060/1060 co-relation queries the response was YES. [2024-06-28 00:19:38,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 132 events. 57/132 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 365 event pairs, 15 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 467. Up to 64 conditions per place. [2024-06-28 00:19:38,217 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 19 selfloop transitions, 9 changer transitions 12/42 dead transitions. [2024-06-28 00:19:38,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 42 transitions, 293 flow [2024-06-28 00:19:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:38,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 00:19:38,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-28 00:19:38,218 INFO L175 Difference]: Start difference. First operand has 65 places, 31 transitions, 187 flow. Second operand 10 states and 97 transitions. [2024-06-28 00:19:38,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 42 transitions, 293 flow [2024-06-28 00:19:38,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 42 transitions, 248 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 00:19:38,220 INFO L231 Difference]: Finished difference. Result has 58 places, 26 transitions, 140 flow [2024-06-28 00:19:38,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=26} [2024-06-28 00:19:38,220 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-28 00:19:38,220 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 26 transitions, 140 flow [2024-06-28 00:19:38,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:38,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:38,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:38,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:19:38,221 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:38,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1569464186, now seen corresponding path program 12 times [2024-06-28 00:19:38,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:38,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872011756] [2024-06-28 00:19:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:38,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872011756] [2024-06-28 00:19:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872011756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:39,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:39,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759630680] [2024-06-28 00:19:39,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:39,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:39,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:39,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 26 transitions, 140 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:39,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:39,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:39,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:40,131 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2024-06-28 00:19:40,132 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2024-06-28 00:19:40,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 113 events. 48/113 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 286 event pairs, 15 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 370. Up to 52 conditions per place. [2024-06-28 00:19:40,132 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 16 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2024-06-28 00:19:40,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 36 transitions, 230 flow [2024-06-28 00:19:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 78 transitions. [2024-06-28 00:19:40,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2988505747126437 [2024-06-28 00:19:40,133 INFO L175 Difference]: Start difference. First operand has 58 places, 26 transitions, 140 flow. Second operand 9 states and 78 transitions. [2024-06-28 00:19:40,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 36 transitions, 230 flow [2024-06-28 00:19:40,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 204 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:40,134 INFO L231 Difference]: Finished difference. Result has 50 places, 20 transitions, 86 flow [2024-06-28 00:19:40,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=86, PETRI_PLACES=50, PETRI_TRANSITIONS=20} [2024-06-28 00:19:40,135 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2024-06-28 00:19:40,135 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 20 transitions, 86 flow [2024-06-28 00:19:40,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:40,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:40,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:40,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:19:40,136 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 00:19:40,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1569694826, now seen corresponding path program 13 times [2024-06-28 00:19:40,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213977830] [2024-06-28 00:19:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:41,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:41,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213977830] [2024-06-28 00:19:41,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213977830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:41,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:41,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34744035] [2024-06-28 00:19:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:41,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:41,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:41,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:41,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 00:19:41,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 20 transitions, 86 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:41,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 00:19:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:42,147 INFO L124 PetriNetUnfolderBase]: 22/59 cut-off events. [2024-06-28 00:19:42,147 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-06-28 00:19:42,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 59 events. 22/59 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 150. Up to 24 conditions per place. [2024-06-28 00:19:42,148 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-28 00:19:42,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 27 transitions, 134 flow [2024-06-28 00:19:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:19:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:19:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 76 transitions. [2024-06-28 00:19:42,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2620689655172414 [2024-06-28 00:19:42,148 INFO L175 Difference]: Start difference. First operand has 50 places, 20 transitions, 86 flow. Second operand 10 states and 76 transitions. [2024-06-28 00:19:42,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 27 transitions, 134 flow [2024-06-28 00:19:42,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 110 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 00:19:42,149 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2024-06-28 00:19:42,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2024-06-28 00:19:42,149 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2024-06-28 00:19:42,149 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2024-06-28 00:19:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 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) [2024-06-28 00:19:42,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 00:19:42,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 00:19:42,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 00:19:42,153 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 00:19:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:19:42,153 INFO L445 BasicCegarLoop]: Path program histogram: [15, 13, 11, 10, 9, 8, 6, 5, 5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:42,156 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:19:42,156 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:19:42,159 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 00:19:42,159 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 00:19:42,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:19:42 BasicIcfg [2024-06-28 00:19:42,160 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:19:42,160 INFO L158 Benchmark]: Toolchain (without parser) took 172360.73ms. Allocated memory was 218.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 142.0MB in the beginning and 606.8MB in the end (delta: -464.7MB). Peak memory consumption was 732.3MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,160 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 218.1MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:19:42,160 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 189.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:19:42,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.69ms. Allocated memory is still 218.1MB. Free memory was 141.8MB in the beginning and 167.5MB in the end (delta: -25.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,161 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.88ms. Allocated memory is still 218.1MB. Free memory was 167.5MB in the beginning and 160.1MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,161 INFO L158 Benchmark]: Boogie Preprocessor took 75.66ms. Allocated memory is still 218.1MB. Free memory was 160.1MB in the beginning and 157.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,161 INFO L158 Benchmark]: RCFGBuilder took 746.83ms. Allocated memory is still 218.1MB. Free memory was 155.9MB in the beginning and 78.4MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,161 INFO L158 Benchmark]: TraceAbstraction took 170921.38ms. Allocated memory was 218.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 78.4MB in the beginning and 606.8MB in the end (delta: -528.4MB). Peak memory consumption was 667.0MB. Max. memory is 16.1GB. [2024-06-28 00:19:42,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 218.1MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 218.1MB. Free memory is still 189.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.69ms. Allocated memory is still 218.1MB. Free memory was 141.8MB in the beginning and 167.5MB in the end (delta: -25.7MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.88ms. Allocated memory is still 218.1MB. Free memory was 167.5MB in the beginning and 160.1MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.66ms. Allocated memory is still 218.1MB. Free memory was 160.1MB in the beginning and 157.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 746.83ms. Allocated memory is still 218.1MB. Free memory was 155.9MB in the beginning and 78.4MB in the end (delta: 77.6MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * TraceAbstraction took 170921.38ms. Allocated memory was 218.1MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 78.4MB in the beginning and 606.8MB in the end (delta: -528.4MB). Peak memory consumption was 667.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 46 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 170.8s, OverallIterations: 102, TraceHistogramMax: 1, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 41.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4194 SdHoareTripleChecker+Valid, 21.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3565 mSDsluCounter, 2602 SdHoareTripleChecker+Invalid, 18.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2106 mSDsCounter, 1248 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27761 IncrementalHoareTripleChecker+Invalid, 29009 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1248 mSolverCounterUnsat, 496 mSDtfsCounter, 27761 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 932 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 928 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 864 ImplicationChecksByTransitivity, 31.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2341occurred in iteration=54, InterpolantAutomatonStates: 885, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 127.0s InterpolantComputationTime, 1505 NumberOfCodeBlocks, 1505 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1403 ConstructedInterpolants, 0 QuantifiedInterpolants, 80798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 102 InterpolantComputations, 102 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:19:42,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE