./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_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/rfi007_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 eb4cb34f 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/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi007_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-eb4cb34-m [2024-06-21 19:14:12,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:14:12,270 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:14:12,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:14:12,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:14:12,301 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:14:12,302 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:14:12,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:14:12,302 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:14:12,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:14:12,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:14:12,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:14:12,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:14:12,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:14:12,310 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:14:12,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:14:12,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:14:12,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:14:12,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:14:12,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:14:12,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:14:12,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:14:12,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:14:12,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:14:12,313 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:14:12,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:14:12,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:14:12,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:14:12,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:14:12,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:14:12,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:14:12,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:14:12,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:14:12,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:14:12,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:14:12,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:14:12,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:14:12,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:14:12,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:14:12,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:14:12,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:14:12,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:14:12,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:14:12,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:14:12,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:14:12,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:14:12,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:14:12,586 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:14:12,586 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:14:12,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-21 19:14:12,660 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:14:12,661 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:14:12,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:14:13,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:14:13,953 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:14:13,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:14:13,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03984ce0/d66d6596ed594b318a5806215f46dfd9/FLAG4eb47dfd3 [2024-06-21 19:14:13,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a03984ce0/d66d6596ed594b318a5806215f46dfd9 [2024-06-21 19:14:13,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:14:13,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:14:13,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:14:13,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:14:13,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:14:13,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:14:12" (1/2) ... [2024-06-21 19:14:13,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e97f46 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:14:13, skipping insertion in model container [2024-06-21 19:14:13,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:14:12" (1/2) ... [2024-06-21 19:14:13,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d71bfd8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:14:13, skipping insertion in model container [2024-06-21 19:14:13,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:14:13" (2/2) ... [2024-06-21 19:14:13,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e97f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:13, skipping insertion in model container [2024-06-21 19:14:13,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:14:13" (2/2) ... [2024-06-21 19:14:13,984 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:14:14,000 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:14:14,001 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:14:14,002 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-21 19:14:14,002 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:14:14,002 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-21 19:14:14,034 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:14:14,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:14:14,325 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:14:14,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:14:14,550 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:14:14,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14 WrapperNode [2024-06-21 19:14:14,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:14:14,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:14:14,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:14:14,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:14:14,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,610 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-21 19:14:14,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:14:14,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:14:14,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:14:14,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:14:14,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,660 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]. [2024-06-21 19:14:14,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:14:14,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:14:14,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:14:14,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:14:14,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (1/1) ... [2024-06-21 19:14:14,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:14:14,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:14:14,762 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) [2024-06-21 19:14:14,803 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 [2024-06-21 19:14:14,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:14:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:14:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:14:14,818 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:14:14,818 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:14:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:14:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:14:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:14:14,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:14:14,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:14:14,820 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:14:14,911 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:14:14,913 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:14:15,310 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:14:15,311 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:14:15,453 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:14:15,453 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:14:15,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:14:15 BoogieIcfgContainer [2024-06-21 19:14:15,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:14:15,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:14:15,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:14:15,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:14:15,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:14:12" (1/4) ... [2024-06-21 19:14:15,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1396b5ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:14:15, skipping insertion in model container [2024-06-21 19:14:15,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:14:13" (2/4) ... [2024-06-21 19:14:15,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1396b5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:14:15, skipping insertion in model container [2024-06-21 19:14:15,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:14:14" (3/4) ... [2024-06-21 19:14:15,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1396b5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:14:15, skipping insertion in model container [2024-06-21 19:14:15,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:14:15" (4/4) ... [2024-06-21 19:14:15,464 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-21 19:14:15,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:14:15,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 19:14:15,477 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:14:15,515 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:14:15,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 19:14:15,567 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-21 19:14:15,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:14:15,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:14:15,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-21 19:14:15,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-21 19:14:15,583 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:14:15,589 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;@684e8f22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:14:15,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 19:14:15,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:14:15,593 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:14:15,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:14:15,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:15,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:14:15,594 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)] === [2024-06-21 19:14:15,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 325944614, now seen corresponding path program 1 times [2024-06-21 19:14:15,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113566217] [2024-06-21 19:14:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:16,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:16,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113566217] [2024-06-21 19:14:16,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113566217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:16,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:16,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:14:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928110573] [2024-06-21 19:14:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:16,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:14:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:14:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:14:16,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-21 19:14:16,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:16,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:16,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-21 19:14:16,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:17,053 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-21 19:14:17,054 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-21 19:14:17,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-21 19:14:17,058 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-21 19:14:17,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-21 19:14:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:14:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:14:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-21 19:14:17,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-21 19:14:17,068 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-21 19:14:17,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-21 19:14:17,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:17,071 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-21 19:14:17,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-21 19:14:17,075 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-21 19:14:17,075 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-21 19:14:17,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:17,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:17,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:17,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:14:17,076 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)] === [2024-06-21 19:14:17,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:17,076 INFO L85 PathProgramCache]: Analyzing trace with hash -299804411, now seen corresponding path program 1 times [2024-06-21 19:14:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375949918] [2024-06-21 19:14:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:17,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375949918] [2024-06-21 19:14:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375949918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:17,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:14:17,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086374990] [2024-06-21 19:14:17,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:17,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:14:17,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:14:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:14:17,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-21 19:14:17,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:17,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:17,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-21 19:14:17,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:17,800 INFO L124 PetriNetUnfolderBase]: 159/303 cut-off events. [2024-06-21 19:14:17,800 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-21 19:14:17,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 303 events. 159/303 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1097 event pairs, 79 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-21 19:14:17,805 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-21 19:14:17,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-21 19:14:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:14:17,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:14:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-21 19:14:17,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-21 19:14:17,809 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 68 transitions. [2024-06-21 19:14:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-21 19:14:17,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:14:17,813 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-21 19:14:17,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-21 19:14:17,813 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-21 19:14:17,813 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-21 19:14:17,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:17,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:17,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:17,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:14:17,815 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)] === [2024-06-21 19:14:17,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash -704001021, now seen corresponding path program 1 times [2024-06-21 19:14:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:17,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020531650] [2024-06-21 19:14:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:18,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:18,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020531650] [2024-06-21 19:14:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020531650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:18,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:18,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:14:18,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363929552] [2024-06-21 19:14:18,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:18,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:14:18,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:18,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:14:18,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:14:18,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-21 19:14:18,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-21 19:14:18,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:18,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-21 19:14:18,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:18,748 INFO L124 PetriNetUnfolderBase]: 187/338 cut-off events. [2024-06-21 19:14:18,748 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-21 19:14:18,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 338 events. 187/338 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1201 event pairs, 67 based on Foata normal form. 3/340 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-21 19:14:18,750 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-21 19:14:18,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 249 flow [2024-06-21 19:14:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:14:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:14:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-21 19:14:18,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-21 19:14:18,754 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 85 transitions. [2024-06-21 19:14:18,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 249 flow [2024-06-21 19:14:18,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:18,757 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 160 flow [2024-06-21 19:14:18,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-21 19:14:18,758 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-21 19:14:18,759 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 160 flow [2024-06-21 19:14:18,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-21 19:14:18,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:18,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:18,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:14:18,760 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)] === [2024-06-21 19:14:18,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:18,760 INFO L85 PathProgramCache]: Analyzing trace with hash -210665862, now seen corresponding path program 1 times [2024-06-21 19:14:18,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:18,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338230374] [2024-06-21 19:14:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:19,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:19,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338230374] [2024-06-21 19:14:19,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338230374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:19,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:19,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:19,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782531115] [2024-06-21 19:14:19,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:19,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:19,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:19,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-21 19:14:19,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:19,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:19,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-21 19:14:19,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:19,935 INFO L124 PetriNetUnfolderBase]: 188/340 cut-off events. [2024-06-21 19:14:19,935 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-21 19:14:19,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 340 events. 188/340 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1187 event pairs, 46 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-21 19:14:19,939 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 14 changer transitions 0/55 dead transitions. [2024-06-21 19:14:19,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 334 flow [2024-06-21 19:14:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-21 19:14:19,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-21 19:14:19,942 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 160 flow. Second operand 6 states and 100 transitions. [2024-06-21 19:14:19,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 334 flow [2024-06-21 19:14:19,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 330 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-21 19:14:19,947 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 212 flow [2024-06-21 19:14:19,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-21 19:14:19,949 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-21 19:14:19,949 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 212 flow [2024-06-21 19:14:19,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:19,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:19,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:19,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:14:19,950 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)] === [2024-06-21 19:14:19,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:19,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2059888706, now seen corresponding path program 1 times [2024-06-21 19:14:19,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:19,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872831385] [2024-06-21 19:14:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872831385] [2024-06-21 19:14:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872831385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898480062] [2024-06-21 19:14:21,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:21,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:21,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:21,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-21 19:14:21,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:21,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:21,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-21 19:14:21,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:21,271 INFO L124 PetriNetUnfolderBase]: 189/343 cut-off events. [2024-06-21 19:14:21,271 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-21 19:14:21,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1176 conditions, 343 events. 189/343 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1206 event pairs, 24 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-21 19:14:21,273 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-21 19:14:21,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 380 flow [2024-06-21 19:14:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-21 19:14:21,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-21 19:14:21,275 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 212 flow. Second operand 7 states and 110 transitions. [2024-06-21 19:14:21,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 380 flow [2024-06-21 19:14:21,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 348 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:21,277 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 215 flow [2024-06-21 19:14:21,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-21 19:14:21,278 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-21 19:14:21,278 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 215 flow [2024-06-21 19:14:21,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:21,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:21,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:21,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:14:21,279 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)] === [2024-06-21 19:14:21,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1384917533, now seen corresponding path program 1 times [2024-06-21 19:14:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:21,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112142113] [2024-06-21 19:14:21,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:21,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:22,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112142113] [2024-06-21 19:14:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112142113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:22,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:22,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:14:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035242373] [2024-06-21 19:14:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:22,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:14:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:14:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:14:22,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:22,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:22,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:22,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:22,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:22,431 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-21 19:14:22,431 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-21 19:14:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 340 events. 187/340 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1200 event pairs, 47 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-21 19:14:22,433 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-21 19:14:22,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 321 flow [2024-06-21 19:14:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:14:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:14:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-21 19:14:22,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:14:22,434 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 215 flow. Second operand 5 states and 60 transitions. [2024-06-21 19:14:22,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 321 flow [2024-06-21 19:14:22,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 278 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:22,437 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 214 flow [2024-06-21 19:14:22,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-21 19:14:22,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-21 19:14:22,437 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 214 flow [2024-06-21 19:14:22,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:22,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:22,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:14:22,438 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)] === [2024-06-21 19:14:22,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:22,439 INFO L85 PathProgramCache]: Analyzing trace with hash -17632073, now seen corresponding path program 1 times [2024-06-21 19:14:22,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:22,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912339553] [2024-06-21 19:14:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:23,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:23,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912339553] [2024-06-21 19:14:23,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912339553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:23,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:23,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034601334] [2024-06-21 19:14:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:23,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:23,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:23,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:23,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:23,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:23,909 INFO L124 PetriNetUnfolderBase]: 181/331 cut-off events. [2024-06-21 19:14:23,909 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2024-06-21 19:14:23,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 331 events. 181/331 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1146 event pairs, 44 based on Foata normal form. 3/333 useless extension candidates. Maximal degree in co-relation 1137. Up to 311 conditions per place. [2024-06-21 19:14:23,911 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-21 19:14:23,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 330 flow [2024-06-21 19:14:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:14:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:14:23,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-21 19:14:23,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-21 19:14:23,913 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 214 flow. Second operand 6 states and 71 transitions. [2024-06-21 19:14:23,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 330 flow [2024-06-21 19:14:23,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:23,915 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 239 flow [2024-06-21 19:14:23,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-21 19:14:23,917 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-21 19:14:23,917 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 239 flow [2024-06-21 19:14:23,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:23,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:23,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:23,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:14:23,917 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)] === [2024-06-21 19:14:23,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -546808574, now seen corresponding path program 1 times [2024-06-21 19:14:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:23,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122009340] [2024-06-21 19:14:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:24,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:24,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122009340] [2024-06-21 19:14:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122009340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:24,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013466388] [2024-06-21 19:14:24,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:24,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:24,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:24,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:24,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:24,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:24,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:25,020 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-21 19:14:25,021 INFO L125 PetriNetUnfolderBase]: For 1100/1100 co-relation queries the response was YES. [2024-06-21 19:14:25,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 372 events. 204/372 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 49 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1372. Up to 333 conditions per place. [2024-06-21 19:14:25,023 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2024-06-21 19:14:25,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 444 flow [2024-06-21 19:14:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-21 19:14:25,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-21 19:14:25,024 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 239 flow. Second operand 7 states and 81 transitions. [2024-06-21 19:14:25,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 444 flow [2024-06-21 19:14:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 425 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:25,027 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 324 flow [2024-06-21 19:14:25,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-21 19:14:25,027 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-21 19:14:25,027 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 324 flow [2024-06-21 19:14:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:25,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:25,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:25,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:14:25,028 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)] === [2024-06-21 19:14:25,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -534088964, now seen corresponding path program 2 times [2024-06-21 19:14:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:25,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792540733] [2024-06-21 19:14:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792540733] [2024-06-21 19:14:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792540733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:25,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272230198] [2024-06-21 19:14:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:25,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:26,040 INFO L124 PetriNetUnfolderBase]: 201/367 cut-off events. [2024-06-21 19:14:26,041 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-21 19:14:26,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 367 events. 201/367 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1308 event pairs, 48 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1438. Up to 351 conditions per place. [2024-06-21 19:14:26,049 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-06-21 19:14:26,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 452 flow [2024-06-21 19:14:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-21 19:14:26,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 19:14:26,065 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 324 flow. Second operand 7 states and 75 transitions. [2024-06-21 19:14:26,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 452 flow [2024-06-21 19:14:26,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 441 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:26,069 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 350 flow [2024-06-21 19:14:26,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=350, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-21 19:14:26,070 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-21 19:14:26,070 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 350 flow [2024-06-21 19:14:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:26,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:26,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:14:26,070 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)] === [2024-06-21 19:14:26,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1732430776, now seen corresponding path program 3 times [2024-06-21 19:14:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235073626] [2024-06-21 19:14:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235073626] [2024-06-21 19:14:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235073626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:14:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028979579] [2024-06-21 19:14:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:26,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:14:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:14:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:14:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:27,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:27,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:27,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:27,263 INFO L124 PetriNetUnfolderBase]: 194/354 cut-off events. [2024-06-21 19:14:27,263 INFO L125 PetriNetUnfolderBase]: For 1608/1608 co-relation queries the response was YES. [2024-06-21 19:14:27,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 354 events. 194/354 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1237 event pairs, 44 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1420. Up to 293 conditions per place. [2024-06-21 19:14:27,272 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 40 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2024-06-21 19:14:27,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 515 flow [2024-06-21 19:14:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-21 19:14:27,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-21 19:14:27,274 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 350 flow. Second operand 7 states and 87 transitions. [2024-06-21 19:14:27,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 515 flow [2024-06-21 19:14:27,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:27,293 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 401 flow [2024-06-21 19:14:27,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-21 19:14:27,293 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-21 19:14:27,294 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 401 flow [2024-06-21 19:14:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:27,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:27,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:27,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:14:27,294 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)] === [2024-06-21 19:14:27,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 268191758, now seen corresponding path program 1 times [2024-06-21 19:14:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:27,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586411621] [2024-06-21 19:14:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:27,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:28,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586411621] [2024-06-21 19:14:28,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586411621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:28,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:28,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243494419] [2024-06-21 19:14:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:28,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:28,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:28,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 401 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:28,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:28,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:28,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:28,395 INFO L124 PetriNetUnfolderBase]: 210/380 cut-off events. [2024-06-21 19:14:28,395 INFO L125 PetriNetUnfolderBase]: For 2114/2114 co-relation queries the response was YES. [2024-06-21 19:14:28,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 380 events. 210/380 cut-off events. For 2114/2114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1347 event pairs, 50 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 1596. Up to 319 conditions per place. [2024-06-21 19:14:28,397 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-21 19:14:28,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 617 flow [2024-06-21 19:14:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-21 19:14:28,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-21 19:14:28,399 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 401 flow. Second operand 7 states and 87 transitions. [2024-06-21 19:14:28,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 617 flow [2024-06-21 19:14:28,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 555 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:28,402 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 427 flow [2024-06-21 19:14:28,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-21 19:14:28,403 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-21 19:14:28,403 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 427 flow [2024-06-21 19:14:28,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:28,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:28,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:14:28,404 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)] === [2024-06-21 19:14:28,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash 623349434, now seen corresponding path program 2 times [2024-06-21 19:14:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501629179] [2024-06-21 19:14:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:29,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:29,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501629179] [2024-06-21 19:14:29,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501629179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:29,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:29,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186630259] [2024-06-21 19:14:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:29,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:29,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:29,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:29,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:29,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:29,479 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-21 19:14:29,479 INFO L125 PetriNetUnfolderBase]: For 2372/2372 co-relation queries the response was YES. [2024-06-21 19:14:29,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 385 events. 213/385 cut-off events. For 2372/2372 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1376 event pairs, 48 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1674. Up to 366 conditions per place. [2024-06-21 19:14:29,481 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-21 19:14:29,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 583 flow [2024-06-21 19:14:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:29,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 19:14:29,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-21 19:14:29,483 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 427 flow. Second operand 7 states and 78 transitions. [2024-06-21 19:14:29,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 583 flow [2024-06-21 19:14:29,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 569 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:14:29,488 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 458 flow [2024-06-21 19:14:29,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-06-21 19:14:29,490 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-21 19:14:29,490 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 458 flow [2024-06-21 19:14:29,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:29,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:29,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:29,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:14:29,491 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)] === [2024-06-21 19:14:29,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1954766462, now seen corresponding path program 3 times [2024-06-21 19:14:29,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:29,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220131533] [2024-06-21 19:14:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:30,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220131533] [2024-06-21 19:14:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220131533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:30,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:30,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:30,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370386006] [2024-06-21 19:14:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:30,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:30,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:30,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:30,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:30,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:30,563 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-21 19:14:30,563 INFO L125 PetriNetUnfolderBase]: For 2776/2776 co-relation queries the response was YES. [2024-06-21 19:14:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 382 events. 211/382 cut-off events. For 2776/2776 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1356 event pairs, 48 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1720. Up to 357 conditions per place. [2024-06-21 19:14:30,565 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-21 19:14:30,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 622 flow [2024-06-21 19:14:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:30,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 19:14:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-21 19:14:30,567 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 458 flow. Second operand 7 states and 80 transitions. [2024-06-21 19:14:30,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 622 flow [2024-06-21 19:14:30,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 593 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:30,586 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 484 flow [2024-06-21 19:14:30,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-21 19:14:30,587 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-21 19:14:30,587 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 484 flow [2024-06-21 19:14:30,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:30,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:30,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:14:30,588 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)] === [2024-06-21 19:14:30,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1630515718, now seen corresponding path program 4 times [2024-06-21 19:14:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:30,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451086305] [2024-06-21 19:14:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:31,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451086305] [2024-06-21 19:14:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451086305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:31,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:31,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906610382] [2024-06-21 19:14:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:31,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:31,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:31,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:31,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:31,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:31,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:31,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:32,096 INFO L124 PetriNetUnfolderBase]: 212/384 cut-off events. [2024-06-21 19:14:32,096 INFO L125 PetriNetUnfolderBase]: For 3222/3222 co-relation queries the response was YES. [2024-06-21 19:14:32,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 384 events. 212/384 cut-off events. For 3222/3222 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1388 event pairs, 44 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 1767. Up to 286 conditions per place. [2024-06-21 19:14:32,098 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 28 changer transitions 0/81 dead transitions. [2024-06-21 19:14:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 81 transitions, 763 flow [2024-06-21 19:14:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 19:14:32,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 19:14:32,100 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 484 flow. Second operand 8 states and 102 transitions. [2024-06-21 19:14:32,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 81 transitions, 763 flow [2024-06-21 19:14:32,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 726 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:32,104 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 547 flow [2024-06-21 19:14:32,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=547, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-06-21 19:14:32,105 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-21 19:14:32,105 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 547 flow [2024-06-21 19:14:32,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:32,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:32,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:32,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:14:32,106 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)] === [2024-06-21 19:14:32,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash -279804311, now seen corresponding path program 1 times [2024-06-21 19:14:32,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:32,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840864279] [2024-06-21 19:14:32,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:32,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:33,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:33,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840864279] [2024-06-21 19:14:33,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840864279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:33,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:33,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422763616] [2024-06-21 19:14:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:33,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:33,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:33,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 547 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) [2024-06-21 19:14:33,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:33,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:33,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:33,784 INFO L124 PetriNetUnfolderBase]: 227/409 cut-off events. [2024-06-21 19:14:33,785 INFO L125 PetriNetUnfolderBase]: For 3789/3789 co-relation queries the response was YES. [2024-06-21 19:14:33,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 409 events. 227/409 cut-off events. For 3789/3789 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1505 event pairs, 53 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1973. Up to 357 conditions per place. [2024-06-21 19:14:33,787 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-21 19:14:33,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 810 flow [2024-06-21 19:14:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-21 19:14:33,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-21 19:14:33,789 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 547 flow. Second operand 7 states and 85 transitions. [2024-06-21 19:14:33,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 810 flow [2024-06-21 19:14:33,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 754 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:33,794 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 589 flow [2024-06-21 19:14:33,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=589, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-06-21 19:14:33,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-21 19:14:33,795 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 589 flow [2024-06-21 19:14:33,795 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) [2024-06-21 19:14:33,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:33,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:33,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:14:33,796 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)] === [2024-06-21 19:14:33,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash -279714101, now seen corresponding path program 2 times [2024-06-21 19:14:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132072740] [2024-06-21 19:14:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:34,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:34,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132072740] [2024-06-21 19:14:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132072740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:34,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:34,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:34,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430136640] [2024-06-21 19:14:34,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:34,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:34,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:35,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:35,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 589 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) [2024-06-21 19:14:35,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:35,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:35,191 INFO L124 PetriNetUnfolderBase]: 225/406 cut-off events. [2024-06-21 19:14:35,191 INFO L125 PetriNetUnfolderBase]: For 4212/4212 co-relation queries the response was YES. [2024-06-21 19:14:35,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 406 events. 225/406 cut-off events. For 4212/4212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1499 event pairs, 53 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1991. Up to 366 conditions per place. [2024-06-21 19:14:35,193 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-21 19:14:35,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 776 flow [2024-06-21 19:14:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-21 19:14:35,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-21 19:14:35,195 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 589 flow. Second operand 7 states and 83 transitions. [2024-06-21 19:14:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 776 flow [2024-06-21 19:14:35,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 748 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:35,201 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 600 flow [2024-06-21 19:14:35,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2024-06-21 19:14:35,202 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-21 19:14:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 600 flow [2024-06-21 19:14:35,202 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) [2024-06-21 19:14:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:35,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:35,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:14:35,203 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)] === [2024-06-21 19:14:35,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash -871611729, now seen corresponding path program 1 times [2024-06-21 19:14:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550149777] [2024-06-21 19:14:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550149777] [2024-06-21 19:14:36,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550149777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:36,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:36,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:36,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418343905] [2024-06-21 19:14:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:36,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:36,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:36,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:36,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 600 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) [2024-06-21 19:14:36,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:36,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:36,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:36,728 INFO L124 PetriNetUnfolderBase]: 257/458 cut-off events. [2024-06-21 19:14:36,729 INFO L125 PetriNetUnfolderBase]: For 5485/5485 co-relation queries the response was YES. [2024-06-21 19:14:36,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 458 events. 257/458 cut-off events. For 5485/5485 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1728 event pairs, 55 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 2300. Up to 348 conditions per place. [2024-06-21 19:14:36,732 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 69 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-21 19:14:36,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 911 flow [2024-06-21 19:14:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:14:36,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-21 19:14:36,734 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 600 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:14:36,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 95 transitions, 911 flow [2024-06-21 19:14:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 876 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:36,743 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 681 flow [2024-06-21 19:14:36,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-06-21 19:14:36,743 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-21 19:14:36,744 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 681 flow [2024-06-21 19:14:36,744 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) [2024-06-21 19:14:36,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:36,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:36,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:14:36,744 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)] === [2024-06-21 19:14:36,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash -275989296, now seen corresponding path program 1 times [2024-06-21 19:14:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223511600] [2024-06-21 19:14:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:37,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:37,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:37,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223511600] [2024-06-21 19:14:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223511600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202709199] [2024-06-21 19:14:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:37,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:37,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 681 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) [2024-06-21 19:14:37,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:37,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:37,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:38,051 INFO L124 PetriNetUnfolderBase]: 260/463 cut-off events. [2024-06-21 19:14:38,051 INFO L125 PetriNetUnfolderBase]: For 5914/5914 co-relation queries the response was YES. [2024-06-21 19:14:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 463 events. 260/463 cut-off events. For 5914/5914 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1752 event pairs, 54 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2480. Up to 400 conditions per place. [2024-06-21 19:14:38,054 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-21 19:14:38,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 944 flow [2024-06-21 19:14:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:14:38,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:14:38,056 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 681 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:14:38,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 944 flow [2024-06-21 19:14:38,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 912 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:38,065 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 716 flow [2024-06-21 19:14:38,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=716, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-06-21 19:14:38,065 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-21 19:14:38,066 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 716 flow [2024-06-21 19:14:38,066 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) [2024-06-21 19:14:38,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:38,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:38,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:14:38,066 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)] === [2024-06-21 19:14:38,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash 220150634, now seen corresponding path program 2 times [2024-06-21 19:14:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:38,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002385702] [2024-06-21 19:14:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:38,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:38,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002385702] [2024-06-21 19:14:38,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002385702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:38,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:38,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288712429] [2024-06-21 19:14:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:38,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:38,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:38,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:38,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:38,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 716 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) [2024-06-21 19:14:38,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:38,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:38,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:39,136 INFO L124 PetriNetUnfolderBase]: 263/468 cut-off events. [2024-06-21 19:14:39,136 INFO L125 PetriNetUnfolderBase]: For 6551/6551 co-relation queries the response was YES. [2024-06-21 19:14:39,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 468 events. 263/468 cut-off events. For 6551/6551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1778 event pairs, 55 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2551. Up to 404 conditions per place. [2024-06-21 19:14:39,140 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 28 changer transitions 0/96 dead transitions. [2024-06-21 19:14:39,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 991 flow [2024-06-21 19:14:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-21 19:14:39,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-21 19:14:39,141 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 716 flow. Second operand 7 states and 88 transitions. [2024-06-21 19:14:39,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 991 flow [2024-06-21 19:14:39,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 935 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:39,152 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 765 flow [2024-06-21 19:14:39,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=765, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2024-06-21 19:14:39,152 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-21 19:14:39,152 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 765 flow [2024-06-21 19:14:39,153 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) [2024-06-21 19:14:39,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:39,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:39,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:14:39,153 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)] === [2024-06-21 19:14:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1463752944, now seen corresponding path program 3 times [2024-06-21 19:14:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:39,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782456635] [2024-06-21 19:14:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:39,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:40,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782456635] [2024-06-21 19:14:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782456635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:40,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946765104] [2024-06-21 19:14:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:40,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:40,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:40,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 765 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) [2024-06-21 19:14:40,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:40,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:40,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:40,398 INFO L124 PetriNetUnfolderBase]: 266/473 cut-off events. [2024-06-21 19:14:40,398 INFO L125 PetriNetUnfolderBase]: For 7239/7239 co-relation queries the response was YES. [2024-06-21 19:14:40,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 473 events. 266/473 cut-off events. For 7239/7239 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1798 event pairs, 53 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2644. Up to 445 conditions per place. [2024-06-21 19:14:40,403 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2024-06-21 19:14:40,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 989 flow [2024-06-21 19:14:40,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 19:14:40,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-21 19:14:40,405 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 765 flow. Second operand 8 states and 89 transitions. [2024-06-21 19:14:40,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 989 flow [2024-06-21 19:14:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 956 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 19:14:40,416 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 795 flow [2024-06-21 19:14:40,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-06-21 19:14:40,417 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-21 19:14:40,417 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 795 flow [2024-06-21 19:14:40,417 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) [2024-06-21 19:14:40,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:40,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:40,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:14:40,417 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)] === [2024-06-21 19:14:40,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash 468219193, now seen corresponding path program 2 times [2024-06-21 19:14:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193206688] [2024-06-21 19:14:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:41,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193206688] [2024-06-21 19:14:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193206688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:41,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:41,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331475137] [2024-06-21 19:14:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:41,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:41,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 795 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) [2024-06-21 19:14:41,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:41,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:41,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:41,884 INFO L124 PetriNetUnfolderBase]: 272/483 cut-off events. [2024-06-21 19:14:41,884 INFO L125 PetriNetUnfolderBase]: For 8220/8220 co-relation queries the response was YES. [2024-06-21 19:14:41,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2779 conditions, 483 events. 272/483 cut-off events. For 8220/8220 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1842 event pairs, 53 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2726. Up to 438 conditions per place. [2024-06-21 19:14:41,887 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-21 19:14:41,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 1107 flow [2024-06-21 19:14:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 19:14:41,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-21 19:14:41,889 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 795 flow. Second operand 9 states and 100 transitions. [2024-06-21 19:14:41,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 1107 flow [2024-06-21 19:14:41,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 103 transitions, 1070 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 19:14:41,900 INFO L231 Difference]: Finished difference. Result has 101 places, 93 transitions, 849 flow [2024-06-21 19:14:41,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=849, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2024-06-21 19:14:41,900 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-21 19:14:41,900 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 849 flow [2024-06-21 19:14:41,901 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) [2024-06-21 19:14:41,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:41,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:41,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:14:41,901 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)] === [2024-06-21 19:14:41,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash 475570626, now seen corresponding path program 4 times [2024-06-21 19:14:41,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:41,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321789659] [2024-06-21 19:14:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:42,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321789659] [2024-06-21 19:14:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321789659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:42,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951835464] [2024-06-21 19:14:42,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:42,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:42,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:42,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:42,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 849 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) [2024-06-21 19:14:42,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:42,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:42,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:43,088 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2024-06-21 19:14:43,088 INFO L125 PetriNetUnfolderBase]: For 8597/8597 co-relation queries the response was YES. [2024-06-21 19:14:43,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 480 events. 270/480 cut-off events. For 8597/8597 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1832 event pairs, 53 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2753. Up to 458 conditions per place. [2024-06-21 19:14:43,092 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-21 19:14:43,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 1061 flow [2024-06-21 19:14:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 19:14:43,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-21 19:14:43,093 INFO L175 Difference]: Start difference. First operand has 101 places, 93 transitions, 849 flow. Second operand 8 states and 87 transitions. [2024-06-21 19:14:43,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 1061 flow [2024-06-21 19:14:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 100 transitions, 1020 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:43,106 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 841 flow [2024-06-21 19:14:43,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-06-21 19:14:43,107 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-21 19:14:43,107 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 841 flow [2024-06-21 19:14:43,107 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) [2024-06-21 19:14:43,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:43,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:14:43,108 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)] === [2024-06-21 19:14:43,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1290077633, now seen corresponding path program 3 times [2024-06-21 19:14:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:43,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445615554] [2024-06-21 19:14:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:44,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445615554] [2024-06-21 19:14:44,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445615554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:44,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:44,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:44,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71621027] [2024-06-21 19:14:44,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:44,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:44,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:44,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 841 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) [2024-06-21 19:14:44,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:44,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:44,430 INFO L124 PetriNetUnfolderBase]: 279/495 cut-off events. [2024-06-21 19:14:44,431 INFO L125 PetriNetUnfolderBase]: For 9855/9855 co-relation queries the response was YES. [2024-06-21 19:14:44,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 495 events. 279/495 cut-off events. For 9855/9855 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1907 event pairs, 54 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2862. Up to 464 conditions per place. [2024-06-21 19:14:44,434 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 86 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-06-21 19:14:44,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 1117 flow [2024-06-21 19:14:44,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:44,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-21 19:14:44,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-21 19:14:44,436 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 841 flow. Second operand 9 states and 95 transitions. [2024-06-21 19:14:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 1117 flow [2024-06-21 19:14:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 1071 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:44,449 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 895 flow [2024-06-21 19:14:44,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=895, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-21 19:14:44,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-21 19:14:44,450 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 895 flow [2024-06-21 19:14:44,450 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) [2024-06-21 19:14:44,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:44,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:44,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:14:44,450 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)] === [2024-06-21 19:14:44,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash 475570843, now seen corresponding path program 4 times [2024-06-21 19:14:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171502744] [2024-06-21 19:14:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171502744] [2024-06-21 19:14:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171502744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:45,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16941380] [2024-06-21 19:14:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:45,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:45,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 895 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) [2024-06-21 19:14:45,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:45,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:45,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:45,931 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-21 19:14:45,931 INFO L125 PetriNetUnfolderBase]: For 9929/9929 co-relation queries the response was YES. [2024-06-21 19:14:45,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 489 events. 275/489 cut-off events. For 9929/9929 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1885 event pairs, 53 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2855. Up to 455 conditions per place. [2024-06-21 19:14:45,935 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 87 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-21 19:14:45,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 1127 flow [2024-06-21 19:14:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-21 19:14:45,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665 [2024-06-21 19:14:45,936 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 895 flow. Second operand 8 states and 91 transitions. [2024-06-21 19:14:45,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 1127 flow [2024-06-21 19:14:45,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 1025 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 19:14:45,950 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 832 flow [2024-06-21 19:14:45,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2024-06-21 19:14:45,951 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-21 19:14:45,951 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 832 flow [2024-06-21 19:14:45,951 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) [2024-06-21 19:14:45,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:45,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:45,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:14:45,952 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)] === [2024-06-21 19:14:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash -75246927, now seen corresponding path program 3 times [2024-06-21 19:14:45,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:45,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782527296] [2024-06-21 19:14:45,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:47,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:47,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782527296] [2024-06-21 19:14:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782527296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:47,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958420997] [2024-06-21 19:14:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:47,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:47,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:47,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:14:47,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:47,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:47,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:14:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:47,286 INFO L124 PetriNetUnfolderBase]: 278/494 cut-off events. [2024-06-21 19:14:47,287 INFO L125 PetriNetUnfolderBase]: For 10161/10161 co-relation queries the response was YES. [2024-06-21 19:14:47,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 494 events. 278/494 cut-off events. For 10161/10161 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1916 event pairs, 44 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2831. Up to 400 conditions per place. [2024-06-21 19:14:47,290 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 81 selfloop transitions, 30 changer transitions 0/113 dead transitions. [2024-06-21 19:14:47,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 113 transitions, 1168 flow [2024-06-21 19:14:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-21 19:14:47,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-21 19:14:47,291 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 832 flow. Second operand 7 states and 95 transitions. [2024-06-21 19:14:47,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 113 transitions, 1168 flow [2024-06-21 19:14:47,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 1131 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:47,306 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 899 flow [2024-06-21 19:14:47,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=899, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2024-06-21 19:14:47,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-21 19:14:47,306 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 899 flow [2024-06-21 19:14:47,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:47,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:47,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:14:47,307 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)] === [2024-06-21 19:14:47,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -74839587, now seen corresponding path program 4 times [2024-06-21 19:14:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243248159] [2024-06-21 19:14:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:48,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243248159] [2024-06-21 19:14:48,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243248159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359009777] [2024-06-21 19:14:48,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:48,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:14:48,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 899 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:48,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:48,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:14:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:48,575 INFO L124 PetriNetUnfolderBase]: 276/491 cut-off events. [2024-06-21 19:14:48,575 INFO L125 PetriNetUnfolderBase]: For 10699/10699 co-relation queries the response was YES. [2024-06-21 19:14:48,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 491 events. 276/491 cut-off events. For 10699/10699 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1900 event pairs, 42 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 2883. Up to 424 conditions per place. [2024-06-21 19:14:48,579 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 81 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2024-06-21 19:14:48,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 109 transitions, 1133 flow [2024-06-21 19:14:48,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:14:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:14:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-21 19:14:48,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:14:48,581 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 899 flow. Second operand 7 states and 91 transitions. [2024-06-21 19:14:48,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 109 transitions, 1133 flow [2024-06-21 19:14:48,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 1092 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:48,596 INFO L231 Difference]: Finished difference. Result has 110 places, 101 transitions, 918 flow [2024-06-21 19:14:48,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=918, PETRI_PLACES=110, PETRI_TRANSITIONS=101} [2024-06-21 19:14:48,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-21 19:14:48,596 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 101 transitions, 918 flow [2024-06-21 19:14:48,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:48,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:48,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:48,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:14:48,597 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)] === [2024-06-21 19:14:48,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash 993874982, now seen corresponding path program 5 times [2024-06-21 19:14:48,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:48,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446505688] [2024-06-21 19:14:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446505688] [2024-06-21 19:14:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446505688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:14:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769638571] [2024-06-21 19:14:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:14:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:14:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:14:49,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:49,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 101 transitions, 918 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) [2024-06-21 19:14:49,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:49,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:49,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:50,128 INFO L124 PetriNetUnfolderBase]: 283/503 cut-off events. [2024-06-21 19:14:50,128 INFO L125 PetriNetUnfolderBase]: For 10696/10696 co-relation queries the response was YES. [2024-06-21 19:14:50,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3018 conditions, 503 events. 283/503 cut-off events. For 10696/10696 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1966 event pairs, 43 based on Foata normal form. 1/503 useless extension candidates. Maximal degree in co-relation 2962. Up to 398 conditions per place. [2024-06-21 19:14:50,132 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 79 selfloop transitions, 37 changer transitions 0/118 dead transitions. [2024-06-21 19:14:50,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 1275 flow [2024-06-21 19:14:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-21 19:14:50,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 19:14:50,133 INFO L175 Difference]: Start difference. First operand has 110 places, 101 transitions, 918 flow. Second operand 8 states and 102 transitions. [2024-06-21 19:14:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 1275 flow [2024-06-21 19:14:50,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 118 transitions, 1198 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:50,149 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 986 flow [2024-06-21 19:14:50,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2024-06-21 19:14:50,150 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2024-06-21 19:14:50,150 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 986 flow [2024-06-21 19:14:50,150 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) [2024-06-21 19:14:50,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:50,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:50,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:14:50,150 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)] === [2024-06-21 19:14:50,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 993621092, now seen corresponding path program 6 times [2024-06-21 19:14:50,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558248094] [2024-06-21 19:14:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:50,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:51,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:51,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558248094] [2024-06-21 19:14:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558248094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677590488] [2024-06-21 19:14:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:51,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:51,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 986 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) [2024-06-21 19:14:51,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:51,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:51,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:52,005 INFO L124 PetriNetUnfolderBase]: 281/501 cut-off events. [2024-06-21 19:14:52,005 INFO L125 PetriNetUnfolderBase]: For 10509/10509 co-relation queries the response was YES. [2024-06-21 19:14:52,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 501 events. 281/501 cut-off events. For 10509/10509 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1968 event pairs, 45 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 2964. Up to 396 conditions per place. [2024-06-21 19:14:52,012 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 77 selfloop transitions, 38 changer transitions 0/117 dead transitions. [2024-06-21 19:14:52,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 1244 flow [2024-06-21 19:14:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 19:14:52,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-21 19:14:52,013 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 986 flow. Second operand 9 states and 109 transitions. [2024-06-21 19:14:52,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 1244 flow [2024-06-21 19:14:52,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1174 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:52,033 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 997 flow [2024-06-21 19:14:52,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=997, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2024-06-21 19:14:52,038 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2024-06-21 19:14:52,038 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 997 flow [2024-06-21 19:14:52,038 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) [2024-06-21 19:14:52,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:52,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:52,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:14:52,039 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)] === [2024-06-21 19:14:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash 981109089, now seen corresponding path program 5 times [2024-06-21 19:14:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700570313] [2024-06-21 19:14:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:53,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700570313] [2024-06-21 19:14:53,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700570313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:53,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:53,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:53,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560825483] [2024-06-21 19:14:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:53,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:53,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:53,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:53,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 997 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) [2024-06-21 19:14:53,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:53,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:53,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:53,787 INFO L124 PetriNetUnfolderBase]: 288/512 cut-off events. [2024-06-21 19:14:53,787 INFO L125 PetriNetUnfolderBase]: For 11967/11967 co-relation queries the response was YES. [2024-06-21 19:14:53,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 512 events. 288/512 cut-off events. For 11967/11967 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2021 event pairs, 46 based on Foata normal form. 4/515 useless extension candidates. Maximal degree in co-relation 3015. Up to 317 conditions per place. [2024-06-21 19:14:53,791 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 42 changer transitions 0/127 dead transitions. [2024-06-21 19:14:53,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 127 transitions, 1447 flow [2024-06-21 19:14:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 19:14:53,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-21 19:14:53,793 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 997 flow. Second operand 9 states and 118 transitions. [2024-06-21 19:14:53,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 127 transitions, 1447 flow [2024-06-21 19:14:53,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 127 transitions, 1372 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:14:53,815 INFO L231 Difference]: Finished difference. Result has 119 places, 111 transitions, 1070 flow [2024-06-21 19:14:53,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1070, PETRI_PLACES=119, PETRI_TRANSITIONS=111} [2024-06-21 19:14:53,817 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-21 19:14:53,818 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 111 transitions, 1070 flow [2024-06-21 19:14:53,818 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) [2024-06-21 19:14:53,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:53,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:53,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:14:53,818 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)] === [2024-06-21 19:14:53,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2144241115, now seen corresponding path program 1 times [2024-06-21 19:14:53,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:53,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268206483] [2024-06-21 19:14:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:53,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:55,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:55,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268206483] [2024-06-21 19:14:55,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268206483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:55,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:14:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700383304] [2024-06-21 19:14:55,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:55,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:14:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:14:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:14:55,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:55,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 111 transitions, 1070 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) [2024-06-21 19:14:55,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:55,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:55,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:56,143 INFO L124 PetriNetUnfolderBase]: 285/507 cut-off events. [2024-06-21 19:14:56,144 INFO L125 PetriNetUnfolderBase]: For 11238/11238 co-relation queries the response was YES. [2024-06-21 19:14:56,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3098 conditions, 507 events. 285/507 cut-off events. For 11238/11238 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1974 event pairs, 58 based on Foata normal form. 2/508 useless extension candidates. Maximal degree in co-relation 3038. Up to 479 conditions per place. [2024-06-21 19:14:56,147 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 103 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2024-06-21 19:14:56,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 119 transitions, 1322 flow [2024-06-21 19:14:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:14:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:14:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-21 19:14:56,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-21 19:14:56,148 INFO L175 Difference]: Start difference. First operand has 119 places, 111 transitions, 1070 flow. Second operand 9 states and 93 transitions. [2024-06-21 19:14:56,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 119 transitions, 1322 flow [2024-06-21 19:14:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 119 transitions, 1248 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-21 19:14:56,168 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 1028 flow [2024-06-21 19:14:56,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1028, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2024-06-21 19:14:56,169 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-21 19:14:56,169 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 1028 flow [2024-06-21 19:14:56,169 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) [2024-06-21 19:14:56,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:56,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:56,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:14:56,169 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)] === [2024-06-21 19:14:56,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1208104863, now seen corresponding path program 1 times [2024-06-21 19:14:56,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:56,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966970960] [2024-06-21 19:14:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:57,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:57,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966970960] [2024-06-21 19:14:57,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966970960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:57,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:57,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:57,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042068615] [2024-06-21 19:14:57,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:57,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:57,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 1028 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:57,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:57,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:57,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:57,732 INFO L124 PetriNetUnfolderBase]: 305/547 cut-off events. [2024-06-21 19:14:57,733 INFO L125 PetriNetUnfolderBase]: For 12840/12840 co-relation queries the response was YES. [2024-06-21 19:14:57,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 547 events. 305/547 cut-off events. For 12840/12840 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2242 event pairs, 62 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3192. Up to 461 conditions per place. [2024-06-21 19:14:57,736 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 104 selfloop transitions, 22 changer transitions 0/128 dead transitions. [2024-06-21 19:14:57,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1398 flow [2024-06-21 19:14:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:14:57,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:14:57,737 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 1028 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:14:57,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1398 flow [2024-06-21 19:14:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 1361 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 19:14:57,760 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 1079 flow [2024-06-21 19:14:57,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1079, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2024-06-21 19:14:57,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2024-06-21 19:14:57,761 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 1079 flow [2024-06-21 19:14:57,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:57,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:57,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:57,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:14:57,762 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)] === [2024-06-21 19:14:57,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1205363223, now seen corresponding path program 2 times [2024-06-21 19:14:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628139825] [2024-06-21 19:14:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:57,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:14:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:14:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:14:58,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628139825] [2024-06-21 19:14:58,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628139825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:14:58,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:14:58,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:14:58,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156297343] [2024-06-21 19:14:58,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:14:58,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:14:58,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:14:58,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:14:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:14:59,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:14:59,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 1079 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:59,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:14:59,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:14:59,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:14:59,258 INFO L124 PetriNetUnfolderBase]: 309/555 cut-off events. [2024-06-21 19:14:59,259 INFO L125 PetriNetUnfolderBase]: For 13733/13733 co-relation queries the response was YES. [2024-06-21 19:14:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 555 events. 309/555 cut-off events. For 13733/13733 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2299 event pairs, 66 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3305. Up to 498 conditions per place. [2024-06-21 19:14:59,262 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 104 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-21 19:14:59,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1366 flow [2024-06-21 19:14:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:14:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:14:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 19:14:59,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-21 19:14:59,263 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 1079 flow. Second operand 8 states and 93 transitions. [2024-06-21 19:14:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1366 flow [2024-06-21 19:14:59,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 126 transitions, 1326 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 19:14:59,285 INFO L231 Difference]: Finished difference. Result has 128 places, 116 transitions, 1098 flow [2024-06-21 19:14:59,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=128, PETRI_TRANSITIONS=116} [2024-06-21 19:14:59,285 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-21 19:14:59,285 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 116 transitions, 1098 flow [2024-06-21 19:14:59,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:14:59,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:14:59,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:14:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 19:14:59,286 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)] === [2024-06-21 19:14:59,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:14:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash -83998065, now seen corresponding path program 1 times [2024-06-21 19:14:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:14:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175531743] [2024-06-21 19:14:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:14:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:14:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:00,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:00,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175531743] [2024-06-21 19:15:00,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175531743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:00,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:00,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:00,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437311347] [2024-06-21 19:15:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:00,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:00,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:00,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:00,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 116 transitions, 1098 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:00,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:00,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:01,056 INFO L124 PetriNetUnfolderBase]: 317/568 cut-off events. [2024-06-21 19:15:01,056 INFO L125 PetriNetUnfolderBase]: For 14653/14653 co-relation queries the response was YES. [2024-06-21 19:15:01,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3476 conditions, 568 events. 317/568 cut-off events. For 14653/14653 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2372 event pairs, 67 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3411. Up to 471 conditions per place. [2024-06-21 19:15:01,060 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 97 selfloop transitions, 31 changer transitions 0/130 dead transitions. [2024-06-21 19:15:01,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1460 flow [2024-06-21 19:15:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:01,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-21 19:15:01,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-21 19:15:01,062 INFO L175 Difference]: Start difference. First operand has 128 places, 116 transitions, 1098 flow. Second operand 8 states and 97 transitions. [2024-06-21 19:15:01,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1460 flow [2024-06-21 19:15:01,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1418 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:01,087 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1147 flow [2024-06-21 19:15:01,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1147, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-21 19:15:01,088 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-21 19:15:01,088 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1147 flow [2024-06-21 19:15:01,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:01,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:01,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:01,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 19:15:01,088 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)] === [2024-06-21 19:15:01,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1205243129, now seen corresponding path program 2 times [2024-06-21 19:15:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:01,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272113572] [2024-06-21 19:15:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:01,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272113572] [2024-06-21 19:15:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272113572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:02,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:02,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823747112] [2024-06-21 19:15:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:02,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:02,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:02,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1147 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:02,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:02,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:02,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:02,594 INFO L124 PetriNetUnfolderBase]: 325/581 cut-off events. [2024-06-21 19:15:02,595 INFO L125 PetriNetUnfolderBase]: For 16069/16069 co-relation queries the response was YES. [2024-06-21 19:15:02,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 581 events. 325/581 cut-off events. For 16069/16069 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2430 event pairs, 70 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 3566. Up to 504 conditions per place. [2024-06-21 19:15:02,598 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 100 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-21 19:15:02,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 1528 flow [2024-06-21 19:15:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-21 19:15:02,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-21 19:15:02,617 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1147 flow. Second operand 8 states and 98 transitions. [2024-06-21 19:15:02,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 1528 flow [2024-06-21 19:15:02,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 1488 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-21 19:15:02,644 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 1232 flow [2024-06-21 19:15:02,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-06-21 19:15:02,645 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-21 19:15:02,645 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 1232 flow [2024-06-21 19:15:02,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:02,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:02,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:02,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 19:15:02,645 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)] === [2024-06-21 19:15:02,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:02,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247779, now seen corresponding path program 3 times [2024-06-21 19:15:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:02,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102587447] [2024-06-21 19:15:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:03,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:03,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102587447] [2024-06-21 19:15:03,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102587447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:03,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:03,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820735243] [2024-06-21 19:15:03,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:03,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:03,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:04,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:04,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 1232 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:04,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:04,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:04,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:04,187 INFO L124 PetriNetUnfolderBase]: 328/586 cut-off events. [2024-06-21 19:15:04,187 INFO L125 PetriNetUnfolderBase]: For 17162/17162 co-relation queries the response was YES. [2024-06-21 19:15:04,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 586 events. 328/586 cut-off events. For 17162/17162 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2445 event pairs, 67 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 3748. Up to 513 conditions per place. [2024-06-21 19:15:04,191 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 100 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-21 19:15:04,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 134 transitions, 1532 flow [2024-06-21 19:15:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 19:15:04,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:15:04,192 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 1232 flow. Second operand 8 states and 96 transitions. [2024-06-21 19:15:04,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 134 transitions, 1532 flow [2024-06-21 19:15:04,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 134 transitions, 1486 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:04,222 INFO L231 Difference]: Finished difference. Result has 138 places, 126 transitions, 1275 flow [2024-06-21 19:15:04,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1275, PETRI_PLACES=138, PETRI_TRANSITIONS=126} [2024-06-21 19:15:04,223 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-21 19:15:04,223 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 126 transitions, 1275 flow [2024-06-21 19:15:04,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:04,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:04,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:04,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 19:15:04,224 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)] === [2024-06-21 19:15:04,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:04,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247903, now seen corresponding path program 3 times [2024-06-21 19:15:04,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:04,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141316455] [2024-06-21 19:15:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:04,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:05,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:05,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141316455] [2024-06-21 19:15:05,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141316455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:05,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:05,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:05,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777707331] [2024-06-21 19:15:05,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:05,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:05,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:06,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:06,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 1275 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:06,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:06,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:06,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:06,295 INFO L124 PetriNetUnfolderBase]: 325/581 cut-off events. [2024-06-21 19:15:06,296 INFO L125 PetriNetUnfolderBase]: For 17704/17704 co-relation queries the response was YES. [2024-06-21 19:15:06,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 581 events. 325/581 cut-off events. For 17704/17704 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2432 event pairs, 65 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3702. Up to 535 conditions per place. [2024-06-21 19:15:06,321 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 115 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-06-21 19:15:06,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1563 flow [2024-06-21 19:15:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 19:15:06,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-21 19:15:06,324 INFO L175 Difference]: Start difference. First operand has 138 places, 126 transitions, 1275 flow. Second operand 8 states and 92 transitions. [2024-06-21 19:15:06,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1563 flow [2024-06-21 19:15:06,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 1492 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:06,388 INFO L231 Difference]: Finished difference. Result has 140 places, 126 transitions, 1244 flow [2024-06-21 19:15:06,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1244, PETRI_PLACES=140, PETRI_TRANSITIONS=126} [2024-06-21 19:15:06,388 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-21 19:15:06,389 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 126 transitions, 1244 flow [2024-06-21 19:15:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:06,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:06,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:06,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 19:15:06,389 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)] === [2024-06-21 19:15:06,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash 34089615, now seen corresponding path program 4 times [2024-06-21 19:15:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474923414] [2024-06-21 19:15:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:06,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:07,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474923414] [2024-06-21 19:15:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474923414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:07,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474854445] [2024-06-21 19:15:07,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:07,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:07,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:07,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 126 transitions, 1244 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:07,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:07,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:07,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:08,033 INFO L124 PetriNetUnfolderBase]: 328/586 cut-off events. [2024-06-21 19:15:08,033 INFO L125 PetriNetUnfolderBase]: For 18053/18053 co-relation queries the response was YES. [2024-06-21 19:15:08,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 586 events. 328/586 cut-off events. For 18053/18053 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2458 event pairs, 66 based on Foata normal form. 1/586 useless extension candidates. Maximal degree in co-relation 3724. Up to 501 conditions per place. [2024-06-21 19:15:08,037 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 101 selfloop transitions, 36 changer transitions 0/139 dead transitions. [2024-06-21 19:15:08,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 139 transitions, 1636 flow [2024-06-21 19:15:08,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-21 19:15:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 19:15:08,041 INFO L175 Difference]: Start difference. First operand has 140 places, 126 transitions, 1244 flow. Second operand 8 states and 100 transitions. [2024-06-21 19:15:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 139 transitions, 1636 flow [2024-06-21 19:15:08,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 139 transitions, 1598 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:08,078 INFO L231 Difference]: Finished difference. Result has 142 places, 128 transitions, 1303 flow [2024-06-21 19:15:08,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1303, PETRI_PLACES=142, PETRI_TRANSITIONS=128} [2024-06-21 19:15:08,079 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-06-21 19:15:08,079 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 128 transitions, 1303 flow [2024-06-21 19:15:08,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:08,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:08,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:08,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 19:15:08,080 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)] === [2024-06-21 19:15:08,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 34094265, now seen corresponding path program 5 times [2024-06-21 19:15:08,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:08,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443531688] [2024-06-21 19:15:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:09,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:09,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443531688] [2024-06-21 19:15:09,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443531688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:09,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:09,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:09,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862855307] [2024-06-21 19:15:09,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:09,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:09,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:09,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 128 transitions, 1303 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:09,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:09,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:09,396 INFO L124 PetriNetUnfolderBase]: 331/591 cut-off events. [2024-06-21 19:15:09,396 INFO L125 PetriNetUnfolderBase]: For 19085/19085 co-relation queries the response was YES. [2024-06-21 19:15:09,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 591 events. 331/591 cut-off events. For 19085/19085 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2486 event pairs, 68 based on Foata normal form. 1/591 useless extension candidates. Maximal degree in co-relation 3820. Up to 524 conditions per place. [2024-06-21 19:15:09,400 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 32 changer transitions 0/139 dead transitions. [2024-06-21 19:15:09,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 139 transitions, 1625 flow [2024-06-21 19:15:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:09,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-21 19:15:09,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-21 19:15:09,402 INFO L175 Difference]: Start difference. First operand has 142 places, 128 transitions, 1303 flow. Second operand 9 states and 102 transitions. [2024-06-21 19:15:09,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 139 transitions, 1625 flow [2024-06-21 19:15:09,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 1532 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:09,440 INFO L231 Difference]: Finished difference. Result has 145 places, 130 transitions, 1307 flow [2024-06-21 19:15:09,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=145, PETRI_TRANSITIONS=130} [2024-06-21 19:15:09,440 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-21 19:15:09,440 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 130 transitions, 1307 flow [2024-06-21 19:15:09,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:09,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:09,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 19:15:09,441 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)] === [2024-06-21 19:15:09,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1089772283, now seen corresponding path program 1 times [2024-06-21 19:15:09,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416119661] [2024-06-21 19:15:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:10,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:10,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416119661] [2024-06-21 19:15:10,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416119661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:10,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:10,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:10,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554709399] [2024-06-21 19:15:10,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:10,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:10,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:10,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:10,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:10,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 130 transitions, 1307 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) [2024-06-21 19:15:10,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:10,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:10,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:11,370 INFO L124 PetriNetUnfolderBase]: 347/617 cut-off events. [2024-06-21 19:15:11,370 INFO L125 PetriNetUnfolderBase]: For 22090/22090 co-relation queries the response was YES. [2024-06-21 19:15:11,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4104 conditions, 617 events. 347/617 cut-off events. For 22090/22090 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2633 event pairs, 68 based on Foata normal form. 2/618 useless extension candidates. Maximal degree in co-relation 4031. Up to 473 conditions per place. [2024-06-21 19:15:11,374 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2024-06-21 19:15:11,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1843 flow [2024-06-21 19:15:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 19:15:11,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-21 19:15:11,375 INFO L175 Difference]: Start difference. First operand has 145 places, 130 transitions, 1307 flow. Second operand 12 states and 137 transitions. [2024-06-21 19:15:11,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1843 flow [2024-06-21 19:15:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 1770 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:11,419 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1351 flow [2024-06-21 19:15:11,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1351, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-21 19:15:11,419 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-21 19:15:11,419 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1351 flow [2024-06-21 19:15:11,420 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) [2024-06-21 19:15:11,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:11,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 19:15:11,420 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)] === [2024-06-21 19:15:11,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash 34094451, now seen corresponding path program 2 times [2024-06-21 19:15:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515393561] [2024-06-21 19:15:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:12,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515393561] [2024-06-21 19:15:12,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515393561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:12,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:12,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322953049] [2024-06-21 19:15:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:12,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:12,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1351 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:12,811 INFO L124 PetriNetUnfolderBase]: 353/627 cut-off events. [2024-06-21 19:15:12,824 INFO L125 PetriNetUnfolderBase]: For 23417/23417 co-relation queries the response was YES. [2024-06-21 19:15:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4217 conditions, 627 events. 353/627 cut-off events. For 23417/23417 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2676 event pairs, 67 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 4143. Up to 479 conditions per place. [2024-06-21 19:15:12,828 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 43 changer transitions 0/150 dead transitions. [2024-06-21 19:15:12,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 150 transitions, 1793 flow [2024-06-21 19:15:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 19:15:12,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-21 19:15:12,842 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1351 flow. Second operand 9 states and 109 transitions. [2024-06-21 19:15:12,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 150 transitions, 1793 flow [2024-06-21 19:15:12,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 1702 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:12,887 INFO L231 Difference]: Finished difference. Result has 150 places, 136 transitions, 1375 flow [2024-06-21 19:15:12,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1375, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2024-06-21 19:15:12,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-21 19:15:12,887 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 1375 flow [2024-06-21 19:15:12,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:12,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:12,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:12,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 19:15:12,888 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)] === [2024-06-21 19:15:12,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1250165721, now seen corresponding path program 6 times [2024-06-21 19:15:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:12,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422630041] [2024-06-21 19:15:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422630041] [2024-06-21 19:15:14,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422630041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777066900] [2024-06-21 19:15:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:14,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:14,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:14,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:14,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 1375 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) [2024-06-21 19:15:14,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:14,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:14,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:14,510 INFO L124 PetriNetUnfolderBase]: 356/632 cut-off events. [2024-06-21 19:15:14,510 INFO L125 PetriNetUnfolderBase]: For 23819/23819 co-relation queries the response was YES. [2024-06-21 19:15:14,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 632 events. 356/632 cut-off events. For 23819/23819 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2702 event pairs, 71 based on Foata normal form. 1/632 useless extension candidates. Maximal degree in co-relation 4195. Up to 565 conditions per place. [2024-06-21 19:15:14,514 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 116 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-06-21 19:15:14,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 147 transitions, 1711 flow [2024-06-21 19:15:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:14,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:15:14,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:15:14,516 INFO L175 Difference]: Start difference. First operand has 150 places, 136 transitions, 1375 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:15:14,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 147 transitions, 1711 flow [2024-06-21 19:15:14,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 147 transitions, 1641 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:14,561 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1396 flow [2024-06-21 19:15:14,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1305, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1396, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-21 19:15:14,562 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-21 19:15:14,562 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1396 flow [2024-06-21 19:15:14,562 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) [2024-06-21 19:15:14,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:14,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:14,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 19:15:14,562 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)] === [2024-06-21 19:15:14,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1250165535, now seen corresponding path program 3 times [2024-06-21 19:15:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:14,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141976590] [2024-06-21 19:15:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:15,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141976590] [2024-06-21 19:15:15,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141976590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:15,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:15,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352633054] [2024-06-21 19:15:15,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:15,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:15,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:15,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:15,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:15,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:15,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1396 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) [2024-06-21 19:15:15,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:15,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:15,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:16,104 INFO L124 PetriNetUnfolderBase]: 352/626 cut-off events. [2024-06-21 19:15:16,105 INFO L125 PetriNetUnfolderBase]: For 24243/24243 co-relation queries the response was YES. [2024-06-21 19:15:16,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4174 conditions, 626 events. 352/626 cut-off events. For 24243/24243 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2682 event pairs, 69 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4098. Up to 481 conditions per place. [2024-06-21 19:15:16,109 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-21 19:15:16,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 1822 flow [2024-06-21 19:15:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 19:15:16,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-21 19:15:16,134 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1396 flow. Second operand 10 states and 119 transitions. [2024-06-21 19:15:16,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 1822 flow [2024-06-21 19:15:16,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1749 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:16,179 INFO L231 Difference]: Finished difference. Result has 156 places, 138 transitions, 1402 flow [2024-06-21 19:15:16,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1323, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1402, PETRI_PLACES=156, PETRI_TRANSITIONS=138} [2024-06-21 19:15:16,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-21 19:15:16,180 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 138 transitions, 1402 flow [2024-06-21 19:15:16,180 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) [2024-06-21 19:15:16,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:16,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 19:15:16,180 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)] === [2024-06-21 19:15:16,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1810483043, now seen corresponding path program 4 times [2024-06-21 19:15:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769353627] [2024-06-21 19:15:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:17,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:17,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769353627] [2024-06-21 19:15:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769353627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:17,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:17,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:17,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456062805] [2024-06-21 19:15:17,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:17,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:17,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:17,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:17,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 138 transitions, 1402 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) [2024-06-21 19:15:17,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:17,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:17,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:17,916 INFO L124 PetriNetUnfolderBase]: 368/652 cut-off events. [2024-06-21 19:15:17,917 INFO L125 PetriNetUnfolderBase]: For 27197/27197 co-relation queries the response was YES. [2024-06-21 19:15:17,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 652 events. 368/652 cut-off events. For 27197/27197 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2815 event pairs, 67 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4370. Up to 586 conditions per place. [2024-06-21 19:15:17,921 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 129 selfloop transitions, 27 changer transitions 0/158 dead transitions. [2024-06-21 19:15:17,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 1894 flow [2024-06-21 19:15:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 19:15:17,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-21 19:15:17,949 INFO L175 Difference]: Start difference. First operand has 156 places, 138 transitions, 1402 flow. Second operand 12 states and 129 transitions. [2024-06-21 19:15:17,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 1894 flow [2024-06-21 19:15:17,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 1812 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:18,001 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 1431 flow [2024-06-21 19:15:18,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1431, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2024-06-21 19:15:18,001 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-21 19:15:18,001 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 1431 flow [2024-06-21 19:15:18,002 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) [2024-06-21 19:15:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:18,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 19:15:18,002 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)] === [2024-06-21 19:15:18,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1629887197, now seen corresponding path program 7 times [2024-06-21 19:15:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703925564] [2024-06-21 19:15:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703925564] [2024-06-21 19:15:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703925564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503373970] [2024-06-21 19:15:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:19,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:19,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:19,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 1431 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) [2024-06-21 19:15:19,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:19,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:19,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:19,532 INFO L124 PetriNetUnfolderBase]: 371/657 cut-off events. [2024-06-21 19:15:19,532 INFO L125 PetriNetUnfolderBase]: For 27536/27536 co-relation queries the response was YES. [2024-06-21 19:15:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4482 conditions, 657 events. 371/657 cut-off events. For 27536/27536 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2841 event pairs, 71 based on Foata normal form. 1/657 useless extension candidates. Maximal degree in co-relation 4404. Up to 626 conditions per place. [2024-06-21 19:15:19,536 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 19 changer transitions 0/152 dead transitions. [2024-06-21 19:15:19,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 152 transitions, 1777 flow [2024-06-21 19:15:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 19:15:19,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-21 19:15:19,538 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 1431 flow. Second operand 9 states and 98 transitions. [2024-06-21 19:15:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 152 transitions, 1777 flow [2024-06-21 19:15:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1735 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:19,599 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1464 flow [2024-06-21 19:15:19,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-06-21 19:15:19,600 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-21 19:15:19,600 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1464 flow [2024-06-21 19:15:19,600 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) [2024-06-21 19:15:19,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:19,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:19,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 19:15:19,600 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)] === [2024-06-21 19:15:19,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash 199906565, now seen corresponding path program 5 times [2024-06-21 19:15:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736443773] [2024-06-21 19:15:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736443773] [2024-06-21 19:15:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736443773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195981980] [2024-06-21 19:15:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:20,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:20,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:20,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1464 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) [2024-06-21 19:15:20,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:20,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:20,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:21,078 INFO L124 PetriNetUnfolderBase]: 367/651 cut-off events. [2024-06-21 19:15:21,079 INFO L125 PetriNetUnfolderBase]: For 27904/27904 co-relation queries the response was YES. [2024-06-21 19:15:21,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 651 events. 367/651 cut-off events. For 27904/27904 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2831 event pairs, 68 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 4331. Up to 611 conditions per place. [2024-06-21 19:15:21,083 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-21 19:15:21,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1806 flow [2024-06-21 19:15:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-21 19:15:21,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-21 19:15:21,084 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1464 flow. Second operand 9 states and 101 transitions. [2024-06-21 19:15:21,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1806 flow [2024-06-21 19:15:21,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 155 transitions, 1749 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:21,144 INFO L231 Difference]: Finished difference. Result has 163 places, 146 transitions, 1481 flow [2024-06-21 19:15:21,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1481, PETRI_PLACES=163, PETRI_TRANSITIONS=146} [2024-06-21 19:15:21,144 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-21 19:15:21,145 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 146 transitions, 1481 flow [2024-06-21 19:15:21,145 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) [2024-06-21 19:15:21,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:21,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:21,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 19:15:21,145 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)] === [2024-06-21 19:15:21,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:21,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1345980881, now seen corresponding path program 6 times [2024-06-21 19:15:21,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:21,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903427227] [2024-06-21 19:15:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:21,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903427227] [2024-06-21 19:15:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903427227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:22,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:22,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:22,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816729776] [2024-06-21 19:15:22,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:22,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:22,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 146 transitions, 1481 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) [2024-06-21 19:15:22,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:22,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:22,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:22,749 INFO L124 PetriNetUnfolderBase]: 373/661 cut-off events. [2024-06-21 19:15:22,749 INFO L125 PetriNetUnfolderBase]: For 29183/29183 co-relation queries the response was YES. [2024-06-21 19:15:22,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 661 events. 373/661 cut-off events. For 29183/29183 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2875 event pairs, 67 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4426. Up to 598 conditions per place. [2024-06-21 19:15:22,754 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 134 selfloop transitions, 24 changer transitions 0/160 dead transitions. [2024-06-21 19:15:22,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 160 transitions, 1945 flow [2024-06-21 19:15:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:15:22,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-21 19:15:22,768 INFO L175 Difference]: Start difference. First operand has 163 places, 146 transitions, 1481 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:15:22,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 160 transitions, 1945 flow [2024-06-21 19:15:22,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 160 transitions, 1910 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:22,829 INFO L231 Difference]: Finished difference. Result has 166 places, 148 transitions, 1523 flow [2024-06-21 19:15:22,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1523, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2024-06-21 19:15:22,830 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-21 19:15:22,830 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 1523 flow [2024-06-21 19:15:22,830 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) [2024-06-21 19:15:22,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:22,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:22,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 19:15:22,831 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)] === [2024-06-21 19:15:22,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1345981067, now seen corresponding path program 8 times [2024-06-21 19:15:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:22,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632115352] [2024-06-21 19:15:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:24,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632115352] [2024-06-21 19:15:24,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632115352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488134775] [2024-06-21 19:15:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:24,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:24,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 1523 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) [2024-06-21 19:15:24,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:24,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:24,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:24,338 INFO L124 PetriNetUnfolderBase]: 371/658 cut-off events. [2024-06-21 19:15:24,338 INFO L125 PetriNetUnfolderBase]: For 28586/28586 co-relation queries the response was YES. [2024-06-21 19:15:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 658 events. 371/658 cut-off events. For 28586/28586 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2863 event pairs, 70 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 4414. Up to 633 conditions per place. [2024-06-21 19:15:24,343 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-21 19:15:24,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 156 transitions, 1849 flow [2024-06-21 19:15:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 19:15:24,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-21 19:15:24,344 INFO L175 Difference]: Start difference. First operand has 166 places, 148 transitions, 1523 flow. Second operand 9 states and 96 transitions. [2024-06-21 19:15:24,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 156 transitions, 1849 flow [2024-06-21 19:15:24,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1708 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-21 19:15:24,406 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1419 flow [2024-06-21 19:15:24,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1419, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-21 19:15:24,407 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-21 19:15:24,407 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1419 flow [2024-06-21 19:15:24,407 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) [2024-06-21 19:15:24,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:24,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:24,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 19:15:24,407 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)] === [2024-06-21 19:15:24,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1857795043, now seen corresponding path program 7 times [2024-06-21 19:15:24,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:24,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376014191] [2024-06-21 19:15:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:25,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376014191] [2024-06-21 19:15:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376014191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:25,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:25,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:25,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673516510] [2024-06-21 19:15:25,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:25,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:25,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:25,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:25,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:25,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1419 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) [2024-06-21 19:15:25,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:25,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:25,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:26,187 INFO L124 PetriNetUnfolderBase]: 372/660 cut-off events. [2024-06-21 19:15:26,188 INFO L125 PetriNetUnfolderBase]: For 29442/29442 co-relation queries the response was YES. [2024-06-21 19:15:26,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4357 conditions, 660 events. 372/660 cut-off events. For 29442/29442 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2879 event pairs, 67 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4275. Up to 598 conditions per place. [2024-06-21 19:15:26,193 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 135 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-06-21 19:15:26,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 161 transitions, 1875 flow [2024-06-21 19:15:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:15:26,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:15:26,201 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1419 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:15:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 161 transitions, 1875 flow [2024-06-21 19:15:26,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1830 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:26,271 INFO L231 Difference]: Finished difference. Result has 167 places, 150 transitions, 1443 flow [2024-06-21 19:15:26,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1443, PETRI_PLACES=167, PETRI_TRANSITIONS=150} [2024-06-21 19:15:26,271 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-21 19:15:26,272 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 150 transitions, 1443 flow [2024-06-21 19:15:26,272 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) [2024-06-21 19:15:26,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:26,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:26,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 19:15:26,272 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)] === [2024-06-21 19:15:26,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:26,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1866069253, now seen corresponding path program 8 times [2024-06-21 19:15:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:26,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357588625] [2024-06-21 19:15:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:26,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357588625] [2024-06-21 19:15:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357588625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:27,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468252869] [2024-06-21 19:15:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:27,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 150 transitions, 1443 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) [2024-06-21 19:15:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:27,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:27,668 INFO L124 PetriNetUnfolderBase]: 366/651 cut-off events. [2024-06-21 19:15:27,668 INFO L125 PetriNetUnfolderBase]: For 28643/28643 co-relation queries the response was YES. [2024-06-21 19:15:27,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4221 conditions, 651 events. 366/651 cut-off events. For 28643/28643 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2832 event pairs, 69 based on Foata normal form. 3/653 useless extension candidates. Maximal degree in co-relation 4138. Up to 609 conditions per place. [2024-06-21 19:15:27,672 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 23 changer transitions 0/160 dead transitions. [2024-06-21 19:15:27,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 160 transitions, 1797 flow [2024-06-21 19:15:27,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 19:15:27,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 19:15:27,679 INFO L175 Difference]: Start difference. First operand has 167 places, 150 transitions, 1443 flow. Second operand 10 states and 105 transitions. [2024-06-21 19:15:27,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 160 transitions, 1797 flow [2024-06-21 19:15:27,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1755 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:27,735 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1481 flow [2024-06-21 19:15:27,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1481, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-06-21 19:15:27,735 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-21 19:15:27,735 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1481 flow [2024-06-21 19:15:27,736 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) [2024-06-21 19:15:27,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:27,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:27,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 19:15:27,736 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)] === [2024-06-21 19:15:27,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398589, now seen corresponding path program 4 times [2024-06-21 19:15:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473870819] [2024-06-21 19:15:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:28,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473870819] [2024-06-21 19:15:28,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473870819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:28,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:28,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:28,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514744961] [2024-06-21 19:15:28,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:28,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:28,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:28,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:28,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:28,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1481 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:28,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:28,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:28,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:29,193 INFO L124 PetriNetUnfolderBase]: 370/659 cut-off events. [2024-06-21 19:15:29,193 INFO L125 PetriNetUnfolderBase]: For 28787/28787 co-relation queries the response was YES. [2024-06-21 19:15:29,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4298 conditions, 659 events. 370/659 cut-off events. For 28787/28787 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2886 event pairs, 27 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4214. Up to 480 conditions per place. [2024-06-21 19:15:29,198 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 37 changer transitions 0/168 dead transitions. [2024-06-21 19:15:29,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 168 transitions, 1959 flow [2024-06-21 19:15:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:15:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:15:29,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 19:15:29,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-21 19:15:29,199 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1481 flow. Second operand 7 states and 97 transitions. [2024-06-21 19:15:29,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 168 transitions, 1959 flow [2024-06-21 19:15:29,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 1909 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:29,260 INFO L231 Difference]: Finished difference. Result has 169 places, 153 transitions, 1523 flow [2024-06-21 19:15:29,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1523, PETRI_PLACES=169, PETRI_TRANSITIONS=153} [2024-06-21 19:15:29,260 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-21 19:15:29,261 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 153 transitions, 1523 flow [2024-06-21 19:15:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:29,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:29,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 19:15:29,261 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)] === [2024-06-21 19:15:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1599459163, now seen corresponding path program 9 times [2024-06-21 19:15:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025639265] [2024-06-21 19:15:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:30,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025639265] [2024-06-21 19:15:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025639265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:30,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520816397] [2024-06-21 19:15:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:30,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:30,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:30,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:30,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:30,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:30,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 153 transitions, 1523 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:30,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:30,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:30,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:30,668 INFO L124 PetriNetUnfolderBase]: 373/664 cut-off events. [2024-06-21 19:15:30,669 INFO L125 PetriNetUnfolderBase]: For 28909/28909 co-relation queries the response was YES. [2024-06-21 19:15:30,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4413 conditions, 664 events. 373/664 cut-off events. For 28909/28909 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2906 event pairs, 51 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4329. Up to 486 conditions per place. [2024-06-21 19:15:30,673 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 107 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-06-21 19:15:30,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 170 transitions, 2019 flow [2024-06-21 19:15:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:30,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-21 19:15:30,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 19:15:30,674 INFO L175 Difference]: Start difference. First operand has 169 places, 153 transitions, 1523 flow. Second operand 8 states and 108 transitions. [2024-06-21 19:15:30,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 170 transitions, 2019 flow [2024-06-21 19:15:30,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 170 transitions, 1944 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:30,743 INFO L231 Difference]: Finished difference. Result has 172 places, 157 transitions, 1612 flow [2024-06-21 19:15:30,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1612, PETRI_PLACES=172, PETRI_TRANSITIONS=157} [2024-06-21 19:15:30,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-21 19:15:30,744 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 157 transitions, 1612 flow [2024-06-21 19:15:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:30,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:30,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 19:15:30,744 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)] === [2024-06-21 19:15:30,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1962313419, now seen corresponding path program 5 times [2024-06-21 19:15:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299353628] [2024-06-21 19:15:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299353628] [2024-06-21 19:15:31,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299353628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:31,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:31,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694520076] [2024-06-21 19:15:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:31,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:32,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 157 transitions, 1612 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:32,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:32,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:32,236 INFO L124 PetriNetUnfolderBase]: 377/672 cut-off events. [2024-06-21 19:15:32,236 INFO L125 PetriNetUnfolderBase]: For 30192/30192 co-relation queries the response was YES. [2024-06-21 19:15:32,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 672 events. 377/672 cut-off events. For 30192/30192 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2965 event pairs, 46 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 4407. Up to 560 conditions per place. [2024-06-21 19:15:32,241 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 136 selfloop transitions, 33 changer transitions 0/171 dead transitions. [2024-06-21 19:15:32,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 1995 flow [2024-06-21 19:15:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-21 19:15:32,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:15:32,242 INFO L175 Difference]: Start difference. First operand has 172 places, 157 transitions, 1612 flow. Second operand 8 states and 104 transitions. [2024-06-21 19:15:32,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 1995 flow [2024-06-21 19:15:32,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 1917 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:32,305 INFO L231 Difference]: Finished difference. Result has 174 places, 158 transitions, 1617 flow [2024-06-21 19:15:32,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1617, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2024-06-21 19:15:32,307 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-21 19:15:32,307 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1617 flow [2024-06-21 19:15:32,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:32,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:32,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:32,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 19:15:32,308 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)] === [2024-06-21 19:15:32,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1974945733, now seen corresponding path program 10 times [2024-06-21 19:15:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:32,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973626154] [2024-06-21 19:15:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973626154] [2024-06-21 19:15:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973626154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214644816] [2024-06-21 19:15:33,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:33,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:33,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:33,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1617 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:33,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:33,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:33,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:33,907 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-06-21 19:15:33,908 INFO L125 PetriNetUnfolderBase]: For 31229/31229 co-relation queries the response was YES. [2024-06-21 19:15:33,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4553 conditions, 687 events. 386/687 cut-off events. For 31229/31229 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3045 event pairs, 48 based on Foata normal form. 3/689 useless extension candidates. Maximal degree in co-relation 4468. Up to 449 conditions per place. [2024-06-21 19:15:33,913 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 106 selfloop transitions, 67 changer transitions 0/175 dead transitions. [2024-06-21 19:15:33,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 2135 flow [2024-06-21 19:15:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:33,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:33,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 19:15:33,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 19:15:33,914 INFO L175 Difference]: Start difference. First operand has 174 places, 158 transitions, 1617 flow. Second operand 8 states and 112 transitions. [2024-06-21 19:15:33,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 2135 flow [2024-06-21 19:15:33,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 2063 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:33,988 INFO L231 Difference]: Finished difference. Result has 175 places, 162 transitions, 1735 flow [2024-06-21 19:15:33,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1735, PETRI_PLACES=175, PETRI_TRANSITIONS=162} [2024-06-21 19:15:33,989 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-21 19:15:33,989 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 162 transitions, 1735 flow [2024-06-21 19:15:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:33,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:33,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 19:15:33,990 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)] === [2024-06-21 19:15:33,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255673, now seen corresponding path program 11 times [2024-06-21 19:15:33,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:33,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716877448] [2024-06-21 19:15:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:35,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716877448] [2024-06-21 19:15:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716877448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:35,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:35,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:35,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494751757] [2024-06-21 19:15:35,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:35,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:35,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:35,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:35,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 162 transitions, 1735 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:35,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:35,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:35,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:35,459 INFO L124 PetriNetUnfolderBase]: 389/692 cut-off events. [2024-06-21 19:15:35,459 INFO L125 PetriNetUnfolderBase]: For 29079/29079 co-relation queries the response was YES. [2024-06-21 19:15:35,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 692 events. 389/692 cut-off events. For 29079/29079 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3088 event pairs, 49 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 4616. Up to 570 conditions per place. [2024-06-21 19:15:35,464 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 120 selfloop transitions, 51 changer transitions 0/173 dead transitions. [2024-06-21 19:15:35,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 2119 flow [2024-06-21 19:15:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:15:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:15:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-21 19:15:35,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 19:15:35,465 INFO L175 Difference]: Start difference. First operand has 175 places, 162 transitions, 1735 flow. Second operand 7 states and 98 transitions. [2024-06-21 19:15:35,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 2119 flow [2024-06-21 19:15:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 1974 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:35,546 INFO L231 Difference]: Finished difference. Result has 175 places, 164 transitions, 1724 flow [2024-06-21 19:15:35,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1724, PETRI_PLACES=175, PETRI_TRANSITIONS=164} [2024-06-21 19:15:35,546 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 146 predicate places. [2024-06-21 19:15:35,546 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 164 transitions, 1724 flow [2024-06-21 19:15:35,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:35,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:35,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 19:15:35,547 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)] === [2024-06-21 19:15:35,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255549, now seen corresponding path program 6 times [2024-06-21 19:15:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670405790] [2024-06-21 19:15:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:36,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:36,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670405790] [2024-06-21 19:15:36,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670405790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:36,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:36,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:36,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86349633] [2024-06-21 19:15:36,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:36,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:36,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:36,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:36,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 164 transitions, 1724 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:36,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:37,111 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-06-21 19:15:37,111 INFO L125 PetriNetUnfolderBase]: For 27850/27850 co-relation queries the response was YES. [2024-06-21 19:15:37,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 687 events. 386/687 cut-off events. For 27850/27850 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3051 event pairs, 45 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4443. Up to 604 conditions per place. [2024-06-21 19:15:37,117 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 143 selfloop transitions, 29 changer transitions 0/174 dead transitions. [2024-06-21 19:15:37,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 174 transitions, 2092 flow [2024-06-21 19:15:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:15:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:15:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-06-21 19:15:37,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-21 19:15:37,118 INFO L175 Difference]: Start difference. First operand has 175 places, 164 transitions, 1724 flow. Second operand 7 states and 94 transitions. [2024-06-21 19:15:37,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 174 transitions, 2092 flow [2024-06-21 19:15:37,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 174 transitions, 1993 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:37,185 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1689 flow [2024-06-21 19:15:37,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1689, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-21 19:15:37,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-21 19:15:37,186 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1689 flow [2024-06-21 19:15:37,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:37,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:37,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 19:15:37,187 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)] === [2024-06-21 19:15:37,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash 745349549, now seen corresponding path program 12 times [2024-06-21 19:15:37,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:37,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236423589] [2024-06-21 19:15:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236423589] [2024-06-21 19:15:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236423589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:38,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:38,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612418764] [2024-06-21 19:15:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:38,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:38,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:38,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:38,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1689 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:38,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:38,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:38,610 INFO L124 PetriNetUnfolderBase]: 389/693 cut-off events. [2024-06-21 19:15:38,610 INFO L125 PetriNetUnfolderBase]: For 26594/26594 co-relation queries the response was YES. [2024-06-21 19:15:38,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4522 conditions, 693 events. 389/693 cut-off events. For 26594/26594 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3097 event pairs, 46 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 4438. Up to 541 conditions per place. [2024-06-21 19:15:38,615 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 116 selfloop transitions, 64 changer transitions 0/182 dead transitions. [2024-06-21 19:15:38,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 182 transitions, 2219 flow [2024-06-21 19:15:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:38,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-21 19:15:38,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-21 19:15:38,617 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1689 flow. Second operand 8 states and 113 transitions. [2024-06-21 19:15:38,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 182 transitions, 2219 flow [2024-06-21 19:15:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 182 transitions, 2141 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:38,679 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 1773 flow [2024-06-21 19:15:38,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1773, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2024-06-21 19:15:38,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-21 19:15:38,680 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 1773 flow [2024-06-21 19:15:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:38,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:38,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:38,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 19:15:38,681 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)] === [2024-06-21 19:15:38,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash 737310629, now seen corresponding path program 13 times [2024-06-21 19:15:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:38,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324674548] [2024-06-21 19:15:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:38,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:39,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:39,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324674548] [2024-06-21 19:15:39,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324674548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:39,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:39,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:39,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812176953] [2024-06-21 19:15:39,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:39,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:39,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:39,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:39,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 1773 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:39,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:39,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:39,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:40,102 INFO L124 PetriNetUnfolderBase]: 392/700 cut-off events. [2024-06-21 19:15:40,103 INFO L125 PetriNetUnfolderBase]: For 26584/26584 co-relation queries the response was YES. [2024-06-21 19:15:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 700 events. 392/700 cut-off events. For 26584/26584 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3140 event pairs, 60 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 4530. Up to 587 conditions per place. [2024-06-21 19:15:40,107 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 129 selfloop transitions, 49 changer transitions 0/180 dead transitions. [2024-06-21 19:15:40,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 180 transitions, 2193 flow [2024-06-21 19:15:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:15:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:15:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-21 19:15:40,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-21 19:15:40,116 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 1773 flow. Second operand 7 states and 100 transitions. [2024-06-21 19:15:40,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 180 transitions, 2193 flow [2024-06-21 19:15:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 180 transitions, 2034 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:40,190 INFO L231 Difference]: Finished difference. Result has 178 places, 168 transitions, 1752 flow [2024-06-21 19:15:40,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1752, PETRI_PLACES=178, PETRI_TRANSITIONS=168} [2024-06-21 19:15:40,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-21 19:15:40,191 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 168 transitions, 1752 flow [2024-06-21 19:15:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:40,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:40,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 19:15:40,191 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)] === [2024-06-21 19:15:40,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash 737490305, now seen corresponding path program 9 times [2024-06-21 19:15:40,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121917409] [2024-06-21 19:15:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:41,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:41,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121917409] [2024-06-21 19:15:41,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121917409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:41,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:41,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459936598] [2024-06-21 19:15:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:41,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:41,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:41,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 168 transitions, 1752 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) [2024-06-21 19:15:41,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:41,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:41,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:42,206 INFO L124 PetriNetUnfolderBase]: 408/723 cut-off events. [2024-06-21 19:15:42,206 INFO L125 PetriNetUnfolderBase]: For 30048/30048 co-relation queries the response was YES. [2024-06-21 19:15:42,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 723 events. 408/723 cut-off events. For 30048/30048 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3258 event pairs, 49 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4672. Up to 492 conditions per place. [2024-06-21 19:15:42,211 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 129 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-21 19:15:42,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 193 transitions, 2422 flow [2024-06-21 19:15:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:15:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:15:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 19:15:42,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-21 19:15:42,212 INFO L175 Difference]: Start difference. First operand has 178 places, 168 transitions, 1752 flow. Second operand 12 states and 147 transitions. [2024-06-21 19:15:42,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 193 transitions, 2422 flow [2024-06-21 19:15:42,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 193 transitions, 2309 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:42,293 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1800 flow [2024-06-21 19:15:42,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1800, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-21 19:15:42,293 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-21 19:15:42,293 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1800 flow [2024-06-21 19:15:42,293 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) [2024-06-21 19:15:42,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:42,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:42,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 19:15:42,294 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)] === [2024-06-21 19:15:42,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:42,294 INFO L85 PathProgramCache]: Analyzing trace with hash 745354385, now seen corresponding path program 10 times [2024-06-21 19:15:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:42,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462158125] [2024-06-21 19:15:42,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:42,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:43,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:43,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462158125] [2024-06-21 19:15:43,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462158125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:43,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:43,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:15:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531027126] [2024-06-21 19:15:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:43,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:15:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:15:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:15:43,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:43,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1800 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:43,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:43,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:43,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:43,923 INFO L124 PetriNetUnfolderBase]: 404/717 cut-off events. [2024-06-21 19:15:43,924 INFO L125 PetriNetUnfolderBase]: For 27856/27856 co-relation queries the response was YES. [2024-06-21 19:15:43,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4689 conditions, 717 events. 404/717 cut-off events. For 27856/27856 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3222 event pairs, 50 based on Foata normal form. 2/718 useless extension candidates. Maximal degree in co-relation 4604. Up to 489 conditions per place. [2024-06-21 19:15:43,929 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 127 selfloop transitions, 60 changer transitions 0/189 dead transitions. [2024-06-21 19:15:43,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 189 transitions, 2328 flow [2024-06-21 19:15:43,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:43,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 19:15:43,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-21 19:15:43,930 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1800 flow. Second operand 9 states and 119 transitions. [2024-06-21 19:15:43,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 189 transitions, 2328 flow [2024-06-21 19:15:44,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 189 transitions, 2191 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:44,004 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1788 flow [2024-06-21 19:15:44,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-21 19:15:44,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-21 19:15:44,004 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1788 flow [2024-06-21 19:15:44,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:44,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:44,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:44,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 19:15:44,005 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)] === [2024-06-21 19:15:44,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:44,005 INFO L85 PathProgramCache]: Analyzing trace with hash 737483609, now seen corresponding path program 14 times [2024-06-21 19:15:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:44,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162383971] [2024-06-21 19:15:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:44,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:45,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162383971] [2024-06-21 19:15:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162383971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:45,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723016065] [2024-06-21 19:15:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:45,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:45,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:15:45,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1788 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:45,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:45,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:15:45,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:45,587 INFO L124 PetriNetUnfolderBase]: 402/714 cut-off events. [2024-06-21 19:15:45,587 INFO L125 PetriNetUnfolderBase]: For 26575/26575 co-relation queries the response was YES. [2024-06-21 19:15:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 714 events. 402/714 cut-off events. For 26575/26575 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3206 event pairs, 49 based on Foata normal form. 1/714 useless extension candidates. Maximal degree in co-relation 4539. Up to 604 conditions per place. [2024-06-21 19:15:45,593 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 135 selfloop transitions, 45 changer transitions 0/182 dead transitions. [2024-06-21 19:15:45,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 182 transitions, 2172 flow [2024-06-21 19:15:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:15:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:15:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-21 19:15:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-21 19:15:45,594 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1788 flow. Second operand 8 states and 107 transitions. [2024-06-21 19:15:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 182 transitions, 2172 flow [2024-06-21 19:15:45,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 2035 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:15:45,668 INFO L231 Difference]: Finished difference. Result has 184 places, 172 transitions, 1749 flow [2024-06-21 19:15:45,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1749, PETRI_PLACES=184, PETRI_TRANSITIONS=172} [2024-06-21 19:15:45,670 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-21 19:15:45,670 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 172 transitions, 1749 flow [2024-06-21 19:15:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:45,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:45,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 19:15:45,671 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)] === [2024-06-21 19:15:45,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 349604975, now seen corresponding path program 11 times [2024-06-21 19:15:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638562342] [2024-06-21 19:15:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:46,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:46,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638562342] [2024-06-21 19:15:46,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638562342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:46,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:46,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:46,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860545459] [2024-06-21 19:15:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:46,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:46,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:46,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 172 transitions, 1749 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) [2024-06-21 19:15:46,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:46,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:46,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:47,399 INFO L124 PetriNetUnfolderBase]: 398/708 cut-off events. [2024-06-21 19:15:47,400 INFO L125 PetriNetUnfolderBase]: For 26127/26127 co-relation queries the response was YES. [2024-06-21 19:15:47,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 708 events. 398/708 cut-off events. For 26127/26127 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3193 event pairs, 47 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4380. Up to 483 conditions per place. [2024-06-21 19:15:47,405 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-21 19:15:47,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2183 flow [2024-06-21 19:15:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:15:47,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-21 19:15:47,406 INFO L175 Difference]: Start difference. First operand has 184 places, 172 transitions, 1749 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:15:47,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2183 flow [2024-06-21 19:15:47,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 189 transitions, 2035 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:47,469 INFO L231 Difference]: Finished difference. Result has 185 places, 172 transitions, 1728 flow [2024-06-21 19:15:47,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1728, PETRI_PLACES=185, PETRI_TRANSITIONS=172} [2024-06-21 19:15:47,470 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-21 19:15:47,470 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 172 transitions, 1728 flow [2024-06-21 19:15:47,470 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) [2024-06-21 19:15:47,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:47,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:47,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 19:15:47,471 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)] === [2024-06-21 19:15:47,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:47,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1203455895, now seen corresponding path program 1 times [2024-06-21 19:15:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:47,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339791458] [2024-06-21 19:15:47,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:47,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:49,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:49,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339791458] [2024-06-21 19:15:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339791458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:49,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:49,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578756340] [2024-06-21 19:15:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:49,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:49,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 172 transitions, 1728 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) [2024-06-21 19:15:49,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:49,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:49,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:49,392 INFO L124 PetriNetUnfolderBase]: 409/729 cut-off events. [2024-06-21 19:15:49,393 INFO L125 PetriNetUnfolderBase]: For 28717/28717 co-relation queries the response was YES. [2024-06-21 19:15:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 729 events. 409/729 cut-off events. For 28717/28717 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3316 event pairs, 83 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 4515. Up to 548 conditions per place. [2024-06-21 19:15:49,398 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 142 selfloop transitions, 45 changer transitions 0/189 dead transitions. [2024-06-21 19:15:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 189 transitions, 2252 flow [2024-06-21 19:15:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 19:15:49,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-21 19:15:49,399 INFO L175 Difference]: Start difference. First operand has 185 places, 172 transitions, 1728 flow. Second operand 9 states and 109 transitions. [2024-06-21 19:15:49,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 189 transitions, 2252 flow [2024-06-21 19:15:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 189 transitions, 2130 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 19:15:49,471 INFO L231 Difference]: Finished difference. Result has 185 places, 174 transitions, 1714 flow [2024-06-21 19:15:49,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1714, PETRI_PLACES=185, PETRI_TRANSITIONS=174} [2024-06-21 19:15:49,471 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-21 19:15:49,471 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 174 transitions, 1714 flow [2024-06-21 19:15:49,472 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) [2024-06-21 19:15:49,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:49,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:49,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 19:15:49,472 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)] === [2024-06-21 19:15:49,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1205333565, now seen corresponding path program 2 times [2024-06-21 19:15:49,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:49,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836211831] [2024-06-21 19:15:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:49,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836211831] [2024-06-21 19:15:51,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836211831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:51,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:51,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426195992] [2024-06-21 19:15:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:51,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:51,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 174 transitions, 1714 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) [2024-06-21 19:15:51,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:51,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:51,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:51,404 INFO L124 PetriNetUnfolderBase]: 413/737 cut-off events. [2024-06-21 19:15:51,405 INFO L125 PetriNetUnfolderBase]: For 29588/29588 co-relation queries the response was YES. [2024-06-21 19:15:51,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4606 conditions, 737 events. 413/737 cut-off events. For 29588/29588 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3386 event pairs, 91 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4519. Up to 629 conditions per place. [2024-06-21 19:15:51,411 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 140 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2024-06-21 19:15:51,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 186 transitions, 2118 flow [2024-06-21 19:15:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:51,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:15:51,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 19:15:51,419 INFO L175 Difference]: Start difference. First operand has 185 places, 174 transitions, 1714 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:15:51,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 186 transitions, 2118 flow [2024-06-21 19:15:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 2051 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:15:51,507 INFO L231 Difference]: Finished difference. Result has 189 places, 175 transitions, 1749 flow [2024-06-21 19:15:51,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1749, PETRI_PLACES=189, PETRI_TRANSITIONS=175} [2024-06-21 19:15:51,508 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-21 19:15:51,509 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 175 transitions, 1749 flow [2024-06-21 19:15:51,509 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) [2024-06-21 19:15:51,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:51,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:51,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 19:15:51,509 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)] === [2024-06-21 19:15:51,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1205329845, now seen corresponding path program 3 times [2024-06-21 19:15:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461152731] [2024-06-21 19:15:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:51,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461152731] [2024-06-21 19:15:53,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461152731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:53,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487525289] [2024-06-21 19:15:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:53,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 175 transitions, 1749 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) [2024-06-21 19:15:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:53,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:53,521 INFO L124 PetriNetUnfolderBase]: 417/745 cut-off events. [2024-06-21 19:15:53,521 INFO L125 PetriNetUnfolderBase]: For 30682/30682 co-relation queries the response was YES. [2024-06-21 19:15:53,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 745 events. 417/745 cut-off events. For 30682/30682 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3433 event pairs, 89 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4610. Up to 623 conditions per place. [2024-06-21 19:15:53,526 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 141 selfloop transitions, 45 changer transitions 0/188 dead transitions. [2024-06-21 19:15:53,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 188 transitions, 2157 flow [2024-06-21 19:15:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 19:15:53,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-21 19:15:53,528 INFO L175 Difference]: Start difference. First operand has 189 places, 175 transitions, 1749 flow. Second operand 9 states and 107 transitions. [2024-06-21 19:15:53,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 188 transitions, 2157 flow [2024-06-21 19:15:53,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 188 transitions, 2071 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:53,594 INFO L231 Difference]: Finished difference. Result has 191 places, 176 transitions, 1765 flow [2024-06-21 19:15:53,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1765, PETRI_PLACES=191, PETRI_TRANSITIONS=176} [2024-06-21 19:15:53,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-21 19:15:53,596 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 176 transitions, 1765 flow [2024-06-21 19:15:53,596 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) [2024-06-21 19:15:53,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:53,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 19:15:53,597 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)] === [2024-06-21 19:15:53,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1691028296, now seen corresponding path program 1 times [2024-06-21 19:15:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423503222] [2024-06-21 19:15:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:55,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423503222] [2024-06-21 19:15:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423503222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030151365] [2024-06-21 19:15:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:55,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:55,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 176 transitions, 1765 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) [2024-06-21 19:15:55,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:55,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:55,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:55,533 INFO L124 PetriNetUnfolderBase]: 439/781 cut-off events. [2024-06-21 19:15:55,533 INFO L125 PetriNetUnfolderBase]: For 34833/34833 co-relation queries the response was YES. [2024-06-21 19:15:55,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5000 conditions, 781 events. 439/781 cut-off events. For 34833/34833 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3631 event pairs, 97 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4910. Up to 512 conditions per place. [2024-06-21 19:15:55,541 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 62 changer transitions 0/196 dead transitions. [2024-06-21 19:15:55,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 196 transitions, 2359 flow [2024-06-21 19:15:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:15:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:15:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 19:15:55,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-21 19:15:55,542 INFO L175 Difference]: Start difference. First operand has 191 places, 176 transitions, 1765 flow. Second operand 10 states and 119 transitions. [2024-06-21 19:15:55,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 196 transitions, 2359 flow [2024-06-21 19:15:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 196 transitions, 2269 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:55,640 INFO L231 Difference]: Finished difference. Result has 195 places, 182 transitions, 1898 flow [2024-06-21 19:15:55,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1898, PETRI_PLACES=195, PETRI_TRANSITIONS=182} [2024-06-21 19:15:55,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 19:15:55,641 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 182 transitions, 1898 flow [2024-06-21 19:15:55,642 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) [2024-06-21 19:15:55,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:55,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:55,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 19:15:55,642 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)] === [2024-06-21 19:15:55,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash 972860179, now seen corresponding path program 4 times [2024-06-21 19:15:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:55,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363202389] [2024-06-21 19:15:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:55,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:57,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363202389] [2024-06-21 19:15:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363202389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518198075] [2024-06-21 19:15:57,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:57,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:57,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:57,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:57,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:57,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:57,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 182 transitions, 1898 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:15:57,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:57,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:57,452 INFO L124 PetriNetUnfolderBase]: 443/789 cut-off events. [2024-06-21 19:15:57,452 INFO L125 PetriNetUnfolderBase]: For 36431/36431 co-relation queries the response was YES. [2024-06-21 19:15:57,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 789 events. 443/789 cut-off events. For 36431/36431 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3695 event pairs, 98 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5084. Up to 707 conditions per place. [2024-06-21 19:15:57,459 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 157 selfloop transitions, 34 changer transitions 0/193 dead transitions. [2024-06-21 19:15:57,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 2312 flow [2024-06-21 19:15:57,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:15:57,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-21 19:15:57,460 INFO L175 Difference]: Start difference. First operand has 195 places, 182 transitions, 1898 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:15:57,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 2312 flow [2024-06-21 19:15:57,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 193 transitions, 2235 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 19:15:57,538 INFO L231 Difference]: Finished difference. Result has 198 places, 183 transitions, 1903 flow [2024-06-21 19:15:57,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1903, PETRI_PLACES=198, PETRI_TRANSITIONS=183} [2024-06-21 19:15:57,538 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-21 19:15:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 183 transitions, 1903 flow [2024-06-21 19:15:57,538 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) [2024-06-21 19:15:57,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:57,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:57,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 19:15:57,539 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)] === [2024-06-21 19:15:57,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash 615147974, now seen corresponding path program 2 times [2024-06-21 19:15:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107051600] [2024-06-21 19:15:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:57,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:15:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:15:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:15:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107051600] [2024-06-21 19:15:59,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107051600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:15:59,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:15:59,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:15:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878842153] [2024-06-21 19:15:59,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:15:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:15:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:15:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:15:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:15:59,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:15:59,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 183 transitions, 1903 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) [2024-06-21 19:15:59,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:15:59,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:15:59,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:15:59,446 INFO L124 PetriNetUnfolderBase]: 449/799 cut-off events. [2024-06-21 19:15:59,446 INFO L125 PetriNetUnfolderBase]: For 37813/37813 co-relation queries the response was YES. [2024-06-21 19:15:59,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 799 events. 449/799 cut-off events. For 37813/37813 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3753 event pairs, 99 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5199. Up to 708 conditions per place. [2024-06-21 19:15:59,452 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 154 selfloop transitions, 39 changer transitions 0/195 dead transitions. [2024-06-21 19:15:59,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 2341 flow [2024-06-21 19:15:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:15:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:15:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 19:15:59,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-21 19:15:59,453 INFO L175 Difference]: Start difference. First operand has 198 places, 183 transitions, 1903 flow. Second operand 9 states and 109 transitions. [2024-06-21 19:15:59,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 2341 flow [2024-06-21 19:15:59,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 195 transitions, 2271 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 19:15:59,549 INFO L231 Difference]: Finished difference. Result has 200 places, 185 transitions, 1944 flow [2024-06-21 19:15:59,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1944, PETRI_PLACES=200, PETRI_TRANSITIONS=185} [2024-06-21 19:15:59,550 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-21 19:15:59,550 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 185 transitions, 1944 flow [2024-06-21 19:15:59,550 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) [2024-06-21 19:15:59,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:15:59,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:15:59,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 19:15:59,551 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)] === [2024-06-21 19:15:59,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:15:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 972716184, now seen corresponding path program 3 times [2024-06-21 19:15:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:15:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795012141] [2024-06-21 19:15:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:15:59,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:15:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:00,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795012141] [2024-06-21 19:16:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795012141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:00,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757627945] [2024-06-21 19:16:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:01,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:01,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 185 transitions, 1944 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) [2024-06-21 19:16:01,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:01,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:01,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:01,439 INFO L124 PetriNetUnfolderBase]: 455/809 cut-off events. [2024-06-21 19:16:01,439 INFO L125 PetriNetUnfolderBase]: For 39252/39252 co-relation queries the response was YES. [2024-06-21 19:16:01,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 809 events. 455/809 cut-off events. For 39252/39252 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3815 event pairs, 99 based on Foata normal form. 2/810 useless extension candidates. Maximal degree in co-relation 5302. Up to 706 conditions per place. [2024-06-21 19:16:01,445 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 153 selfloop transitions, 43 changer transitions 0/198 dead transitions. [2024-06-21 19:16:01,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 198 transitions, 2398 flow [2024-06-21 19:16:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 19:16:01,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-21 19:16:01,449 INFO L175 Difference]: Start difference. First operand has 200 places, 185 transitions, 1944 flow. Second operand 10 states and 118 transitions. [2024-06-21 19:16:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 198 transitions, 2398 flow [2024-06-21 19:16:01,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 198 transitions, 2335 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 19:16:01,547 INFO L231 Difference]: Finished difference. Result has 204 places, 187 transitions, 2004 flow [2024-06-21 19:16:01,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=204, PETRI_TRANSITIONS=187} [2024-06-21 19:16:01,548 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-21 19:16:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 187 transitions, 2004 flow [2024-06-21 19:16:01,548 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) [2024-06-21 19:16:01,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:01,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 19:16:01,549 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)] === [2024-06-21 19:16:01,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 918250775, now seen corresponding path program 5 times [2024-06-21 19:16:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531621539] [2024-06-21 19:16:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:01,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531621539] [2024-06-21 19:16:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531621539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:03,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232961387] [2024-06-21 19:16:03,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:03,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:03,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:03,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 187 transitions, 2004 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) [2024-06-21 19:16:03,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:03,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:03,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:03,475 INFO L124 PetriNetUnfolderBase]: 459/817 cut-off events. [2024-06-21 19:16:03,476 INFO L125 PetriNetUnfolderBase]: For 40747/40747 co-relation queries the response was YES. [2024-06-21 19:16:03,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5472 conditions, 817 events. 459/817 cut-off events. For 40747/40747 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3867 event pairs, 99 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5376. Up to 738 conditions per place. [2024-06-21 19:16:03,482 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 33 changer transitions 0/198 dead transitions. [2024-06-21 19:16:03,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 198 transitions, 2430 flow [2024-06-21 19:16:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:16:03,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 19:16:03,483 INFO L175 Difference]: Start difference. First operand has 204 places, 187 transitions, 2004 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:16:03,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 198 transitions, 2430 flow [2024-06-21 19:16:03,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 198 transitions, 2329 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:03,589 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 1985 flow [2024-06-21 19:16:03,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1985, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2024-06-21 19:16:03,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-21 19:16:03,590 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 1985 flow [2024-06-21 19:16:03,590 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) [2024-06-21 19:16:03,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:03,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:03,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 19:16:03,590 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)] === [2024-06-21 19:16:03,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1777716231, now seen corresponding path program 6 times [2024-06-21 19:16:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627268506] [2024-06-21 19:16:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:05,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627268506] [2024-06-21 19:16:05,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627268506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:05,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:05,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:05,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384762434] [2024-06-21 19:16:05,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:05,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:05,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:05,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:05,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:05,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 1985 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) [2024-06-21 19:16:05,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:05,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:05,390 INFO L124 PetriNetUnfolderBase]: 463/825 cut-off events. [2024-06-21 19:16:05,391 INFO L125 PetriNetUnfolderBase]: For 41955/41955 co-relation queries the response was YES. [2024-06-21 19:16:05,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5495 conditions, 825 events. 463/825 cut-off events. For 41955/41955 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3925 event pairs, 99 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5398. Up to 726 conditions per place. [2024-06-21 19:16:05,397 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 35 changer transitions 0/200 dead transitions. [2024-06-21 19:16:05,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 200 transitions, 2419 flow [2024-06-21 19:16:05,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 19:16:05,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-21 19:16:05,398 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 1985 flow. Second operand 9 states and 106 transitions. [2024-06-21 19:16:05,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 200 transitions, 2419 flow [2024-06-21 19:16:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 200 transitions, 2349 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:05,498 INFO L231 Difference]: Finished difference. Result has 207 places, 189 transitions, 2003 flow [2024-06-21 19:16:05,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2003, PETRI_PLACES=207, PETRI_TRANSITIONS=189} [2024-06-21 19:16:05,499 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-21 19:16:05,499 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 189 transitions, 2003 flow [2024-06-21 19:16:05,499 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) [2024-06-21 19:16:05,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:05,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:05,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 19:16:05,500 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)] === [2024-06-21 19:16:05,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1056775205, now seen corresponding path program 7 times [2024-06-21 19:16:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567000507] [2024-06-21 19:16:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:05,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:07,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567000507] [2024-06-21 19:16:07,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567000507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:07,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:07,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605886580] [2024-06-21 19:16:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:07,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:07,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:07,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:07,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 189 transitions, 2003 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) [2024-06-21 19:16:07,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:07,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:07,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:07,455 INFO L124 PetriNetUnfolderBase]: 467/833 cut-off events. [2024-06-21 19:16:07,455 INFO L125 PetriNetUnfolderBase]: For 43517/43517 co-relation queries the response was YES. [2024-06-21 19:16:07,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5568 conditions, 833 events. 467/833 cut-off events. For 43517/43517 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3987 event pairs, 97 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5470. Up to 705 conditions per place. [2024-06-21 19:16:07,461 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 45 changer transitions 0/205 dead transitions. [2024-06-21 19:16:07,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 2581 flow [2024-06-21 19:16:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 19:16:07,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-21 19:16:07,463 INFO L175 Difference]: Start difference. First operand has 207 places, 189 transitions, 2003 flow. Second operand 9 states and 112 transitions. [2024-06-21 19:16:07,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 2581 flow [2024-06-21 19:16:07,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 205 transitions, 2505 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:07,562 INFO L231 Difference]: Finished difference. Result has 209 places, 190 transitions, 2035 flow [2024-06-21 19:16:07,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2035, PETRI_PLACES=209, PETRI_TRANSITIONS=190} [2024-06-21 19:16:07,564 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-21 19:16:07,564 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 190 transitions, 2035 flow [2024-06-21 19:16:07,564 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) [2024-06-21 19:16:07,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:07,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:07,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 19:16:07,564 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)] === [2024-06-21 19:16:07,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1056778925, now seen corresponding path program 8 times [2024-06-21 19:16:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:07,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037927599] [2024-06-21 19:16:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:09,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:09,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037927599] [2024-06-21 19:16:09,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037927599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:09,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:09,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:09,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525240392] [2024-06-21 19:16:09,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:09,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:09,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:09,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:09,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 190 transitions, 2035 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) [2024-06-21 19:16:09,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:09,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:09,629 INFO L124 PetriNetUnfolderBase]: 471/841 cut-off events. [2024-06-21 19:16:09,629 INFO L125 PetriNetUnfolderBase]: For 44994/44994 co-relation queries the response was YES. [2024-06-21 19:16:09,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5653 conditions, 841 events. 471/841 cut-off events. For 44994/44994 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4046 event pairs, 101 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 5554. Up to 748 conditions per place. [2024-06-21 19:16:09,636 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 158 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-21 19:16:09,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 203 transitions, 2485 flow [2024-06-21 19:16:09,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-21 19:16:09,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:16:09,654 INFO L175 Difference]: Start difference. First operand has 209 places, 190 transitions, 2035 flow. Second operand 9 states and 108 transitions. [2024-06-21 19:16:09,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 203 transitions, 2485 flow [2024-06-21 19:16:09,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 203 transitions, 2375 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:09,823 INFO L231 Difference]: Finished difference. Result has 211 places, 191 transitions, 2033 flow [2024-06-21 19:16:09,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2033, PETRI_PLACES=211, PETRI_TRANSITIONS=191} [2024-06-21 19:16:09,823 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-21 19:16:09,827 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 191 transitions, 2033 flow [2024-06-21 19:16:09,827 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) [2024-06-21 19:16:09,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:09,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:09,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 19:16:09,828 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)] === [2024-06-21 19:16:09,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1056779080, now seen corresponding path program 4 times [2024-06-21 19:16:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932421350] [2024-06-21 19:16:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:11,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:11,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932421350] [2024-06-21 19:16:11,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932421350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:11,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:11,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:11,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634529924] [2024-06-21 19:16:11,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:11,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:11,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:11,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 191 transitions, 2033 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) [2024-06-21 19:16:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:11,722 INFO L124 PetriNetUnfolderBase]: 487/867 cut-off events. [2024-06-21 19:16:11,722 INFO L125 PetriNetUnfolderBase]: For 50235/50235 co-relation queries the response was YES. [2024-06-21 19:16:11,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5938 conditions, 867 events. 487/867 cut-off events. For 50235/50235 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4184 event pairs, 106 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 5838. Up to 737 conditions per place. [2024-06-21 19:16:11,729 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 155 selfloop transitions, 52 changer transitions 0/209 dead transitions. [2024-06-21 19:16:11,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 209 transitions, 2677 flow [2024-06-21 19:16:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:11,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:16:11,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-21 19:16:11,730 INFO L175 Difference]: Start difference. First operand has 211 places, 191 transitions, 2033 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:16:11,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 209 transitions, 2677 flow [2024-06-21 19:16:11,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 209 transitions, 2583 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:11,862 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 2116 flow [2024-06-21 19:16:11,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2024-06-21 19:16:11,862 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-21 19:16:11,862 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 2116 flow [2024-06-21 19:16:11,862 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) [2024-06-21 19:16:11,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:11,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 19:16:11,863 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)] === [2024-06-21 19:16:11,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1056923230, now seen corresponding path program 5 times [2024-06-21 19:16:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:11,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126983909] [2024-06-21 19:16:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:13,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:13,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126983909] [2024-06-21 19:16:13,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126983909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:13,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:13,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36320377] [2024-06-21 19:16:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:13,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:13,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 2116 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) [2024-06-21 19:16:13,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:13,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:13,750 INFO L124 PetriNetUnfolderBase]: 493/877 cut-off events. [2024-06-21 19:16:13,750 INFO L125 PetriNetUnfolderBase]: For 52040/52040 co-relation queries the response was YES. [2024-06-21 19:16:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 877 events. 493/877 cut-off events. For 52040/52040 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4249 event pairs, 106 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 5956. Up to 786 conditions per place. [2024-06-21 19:16:13,758 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 162 selfloop transitions, 44 changer transitions 0/208 dead transitions. [2024-06-21 19:16:13,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 208 transitions, 2596 flow [2024-06-21 19:16:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 19:16:13,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-21 19:16:13,759 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 2116 flow. Second operand 9 states and 112 transitions. [2024-06-21 19:16:13,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 208 transitions, 2596 flow [2024-06-21 19:16:13,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 208 transitions, 2557 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 19:16:13,922 INFO L231 Difference]: Finished difference. Result has 219 places, 197 transitions, 2210 flow [2024-06-21 19:16:13,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2210, PETRI_PLACES=219, PETRI_TRANSITIONS=197} [2024-06-21 19:16:13,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-21 19:16:13,923 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 197 transitions, 2210 flow [2024-06-21 19:16:13,923 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) [2024-06-21 19:16:13,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:13,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 19:16:13,924 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)] === [2024-06-21 19:16:13,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1056923075, now seen corresponding path program 9 times [2024-06-21 19:16:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765911631] [2024-06-21 19:16:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:15,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765911631] [2024-06-21 19:16:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765911631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:15,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260463857] [2024-06-21 19:16:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:15,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:15,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 197 transitions, 2210 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) [2024-06-21 19:16:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:15,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:15,450 INFO L124 PetriNetUnfolderBase]: 497/885 cut-off events. [2024-06-21 19:16:15,451 INFO L125 PetriNetUnfolderBase]: For 53779/53779 co-relation queries the response was YES. [2024-06-21 19:16:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6197 conditions, 885 events. 497/885 cut-off events. For 53779/53779 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4300 event pairs, 104 based on Foata normal form. 2/886 useless extension candidates. Maximal degree in co-relation 6094. Up to 812 conditions per place. [2024-06-21 19:16:15,457 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 33 changer transitions 0/209 dead transitions. [2024-06-21 19:16:15,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 209 transitions, 2668 flow [2024-06-21 19:16:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:16:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:16:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 19:16:15,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-21 19:16:15,459 INFO L175 Difference]: Start difference. First operand has 219 places, 197 transitions, 2210 flow. Second operand 9 states and 105 transitions. [2024-06-21 19:16:15,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 209 transitions, 2668 flow [2024-06-21 19:16:15,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 209 transitions, 2560 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:15,569 INFO L231 Difference]: Finished difference. Result has 221 places, 198 transitions, 2190 flow [2024-06-21 19:16:15,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2190, PETRI_PLACES=221, PETRI_TRANSITIONS=198} [2024-06-21 19:16:15,570 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-21 19:16:15,570 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 198 transitions, 2190 flow [2024-06-21 19:16:15,570 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) [2024-06-21 19:16:15,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:15,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:15,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 19:16:15,570 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)] === [2024-06-21 19:16:15,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:15,571 INFO L85 PathProgramCache]: Analyzing trace with hash 571234234, now seen corresponding path program 6 times [2024-06-21 19:16:15,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:15,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706400626] [2024-06-21 19:16:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:16,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:16,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706400626] [2024-06-21 19:16:16,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706400626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:16,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695976980] [2024-06-21 19:16:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:17,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:17,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 198 transitions, 2190 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) [2024-06-21 19:16:17,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:17,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:17,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:17,388 INFO L124 PetriNetUnfolderBase]: 503/895 cut-off events. [2024-06-21 19:16:17,388 INFO L125 PetriNetUnfolderBase]: For 55306/55306 co-relation queries the response was YES. [2024-06-21 19:16:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 895 events. 503/895 cut-off events. For 55306/55306 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4375 event pairs, 105 based on Foata normal form. 2/896 useless extension candidates. Maximal degree in co-relation 6150. Up to 808 conditions per place. [2024-06-21 19:16:17,395 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 171 selfloop transitions, 39 changer transitions 0/212 dead transitions. [2024-06-21 19:16:17,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 212 transitions, 2684 flow [2024-06-21 19:16:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:16:17,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-21 19:16:17,397 INFO L175 Difference]: Start difference. First operand has 221 places, 198 transitions, 2190 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:16:17,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 212 transitions, 2684 flow [2024-06-21 19:16:17,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 212 transitions, 2608 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-21 19:16:17,517 INFO L231 Difference]: Finished difference. Result has 224 places, 200 transitions, 2237 flow [2024-06-21 19:16:17,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=224, PETRI_TRANSITIONS=200} [2024-06-21 19:16:17,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-21 19:16:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 200 transitions, 2237 flow [2024-06-21 19:16:17,518 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) [2024-06-21 19:16:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:17,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 19:16:17,518 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)] === [2024-06-21 19:16:17,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 576798424, now seen corresponding path program 7 times [2024-06-21 19:16:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210346439] [2024-06-21 19:16:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:19,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210346439] [2024-06-21 19:16:19,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210346439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:19,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390034202] [2024-06-21 19:16:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:19,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:19,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:19,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:19,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 200 transitions, 2237 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) [2024-06-21 19:16:19,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:19,952 INFO L124 PetriNetUnfolderBase]: 509/905 cut-off events. [2024-06-21 19:16:19,952 INFO L125 PetriNetUnfolderBase]: For 57207/57207 co-relation queries the response was YES. [2024-06-21 19:16:19,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6366 conditions, 905 events. 509/905 cut-off events. For 57207/57207 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4430 event pairs, 99 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 6261. Up to 744 conditions per place. [2024-06-21 19:16:19,959 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 169 selfloop transitions, 48 changer transitions 0/219 dead transitions. [2024-06-21 19:16:19,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 219 transitions, 2769 flow [2024-06-21 19:16:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:16:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:16:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 19:16:19,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-06-21 19:16:19,961 INFO L175 Difference]: Start difference. First operand has 224 places, 200 transitions, 2237 flow. Second operand 13 states and 145 transitions. [2024-06-21 19:16:19,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 219 transitions, 2769 flow [2024-06-21 19:16:20,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 219 transitions, 2664 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:20,086 INFO L231 Difference]: Finished difference. Result has 229 places, 202 transitions, 2277 flow [2024-06-21 19:16:20,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2277, PETRI_PLACES=229, PETRI_TRANSITIONS=202} [2024-06-21 19:16:20,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-21 19:16:20,087 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 202 transitions, 2277 flow [2024-06-21 19:16:20,087 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) [2024-06-21 19:16:20,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:20,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 19:16:20,088 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)] === [2024-06-21 19:16:20,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 576806360, now seen corresponding path program 1 times [2024-06-21 19:16:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377730747] [2024-06-21 19:16:20,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377730747] [2024-06-21 19:16:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377730747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731655844] [2024-06-21 19:16:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:21,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:21,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 202 transitions, 2277 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) [2024-06-21 19:16:21,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:21,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:21,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:22,082 INFO L124 PetriNetUnfolderBase]: 517/921 cut-off events. [2024-06-21 19:16:22,082 INFO L125 PetriNetUnfolderBase]: For 63380/63380 co-relation queries the response was YES. [2024-06-21 19:16:22,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 921 events. 517/921 cut-off events. For 63380/63380 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4548 event pairs, 103 based on Foata normal form. 4/924 useless extension candidates. Maximal degree in co-relation 6393. Up to 824 conditions per place. [2024-06-21 19:16:22,090 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 36 changer transitions 0/215 dead transitions. [2024-06-21 19:16:22,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 215 transitions, 2765 flow [2024-06-21 19:16:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:16:22,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-21 19:16:22,091 INFO L175 Difference]: Start difference. First operand has 229 places, 202 transitions, 2277 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:16:22,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 215 transitions, 2765 flow [2024-06-21 19:16:22,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 215 transitions, 2642 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:22,219 INFO L231 Difference]: Finished difference. Result has 228 places, 204 transitions, 2267 flow [2024-06-21 19:16:22,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2267, PETRI_PLACES=228, PETRI_TRANSITIONS=204} [2024-06-21 19:16:22,219 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2024-06-21 19:16:22,219 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 204 transitions, 2267 flow [2024-06-21 19:16:22,219 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) [2024-06-21 19:16:22,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:22,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:22,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 19:16:22,220 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)] === [2024-06-21 19:16:22,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash 576596614, now seen corresponding path program 8 times [2024-06-21 19:16:22,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:22,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678207226] [2024-06-21 19:16:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:22,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:23,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678207226] [2024-06-21 19:16:23,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678207226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:23,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:23,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:23,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091384323] [2024-06-21 19:16:23,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:23,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:23,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:23,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:23,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 204 transitions, 2267 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) [2024-06-21 19:16:23,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:23,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:23,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:24,258 INFO L124 PetriNetUnfolderBase]: 523/931 cut-off events. [2024-06-21 19:16:24,258 INFO L125 PetriNetUnfolderBase]: For 60772/60772 co-relation queries the response was YES. [2024-06-21 19:16:24,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 931 events. 523/931 cut-off events. For 60772/60772 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4605 event pairs, 109 based on Foata normal form. 2/932 useless extension candidates. Maximal degree in co-relation 6447. Up to 844 conditions per place. [2024-06-21 19:16:24,266 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 181 selfloop transitions, 35 changer transitions 0/218 dead transitions. [2024-06-21 19:16:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 218 transitions, 2779 flow [2024-06-21 19:16:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 19:16:24,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-21 19:16:24,267 INFO L175 Difference]: Start difference. First operand has 228 places, 204 transitions, 2267 flow. Second operand 11 states and 123 transitions. [2024-06-21 19:16:24,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 218 transitions, 2779 flow [2024-06-21 19:16:24,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2682 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:24,403 INFO L231 Difference]: Finished difference. Result has 231 places, 206 transitions, 2293 flow [2024-06-21 19:16:24,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2293, PETRI_PLACES=231, PETRI_TRANSITIONS=206} [2024-06-21 19:16:24,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2024-06-21 19:16:24,404 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 206 transitions, 2293 flow [2024-06-21 19:16:24,404 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) [2024-06-21 19:16:24,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:24,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:24,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 19:16:24,405 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)] === [2024-06-21 19:16:24,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 576591034, now seen corresponding path program 9 times [2024-06-21 19:16:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479889176] [2024-06-21 19:16:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:26,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:26,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479889176] [2024-06-21 19:16:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479889176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:26,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:16:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718349831] [2024-06-21 19:16:26,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:26,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:16:26,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:16:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:16:26,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:26,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 206 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:26,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:26,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:26,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:26,743 INFO L124 PetriNetUnfolderBase]: 529/941 cut-off events. [2024-06-21 19:16:26,743 INFO L125 PetriNetUnfolderBase]: For 62580/62580 co-relation queries the response was YES. [2024-06-21 19:16:26,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 941 events. 529/941 cut-off events. For 62580/62580 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4659 event pairs, 98 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6506. Up to 763 conditions per place. [2024-06-21 19:16:26,751 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 169 selfloop transitions, 52 changer transitions 0/223 dead transitions. [2024-06-21 19:16:26,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 223 transitions, 2829 flow [2024-06-21 19:16:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 19:16:26,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-21 19:16:26,752 INFO L175 Difference]: Start difference. First operand has 231 places, 206 transitions, 2293 flow. Second operand 11 states and 129 transitions. [2024-06-21 19:16:26,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 223 transitions, 2829 flow [2024-06-21 19:16:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 223 transitions, 2747 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:26,888 INFO L231 Difference]: Finished difference. Result has 234 places, 208 transitions, 2364 flow [2024-06-21 19:16:26,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=234, PETRI_TRANSITIONS=208} [2024-06-21 19:16:26,889 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-21 19:16:26,889 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 208 transitions, 2364 flow [2024-06-21 19:16:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:26,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:26,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 19:16:26,890 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)] === [2024-06-21 19:16:26,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 576590879, now seen corresponding path program 10 times [2024-06-21 19:16:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410446719] [2024-06-21 19:16:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:28,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410446719] [2024-06-21 19:16:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410446719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:28,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:28,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:28,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609204802] [2024-06-21 19:16:28,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:28,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:28,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:28,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:28,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 208 transitions, 2364 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) [2024-06-21 19:16:28,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:28,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:28,707 INFO L124 PetriNetUnfolderBase]: 533/949 cut-off events. [2024-06-21 19:16:28,707 INFO L125 PetriNetUnfolderBase]: For 64568/64568 co-relation queries the response was YES. [2024-06-21 19:16:28,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6721 conditions, 949 events. 533/949 cut-off events. For 64568/64568 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4723 event pairs, 110 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6612. Up to 876 conditions per place. [2024-06-21 19:16:28,716 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 188 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2024-06-21 19:16:28,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 220 transitions, 2844 flow [2024-06-21 19:16:28,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-21 19:16:28,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-21 19:16:28,717 INFO L175 Difference]: Start difference. First operand has 234 places, 208 transitions, 2364 flow. Second operand 10 states and 113 transitions. [2024-06-21 19:16:28,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 220 transitions, 2844 flow [2024-06-21 19:16:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 220 transitions, 2717 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:28,875 INFO L231 Difference]: Finished difference. Result has 235 places, 209 transitions, 2321 flow [2024-06-21 19:16:28,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2237, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2321, PETRI_PLACES=235, PETRI_TRANSITIONS=209} [2024-06-21 19:16:28,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-06-21 19:16:28,876 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 209 transitions, 2321 flow [2024-06-21 19:16:28,876 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) [2024-06-21 19:16:28,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:28,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:28,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 19:16:28,877 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)] === [2024-06-21 19:16:28,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:28,877 INFO L85 PathProgramCache]: Analyzing trace with hash 290408250, now seen corresponding path program 2 times [2024-06-21 19:16:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:28,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439490396] [2024-06-21 19:16:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:28,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:30,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439490396] [2024-06-21 19:16:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439490396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:30,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:30,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253476464] [2024-06-21 19:16:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:30,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:30,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:30,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:30,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 209 transitions, 2321 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) [2024-06-21 19:16:30,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:30,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:30,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:30,969 INFO L124 PetriNetUnfolderBase]: 537/957 cut-off events. [2024-06-21 19:16:30,970 INFO L125 PetriNetUnfolderBase]: For 66298/66298 co-relation queries the response was YES. [2024-06-21 19:16:30,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6714 conditions, 957 events. 537/957 cut-off events. For 66298/66298 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4760 event pairs, 104 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 6604. Up to 905 conditions per place. [2024-06-21 19:16:30,978 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 196 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2024-06-21 19:16:30,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 221 transitions, 2815 flow [2024-06-21 19:16:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 19:16:30,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-21 19:16:30,979 INFO L175 Difference]: Start difference. First operand has 235 places, 209 transitions, 2321 flow. Second operand 10 states and 108 transitions. [2024-06-21 19:16:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 221 transitions, 2815 flow [2024-06-21 19:16:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 221 transitions, 2743 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:31,146 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2325 flow [2024-06-21 19:16:31,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2325, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-21 19:16:31,146 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-21 19:16:31,147 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2325 flow [2024-06-21 19:16:31,147 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) [2024-06-21 19:16:31,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:31,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 19:16:31,147 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)] === [2024-06-21 19:16:31,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1012896040, now seen corresponding path program 10 times [2024-06-21 19:16:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786071096] [2024-06-21 19:16:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786071096] [2024-06-21 19:16:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786071096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087998472] [2024-06-21 19:16:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:32,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:32,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:32,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:32,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2325 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) [2024-06-21 19:16:32,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:32,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:32,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:33,376 INFO L124 PetriNetUnfolderBase]: 543/967 cut-off events. [2024-06-21 19:16:33,376 INFO L125 PetriNetUnfolderBase]: For 68288/68288 co-relation queries the response was YES. [2024-06-21 19:16:33,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 967 events. 543/967 cut-off events. For 68288/68288 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4821 event pairs, 102 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6687. Up to 896 conditions per place. [2024-06-21 19:16:33,385 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 196 selfloop transitions, 30 changer transitions 0/228 dead transitions. [2024-06-21 19:16:33,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 228 transitions, 2879 flow [2024-06-21 19:16:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:16:33,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:16:33,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-21 19:16:33,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-21 19:16:33,386 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2325 flow. Second operand 13 states and 138 transitions. [2024-06-21 19:16:33,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 228 transitions, 2879 flow [2024-06-21 19:16:33,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 228 transitions, 2813 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:33,536 INFO L231 Difference]: Finished difference. Result has 242 places, 212 transitions, 2376 flow [2024-06-21 19:16:33,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2376, PETRI_PLACES=242, PETRI_TRANSITIONS=212} [2024-06-21 19:16:33,537 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 213 predicate places. [2024-06-21 19:16:33,537 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 212 transitions, 2376 flow [2024-06-21 19:16:33,537 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) [2024-06-21 19:16:33,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:33,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:33,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 19:16:33,538 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)] === [2024-06-21 19:16:33,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103430, now seen corresponding path program 11 times [2024-06-21 19:16:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340670180] [2024-06-21 19:16:33,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:33,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:35,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:35,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340670180] [2024-06-21 19:16:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340670180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:35,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127458527] [2024-06-21 19:16:35,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:35,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:35,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:35,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:35,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 212 transitions, 2376 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) [2024-06-21 19:16:35,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:35,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:35,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:35,746 INFO L124 PetriNetUnfolderBase]: 559/993 cut-off events. [2024-06-21 19:16:35,747 INFO L125 PetriNetUnfolderBase]: For 75557/75557 co-relation queries the response was YES. [2024-06-21 19:16:35,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 993 events. 559/993 cut-off events. For 75557/75557 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4978 event pairs, 101 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 7081. Up to 896 conditions per place. [2024-06-21 19:16:35,754 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 192 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-21 19:16:35,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 231 transitions, 3126 flow [2024-06-21 19:16:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 19:16:35,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-21 19:16:35,756 INFO L175 Difference]: Start difference. First operand has 242 places, 212 transitions, 2376 flow. Second operand 11 states and 125 transitions. [2024-06-21 19:16:35,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 231 transitions, 3126 flow [2024-06-21 19:16:35,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 231 transitions, 3031 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-21 19:16:35,927 INFO L231 Difference]: Finished difference. Result has 243 places, 216 transitions, 2473 flow [2024-06-21 19:16:35,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2473, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2024-06-21 19:16:35,928 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-21 19:16:35,928 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 2473 flow [2024-06-21 19:16:35,928 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) [2024-06-21 19:16:35,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:35,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:35,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 19:16:35,929 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)] === [2024-06-21 19:16:35,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1013097850, now seen corresponding path program 12 times [2024-06-21 19:16:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532367911] [2024-06-21 19:16:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532367911] [2024-06-21 19:16:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532367911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:37,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:37,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:37,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6703944] [2024-06-21 19:16:37,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:37,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 2473 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) [2024-06-21 19:16:37,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:37,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:37,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:38,077 INFO L124 PetriNetUnfolderBase]: 555/987 cut-off events. [2024-06-21 19:16:38,077 INFO L125 PetriNetUnfolderBase]: For 72214/72214 co-relation queries the response was YES. [2024-06-21 19:16:38,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 987 events. 555/987 cut-off events. For 72214/72214 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4950 event pairs, 101 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 6916. Up to 916 conditions per place. [2024-06-21 19:16:38,087 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 199 selfloop transitions, 29 changer transitions 0/230 dead transitions. [2024-06-21 19:16:38,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 230 transitions, 2979 flow [2024-06-21 19:16:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 19:16:38,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-21 19:16:38,088 INFO L175 Difference]: Start difference. First operand has 243 places, 216 transitions, 2473 flow. Second operand 11 states and 122 transitions. [2024-06-21 19:16:38,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 230 transitions, 2979 flow [2024-06-21 19:16:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 230 transitions, 2855 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:38,267 INFO L231 Difference]: Finished difference. Result has 246 places, 216 transitions, 2412 flow [2024-06-21 19:16:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2412, PETRI_PLACES=246, PETRI_TRANSITIONS=216} [2024-06-21 19:16:38,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-21 19:16:38,268 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 216 transitions, 2412 flow [2024-06-21 19:16:38,268 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) [2024-06-21 19:16:38,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:38,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 19:16:38,268 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)] === [2024-06-21 19:16:38,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1013103585, now seen corresponding path program 11 times [2024-06-21 19:16:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464497802] [2024-06-21 19:16:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:39,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:39,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464497802] [2024-06-21 19:16:39,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464497802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:39,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:39,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539898222] [2024-06-21 19:16:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:39,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:39,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 216 transitions, 2412 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) [2024-06-21 19:16:39,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:39,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:39,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:40,097 INFO L124 PetriNetUnfolderBase]: 559/995 cut-off events. [2024-06-21 19:16:40,098 INFO L125 PetriNetUnfolderBase]: For 73780/73780 co-relation queries the response was YES. [2024-06-21 19:16:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 995 events. 559/995 cut-off events. For 73780/73780 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4988 event pairs, 109 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6900. Up to 958 conditions per place. [2024-06-21 19:16:40,106 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 205 selfloop transitions, 20 changer transitions 0/227 dead transitions. [2024-06-21 19:16:40,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 227 transitions, 2904 flow [2024-06-21 19:16:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 19:16:40,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-21 19:16:40,108 INFO L175 Difference]: Start difference. First operand has 246 places, 216 transitions, 2412 flow. Second operand 10 states and 107 transitions. [2024-06-21 19:16:40,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 227 transitions, 2904 flow [2024-06-21 19:16:40,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 227 transitions, 2830 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 19:16:40,284 INFO L231 Difference]: Finished difference. Result has 246 places, 217 transitions, 2404 flow [2024-06-21 19:16:40,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=246, PETRI_TRANSITIONS=217} [2024-06-21 19:16:40,285 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-21 19:16:40,285 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 217 transitions, 2404 flow [2024-06-21 19:16:40,285 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) [2024-06-21 19:16:40,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:40,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:40,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 19:16:40,286 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)] === [2024-06-21 19:16:40,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1231618128, now seen corresponding path program 13 times [2024-06-21 19:16:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061184070] [2024-06-21 19:16:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:40,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:41,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061184070] [2024-06-21 19:16:41,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061184070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:41,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822739974] [2024-06-21 19:16:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:41,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:41,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:41,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:41,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:41,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 217 transitions, 2404 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) [2024-06-21 19:16:41,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:41,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:41,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:42,235 INFO L124 PetriNetUnfolderBase]: 565/1005 cut-off events. [2024-06-21 19:16:42,236 INFO L125 PetriNetUnfolderBase]: For 75979/75979 co-relation queries the response was YES. [2024-06-21 19:16:42,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 1005 events. 565/1005 cut-off events. For 75979/75979 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5074 event pairs, 109 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6978. Up to 963 conditions per place. [2024-06-21 19:16:42,243 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 204 selfloop transitions, 23 changer transitions 0/229 dead transitions. [2024-06-21 19:16:42,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 229 transitions, 2932 flow [2024-06-21 19:16:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 19:16:42,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-21 19:16:42,244 INFO L175 Difference]: Start difference. First operand has 246 places, 217 transitions, 2404 flow. Second operand 10 states and 109 transitions. [2024-06-21 19:16:42,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 229 transitions, 2932 flow [2024-06-21 19:16:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 229 transitions, 2878 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:42,418 INFO L231 Difference]: Finished difference. Result has 248 places, 219 transitions, 2454 flow [2024-06-21 19:16:42,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=248, PETRI_TRANSITIONS=219} [2024-06-21 19:16:42,418 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 219 predicate places. [2024-06-21 19:16:42,418 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 219 transitions, 2454 flow [2024-06-21 19:16:42,419 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) [2024-06-21 19:16:42,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:42,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 19:16:42,419 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)] === [2024-06-21 19:16:42,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1231626064, now seen corresponding path program 3 times [2024-06-21 19:16:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405460730] [2024-06-21 19:16:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:43,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:43,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405460730] [2024-06-21 19:16:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405460730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15219222] [2024-06-21 19:16:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:43,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:43,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 219 transitions, 2454 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) [2024-06-21 19:16:43,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:44,292 INFO L124 PetriNetUnfolderBase]: 569/1013 cut-off events. [2024-06-21 19:16:44,292 INFO L125 PetriNetUnfolderBase]: For 78098/78098 co-relation queries the response was YES. [2024-06-21 19:16:44,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7174 conditions, 1013 events. 569/1013 cut-off events. For 78098/78098 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5136 event pairs, 112 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 7057. Up to 974 conditions per place. [2024-06-21 19:16:44,301 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 208 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-06-21 19:16:44,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 230 transitions, 2958 flow [2024-06-21 19:16:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-21 19:16:44,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-21 19:16:44,302 INFO L175 Difference]: Start difference. First operand has 248 places, 219 transitions, 2454 flow. Second operand 11 states and 112 transitions. [2024-06-21 19:16:44,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 230 transitions, 2958 flow [2024-06-21 19:16:44,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 230 transitions, 2826 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:44,505 INFO L231 Difference]: Finished difference. Result has 250 places, 220 transitions, 2395 flow [2024-06-21 19:16:44,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=250, PETRI_TRANSITIONS=220} [2024-06-21 19:16:44,505 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 221 predicate places. [2024-06-21 19:16:44,505 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 220 transitions, 2395 flow [2024-06-21 19:16:44,505 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) [2024-06-21 19:16:44,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:44,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:44,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 19:16:44,506 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)] === [2024-06-21 19:16:44,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:44,506 INFO L85 PathProgramCache]: Analyzing trace with hash -818948694, now seen corresponding path program 4 times [2024-06-21 19:16:44,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:44,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353032622] [2024-06-21 19:16:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:45,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353032622] [2024-06-21 19:16:45,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353032622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:45,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:45,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:45,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386946164] [2024-06-21 19:16:45,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:45,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:45,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:45,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:45,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:45,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 220 transitions, 2395 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) [2024-06-21 19:16:45,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:45,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:45,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:46,277 INFO L124 PetriNetUnfolderBase]: 573/1021 cut-off events. [2024-06-21 19:16:46,277 INFO L125 PetriNetUnfolderBase]: For 80066/80066 co-relation queries the response was YES. [2024-06-21 19:16:46,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 1021 events. 573/1021 cut-off events. For 80066/80066 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5208 event pairs, 109 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 7070. Up to 981 conditions per place. [2024-06-21 19:16:46,287 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 210 selfloop transitions, 19 changer transitions 0/231 dead transitions. [2024-06-21 19:16:46,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 231 transitions, 2907 flow [2024-06-21 19:16:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-21 19:16:46,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-21 19:16:46,288 INFO L175 Difference]: Start difference. First operand has 250 places, 220 transitions, 2395 flow. Second operand 10 states and 106 transitions. [2024-06-21 19:16:46,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 231 transitions, 2907 flow [2024-06-21 19:16:46,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 231 transitions, 2842 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:46,508 INFO L231 Difference]: Finished difference. Result has 251 places, 221 transitions, 2402 flow [2024-06-21 19:16:46,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2402, PETRI_PLACES=251, PETRI_TRANSITIONS=221} [2024-06-21 19:16:46,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-21 19:16:46,509 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 221 transitions, 2402 flow [2024-06-21 19:16:46,509 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) [2024-06-21 19:16:46,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:46,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 19:16:46,510 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)] === [2024-06-21 19:16:46,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1490499934, now seen corresponding path program 5 times [2024-06-21 19:16:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:46,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274783449] [2024-06-21 19:16:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:47,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:47,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274783449] [2024-06-21 19:16:47,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274783449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:47,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:47,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589400819] [2024-06-21 19:16:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:47,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:47,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 221 transitions, 2402 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) [2024-06-21 19:16:47,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:47,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:47,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:48,332 INFO L124 PetriNetUnfolderBase]: 577/1029 cut-off events. [2024-06-21 19:16:48,332 INFO L125 PetriNetUnfolderBase]: For 82226/82226 co-relation queries the response was YES. [2024-06-21 19:16:48,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1029 events. 577/1029 cut-off events. For 82226/82226 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5252 event pairs, 111 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 7130. Up to 993 conditions per place. [2024-06-21 19:16:48,342 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 215 selfloop transitions, 15 changer transitions 0/232 dead transitions. [2024-06-21 19:16:48,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 232 transitions, 2914 flow [2024-06-21 19:16:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-21 19:16:48,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-21 19:16:48,344 INFO L175 Difference]: Start difference. First operand has 251 places, 221 transitions, 2402 flow. Second operand 10 states and 102 transitions. [2024-06-21 19:16:48,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 232 transitions, 2914 flow [2024-06-21 19:16:48,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 232 transitions, 2852 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:48,558 INFO L231 Difference]: Finished difference. Result has 253 places, 222 transitions, 2406 flow [2024-06-21 19:16:48,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2406, PETRI_PLACES=253, PETRI_TRANSITIONS=222} [2024-06-21 19:16:48,558 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-21 19:16:48,558 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 222 transitions, 2406 flow [2024-06-21 19:16:48,559 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) [2024-06-21 19:16:48,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:48,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 19:16:48,559 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)] === [2024-06-21 19:16:48,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:48,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1224468288, now seen corresponding path program 14 times [2024-06-21 19:16:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849083335] [2024-06-21 19:16:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:50,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849083335] [2024-06-21 19:16:50,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849083335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:50,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373402377] [2024-06-21 19:16:50,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:50,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:50,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:50,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:50,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:50,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 222 transitions, 2406 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) [2024-06-21 19:16:50,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:50,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:50,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:50,642 INFO L124 PetriNetUnfolderBase]: 583/1039 cut-off events. [2024-06-21 19:16:50,643 INFO L125 PetriNetUnfolderBase]: For 84445/84445 co-relation queries the response was YES. [2024-06-21 19:16:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 1039 events. 583/1039 cut-off events. For 84445/84445 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5319 event pairs, 112 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 7210. Up to 972 conditions per place. [2024-06-21 19:16:50,652 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 208 selfloop transitions, 26 changer transitions 0/236 dead transitions. [2024-06-21 19:16:50,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 236 transitions, 2968 flow [2024-06-21 19:16:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-21 19:16:50,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-21 19:16:50,653 INFO L175 Difference]: Start difference. First operand has 253 places, 222 transitions, 2406 flow. Second operand 11 states and 119 transitions. [2024-06-21 19:16:50,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 236 transitions, 2968 flow [2024-06-21 19:16:50,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 236 transitions, 2912 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:50,872 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 2467 flow [2024-06-21 19:16:50,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2467, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2024-06-21 19:16:50,872 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-21 19:16:50,872 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 2467 flow [2024-06-21 19:16:50,872 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) [2024-06-21 19:16:50,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:50,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:50,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 19:16:50,873 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)] === [2024-06-21 19:16:50,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1351762466, now seen corresponding path program 15 times [2024-06-21 19:16:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:50,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069377622] [2024-06-21 19:16:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:50,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069377622] [2024-06-21 19:16:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069377622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:52,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:52,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:52,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128359179] [2024-06-21 19:16:52,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:52,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:52,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:52,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 2467 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) [2024-06-21 19:16:52,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:52,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:53,057 INFO L124 PetriNetUnfolderBase]: 584/1041 cut-off events. [2024-06-21 19:16:53,057 INFO L125 PetriNetUnfolderBase]: For 83379/83379 co-relation queries the response was YES. [2024-06-21 19:16:53,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7310 conditions, 1041 events. 584/1041 cut-off events. For 83379/83379 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5338 event pairs, 111 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7189. Up to 974 conditions per place. [2024-06-21 19:16:53,067 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2024-06-21 19:16:53,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 239 transitions, 3045 flow [2024-06-21 19:16:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:53,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 19:16:53,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-21 19:16:53,068 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 2467 flow. Second operand 11 states and 118 transitions. [2024-06-21 19:16:53,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 239 transitions, 3045 flow [2024-06-21 19:16:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 239 transitions, 2950 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:53,262 INFO L231 Difference]: Finished difference. Result has 258 places, 226 transitions, 2497 flow [2024-06-21 19:16:53,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2497, PETRI_PLACES=258, PETRI_TRANSITIONS=226} [2024-06-21 19:16:53,263 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 229 predicate places. [2024-06-21 19:16:53,263 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 226 transitions, 2497 flow [2024-06-21 19:16:53,263 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) [2024-06-21 19:16:53,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:53,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:53,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 19:16:53,264 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)] === [2024-06-21 19:16:53,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1756864769, now seen corresponding path program 12 times [2024-06-21 19:16:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323033892] [2024-06-21 19:16:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323033892] [2024-06-21 19:16:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323033892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:54,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:54,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:54,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954450053] [2024-06-21 19:16:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:54,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 226 transitions, 2497 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) [2024-06-21 19:16:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:54,967 INFO L124 PetriNetUnfolderBase]: 581/1036 cut-off events. [2024-06-21 19:16:54,967 INFO L125 PetriNetUnfolderBase]: For 78483/78483 co-relation queries the response was YES. [2024-06-21 19:16:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 1036 events. 581/1036 cut-off events. For 78483/78483 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5299 event pairs, 116 based on Foata normal form. 2/1037 useless extension candidates. Maximal degree in co-relation 6972. Up to 1005 conditions per place. [2024-06-21 19:16:54,977 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 217 selfloop transitions, 17 changer transitions 0/236 dead transitions. [2024-06-21 19:16:54,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 236 transitions, 2987 flow [2024-06-21 19:16:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:16:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:16:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 19:16:54,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 19:16:54,978 INFO L175 Difference]: Start difference. First operand has 258 places, 226 transitions, 2497 flow. Second operand 10 states and 105 transitions. [2024-06-21 19:16:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 236 transitions, 2987 flow [2024-06-21 19:16:55,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 236 transitions, 2874 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-21 19:16:55,160 INFO L231 Difference]: Finished difference. Result has 259 places, 226 transitions, 2422 flow [2024-06-21 19:16:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2422, PETRI_PLACES=259, PETRI_TRANSITIONS=226} [2024-06-21 19:16:55,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-21 19:16:55,161 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 226 transitions, 2422 flow [2024-06-21 19:16:55,161 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) [2024-06-21 19:16:55,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:55,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 19:16:55,162 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)] === [2024-06-21 19:16:55,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:55,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1756864924, now seen corresponding path program 16 times [2024-06-21 19:16:55,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:55,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106729258] [2024-06-21 19:16:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:56,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:56,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106729258] [2024-06-21 19:16:56,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106729258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:56,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:56,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:16:56,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208978919] [2024-06-21 19:16:56,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:16:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:16:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:16:56,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:16:56,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 226 transitions, 2422 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) [2024-06-21 19:16:56,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:56,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:16:56,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:57,059 INFO L124 PetriNetUnfolderBase]: 577/1030 cut-off events. [2024-06-21 19:16:57,059 INFO L125 PetriNetUnfolderBase]: For 72942/72942 co-relation queries the response was YES. [2024-06-21 19:16:57,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1030 events. 577/1030 cut-off events. For 72942/72942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5272 event pairs, 109 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 6664. Up to 925 conditions per place. [2024-06-21 19:16:57,067 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 196 selfloop transitions, 42 changer transitions 0/240 dead transitions. [2024-06-21 19:16:57,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 240 transitions, 3108 flow [2024-06-21 19:16:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:16:57,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:16:57,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-21 19:16:57,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:16:57,069 INFO L175 Difference]: Start difference. First operand has 259 places, 226 transitions, 2422 flow. Second operand 11 states and 121 transitions. [2024-06-21 19:16:57,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 240 transitions, 3108 flow [2024-06-21 19:16:57,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 240 transitions, 3050 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 19:16:57,244 INFO L231 Difference]: Finished difference. Result has 262 places, 226 transitions, 2453 flow [2024-06-21 19:16:57,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2364, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2453, PETRI_PLACES=262, PETRI_TRANSITIONS=226} [2024-06-21 19:16:57,245 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-21 19:16:57,245 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 226 transitions, 2453 flow [2024-06-21 19:16:57,245 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) [2024-06-21 19:16:57,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:57,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:57,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 19:16:57,245 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)] === [2024-06-21 19:16:57,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1958250309, now seen corresponding path program 13 times [2024-06-21 19:16:57,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:57,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912272749] [2024-06-21 19:16:57,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:57,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:16:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:16:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:16:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912272749] [2024-06-21 19:16:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912272749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:16:58,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:16:58,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:16:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550264573] [2024-06-21 19:16:58,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:16:58,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:16:58,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:16:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:16:58,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:16:58,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:16:58,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 226 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:58,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:16:58,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:16:58,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:16:59,284 INFO L124 PetriNetUnfolderBase]: 581/1038 cut-off events. [2024-06-21 19:16:59,285 INFO L125 PetriNetUnfolderBase]: For 74603/74603 co-relation queries the response was YES. [2024-06-21 19:16:59,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6867 conditions, 1038 events. 581/1038 cut-off events. For 74603/74603 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5340 event pairs, 56 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 6743. Up to 658 conditions per place. [2024-06-21 19:16:59,294 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 160 selfloop transitions, 82 changer transitions 0/244 dead transitions. [2024-06-21 19:16:59,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 244 transitions, 3155 flow [2024-06-21 19:16:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:16:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:16:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 19:16:59,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 19:16:59,295 INFO L175 Difference]: Start difference. First operand has 262 places, 226 transitions, 2453 flow. Second operand 8 states and 110 transitions. [2024-06-21 19:16:59,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 244 transitions, 3155 flow [2024-06-21 19:16:59,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 244 transitions, 3033 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 19:16:59,500 INFO L231 Difference]: Finished difference. Result has 260 places, 227 transitions, 2509 flow [2024-06-21 19:16:59,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2331, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2509, PETRI_PLACES=260, PETRI_TRANSITIONS=227} [2024-06-21 19:16:59,501 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-21 19:16:59,501 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 227 transitions, 2509 flow [2024-06-21 19:16:59,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:16:59,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:16:59,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:16:59,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 19:16:59,502 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)] === [2024-06-21 19:16:59,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:16:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1956372484, now seen corresponding path program 17 times [2024-06-21 19:16:59,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:16:59,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950353836] [2024-06-21 19:16:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:16:59,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:16:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950353836] [2024-06-21 19:17:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950353836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:00,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881580945] [2024-06-21 19:17:00,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:00,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:00,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:01,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:01,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 227 transitions, 2509 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:01,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:01,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:01,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:01,457 INFO L124 PetriNetUnfolderBase]: 587/1048 cut-off events. [2024-06-21 19:17:01,457 INFO L125 PetriNetUnfolderBase]: For 76219/76219 co-relation queries the response was YES. [2024-06-21 19:17:01,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1048 events. 587/1048 cut-off events. For 76219/76219 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5391 event pairs, 70 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 6895. Up to 570 conditions per place. [2024-06-21 19:17:01,467 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 122 selfloop transitions, 124 changer transitions 0/248 dead transitions. [2024-06-21 19:17:01,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 248 transitions, 3277 flow [2024-06-21 19:17:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 19:17:01,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-21 19:17:01,469 INFO L175 Difference]: Start difference. First operand has 260 places, 227 transitions, 2509 flow. Second operand 9 states and 125 transitions. [2024-06-21 19:17:01,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 248 transitions, 3277 flow [2024-06-21 19:17:01,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 248 transitions, 3137 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:01,682 INFO L231 Difference]: Finished difference. Result has 263 places, 231 transitions, 2683 flow [2024-06-21 19:17:01,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2683, PETRI_PLACES=263, PETRI_TRANSITIONS=231} [2024-06-21 19:17:01,682 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-21 19:17:01,682 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 231 transitions, 2683 flow [2024-06-21 19:17:01,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:01,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:01,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:01,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 19:17:01,683 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)] === [2024-06-21 19:17:01,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1956372639, now seen corresponding path program 14 times [2024-06-21 19:17:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821129863] [2024-06-21 19:17:01,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:03,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821129863] [2024-06-21 19:17:03,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821129863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:03,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:03,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:03,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253974631] [2024-06-21 19:17:03,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:03,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:03,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:03,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:03,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 231 transitions, 2683 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:03,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:03,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:03,400 INFO L124 PetriNetUnfolderBase]: 591/1056 cut-off events. [2024-06-21 19:17:03,400 INFO L125 PetriNetUnfolderBase]: For 76549/76549 co-relation queries the response was YES. [2024-06-21 19:17:03,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1056 events. 591/1056 cut-off events. For 76549/76549 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5432 event pairs, 78 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 7084. Up to 863 conditions per place. [2024-06-21 19:17:03,411 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 173 selfloop transitions, 71 changer transitions 0/246 dead transitions. [2024-06-21 19:17:03,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 246 transitions, 3214 flow [2024-06-21 19:17:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:17:03,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:17:03,412 INFO L175 Difference]: Start difference. First operand has 263 places, 231 transitions, 2683 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:17:03,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 246 transitions, 3214 flow [2024-06-21 19:17:03,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 246 transitions, 3078 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:03,616 INFO L231 Difference]: Finished difference. Result has 265 places, 232 transitions, 2702 flow [2024-06-21 19:17:03,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2702, PETRI_PLACES=265, PETRI_TRANSITIONS=232} [2024-06-21 19:17:03,616 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-21 19:17:03,616 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 232 transitions, 2702 flow [2024-06-21 19:17:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:03,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:03,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:03,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 19:17:03,617 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)] === [2024-06-21 19:17:03,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1956376359, now seen corresponding path program 15 times [2024-06-21 19:17:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:03,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59884916] [2024-06-21 19:17:03,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:05,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59884916] [2024-06-21 19:17:05,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59884916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:05,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:05,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677567513] [2024-06-21 19:17:05,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:05,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:05,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:05,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 232 transitions, 2702 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:05,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:05,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:05,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:05,579 INFO L124 PetriNetUnfolderBase]: 595/1064 cut-off events. [2024-06-21 19:17:05,580 INFO L125 PetriNetUnfolderBase]: For 76325/76325 co-relation queries the response was YES. [2024-06-21 19:17:05,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7266 conditions, 1064 events. 595/1064 cut-off events. For 76325/76325 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5525 event pairs, 74 based on Foata normal form. 2/1065 useless extension candidates. Maximal degree in co-relation 7142. Up to 843 conditions per place. [2024-06-21 19:17:05,589 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 174 selfloop transitions, 72 changer transitions 0/248 dead transitions. [2024-06-21 19:17:05,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 248 transitions, 3241 flow [2024-06-21 19:17:05,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 19:17:05,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 19:17:05,590 INFO L175 Difference]: Start difference. First operand has 265 places, 232 transitions, 2702 flow. Second operand 8 states and 112 transitions. [2024-06-21 19:17:05,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 248 transitions, 3241 flow [2024-06-21 19:17:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 248 transitions, 3099 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:05,783 INFO L231 Difference]: Finished difference. Result has 265 places, 233 transitions, 2719 flow [2024-06-21 19:17:05,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2719, PETRI_PLACES=265, PETRI_TRANSITIONS=233} [2024-06-21 19:17:05,784 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-21 19:17:05,784 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 233 transitions, 2719 flow [2024-06-21 19:17:05,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:05,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:05,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:05,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 19:17:05,785 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)] === [2024-06-21 19:17:05,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1093776439, now seen corresponding path program 16 times [2024-06-21 19:17:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:05,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22254580] [2024-06-21 19:17:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:07,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22254580] [2024-06-21 19:17:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22254580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:07,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:07,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375387968] [2024-06-21 19:17:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:07,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:07,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 233 transitions, 2719 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:07,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:07,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:07,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:07,494 INFO L124 PetriNetUnfolderBase]: 599/1072 cut-off events. [2024-06-21 19:17:07,494 INFO L125 PetriNetUnfolderBase]: For 76460/76460 co-relation queries the response was YES. [2024-06-21 19:17:07,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7319 conditions, 1072 events. 599/1072 cut-off events. For 76460/76460 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5582 event pairs, 76 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7196. Up to 950 conditions per place. [2024-06-21 19:17:07,504 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 195 selfloop transitions, 48 changer transitions 0/245 dead transitions. [2024-06-21 19:17:07,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 245 transitions, 3240 flow [2024-06-21 19:17:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-21 19:17:07,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-21 19:17:07,506 INFO L175 Difference]: Start difference. First operand has 265 places, 233 transitions, 2719 flow. Second operand 9 states and 114 transitions. [2024-06-21 19:17:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 245 transitions, 3240 flow [2024-06-21 19:17:07,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 245 transitions, 3094 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:07,703 INFO L231 Difference]: Finished difference. Result has 267 places, 234 transitions, 2686 flow [2024-06-21 19:17:07,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2686, PETRI_PLACES=267, PETRI_TRANSITIONS=234} [2024-06-21 19:17:07,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-21 19:17:07,703 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 234 transitions, 2686 flow [2024-06-21 19:17:07,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:07,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:07,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:07,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 19:17:07,706 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)] === [2024-06-21 19:17:07,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:07,706 INFO L85 PathProgramCache]: Analyzing trace with hash 705897774, now seen corresponding path program 18 times [2024-06-21 19:17:07,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:07,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779622279] [2024-06-21 19:17:07,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:07,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779622279] [2024-06-21 19:17:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779622279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:09,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812560919] [2024-06-21 19:17:09,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:09,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:09,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:09,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 234 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:09,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:09,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:09,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:09,651 INFO L124 PetriNetUnfolderBase]: 605/1082 cut-off events. [2024-06-21 19:17:09,651 INFO L125 PetriNetUnfolderBase]: For 76437/76437 co-relation queries the response was YES. [2024-06-21 19:17:09,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 1082 events. 605/1082 cut-off events. For 76437/76437 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5640 event pairs, 61 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 7204. Up to 823 conditions per place. [2024-06-21 19:17:09,659 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 171 selfloop transitions, 77 changer transitions 0/250 dead transitions. [2024-06-21 19:17:09,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 250 transitions, 3256 flow [2024-06-21 19:17:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 19:17:09,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-21 19:17:09,660 INFO L175 Difference]: Start difference. First operand has 267 places, 234 transitions, 2686 flow. Second operand 9 states and 122 transitions. [2024-06-21 19:17:09,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 250 transitions, 3256 flow [2024-06-21 19:17:09,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 250 transitions, 3150 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:09,860 INFO L231 Difference]: Finished difference. Result has 268 places, 236 transitions, 2772 flow [2024-06-21 19:17:09,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2772, PETRI_PLACES=268, PETRI_TRANSITIONS=236} [2024-06-21 19:17:09,861 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-21 19:17:09,861 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 236 transitions, 2772 flow [2024-06-21 19:17:09,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:09,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:09,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:09,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 19:17:09,862 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)] === [2024-06-21 19:17:09,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:09,862 INFO L85 PathProgramCache]: Analyzing trace with hash 705749749, now seen corresponding path program 17 times [2024-06-21 19:17:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:09,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903182574] [2024-06-21 19:17:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:11,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903182574] [2024-06-21 19:17:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903182574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:11,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:11,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:11,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275330696] [2024-06-21 19:17:11,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:11,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:11,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:11,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 236 transitions, 2772 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:11,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:11,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:11,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:11,606 INFO L124 PetriNetUnfolderBase]: 616/1103 cut-off events. [2024-06-21 19:17:11,606 INFO L125 PetriNetUnfolderBase]: For 83776/83776 co-relation queries the response was YES. [2024-06-21 19:17:11,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7677 conditions, 1103 events. 616/1103 cut-off events. For 83776/83776 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5776 event pairs, 75 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7553. Up to 926 conditions per place. [2024-06-21 19:17:11,616 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 192 selfloop transitions, 57 changer transitions 0/251 dead transitions. [2024-06-21 19:17:11,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 251 transitions, 3490 flow [2024-06-21 19:17:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 19:17:11,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 19:17:11,617 INFO L175 Difference]: Start difference. First operand has 268 places, 236 transitions, 2772 flow. Second operand 8 states and 110 transitions. [2024-06-21 19:17:11,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 251 transitions, 3490 flow [2024-06-21 19:17:11,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 251 transitions, 3328 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:11,858 INFO L231 Difference]: Finished difference. Result has 269 places, 238 transitions, 2754 flow [2024-06-21 19:17:11,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2754, PETRI_PLACES=269, PETRI_TRANSITIONS=238} [2024-06-21 19:17:11,859 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-21 19:17:11,859 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 238 transitions, 2754 flow [2024-06-21 19:17:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:11,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:11,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 19:17:11,859 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)] === [2024-06-21 19:17:11,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash 705753469, now seen corresponding path program 18 times [2024-06-21 19:17:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286043295] [2024-06-21 19:17:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:13,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286043295] [2024-06-21 19:17:13,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286043295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:13,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098452259] [2024-06-21 19:17:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:13,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:13,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 238 transitions, 2754 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:13,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:13,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:13,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:13,642 INFO L124 PetriNetUnfolderBase]: 613/1098 cut-off events. [2024-06-21 19:17:13,643 INFO L125 PetriNetUnfolderBase]: For 78440/78440 co-relation queries the response was YES. [2024-06-21 19:17:13,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 1098 events. 613/1098 cut-off events. For 78440/78440 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5754 event pairs, 63 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 7322. Up to 827 conditions per place. [2024-06-21 19:17:13,653 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 170 selfloop transitions, 80 changer transitions 0/252 dead transitions. [2024-06-21 19:17:13,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 252 transitions, 3298 flow [2024-06-21 19:17:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-21 19:17:13,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-21 19:17:13,656 INFO L175 Difference]: Start difference. First operand has 269 places, 238 transitions, 2754 flow. Second operand 8 states and 115 transitions. [2024-06-21 19:17:13,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 252 transitions, 3298 flow [2024-06-21 19:17:13,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 252 transitions, 3218 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 19:17:13,883 INFO L231 Difference]: Finished difference. Result has 272 places, 238 transitions, 2840 flow [2024-06-21 19:17:13,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2840, PETRI_PLACES=272, PETRI_TRANSITIONS=238} [2024-06-21 19:17:13,884 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-21 19:17:13,884 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 238 transitions, 2840 flow [2024-06-21 19:17:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:13,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:13,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:13,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 19:17:13,884 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:13,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:13,885 INFO L85 PathProgramCache]: Analyzing trace with hash 705753624, now seen corresponding path program 19 times [2024-06-21 19:17:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:13,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060503315] [2024-06-21 19:17:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060503315] [2024-06-21 19:17:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060503315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027844468] [2024-06-21 19:17:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:15,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:15,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:15,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 238 transitions, 2840 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:15,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:15,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:15,691 INFO L124 PetriNetUnfolderBase]: 619/1108 cut-off events. [2024-06-21 19:17:15,691 INFO L125 PetriNetUnfolderBase]: For 78648/78648 co-relation queries the response was YES. [2024-06-21 19:17:15,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 1108 events. 619/1108 cut-off events. For 78648/78648 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5832 event pairs, 64 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 7539. Up to 816 conditions per place. [2024-06-21 19:17:15,701 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 163 selfloop transitions, 89 changer transitions 0/254 dead transitions. [2024-06-21 19:17:15,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 254 transitions, 3422 flow [2024-06-21 19:17:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 19:17:15,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-21 19:17:15,702 INFO L175 Difference]: Start difference. First operand has 272 places, 238 transitions, 2840 flow. Second operand 9 states and 124 transitions. [2024-06-21 19:17:15,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 254 transitions, 3422 flow [2024-06-21 19:17:15,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 254 transitions, 3248 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:15,922 INFO L231 Difference]: Finished difference. Result has 273 places, 240 transitions, 2886 flow [2024-06-21 19:17:15,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=273, PETRI_TRANSITIONS=240} [2024-06-21 19:17:15,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-21 19:17:15,923 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 240 transitions, 2886 flow [2024-06-21 19:17:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:15,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:15,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:15,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 19:17:15,924 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:15,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1630996679, now seen corresponding path program 19 times [2024-06-21 19:17:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30241183] [2024-06-21 19:17:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:17,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30241183] [2024-06-21 19:17:17,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30241183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:17,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:17,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:17,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738182457] [2024-06-21 19:17:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:17,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:17,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 240 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:17,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:17,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:17,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:17,640 INFO L124 PetriNetUnfolderBase]: 623/1117 cut-off events. [2024-06-21 19:17:17,640 INFO L125 PetriNetUnfolderBase]: For 78795/78795 co-relation queries the response was YES. [2024-06-21 19:17:17,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 1117 events. 623/1117 cut-off events. For 78795/78795 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5888 event pairs, 52 based on Foata normal form. 2/1118 useless extension candidates. Maximal degree in co-relation 7601. Up to 866 conditions per place. [2024-06-21 19:17:17,651 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 183 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-21 19:17:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 260 transitions, 3640 flow [2024-06-21 19:17:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-21 19:17:17,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-21 19:17:17,652 INFO L175 Difference]: Start difference. First operand has 273 places, 240 transitions, 2886 flow. Second operand 8 states and 117 transitions. [2024-06-21 19:17:17,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 260 transitions, 3640 flow [2024-06-21 19:17:17,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 260 transitions, 3450 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:17,896 INFO L231 Difference]: Finished difference. Result has 274 places, 241 transitions, 2865 flow [2024-06-21 19:17:17,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2865, PETRI_PLACES=274, PETRI_TRANSITIONS=241} [2024-06-21 19:17:17,899 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-21 19:17:17,899 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 241 transitions, 2865 flow [2024-06-21 19:17:17,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:17,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:17,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:17,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 19:17:17,900 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:17,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:17,900 INFO L85 PathProgramCache]: Analyzing trace with hash -730778746, now seen corresponding path program 20 times [2024-06-21 19:17:17,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582045691] [2024-06-21 19:17:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:17,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:19,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582045691] [2024-06-21 19:17:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582045691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:19,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:19,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530105594] [2024-06-21 19:17:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:19,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:19,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:19,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 241 transitions, 2865 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:19,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:19,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:19,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:19,945 INFO L124 PetriNetUnfolderBase]: 632/1132 cut-off events. [2024-06-21 19:17:19,945 INFO L125 PetriNetUnfolderBase]: For 80496/80496 co-relation queries the response was YES. [2024-06-21 19:17:19,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 1132 events. 632/1132 cut-off events. For 80496/80496 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6017 event pairs, 54 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 7674. Up to 734 conditions per place. [2024-06-21 19:17:19,956 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 145 selfloop transitions, 119 changer transitions 0/266 dead transitions. [2024-06-21 19:17:19,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 266 transitions, 3696 flow [2024-06-21 19:17:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-21 19:17:19,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2024-06-21 19:17:19,957 INFO L175 Difference]: Start difference. First operand has 274 places, 241 transitions, 2865 flow. Second operand 9 states and 131 transitions. [2024-06-21 19:17:19,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 266 transitions, 3696 flow [2024-06-21 19:17:20,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 266 transitions, 3482 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:20,202 INFO L231 Difference]: Finished difference. Result has 276 places, 245 transitions, 3021 flow [2024-06-21 19:17:20,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3021, PETRI_PLACES=276, PETRI_TRANSITIONS=245} [2024-06-21 19:17:20,203 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-21 19:17:20,203 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 245 transitions, 3021 flow [2024-06-21 19:17:20,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:20,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:20,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 19:17:20,204 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:20,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -730778901, now seen corresponding path program 20 times [2024-06-21 19:17:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302679254] [2024-06-21 19:17:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302679254] [2024-06-21 19:17:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302679254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167437333] [2024-06-21 19:17:21,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:21,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:21,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:21,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 245 transitions, 3021 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:21,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:21,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:21,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:22,030 INFO L124 PetriNetUnfolderBase]: 636/1140 cut-off events. [2024-06-21 19:17:22,030 INFO L125 PetriNetUnfolderBase]: For 80922/80922 co-relation queries the response was YES. [2024-06-21 19:17:22,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7972 conditions, 1140 events. 636/1140 cut-off events. For 80922/80922 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6055 event pairs, 78 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7845. Up to 976 conditions per place. [2024-06-21 19:17:22,041 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 193 selfloop transitions, 68 changer transitions 0/263 dead transitions. [2024-06-21 19:17:22,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3605 flow [2024-06-21 19:17:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 19:17:22,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-21 19:17:22,042 INFO L175 Difference]: Start difference. First operand has 276 places, 245 transitions, 3021 flow. Second operand 9 states and 122 transitions. [2024-06-21 19:17:22,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3605 flow [2024-06-21 19:17:22,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 263 transitions, 3315 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:22,300 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 2886 flow [2024-06-21 19:17:22,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-21 19:17:22,301 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-21 19:17:22,301 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 2886 flow [2024-06-21 19:17:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:22,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:22,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:22,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 19:17:22,302 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:22,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1381799614, now seen corresponding path program 21 times [2024-06-21 19:17:22,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:22,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492098970] [2024-06-21 19:17:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:23,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492098970] [2024-06-21 19:17:23,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492098970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:23,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:23,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:23,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877094513] [2024-06-21 19:17:23,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:23,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:23,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:23,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:23,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:23,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:23,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:23,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:24,227 INFO L124 PetriNetUnfolderBase]: 642/1152 cut-off events. [2024-06-21 19:17:24,228 INFO L125 PetriNetUnfolderBase]: For 80516/80516 co-relation queries the response was YES. [2024-06-21 19:17:24,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1152 events. 642/1152 cut-off events. For 80516/80516 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6147 event pairs, 75 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 7718. Up to 908 conditions per place. [2024-06-21 19:17:24,237 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 184 selfloop transitions, 79 changer transitions 0/265 dead transitions. [2024-06-21 19:17:24,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 265 transitions, 3509 flow [2024-06-21 19:17:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-21 19:17:24,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-21 19:17:24,238 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 2886 flow. Second operand 9 states and 124 transitions. [2024-06-21 19:17:24,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 265 transitions, 3509 flow [2024-06-21 19:17:24,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 265 transitions, 3367 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:24,470 INFO L231 Difference]: Finished difference. Result has 278 places, 248 transitions, 2950 flow [2024-06-21 19:17:24,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2950, PETRI_PLACES=278, PETRI_TRANSITIONS=248} [2024-06-21 19:17:24,470 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 249 predicate places. [2024-06-21 19:17:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 248 transitions, 2950 flow [2024-06-21 19:17:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:24,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:24,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 19:17:24,471 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:24,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1381793879, now seen corresponding path program 21 times [2024-06-21 19:17:24,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:24,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923015419] [2024-06-21 19:17:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:24,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:25,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:25,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923015419] [2024-06-21 19:17:25,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923015419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:25,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:25,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:25,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498254168] [2024-06-21 19:17:25,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:25,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:25,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:25,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:25,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:25,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:25,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 248 transitions, 2950 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:25,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:25,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:25,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:26,212 INFO L124 PetriNetUnfolderBase]: 646/1160 cut-off events. [2024-06-21 19:17:26,213 INFO L125 PetriNetUnfolderBase]: For 80723/80723 co-relation queries the response was YES. [2024-06-21 19:17:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 1160 events. 646/1160 cut-off events. For 80723/80723 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6199 event pairs, 100 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 7809. Up to 1035 conditions per place. [2024-06-21 19:17:26,224 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 210 selfloop transitions, 51 changer transitions 0/263 dead transitions. [2024-06-21 19:17:26,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 263 transitions, 3524 flow [2024-06-21 19:17:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-21 19:17:26,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-21 19:17:26,225 INFO L175 Difference]: Start difference. First operand has 278 places, 248 transitions, 2950 flow. Second operand 8 states and 110 transitions. [2024-06-21 19:17:26,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 263 transitions, 3524 flow [2024-06-21 19:17:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3350 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:26,477 INFO L231 Difference]: Finished difference. Result has 279 places, 249 transitions, 2899 flow [2024-06-21 19:17:26,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2899, PETRI_PLACES=279, PETRI_TRANSITIONS=249} [2024-06-21 19:17:26,478 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-21 19:17:26,478 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 249 transitions, 2899 flow [2024-06-21 19:17:26,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:26,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:26,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:26,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 19:17:26,479 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:26,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1387371740, now seen corresponding path program 6 times [2024-06-21 19:17:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:26,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526408259] [2024-06-21 19:17:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526408259] [2024-06-21 19:17:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526408259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:17:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637038703] [2024-06-21 19:17:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:28,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:17:28,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:28,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:17:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:17:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:28,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 249 transitions, 2899 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:28,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:28,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:28,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:29,067 INFO L124 PetriNetUnfolderBase]: 647/1161 cut-off events. [2024-06-21 19:17:29,067 INFO L125 PetriNetUnfolderBase]: For 82361/82361 co-relation queries the response was YES. [2024-06-21 19:17:29,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 1161 events. 647/1161 cut-off events. For 82361/82361 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6206 event pairs, 63 based on Foata normal form. 4/1164 useless extension candidates. Maximal degree in co-relation 7548. Up to 923 conditions per place. [2024-06-21 19:17:29,078 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 201 selfloop transitions, 63 changer transitions 0/266 dead transitions. [2024-06-21 19:17:29,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 266 transitions, 3487 flow [2024-06-21 19:17:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 19:17:29,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-21 19:17:29,079 INFO L175 Difference]: Start difference. First operand has 279 places, 249 transitions, 2899 flow. Second operand 10 states and 126 transitions. [2024-06-21 19:17:29,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 266 transitions, 3487 flow [2024-06-21 19:17:29,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 266 transitions, 3377 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:29,325 INFO L231 Difference]: Finished difference. Result has 282 places, 250 transitions, 2932 flow [2024-06-21 19:17:29,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2932, PETRI_PLACES=282, PETRI_TRANSITIONS=250} [2024-06-21 19:17:29,325 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2024-06-21 19:17:29,326 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 250 transitions, 2932 flow [2024-06-21 19:17:29,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:29,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:29,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:29,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 19:17:29,326 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:29,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:29,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1817507404, now seen corresponding path program 22 times [2024-06-21 19:17:29,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:29,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426290561] [2024-06-21 19:17:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:29,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:29,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:30,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:30,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426290561] [2024-06-21 19:17:30,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426290561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:30,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:30,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:30,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601864592] [2024-06-21 19:17:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:30,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:30,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 250 transitions, 2932 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:30,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:30,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:30,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:31,488 INFO L124 PetriNetUnfolderBase]: 653/1170 cut-off events. [2024-06-21 19:17:31,488 INFO L125 PetriNetUnfolderBase]: For 75049/75049 co-relation queries the response was YES. [2024-06-21 19:17:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 1170 events. 653/1170 cut-off events. For 75049/75049 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6274 event pairs, 56 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 7675. Up to 929 conditions per place. [2024-06-21 19:17:31,499 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 195 selfloop transitions, 73 changer transitions 0/270 dead transitions. [2024-06-21 19:17:31,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 270 transitions, 3568 flow [2024-06-21 19:17:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:17:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:17:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 19:17:31,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-21 19:17:31,500 INFO L175 Difference]: Start difference. First operand has 282 places, 250 transitions, 2932 flow. Second operand 12 states and 152 transitions. [2024-06-21 19:17:31,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 270 transitions, 3568 flow [2024-06-21 19:17:31,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 270 transitions, 3390 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:31,723 INFO L231 Difference]: Finished difference. Result has 285 places, 252 transitions, 2952 flow [2024-06-21 19:17:31,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2754, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2952, PETRI_PLACES=285, PETRI_TRANSITIONS=252} [2024-06-21 19:17:31,724 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-21 19:17:31,724 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 252 transitions, 2952 flow [2024-06-21 19:17:31,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:31,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:31,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:31,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 19:17:31,725 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:31,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:31,725 INFO L85 PathProgramCache]: Analyzing trace with hash -2047146834, now seen corresponding path program 23 times [2024-06-21 19:17:31,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:31,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377753446] [2024-06-21 19:17:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377753446] [2024-06-21 19:17:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377753446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:33,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889966299] [2024-06-21 19:17:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:33,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:33,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 252 transitions, 2952 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:33,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:33,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:33,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:33,812 INFO L124 PetriNetUnfolderBase]: 659/1180 cut-off events. [2024-06-21 19:17:33,812 INFO L125 PetriNetUnfolderBase]: For 76468/76468 co-relation queries the response was YES. [2024-06-21 19:17:33,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 1180 events. 659/1180 cut-off events. For 76468/76468 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6326 event pairs, 57 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 7725. Up to 939 conditions per place. [2024-06-21 19:17:33,823 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 197 selfloop transitions, 71 changer transitions 0/270 dead transitions. [2024-06-21 19:17:33,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 270 transitions, 3588 flow [2024-06-21 19:17:33,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 19:17:33,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-21 19:17:33,825 INFO L175 Difference]: Start difference. First operand has 285 places, 252 transitions, 2952 flow. Second operand 10 states and 133 transitions. [2024-06-21 19:17:33,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 270 transitions, 3588 flow [2024-06-21 19:17:34,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 270 transitions, 3422 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:34,064 INFO L231 Difference]: Finished difference. Result has 285 places, 254 transitions, 2984 flow [2024-06-21 19:17:34,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2984, PETRI_PLACES=285, PETRI_TRANSITIONS=254} [2024-06-21 19:17:34,065 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-21 19:17:34,065 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 254 transitions, 2984 flow [2024-06-21 19:17:34,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:34,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:34,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 19:17:34,066 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:34,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash -281237183, now seen corresponding path program 22 times [2024-06-21 19:17:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:34,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420339374] [2024-06-21 19:17:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420339374] [2024-06-21 19:17:35,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420339374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:35,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:35,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915649113] [2024-06-21 19:17:35,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:35,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:35,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 254 transitions, 2984 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:35,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:35,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:35,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:36,005 INFO L124 PetriNetUnfolderBase]: 656/1175 cut-off events. [2024-06-21 19:17:36,006 INFO L125 PetriNetUnfolderBase]: For 70258/70258 co-relation queries the response was YES. [2024-06-21 19:17:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7654 conditions, 1175 events. 656/1175 cut-off events. For 70258/70258 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6306 event pairs, 81 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 7525. Up to 1053 conditions per place. [2024-06-21 19:17:36,017 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 217 selfloop transitions, 47 changer transitions 0/266 dead transitions. [2024-06-21 19:17:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 266 transitions, 3540 flow [2024-06-21 19:17:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 19:17:36,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:17:36,018 INFO L175 Difference]: Start difference. First operand has 285 places, 254 transitions, 2984 flow. Second operand 9 states and 117 transitions. [2024-06-21 19:17:36,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 266 transitions, 3540 flow [2024-06-21 19:17:36,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 266 transitions, 3368 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:36,264 INFO L231 Difference]: Finished difference. Result has 286 places, 254 transitions, 2912 flow [2024-06-21 19:17:36,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2912, PETRI_PLACES=286, PETRI_TRANSITIONS=254} [2024-06-21 19:17:36,265 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 257 predicate places. [2024-06-21 19:17:36,265 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 254 transitions, 2912 flow [2024-06-21 19:17:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:36,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:36,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 19:17:36,266 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:36,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -281237028, now seen corresponding path program 24 times [2024-06-21 19:17:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:36,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175501770] [2024-06-21 19:17:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175501770] [2024-06-21 19:17:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175501770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336325494] [2024-06-21 19:17:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:37,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:37,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 254 transitions, 2912 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:37,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:37,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:38,305 INFO L124 PetriNetUnfolderBase]: 662/1185 cut-off events. [2024-06-21 19:17:38,305 INFO L125 PetriNetUnfolderBase]: For 71621/71621 co-relation queries the response was YES. [2024-06-21 19:17:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7647 conditions, 1185 events. 662/1185 cut-off events. For 71621/71621 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6354 event pairs, 57 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 7518. Up to 901 conditions per place. [2024-06-21 19:17:38,316 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 186 selfloop transitions, 84 changer transitions 0/272 dead transitions. [2024-06-21 19:17:38,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 272 transitions, 3556 flow [2024-06-21 19:17:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:17:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:17:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 19:17:38,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-21 19:17:38,317 INFO L175 Difference]: Start difference. First operand has 286 places, 254 transitions, 2912 flow. Second operand 9 states and 128 transitions. [2024-06-21 19:17:38,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 272 transitions, 3556 flow [2024-06-21 19:17:38,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 272 transitions, 3369 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 19:17:38,550 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 2953 flow [2024-06-21 19:17:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2953, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-06-21 19:17:38,550 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-21 19:17:38,550 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 2953 flow [2024-06-21 19:17:38,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:38,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:38,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 19:17:38,551 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:38,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1631144704, now seen corresponding path program 25 times [2024-06-21 19:17:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164893977] [2024-06-21 19:17:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:39,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:39,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164893977] [2024-06-21 19:17:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164893977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:17:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612855117] [2024-06-21 19:17:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:39,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:17:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:17:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:17:39,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:17:39,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 2953 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:39,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:39,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:17:39,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:40,386 INFO L124 PetriNetUnfolderBase]: 658/1182 cut-off events. [2024-06-21 19:17:40,386 INFO L125 PetriNetUnfolderBase]: For 63689/63689 co-relation queries the response was YES. [2024-06-21 19:17:40,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7454 conditions, 1182 events. 658/1182 cut-off events. For 63689/63689 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6371 event pairs, 73 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 7325. Up to 911 conditions per place. [2024-06-21 19:17:40,398 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 183 selfloop transitions, 89 changer transitions 0/274 dead transitions. [2024-06-21 19:17:40,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 274 transitions, 3564 flow [2024-06-21 19:17:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:17:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:17:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-21 19:17:40,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-21 19:17:40,399 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 2953 flow. Second operand 8 states and 121 transitions. [2024-06-21 19:17:40,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 274 transitions, 3564 flow [2024-06-21 19:17:40,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 274 transitions, 3363 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:40,611 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 2938 flow [2024-06-21 19:17:40,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2938, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-06-21 19:17:40,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-21 19:17:40,611 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 2938 flow [2024-06-21 19:17:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:40,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:40,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:40,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 19:17:40,612 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash 824058064, now seen corresponding path program 1 times [2024-06-21 19:17:40,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503794288] [2024-06-21 19:17:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:42,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:42,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503794288] [2024-06-21 19:17:42,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503794288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:42,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:42,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:42,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257636834] [2024-06-21 19:17:42,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:42,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:42,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:42,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:42,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:42,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 2938 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:42,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:42,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:42,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:42,762 INFO L124 PetriNetUnfolderBase]: 699/1266 cut-off events. [2024-06-21 19:17:42,762 INFO L125 PetriNetUnfolderBase]: For 127384/127384 co-relation queries the response was YES. [2024-06-21 19:17:42,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 1266 events. 699/1266 cut-off events. For 127384/127384 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6889 event pairs, 173 based on Foata normal form. 8/1273 useless extension candidates. Maximal degree in co-relation 8472. Up to 780 conditions per place. [2024-06-21 19:17:42,774 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 205 selfloop transitions, 61 changer transitions 13/281 dead transitions. [2024-06-21 19:17:42,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 281 transitions, 3780 flow [2024-06-21 19:17:42,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:17:42,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:17:42,775 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 2938 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:17:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 281 transitions, 3780 flow [2024-06-21 19:17:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 281 transitions, 3563 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:43,107 INFO L231 Difference]: Finished difference. Result has 288 places, 253 transitions, 2824 flow [2024-06-21 19:17:43,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=288, PETRI_TRANSITIONS=253} [2024-06-21 19:17:43,107 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 259 predicate places. [2024-06-21 19:17:43,107 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 253 transitions, 2824 flow [2024-06-21 19:17:43,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:43,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:43,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 19:17:43,108 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:43,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 882270484, now seen corresponding path program 2 times [2024-06-21 19:17:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:43,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683490842] [2024-06-21 19:17:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:44,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683490842] [2024-06-21 19:17:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683490842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452796108] [2024-06-21 19:17:44,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:44,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:44,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:44,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:44,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:44,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:44,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 253 transitions, 2824 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:44,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:44,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:44,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:45,147 INFO L124 PetriNetUnfolderBase]: 691/1254 cut-off events. [2024-06-21 19:17:45,147 INFO L125 PetriNetUnfolderBase]: For 134932/134932 co-relation queries the response was YES. [2024-06-21 19:17:45,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8410 conditions, 1254 events. 691/1254 cut-off events. For 134932/134932 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6793 event pairs, 183 based on Foata normal form. 10/1263 useless extension candidates. Maximal degree in co-relation 8280. Up to 1039 conditions per place. [2024-06-21 19:17:45,160 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 200 selfloop transitions, 64 changer transitions 5/271 dead transitions. [2024-06-21 19:17:45,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 271 transitions, 3436 flow [2024-06-21 19:17:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 19:17:45,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-21 19:17:45,161 INFO L175 Difference]: Start difference. First operand has 288 places, 253 transitions, 2824 flow. Second operand 10 states and 124 transitions. [2024-06-21 19:17:45,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 271 transitions, 3436 flow [2024-06-21 19:17:45,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 3339 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 19:17:45,430 INFO L231 Difference]: Finished difference. Result has 287 places, 253 transitions, 2859 flow [2024-06-21 19:17:45,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2859, PETRI_PLACES=287, PETRI_TRANSITIONS=253} [2024-06-21 19:17:45,430 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2024-06-21 19:17:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 253 transitions, 2859 flow [2024-06-21 19:17:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:45,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:45,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:45,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 19:17:45,431 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:45,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 882265834, now seen corresponding path program 3 times [2024-06-21 19:17:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012038425] [2024-06-21 19:17:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:47,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:47,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012038425] [2024-06-21 19:17:47,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012038425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:47,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:47,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848032391] [2024-06-21 19:17:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:47,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:47,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:47,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 253 transitions, 2859 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:47,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:47,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:47,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:47,920 INFO L124 PetriNetUnfolderBase]: 712/1305 cut-off events. [2024-06-21 19:17:47,921 INFO L125 PetriNetUnfolderBase]: For 150522/150522 co-relation queries the response was YES. [2024-06-21 19:17:47,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9299 conditions, 1305 events. 712/1305 cut-off events. For 150522/150522 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7148 event pairs, 173 based on Foata normal form. 8/1312 useless extension candidates. Maximal degree in co-relation 9169. Up to 889 conditions per place. [2024-06-21 19:17:47,934 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 181 selfloop transitions, 85 changer transitions 8/276 dead transitions. [2024-06-21 19:17:47,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 276 transitions, 3871 flow [2024-06-21 19:17:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:17:47,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-21 19:17:47,935 INFO L175 Difference]: Start difference. First operand has 287 places, 253 transitions, 2859 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:17:47,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 276 transitions, 3871 flow [2024-06-21 19:17:48,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 276 transitions, 3741 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 19:17:48,311 INFO L231 Difference]: Finished difference. Result has 290 places, 251 transitions, 2883 flow [2024-06-21 19:17:48,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2883, PETRI_PLACES=290, PETRI_TRANSITIONS=251} [2024-06-21 19:17:48,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2024-06-21 19:17:48,311 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 251 transitions, 2883 flow [2024-06-21 19:17:48,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:48,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:48,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 19:17:48,312 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:48,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 882150514, now seen corresponding path program 4 times [2024-06-21 19:17:48,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:48,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665744641] [2024-06-21 19:17:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:49,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:49,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665744641] [2024-06-21 19:17:49,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665744641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:49,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:49,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:49,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686229943] [2024-06-21 19:17:49,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:49,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:49,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:49,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:49,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:50,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:50,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 251 transitions, 2883 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:50,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:50,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:50,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:50,466 INFO L124 PetriNetUnfolderBase]: 706/1295 cut-off events. [2024-06-21 19:17:50,466 INFO L125 PetriNetUnfolderBase]: For 153969/153969 co-relation queries the response was YES. [2024-06-21 19:17:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9355 conditions, 1295 events. 706/1295 cut-off events. For 153969/153969 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7077 event pairs, 194 based on Foata normal form. 8/1302 useless extension candidates. Maximal degree in co-relation 9224. Up to 1007 conditions per place. [2024-06-21 19:17:50,479 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 201 selfloop transitions, 59 changer transitions 11/273 dead transitions. [2024-06-21 19:17:50,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 273 transitions, 3703 flow [2024-06-21 19:17:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:17:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:17:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:17:50,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-21 19:17:50,480 INFO L175 Difference]: Start difference. First operand has 290 places, 251 transitions, 2883 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:17:50,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 273 transitions, 3703 flow [2024-06-21 19:17:50,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 273 transitions, 3525 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:50,850 INFO L231 Difference]: Finished difference. Result has 289 places, 248 transitions, 2796 flow [2024-06-21 19:17:50,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=289, PETRI_TRANSITIONS=248} [2024-06-21 19:17:50,850 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-21 19:17:50,850 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 248 transitions, 2796 flow [2024-06-21 19:17:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:50,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:50,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 19:17:50,851 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:50,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -720609072, now seen corresponding path program 5 times [2024-06-21 19:17:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836810605] [2024-06-21 19:17:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836810605] [2024-06-21 19:17:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836810605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:52,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435631144] [2024-06-21 19:17:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:52,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:52,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:52,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 248 transitions, 2796 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:52,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:52,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:52,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:53,152 INFO L124 PetriNetUnfolderBase]: 700/1285 cut-off events. [2024-06-21 19:17:53,152 INFO L125 PetriNetUnfolderBase]: For 162368/162368 co-relation queries the response was YES. [2024-06-21 19:17:53,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9215 conditions, 1285 events. 700/1285 cut-off events. For 162368/162368 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6992 event pairs, 175 based on Foata normal form. 10/1294 useless extension candidates. Maximal degree in co-relation 9084. Up to 1082 conditions per place. [2024-06-21 19:17:53,165 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 44 changer transitions 11/266 dead transitions. [2024-06-21 19:17:53,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 266 transitions, 3408 flow [2024-06-21 19:17:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 19:17:53,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-21 19:17:53,166 INFO L175 Difference]: Start difference. First operand has 289 places, 248 transitions, 2796 flow. Second operand 11 states and 128 transitions. [2024-06-21 19:17:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 266 transitions, 3408 flow [2024-06-21 19:17:53,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 266 transitions, 3285 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:17:53,496 INFO L231 Difference]: Finished difference. Result has 289 places, 245 transitions, 2735 flow [2024-06-21 19:17:53,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2673, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2735, PETRI_PLACES=289, PETRI_TRANSITIONS=245} [2024-06-21 19:17:53,497 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-21 19:17:53,497 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 245 transitions, 2735 flow [2024-06-21 19:17:53,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:53,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:53,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:53,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 19:17:53,498 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:53,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -720786702, now seen corresponding path program 6 times [2024-06-21 19:17:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:53,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781062726] [2024-06-21 19:17:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781062726] [2024-06-21 19:17:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781062726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:55,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:55,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:55,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408661422] [2024-06-21 19:17:55,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:55,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:55,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:55,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:55,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:55,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 245 transitions, 2735 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:55,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:55,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:55,612 INFO L124 PetriNetUnfolderBase]: 715/1322 cut-off events. [2024-06-21 19:17:55,612 INFO L125 PetriNetUnfolderBase]: For 194535/194535 co-relation queries the response was YES. [2024-06-21 19:17:55,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10176 conditions, 1322 events. 715/1322 cut-off events. For 194535/194535 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7306 event pairs, 185 based on Foata normal form. 8/1329 useless extension candidates. Maximal degree in co-relation 10045. Up to 1048 conditions per place. [2024-06-21 19:17:55,626 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 210 selfloop transitions, 49 changer transitions 7/268 dead transitions. [2024-06-21 19:17:55,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 268 transitions, 3563 flow [2024-06-21 19:17:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 19:17:55,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-21 19:17:55,627 INFO L175 Difference]: Start difference. First operand has 289 places, 245 transitions, 2735 flow. Second operand 11 states and 134 transitions. [2024-06-21 19:17:55,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 268 transitions, 3563 flow [2024-06-21 19:17:56,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 268 transitions, 3471 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:56,124 INFO L231 Difference]: Finished difference. Result has 289 places, 243 transitions, 2724 flow [2024-06-21 19:17:56,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2724, PETRI_PLACES=289, PETRI_TRANSITIONS=243} [2024-06-21 19:17:56,126 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-21 19:17:56,126 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 243 transitions, 2724 flow [2024-06-21 19:17:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:56,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:56,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:56,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 19:17:56,126 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:56,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:56,127 INFO L85 PathProgramCache]: Analyzing trace with hash -720782052, now seen corresponding path program 7 times [2024-06-21 19:17:56,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:56,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138380917] [2024-06-21 19:17:56,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:17:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:17:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:17:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138380917] [2024-06-21 19:17:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138380917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:17:57,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:17:57,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:17:57,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935386999] [2024-06-21 19:17:57,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:17:57,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:17:57,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:17:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:17:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:17:57,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:17:57,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 243 transitions, 2724 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:57,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:17:57,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:17:57,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:17:58,476 INFO L124 PetriNetUnfolderBase]: 684/1261 cut-off events. [2024-06-21 19:17:58,476 INFO L125 PetriNetUnfolderBase]: For 162060/162060 co-relation queries the response was YES. [2024-06-21 19:17:58,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 1261 events. 684/1261 cut-off events. For 162060/162060 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6892 event pairs, 198 based on Foata normal form. 10/1270 useless extension candidates. Maximal degree in co-relation 8931. Up to 1128 conditions per place. [2024-06-21 19:17:58,489 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 34 changer transitions 13/259 dead transitions. [2024-06-21 19:17:58,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 259 transitions, 3306 flow [2024-06-21 19:17:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:17:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:17:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 19:17:58,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 19:17:58,490 INFO L175 Difference]: Start difference. First operand has 289 places, 243 transitions, 2724 flow. Second operand 11 states and 126 transitions. [2024-06-21 19:17:58,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 259 transitions, 3306 flow [2024-06-21 19:17:58,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 259 transitions, 3206 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:17:58,830 INFO L231 Difference]: Finished difference. Result has 289 places, 239 transitions, 2643 flow [2024-06-21 19:17:58,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2624, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2643, PETRI_PLACES=289, PETRI_TRANSITIONS=239} [2024-06-21 19:17:58,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 260 predicate places. [2024-06-21 19:17:58,831 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 239 transitions, 2643 flow [2024-06-21 19:17:58,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:17:58,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:17:58,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:17:58,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 19:17:58,832 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:17:58,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:17:58,832 INFO L85 PathProgramCache]: Analyzing trace with hash -725250702, now seen corresponding path program 8 times [2024-06-21 19:17:58,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:17:58,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676741104] [2024-06-21 19:17:58,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:17:58,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:17:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:00,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676741104] [2024-06-21 19:18:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676741104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896504481] [2024-06-21 19:18:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:00,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:00,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:00,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 239 transitions, 2643 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) [2024-06-21 19:18:00,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:00,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:01,084 INFO L124 PetriNetUnfolderBase]: 675/1246 cut-off events. [2024-06-21 19:18:01,084 INFO L125 PetriNetUnfolderBase]: For 161924/161924 co-relation queries the response was YES. [2024-06-21 19:18:01,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1246 events. 675/1246 cut-off events. For 161924/161924 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6784 event pairs, 197 based on Foata normal form. 10/1255 useless extension candidates. Maximal degree in co-relation 8777. Up to 1119 conditions per place. [2024-06-21 19:18:01,095 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 210 selfloop transitions, 32 changer transitions 11/255 dead transitions. [2024-06-21 19:18:01,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 255 transitions, 3217 flow [2024-06-21 19:18:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 19:18:01,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-21 19:18:01,097 INFO L175 Difference]: Start difference. First operand has 289 places, 239 transitions, 2643 flow. Second operand 11 states and 125 transitions. [2024-06-21 19:18:01,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 255 transitions, 3217 flow [2024-06-21 19:18:01,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 255 transitions, 3072 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:01,447 INFO L231 Difference]: Finished difference. Result has 284 places, 236 transitions, 2533 flow [2024-06-21 19:18:01,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2533, PETRI_PLACES=284, PETRI_TRANSITIONS=236} [2024-06-21 19:18:01,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 255 predicate places. [2024-06-21 19:18:01,447 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 236 transitions, 2533 flow [2024-06-21 19:18:01,448 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) [2024-06-21 19:18:01,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:01,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:01,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 19:18:01,448 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:01,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -725255352, now seen corresponding path program 9 times [2024-06-21 19:18:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983970119] [2024-06-21 19:18:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:03,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:03,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983970119] [2024-06-21 19:18:03,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983970119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:03,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:03,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743332858] [2024-06-21 19:18:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:03,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:03,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 236 transitions, 2533 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:03,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:03,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:03,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:03,608 INFO L124 PetriNetUnfolderBase]: 663/1226 cut-off events. [2024-06-21 19:18:03,609 INFO L125 PetriNetUnfolderBase]: For 150052/150052 co-relation queries the response was YES. [2024-06-21 19:18:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8634 conditions, 1226 events. 663/1226 cut-off events. For 150052/150052 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6658 event pairs, 193 based on Foata normal form. 8/1233 useless extension candidates. Maximal degree in co-relation 8505. Up to 1109 conditions per place. [2024-06-21 19:18:03,620 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 208 selfloop transitions, 30 changer transitions 11/251 dead transitions. [2024-06-21 19:18:03,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 251 transitions, 3085 flow [2024-06-21 19:18:03,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:18:03,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-21 19:18:03,621 INFO L175 Difference]: Start difference. First operand has 284 places, 236 transitions, 2533 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:18:03,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 251 transitions, 3085 flow [2024-06-21 19:18:03,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 3009 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:03,972 INFO L231 Difference]: Finished difference. Result has 281 places, 233 transitions, 2489 flow [2024-06-21 19:18:03,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2489, PETRI_PLACES=281, PETRI_TRANSITIONS=233} [2024-06-21 19:18:03,972 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 252 predicate places. [2024-06-21 19:18:03,972 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 233 transitions, 2489 flow [2024-06-21 19:18:03,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:03,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:03,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 19:18:03,973 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:03,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash -725370672, now seen corresponding path program 10 times [2024-06-21 19:18:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:03,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352503949] [2024-06-21 19:18:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:03,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352503949] [2024-06-21 19:18:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352503949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:05,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356014523] [2024-06-21 19:18:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:05,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:05,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 233 transitions, 2489 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:05,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:05,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:05,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:06,140 INFO L124 PetriNetUnfolderBase]: 656/1213 cut-off events. [2024-06-21 19:18:06,141 INFO L125 PetriNetUnfolderBase]: For 146729/146729 co-relation queries the response was YES. [2024-06-21 19:18:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 1213 events. 656/1213 cut-off events. For 146729/146729 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6569 event pairs, 169 based on Foata normal form. 8/1220 useless extension candidates. Maximal degree in co-relation 8400. Up to 1011 conditions per place. [2024-06-21 19:18:06,153 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 195 selfloop transitions, 40 changer transitions 14/251 dead transitions. [2024-06-21 19:18:06,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 251 transitions, 3059 flow [2024-06-21 19:18:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 19:18:06,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-21 19:18:06,154 INFO L175 Difference]: Start difference. First operand has 281 places, 233 transitions, 2489 flow. Second operand 11 states and 125 transitions. [2024-06-21 19:18:06,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 251 transitions, 3059 flow [2024-06-21 19:18:06,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 251 transitions, 2991 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:06,456 INFO L231 Difference]: Finished difference. Result has 280 places, 229 transitions, 2452 flow [2024-06-21 19:18:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2452, PETRI_PLACES=280, PETRI_TRANSITIONS=229} [2024-06-21 19:18:06,457 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2024-06-21 19:18:06,457 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 229 transitions, 2452 flow [2024-06-21 19:18:06,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:06,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:06,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 19:18:06,457 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:06,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1599705998, now seen corresponding path program 11 times [2024-06-21 19:18:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706600789] [2024-06-21 19:18:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:06,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:08,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706600789] [2024-06-21 19:18:08,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706600789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:08,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:08,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:08,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794095847] [2024-06-21 19:18:08,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:08,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:08,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 229 transitions, 2452 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:08,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:08,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:08,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:08,687 INFO L124 PetriNetUnfolderBase]: 696/1297 cut-off events. [2024-06-21 19:18:08,687 INFO L125 PetriNetUnfolderBase]: For 217378/217378 co-relation queries the response was YES. [2024-06-21 19:18:08,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10398 conditions, 1297 events. 696/1297 cut-off events. For 217378/217378 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7111 event pairs, 198 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 10270. Up to 717 conditions per place. [2024-06-21 19:18:08,700 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 163 selfloop transitions, 81 changer transitions 11/257 dead transitions. [2024-06-21 19:18:08,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 257 transitions, 3448 flow [2024-06-21 19:18:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:18:08,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 19:18:08,701 INFO L175 Difference]: Start difference. First operand has 280 places, 229 transitions, 2452 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:18:08,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 257 transitions, 3448 flow [2024-06-21 19:18:09,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 257 transitions, 3317 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:09,107 INFO L231 Difference]: Finished difference. Result has 274 places, 226 transitions, 2456 flow [2024-06-21 19:18:09,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2456, PETRI_PLACES=274, PETRI_TRANSITIONS=226} [2024-06-21 19:18:09,107 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-21 19:18:09,108 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 226 transitions, 2456 flow [2024-06-21 19:18:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:09,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:09,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 19:18:09,108 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:09,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1599590678, now seen corresponding path program 12 times [2024-06-21 19:18:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457217645] [2024-06-21 19:18:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:10,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:10,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457217645] [2024-06-21 19:18:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457217645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:10,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:10,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258898780] [2024-06-21 19:18:10,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:10,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:10,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:10,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:10,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:10,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:10,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 226 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:10,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:10,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:10,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:11,361 INFO L124 PetriNetUnfolderBase]: 711/1328 cut-off events. [2024-06-21 19:18:11,362 INFO L125 PetriNetUnfolderBase]: For 256676/256676 co-relation queries the response was YES. [2024-06-21 19:18:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11398 conditions, 1328 events. 711/1328 cut-off events. For 256676/256676 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7392 event pairs, 237 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 11271. Up to 1093 conditions per place. [2024-06-21 19:18:11,374 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 191 selfloop transitions, 50 changer transitions 7/250 dead transitions. [2024-06-21 19:18:11,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 250 transitions, 3244 flow [2024-06-21 19:18:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:18:11,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:18:11,375 INFO L175 Difference]: Start difference. First operand has 274 places, 226 transitions, 2456 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:18:11,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 250 transitions, 3244 flow [2024-06-21 19:18:11,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 250 transitions, 3105 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:11,916 INFO L231 Difference]: Finished difference. Result has 271 places, 224 transitions, 2400 flow [2024-06-21 19:18:11,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2400, PETRI_PLACES=271, PETRI_TRANSITIONS=224} [2024-06-21 19:18:11,917 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-21 19:18:11,917 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 224 transitions, 2400 flow [2024-06-21 19:18:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:11,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:11,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 19:18:11,917 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:11,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 88836846, now seen corresponding path program 13 times [2024-06-21 19:18:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:11,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67893924] [2024-06-21 19:18:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:11,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:13,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67893924] [2024-06-21 19:18:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67893924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:13,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767523458] [2024-06-21 19:18:13,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:13,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:13,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 224 transitions, 2400 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:13,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:14,133 INFO L124 PetriNetUnfolderBase]: 680/1267 cut-off events. [2024-06-21 19:18:14,162 INFO L125 PetriNetUnfolderBase]: For 225370/225370 co-relation queries the response was YES. [2024-06-21 19:18:14,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 1267 events. 680/1267 cut-off events. For 225370/225370 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6933 event pairs, 206 based on Foata normal form. 10/1276 useless extension candidates. Maximal degree in co-relation 10149. Up to 953 conditions per place. [2024-06-21 19:18:14,172 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 153 selfloop transitions, 78 changer transitions 13/246 dead transitions. [2024-06-21 19:18:14,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 246 transitions, 3168 flow [2024-06-21 19:18:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:14,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-21 19:18:14,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-21 19:18:14,173 INFO L175 Difference]: Start difference. First operand has 271 places, 224 transitions, 2400 flow. Second operand 10 states and 127 transitions. [2024-06-21 19:18:14,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 246 transitions, 3168 flow [2024-06-21 19:18:14,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 246 transitions, 3086 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:18:14,598 INFO L231 Difference]: Finished difference. Result has 272 places, 220 transitions, 2432 flow [2024-06-21 19:18:14,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2432, PETRI_PLACES=272, PETRI_TRANSITIONS=220} [2024-06-21 19:18:14,599 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-21 19:18:14,599 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 220 transitions, 2432 flow [2024-06-21 19:18:14,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:14,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:14,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 19:18:14,600 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:14,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1594944398, now seen corresponding path program 14 times [2024-06-21 19:18:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627929907] [2024-06-21 19:18:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:16,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:16,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627929907] [2024-06-21 19:18:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627929907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:16,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718904012] [2024-06-21 19:18:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:16,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:16,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:16,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:16,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 220 transitions, 2432 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:16,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:16,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:16,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:16,825 INFO L124 PetriNetUnfolderBase]: 671/1252 cut-off events. [2024-06-21 19:18:16,826 INFO L125 PetriNetUnfolderBase]: For 225500/225500 co-relation queries the response was YES. [2024-06-21 19:18:16,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10282 conditions, 1252 events. 671/1252 cut-off events. For 225500/225500 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6883 event pairs, 208 based on Foata normal form. 10/1261 useless extension candidates. Maximal degree in co-relation 10156. Up to 1049 conditions per place. [2024-06-21 19:18:16,837 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 179 selfloop transitions, 48 changer transitions 11/240 dead transitions. [2024-06-21 19:18:16,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 240 transitions, 3004 flow [2024-06-21 19:18:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 19:18:16,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-21 19:18:16,839 INFO L175 Difference]: Start difference. First operand has 272 places, 220 transitions, 2432 flow. Second operand 11 states and 129 transitions. [2024-06-21 19:18:16,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 240 transitions, 3004 flow [2024-06-21 19:18:17,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 240 transitions, 2770 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:17,278 INFO L231 Difference]: Finished difference. Result has 269 places, 217 transitions, 2260 flow [2024-06-21 19:18:17,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2260, PETRI_PLACES=269, PETRI_TRANSITIONS=217} [2024-06-21 19:18:17,279 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-21 19:18:17,279 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 217 transitions, 2260 flow [2024-06-21 19:18:17,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:17,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:17,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:17,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 19:18:17,279 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:17,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:17,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1595122028, now seen corresponding path program 15 times [2024-06-21 19:18:17,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:17,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355880060] [2024-06-21 19:18:17,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:17,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355880060] [2024-06-21 19:18:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355880060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:18,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700243315] [2024-06-21 19:18:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:18,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:18,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:18,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 217 transitions, 2260 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:18,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:18,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:18,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:19,393 INFO L124 PetriNetUnfolderBase]: 686/1289 cut-off events. [2024-06-21 19:18:19,393 INFO L125 PetriNetUnfolderBase]: For 256407/256407 co-relation queries the response was YES. [2024-06-21 19:18:19,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 1289 events. 686/1289 cut-off events. For 256407/256407 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7166 event pairs, 218 based on Foata normal form. 8/1296 useless extension candidates. Maximal degree in co-relation 10947. Up to 1015 conditions per place. [2024-06-21 19:18:19,406 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 179 selfloop transitions, 54 changer transitions 7/242 dead transitions. [2024-06-21 19:18:19,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 242 transitions, 3044 flow [2024-06-21 19:18:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-21 19:18:19,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-21 19:18:19,407 INFO L175 Difference]: Start difference. First operand has 269 places, 217 transitions, 2260 flow. Second operand 11 states and 136 transitions. [2024-06-21 19:18:19,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 242 transitions, 3044 flow [2024-06-21 19:18:19,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 242 transitions, 2932 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:19,908 INFO L231 Difference]: Finished difference. Result has 267 places, 215 transitions, 2239 flow [2024-06-21 19:18:19,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=267, PETRI_TRANSITIONS=215} [2024-06-21 19:18:19,909 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 238 predicate places. [2024-06-21 19:18:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 215 transitions, 2239 flow [2024-06-21 19:18:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:19,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:19,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 19:18:19,910 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:19,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1428710618, now seen corresponding path program 16 times [2024-06-21 19:18:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924137977] [2024-06-21 19:18:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:21,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924137977] [2024-06-21 19:18:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924137977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:21,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430223588] [2024-06-21 19:18:21,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:21,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:21,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:21,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 215 transitions, 2239 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) [2024-06-21 19:18:21,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:21,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:22,450 INFO L124 PetriNetUnfolderBase]: 684/1287 cut-off events. [2024-06-21 19:18:22,451 INFO L125 PetriNetUnfolderBase]: For 258342/258342 co-relation queries the response was YES. [2024-06-21 19:18:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 1287 events. 684/1287 cut-off events. For 258342/258342 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7167 event pairs, 225 based on Foata normal form. 10/1296 useless extension candidates. Maximal degree in co-relation 10870. Up to 1084 conditions per place. [2024-06-21 19:18:22,463 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 183 selfloop transitions, 40 changer transitions 11/236 dead transitions. [2024-06-21 19:18:22,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 236 transitions, 2809 flow [2024-06-21 19:18:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 19:18:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-21 19:18:22,464 INFO L175 Difference]: Start difference. First operand has 267 places, 215 transitions, 2239 flow. Second operand 12 states and 138 transitions. [2024-06-21 19:18:22,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 236 transitions, 2809 flow [2024-06-21 19:18:22,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 236 transitions, 2699 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:22,966 INFO L231 Difference]: Finished difference. Result has 268 places, 212 transitions, 2175 flow [2024-06-21 19:18:22,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2175, PETRI_PLACES=268, PETRI_TRANSITIONS=212} [2024-06-21 19:18:22,967 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-21 19:18:22,967 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 212 transitions, 2175 flow [2024-06-21 19:18:22,967 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) [2024-06-21 19:18:22,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:22,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:22,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 19:18:22,967 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:22,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 694449080, now seen corresponding path program 17 times [2024-06-21 19:18:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879475018] [2024-06-21 19:18:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:24,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879475018] [2024-06-21 19:18:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879475018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:24,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:24,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284500218] [2024-06-21 19:18:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:24,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:24,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:24,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:24,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 212 transitions, 2175 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) [2024-06-21 19:18:24,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:24,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:24,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:25,153 INFO L124 PetriNetUnfolderBase]: 699/1324 cut-off events. [2024-06-21 19:18:25,153 INFO L125 PetriNetUnfolderBase]: For 289144/289144 co-relation queries the response was YES. [2024-06-21 19:18:25,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11912 conditions, 1324 events. 699/1324 cut-off events. For 289144/289144 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7451 event pairs, 253 based on Foata normal form. 8/1331 useless extension candidates. Maximal degree in co-relation 11787. Up to 1130 conditions per place. [2024-06-21 19:18:25,166 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 190 selfloop transitions, 35 changer transitions 7/234 dead transitions. [2024-06-21 19:18:25,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 234 transitions, 2915 flow [2024-06-21 19:18:25,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:25,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 19:18:25,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-21 19:18:25,167 INFO L175 Difference]: Start difference. First operand has 268 places, 212 transitions, 2175 flow. Second operand 11 states and 133 transitions. [2024-06-21 19:18:25,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 234 transitions, 2915 flow [2024-06-21 19:18:25,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 234 transitions, 2819 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:25,799 INFO L231 Difference]: Finished difference. Result has 265 places, 210 transitions, 2132 flow [2024-06-21 19:18:25,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2132, PETRI_PLACES=265, PETRI_TRANSITIONS=210} [2024-06-21 19:18:25,805 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-21 19:18:25,805 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 210 transitions, 2132 flow [2024-06-21 19:18:25,805 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) [2024-06-21 19:18:25,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:25,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:25,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 19:18:25,806 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:25,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash 528219950, now seen corresponding path program 18 times [2024-06-21 19:18:25,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:25,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010221378] [2024-06-21 19:18:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:25,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:27,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010221378] [2024-06-21 19:18:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010221378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513441317] [2024-06-21 19:18:27,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:27,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:27,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:27,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:27,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 210 transitions, 2132 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:27,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:27,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:27,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:27,908 INFO L124 PetriNetUnfolderBase]: 668/1263 cut-off events. [2024-06-21 19:18:27,908 INFO L125 PetriNetUnfolderBase]: For 252854/252854 co-relation queries the response was YES. [2024-06-21 19:18:27,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10724 conditions, 1263 events. 668/1263 cut-off events. For 252854/252854 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7035 event pairs, 221 based on Foata normal form. 10/1272 useless extension candidates. Maximal degree in co-relation 10600. Up to 1059 conditions per place. [2024-06-21 19:18:27,921 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 170 selfloop transitions, 45 changer transitions 13/230 dead transitions. [2024-06-21 19:18:27,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 230 transitions, 2684 flow [2024-06-21 19:18:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 19:18:27,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-21 19:18:27,922 INFO L175 Difference]: Start difference. First operand has 265 places, 210 transitions, 2132 flow. Second operand 11 states and 129 transitions. [2024-06-21 19:18:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 230 transitions, 2684 flow [2024-06-21 19:18:28,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 230 transitions, 2595 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:28,399 INFO L231 Difference]: Finished difference. Result has 264 places, 206 transitions, 2084 flow [2024-06-21 19:18:28,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2084, PETRI_PLACES=264, PETRI_TRANSITIONS=206} [2024-06-21 19:18:28,400 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-21 19:18:28,400 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 206 transitions, 2084 flow [2024-06-21 19:18:28,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:28,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:28,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:28,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 19:18:28,400 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:28,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1015563468, now seen corresponding path program 1 times [2024-06-21 19:18:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:28,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115137736] [2024-06-21 19:18:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:28,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:29,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115137736] [2024-06-21 19:18:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115137736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415166509] [2024-06-21 19:18:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:29,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:29,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:29,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:30,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:30,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 206 transitions, 2084 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:30,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:30,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:30,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:30,445 INFO L124 PetriNetUnfolderBase]: 647/1220 cut-off events. [2024-06-21 19:18:30,445 INFO L125 PetriNetUnfolderBase]: For 222928/222928 co-relation queries the response was YES. [2024-06-21 19:18:30,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10522 conditions, 1220 events. 647/1220 cut-off events. For 222928/222928 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6709 event pairs, 217 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 10399. Up to 1061 conditions per place. [2024-06-21 19:18:30,457 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 172 selfloop transitions, 47 changer transitions 0/221 dead transitions. [2024-06-21 19:18:30,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 221 transitions, 2586 flow [2024-06-21 19:18:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-21 19:18:30,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-21 19:18:30,458 INFO L175 Difference]: Start difference. First operand has 264 places, 206 transitions, 2084 flow. Second operand 10 states and 114 transitions. [2024-06-21 19:18:30,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 221 transitions, 2586 flow [2024-06-21 19:18:30,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 221 transitions, 2486 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:30,891 INFO L231 Difference]: Finished difference. Result has 260 places, 207 transitions, 2096 flow [2024-06-21 19:18:30,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2096, PETRI_PLACES=260, PETRI_TRANSITIONS=207} [2024-06-21 19:18:30,892 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-21 19:18:30,892 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 207 transitions, 2096 flow [2024-06-21 19:18:30,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:30,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:30,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:30,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 19:18:30,892 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:30,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash 694633654, now seen corresponding path program 2 times [2024-06-21 19:18:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:30,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203492939] [2024-06-21 19:18:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203492939] [2024-06-21 19:18:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203492939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:32,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:32,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499460568] [2024-06-21 19:18:32,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:32,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:32,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:32,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 207 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:32,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:32,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:32,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:33,252 INFO L124 PetriNetUnfolderBase]: 651/1228 cut-off events. [2024-06-21 19:18:33,252 INFO L125 PetriNetUnfolderBase]: For 223022/223022 co-relation queries the response was YES. [2024-06-21 19:18:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 1228 events. 651/1228 cut-off events. For 223022/223022 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6769 event pairs, 221 based on Foata normal form. 2/1229 useless extension candidates. Maximal degree in co-relation 10445. Up to 1069 conditions per place. [2024-06-21 19:18:33,264 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 181 selfloop transitions, 40 changer transitions 0/223 dead transitions. [2024-06-21 19:18:33,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 223 transitions, 2610 flow [2024-06-21 19:18:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:18:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:18:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 19:18:33,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-21 19:18:33,265 INFO L175 Difference]: Start difference. First operand has 260 places, 207 transitions, 2096 flow. Second operand 11 states and 124 transitions. [2024-06-21 19:18:33,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 223 transitions, 2610 flow [2024-06-21 19:18:33,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 223 transitions, 2508 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:33,735 INFO L231 Difference]: Finished difference. Result has 263 places, 208 transitions, 2094 flow [2024-06-21 19:18:33,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=263, PETRI_TRANSITIONS=208} [2024-06-21 19:18:33,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-21 19:18:33,744 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 208 transitions, 2094 flow [2024-06-21 19:18:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:33,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:33,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:33,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 19:18:33,745 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:33,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 694453730, now seen corresponding path program 19 times [2024-06-21 19:18:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:33,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049728748] [2024-06-21 19:18:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:35,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049728748] [2024-06-21 19:18:35,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049728748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:35,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:35,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527798240] [2024-06-21 19:18:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:35,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:35,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:35,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 208 transitions, 2094 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) [2024-06-21 19:18:35,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:35,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:35,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:36,003 INFO L124 PetriNetUnfolderBase]: 638/1205 cut-off events. [2024-06-21 19:18:36,003 INFO L125 PetriNetUnfolderBase]: For 220379/220379 co-relation queries the response was YES. [2024-06-21 19:18:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1205 events. 638/1205 cut-off events. For 220379/220379 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6611 event pairs, 206 based on Foata normal form. 10/1214 useless extension candidates. Maximal degree in co-relation 9525. Up to 993 conditions per place. [2024-06-21 19:18:36,014 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 39 changer transitions 12/229 dead transitions. [2024-06-21 19:18:36,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 229 transitions, 2650 flow [2024-06-21 19:18:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 19:18:36,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-21 19:18:36,016 INFO L175 Difference]: Start difference. First operand has 263 places, 208 transitions, 2094 flow. Second operand 12 states and 139 transitions. [2024-06-21 19:18:36,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 229 transitions, 2650 flow [2024-06-21 19:18:36,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 229 transitions, 2560 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:36,438 INFO L231 Difference]: Finished difference. Result has 266 places, 204 transitions, 2032 flow [2024-06-21 19:18:36,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2032, PETRI_PLACES=266, PETRI_TRANSITIONS=204} [2024-06-21 19:18:36,438 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-21 19:18:36,439 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 204 transitions, 2032 flow [2024-06-21 19:18:36,439 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) [2024-06-21 19:18:36,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:36,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 19:18:36,439 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:36,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash 701120404, now seen corresponding path program 3 times [2024-06-21 19:18:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653150030] [2024-06-21 19:18:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653150030] [2024-06-21 19:18:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653150030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:38,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:38,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581602243] [2024-06-21 19:18:38,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:38,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:38,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:38,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:38,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 204 transitions, 2032 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:38,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:38,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:38,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:38,849 INFO L124 PetriNetUnfolderBase]: 617/1162 cut-off events. [2024-06-21 19:18:38,849 INFO L125 PetriNetUnfolderBase]: For 193937/193937 co-relation queries the response was YES. [2024-06-21 19:18:38,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9483 conditions, 1162 events. 617/1162 cut-off events. For 193937/193937 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6286 event pairs, 204 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 9358. Up to 1003 conditions per place. [2024-06-21 19:18:38,860 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 180 selfloop transitions, 40 changer transitions 0/222 dead transitions. [2024-06-21 19:18:38,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 222 transitions, 2550 flow [2024-06-21 19:18:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 139 transitions. [2024-06-21 19:18:38,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3564102564102564 [2024-06-21 19:18:38,862 INFO L175 Difference]: Start difference. First operand has 266 places, 204 transitions, 2032 flow. Second operand 13 states and 139 transitions. [2024-06-21 19:18:38,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 222 transitions, 2550 flow [2024-06-21 19:18:39,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 222 transitions, 2462 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 19:18:39,305 INFO L231 Difference]: Finished difference. Result has 264 places, 205 transitions, 2046 flow [2024-06-21 19:18:39,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2046, PETRI_PLACES=264, PETRI_TRANSITIONS=205} [2024-06-21 19:18:39,328 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-21 19:18:39,328 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 205 transitions, 2046 flow [2024-06-21 19:18:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:39,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:39,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:39,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 19:18:39,329 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:39,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:39,329 INFO L85 PathProgramCache]: Analyzing trace with hash 701128774, now seen corresponding path program 4 times [2024-06-21 19:18:39,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:39,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917583308] [2024-06-21 19:18:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:39,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917583308] [2024-06-21 19:18:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917583308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:41,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:41,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497869855] [2024-06-21 19:18:41,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:41,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:41,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:41,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 205 transitions, 2046 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:41,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:41,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:41,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:41,884 INFO L124 PetriNetUnfolderBase]: 621/1170 cut-off events. [2024-06-21 19:18:41,884 INFO L125 PetriNetUnfolderBase]: For 194172/194172 co-relation queries the response was YES. [2024-06-21 19:18:41,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1170 events. 621/1170 cut-off events. For 194172/194172 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6371 event pairs, 200 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 9410. Up to 985 conditions per place. [2024-06-21 19:18:41,896 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 44 changer transitions 0/223 dead transitions. [2024-06-21 19:18:41,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 223 transitions, 2562 flow [2024-06-21 19:18:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-21 19:18:41,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-21 19:18:41,897 INFO L175 Difference]: Start difference. First operand has 264 places, 205 transitions, 2046 flow. Second operand 13 states and 140 transitions. [2024-06-21 19:18:41,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 223 transitions, 2562 flow [2024-06-21 19:18:42,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 223 transitions, 2470 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:42,358 INFO L231 Difference]: Finished difference. Result has 266 places, 206 transitions, 2066 flow [2024-06-21 19:18:42,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2066, PETRI_PLACES=266, PETRI_TRANSITIONS=206} [2024-06-21 19:18:42,358 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-21 19:18:42,359 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 206 transitions, 2066 flow [2024-06-21 19:18:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:42,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:42,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:42,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 19:18:42,359 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:42,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 700882820, now seen corresponding path program 20 times [2024-06-21 19:18:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578148506] [2024-06-21 19:18:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:44,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:44,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578148506] [2024-06-21 19:18:44,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578148506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:44,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029234759] [2024-06-21 19:18:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:44,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:44,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:44,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 206 transitions, 2066 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) [2024-06-21 19:18:44,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:44,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:44,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:44,859 INFO L124 PetriNetUnfolderBase]: 637/1206 cut-off events. [2024-06-21 19:18:44,859 INFO L125 PetriNetUnfolderBase]: For 230490/230490 co-relation queries the response was YES. [2024-06-21 19:18:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 1206 events. 637/1206 cut-off events. For 230490/230490 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6624 event pairs, 208 based on Foata normal form. 10/1215 useless extension candidates. Maximal degree in co-relation 9581. Up to 1003 conditions per place. [2024-06-21 19:18:44,871 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 178 selfloop transitions, 38 changer transitions 11/229 dead transitions. [2024-06-21 19:18:44,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 229 transitions, 2626 flow [2024-06-21 19:18:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:18:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:18:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 152 transitions. [2024-06-21 19:18:44,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-21 19:18:44,872 INFO L175 Difference]: Start difference. First operand has 266 places, 206 transitions, 2066 flow. Second operand 14 states and 152 transitions. [2024-06-21 19:18:44,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 229 transitions, 2626 flow [2024-06-21 19:18:45,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 229 transitions, 2524 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:45,455 INFO L231 Difference]: Finished difference. Result has 269 places, 203 transitions, 2006 flow [2024-06-21 19:18:45,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2006, PETRI_PLACES=269, PETRI_TRANSITIONS=203} [2024-06-21 19:18:45,455 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-21 19:18:45,456 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 203 transitions, 2006 flow [2024-06-21 19:18:45,456 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) [2024-06-21 19:18:45,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:45,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:45,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 19:18:45,456 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:45,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:45,457 INFO L85 PathProgramCache]: Analyzing trace with hash 146497252, now seen corresponding path program 5 times [2024-06-21 19:18:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884213750] [2024-06-21 19:18:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:47,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:47,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884213750] [2024-06-21 19:18:47,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884213750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:47,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:47,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:47,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613075144] [2024-06-21 19:18:47,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:47,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:47,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 203 transitions, 2006 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:47,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:47,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:47,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:47,597 INFO L124 PetriNetUnfolderBase]: 615/1164 cut-off events. [2024-06-21 19:18:47,598 INFO L125 PetriNetUnfolderBase]: For 203081/203081 co-relation queries the response was YES. [2024-06-21 19:18:47,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9533 conditions, 1164 events. 615/1164 cut-off events. For 203081/203081 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6326 event pairs, 211 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 9406. Up to 1095 conditions per place. [2024-06-21 19:18:47,609 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 189 selfloop transitions, 29 changer transitions 0/220 dead transitions. [2024-06-21 19:18:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 220 transitions, 2520 flow [2024-06-21 19:18:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-21 19:18:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35128205128205126 [2024-06-21 19:18:47,610 INFO L175 Difference]: Start difference. First operand has 269 places, 203 transitions, 2006 flow. Second operand 13 states and 137 transitions. [2024-06-21 19:18:47,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 220 transitions, 2520 flow [2024-06-21 19:18:48,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 220 transitions, 2432 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 19:18:48,198 INFO L231 Difference]: Finished difference. Result has 266 places, 204 transitions, 2002 flow [2024-06-21 19:18:48,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2002, PETRI_PLACES=266, PETRI_TRANSITIONS=204} [2024-06-21 19:18:48,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-21 19:18:48,199 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 204 transitions, 2002 flow [2024-06-21 19:18:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:48,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:48,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 19:18:48,199 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:48,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:48,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1334759354, now seen corresponding path program 6 times [2024-06-21 19:18:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:48,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567461814] [2024-06-21 19:18:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567461814] [2024-06-21 19:18:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567461814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233294233] [2024-06-21 19:18:49,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 204 transitions, 2002 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:49,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:50,488 INFO L124 PetriNetUnfolderBase]: 626/1185 cut-off events. [2024-06-21 19:18:50,488 INFO L125 PetriNetUnfolderBase]: For 206862/206862 co-relation queries the response was YES. [2024-06-21 19:18:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1185 events. 626/1185 cut-off events. For 206862/206862 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6494 event pairs, 210 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 9652. Up to 1093 conditions per place. [2024-06-21 19:18:50,499 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 189 selfloop transitions, 32 changer transitions 0/223 dead transitions. [2024-06-21 19:18:50,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 223 transitions, 2722 flow [2024-06-21 19:18:50,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:18:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:18:50,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-21 19:18:50,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-21 19:18:50,502 INFO L175 Difference]: Start difference. First operand has 266 places, 204 transitions, 2002 flow. Second operand 13 states and 138 transitions. [2024-06-21 19:18:50,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 223 transitions, 2722 flow [2024-06-21 19:18:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 223 transitions, 2648 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 19:18:51,054 INFO L231 Difference]: Finished difference. Result has 268 places, 206 transitions, 2042 flow [2024-06-21 19:18:51,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2042, PETRI_PLACES=268, PETRI_TRANSITIONS=206} [2024-06-21 19:18:51,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-21 19:18:51,054 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 206 transitions, 2042 flow [2024-06-21 19:18:51,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:51,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:51,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:51,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 19:18:51,055 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:51,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1045044318, now seen corresponding path program 7 times [2024-06-21 19:18:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113297806] [2024-06-21 19:18:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:52,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:52,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113297806] [2024-06-21 19:18:52,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113297806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:52,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:52,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:18:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247426959] [2024-06-21 19:18:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:18:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:18:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:18:52,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:52,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 206 transitions, 2042 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:52,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:52,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:52,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:53,121 INFO L124 PetriNetUnfolderBase]: 630/1193 cut-off events. [2024-06-21 19:18:53,121 INFO L125 PetriNetUnfolderBase]: For 211881/211881 co-relation queries the response was YES. [2024-06-21 19:18:53,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9878 conditions, 1193 events. 630/1193 cut-off events. For 211881/211881 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6561 event pairs, 214 based on Foata normal form. 2/1194 useless extension candidates. Maximal degree in co-relation 9751. Up to 1128 conditions per place. [2024-06-21 19:18:53,133 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 191 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2024-06-21 19:18:53,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 220 transitions, 2548 flow [2024-06-21 19:18:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:18:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:18:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 19:18:53,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-21 19:18:53,134 INFO L175 Difference]: Start difference. First operand has 268 places, 206 transitions, 2042 flow. Second operand 10 states and 111 transitions. [2024-06-21 19:18:53,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 220 transitions, 2548 flow [2024-06-21 19:18:53,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 220 transitions, 2485 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:18:53,772 INFO L231 Difference]: Finished difference. Result has 269 places, 207 transitions, 2063 flow [2024-06-21 19:18:53,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2063, PETRI_PLACES=269, PETRI_TRANSITIONS=207} [2024-06-21 19:18:53,772 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-21 19:18:53,773 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 207 transitions, 2063 flow [2024-06-21 19:18:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:53,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:53,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:53,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 19:18:53,773 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:53,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1335005308, now seen corresponding path program 21 times [2024-06-21 19:18:53,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:53,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500163884] [2024-06-21 19:18:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:53,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500163884] [2024-06-21 19:18:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500163884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:55,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:18:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984683315] [2024-06-21 19:18:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:18:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:18:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:18:55,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:55,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 207 transitions, 2063 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:55,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:55,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:55,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:56,497 INFO L124 PetriNetUnfolderBase]: 646/1229 cut-off events. [2024-06-21 19:18:56,497 INFO L125 PetriNetUnfolderBase]: For 249833/249833 co-relation queries the response was YES. [2024-06-21 19:18:56,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 1229 events. 646/1229 cut-off events. For 249833/249833 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6846 event pairs, 216 based on Foata normal form. 10/1238 useless extension candidates. Maximal degree in co-relation 9919. Up to 1116 conditions per place. [2024-06-21 19:18:56,509 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 189 selfloop transitions, 27 changer transitions 11/229 dead transitions. [2024-06-21 19:18:56,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 229 transitions, 2619 flow [2024-06-21 19:18:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:18:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:18:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 150 transitions. [2024-06-21 19:18:56,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-21 19:18:56,511 INFO L175 Difference]: Start difference. First operand has 269 places, 207 transitions, 2063 flow. Second operand 14 states and 150 transitions. [2024-06-21 19:18:56,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 229 transitions, 2619 flow [2024-06-21 19:18:57,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 229 transitions, 2545 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 19:18:57,166 INFO L231 Difference]: Finished difference. Result has 275 places, 204 transitions, 2014 flow [2024-06-21 19:18:57,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2014, PETRI_PLACES=275, PETRI_TRANSITIONS=204} [2024-06-21 19:18:57,167 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-21 19:18:57,167 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 204 transitions, 2014 flow [2024-06-21 19:18:57,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:18:57,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:18:57,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:18:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 19:18:57,167 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:18:57,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:18:57,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1341261418, now seen corresponding path program 22 times [2024-06-21 19:18:57,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:18:57,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559259879] [2024-06-21 19:18:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:18:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:18:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:18:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:18:58,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:18:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559259879] [2024-06-21 19:18:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559259879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:18:58,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:18:58,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:18:58,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374016760] [2024-06-21 19:18:58,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:18:58,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:18:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:18:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:18:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:18:58,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:18:58,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 204 transitions, 2014 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) [2024-06-21 19:18:58,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:18:58,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:18:58,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:18:59,590 INFO L124 PetriNetUnfolderBase]: 636/1215 cut-off events. [2024-06-21 19:18:59,590 INFO L125 PetriNetUnfolderBase]: For 254958/254958 co-relation queries the response was YES. [2024-06-21 19:18:59,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 1215 events. 636/1215 cut-off events. For 254958/254958 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6770 event pairs, 216 based on Foata normal form. 10/1224 useless extension candidates. Maximal degree in co-relation 9832. Up to 1102 conditions per place. [2024-06-21 19:18:59,603 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 186 selfloop transitions, 25 changer transitions 11/224 dead transitions. [2024-06-21 19:18:59,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 224 transitions, 2556 flow [2024-06-21 19:18:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:18:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:18:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 19:18:59,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-21 19:18:59,604 INFO L175 Difference]: Start difference. First operand has 275 places, 204 transitions, 2014 flow. Second operand 12 states and 134 transitions. [2024-06-21 19:18:59,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 224 transitions, 2556 flow [2024-06-21 19:19:00,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 224 transitions, 2494 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:19:00,304 INFO L231 Difference]: Finished difference. Result has 271 places, 201 transitions, 1973 flow [2024-06-21 19:19:00,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1973, PETRI_PLACES=271, PETRI_TRANSITIONS=201} [2024-06-21 19:19:00,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-21 19:19:00,305 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 201 transitions, 1973 flow [2024-06-21 19:19:00,305 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) [2024-06-21 19:19:00,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:00,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:00,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 19:19:00,305 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:00,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1695889878, now seen corresponding path program 8 times [2024-06-21 19:19:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:00,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368100123] [2024-06-21 19:19:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:00,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:01,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:01,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368100123] [2024-06-21 19:19:01,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368100123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:01,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:01,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336099453] [2024-06-21 19:19:01,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:01,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:01,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:01,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 201 transitions, 1973 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) [2024-06-21 19:19:01,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:01,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:01,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:02,317 INFO L124 PetriNetUnfolderBase]: 607/1160 cut-off events. [2024-06-21 19:19:02,318 INFO L125 PetriNetUnfolderBase]: For 207541/207541 co-relation queries the response was YES. [2024-06-21 19:19:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 1160 events. 607/1160 cut-off events. For 207541/207541 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6383 event pairs, 215 based on Foata normal form. 2/1161 useless extension candidates. Maximal degree in co-relation 9343. Up to 1114 conditions per place. [2024-06-21 19:19:02,329 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 188 selfloop transitions, 22 changer transitions 0/212 dead transitions. [2024-06-21 19:19:02,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 212 transitions, 2423 flow [2024-06-21 19:19:02,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 19:19:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-21 19:19:02,330 INFO L175 Difference]: Start difference. First operand has 271 places, 201 transitions, 1973 flow. Second operand 11 states and 115 transitions. [2024-06-21 19:19:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 212 transitions, 2423 flow [2024-06-21 19:19:02,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 212 transitions, 2355 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:02,949 INFO L231 Difference]: Finished difference. Result has 268 places, 201 transitions, 1953 flow [2024-06-21 19:19:02,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1953, PETRI_PLACES=268, PETRI_TRANSITIONS=201} [2024-06-21 19:19:02,950 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-21 19:19:02,950 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 201 transitions, 1953 flow [2024-06-21 19:19:02,950 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) [2024-06-21 19:19:02,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:02,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:02,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 19:19:02,951 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:02,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash -672290020, now seen corresponding path program 23 times [2024-06-21 19:19:02,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:02,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46439425] [2024-06-21 19:19:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:02,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:04,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:04,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46439425] [2024-06-21 19:19:04,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46439425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:04,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:19:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601378667] [2024-06-21 19:19:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:04,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:19:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:19:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:19:04,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:04,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 201 transitions, 1953 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:04,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:04,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:04,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:05,387 INFO L124 PetriNetUnfolderBase]: 623/1196 cut-off events. [2024-06-21 19:19:05,387 INFO L125 PetriNetUnfolderBase]: For 235452/235452 co-relation queries the response was YES. [2024-06-21 19:19:05,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1196 events. 623/1196 cut-off events. For 235452/235452 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6666 event pairs, 215 based on Foata normal form. 10/1205 useless extension candidates. Maximal degree in co-relation 9388. Up to 1076 conditions per place. [2024-06-21 19:19:05,398 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 179 selfloop transitions, 28 changer transitions 11/220 dead transitions. [2024-06-21 19:19:05,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 2479 flow [2024-06-21 19:19:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-21 19:19:05,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-21 19:19:05,399 INFO L175 Difference]: Start difference. First operand has 268 places, 201 transitions, 1953 flow. Second operand 12 states and 134 transitions. [2024-06-21 19:19:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 2479 flow [2024-06-21 19:19:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 220 transitions, 2429 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:06,016 INFO L231 Difference]: Finished difference. Result has 270 places, 198 transitions, 1930 flow [2024-06-21 19:19:06,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1930, PETRI_PLACES=270, PETRI_TRANSITIONS=198} [2024-06-21 19:19:06,016 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-21 19:19:06,017 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 198 transitions, 1930 flow [2024-06-21 19:19:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:06,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:06,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:06,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 19:19:06,017 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:06,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash -672294670, now seen corresponding path program 24 times [2024-06-21 19:19:06,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:06,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957548161] [2024-06-21 19:19:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:06,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:06,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:07,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:07,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957548161] [2024-06-21 19:19:07,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957548161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:07,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:07,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549108747] [2024-06-21 19:19:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:07,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:07,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:07,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:07,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 198 transitions, 1930 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) [2024-06-21 19:19:07,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:07,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:07,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:08,206 INFO L124 PetriNetUnfolderBase]: 611/1176 cut-off events. [2024-06-21 19:19:08,207 INFO L125 PetriNetUnfolderBase]: For 231939/231939 co-relation queries the response was YES. [2024-06-21 19:19:08,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 1176 events. 611/1176 cut-off events. For 231939/231939 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6541 event pairs, 211 based on Foata normal form. 8/1183 useless extension candidates. Maximal degree in co-relation 9333. Up to 1066 conditions per place. [2024-06-21 19:19:08,218 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 177 selfloop transitions, 26 changer transitions 11/216 dead transitions. [2024-06-21 19:19:08,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 216 transitions, 2434 flow [2024-06-21 19:19:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 19:19:08,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638888888888889 [2024-06-21 19:19:08,219 INFO L175 Difference]: Start difference. First operand has 270 places, 198 transitions, 1930 flow. Second operand 12 states and 131 transitions. [2024-06-21 19:19:08,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 216 transitions, 2434 flow [2024-06-21 19:19:08,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 216 transitions, 2374 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:08,880 INFO L231 Difference]: Finished difference. Result has 268 places, 195 transitions, 1889 flow [2024-06-21 19:19:08,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1889, PETRI_PLACES=268, PETRI_TRANSITIONS=195} [2024-06-21 19:19:08,881 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-21 19:19:08,881 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 195 transitions, 1889 flow [2024-06-21 19:19:08,881 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) [2024-06-21 19:19:08,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:08,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:08,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 19:19:08,882 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:08,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1045037374, now seen corresponding path program 25 times [2024-06-21 19:19:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:08,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860968977] [2024-06-21 19:19:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860968977] [2024-06-21 19:19:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860968977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:10,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032817554] [2024-06-21 19:19:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:10,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:10,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 195 transitions, 1889 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) [2024-06-21 19:19:10,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:10,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:10,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:11,318 INFO L124 PetriNetUnfolderBase]: 608/1171 cut-off events. [2024-06-21 19:19:11,318 INFO L125 PetriNetUnfolderBase]: For 235446/235446 co-relation queries the response was YES. [2024-06-21 19:19:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9372 conditions, 1171 events. 608/1171 cut-off events. For 235446/235446 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6515 event pairs, 213 based on Foata normal form. 10/1180 useless extension candidates. Maximal degree in co-relation 9244. Up to 1062 conditions per place. [2024-06-21 19:19:11,329 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 25 changer transitions 11/214 dead transitions. [2024-06-21 19:19:11,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 214 transitions, 2403 flow [2024-06-21 19:19:11,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:11,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 19:19:11,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 19:19:11,331 INFO L175 Difference]: Start difference. First operand has 268 places, 195 transitions, 1889 flow. Second operand 12 states and 130 transitions. [2024-06-21 19:19:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 214 transitions, 2403 flow [2024-06-21 19:19:11,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 214 transitions, 2345 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:11,890 INFO L231 Difference]: Finished difference. Result has 264 places, 192 transitions, 1850 flow [2024-06-21 19:19:11,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1850, PETRI_PLACES=264, PETRI_TRANSITIONS=192} [2024-06-21 19:19:11,891 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 235 predicate places. [2024-06-21 19:19:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 192 transitions, 1850 flow [2024-06-21 19:19:11,891 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) [2024-06-21 19:19:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:11,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 19:19:11,891 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:11,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 21079962, now seen corresponding path program 26 times [2024-06-21 19:19:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354742890] [2024-06-21 19:19:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:13,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354742890] [2024-06-21 19:19:13,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354742890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:13,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:13,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:13,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117182040] [2024-06-21 19:19:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:13,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:13,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:13,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 192 transitions, 1850 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) [2024-06-21 19:19:13,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:13,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:13,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:14,226 INFO L124 PetriNetUnfolderBase]: 594/1149 cut-off events. [2024-06-21 19:19:14,226 INFO L125 PetriNetUnfolderBase]: For 217275/217275 co-relation queries the response was YES. [2024-06-21 19:19:14,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9154 conditions, 1149 events. 594/1149 cut-off events. For 217275/217275 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6352 event pairs, 197 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 9028. Up to 821 conditions per place. [2024-06-21 19:19:14,237 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 168 selfloop transitions, 39 changer transitions 7/216 dead transitions. [2024-06-21 19:19:14,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 216 transitions, 2748 flow [2024-06-21 19:19:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 19:19:14,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-21 19:19:14,238 INFO L175 Difference]: Start difference. First operand has 264 places, 192 transitions, 1850 flow. Second operand 11 states and 130 transitions. [2024-06-21 19:19:14,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 216 transitions, 2748 flow [2024-06-21 19:19:14,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2682 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:14,647 INFO L231 Difference]: Finished difference. Result has 261 places, 190 transitions, 1852 flow [2024-06-21 19:19:14,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1852, PETRI_PLACES=261, PETRI_TRANSITIONS=190} [2024-06-21 19:19:14,647 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 232 predicate places. [2024-06-21 19:19:14,647 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 190 transitions, 1852 flow [2024-06-21 19:19:14,647 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) [2024-06-21 19:19:14,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:14,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 19:19:14,648 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 553688638, now seen corresponding path program 27 times [2024-06-21 19:19:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429491048] [2024-06-21 19:19:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:16,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429491048] [2024-06-21 19:19:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429491048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:16,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:16,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:16,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334011013] [2024-06-21 19:19:16,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:16,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:16,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:16,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:16,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 190 transitions, 1852 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) [2024-06-21 19:19:16,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:16,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:16,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:16,881 INFO L124 PetriNetUnfolderBase]: 592/1147 cut-off events. [2024-06-21 19:19:16,881 INFO L125 PetriNetUnfolderBase]: For 220286/220286 co-relation queries the response was YES. [2024-06-21 19:19:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9120 conditions, 1147 events. 592/1147 cut-off events. For 220286/220286 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6385 event pairs, 215 based on Foata normal form. 10/1156 useless extension candidates. Maximal degree in co-relation 8995. Up to 1047 conditions per place. [2024-06-21 19:19:16,892 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 166 selfloop transitions, 27 changer transitions 12/207 dead transitions. [2024-06-21 19:19:16,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 207 transitions, 2336 flow [2024-06-21 19:19:16,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 19:19:16,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 19:19:16,893 INFO L175 Difference]: Start difference. First operand has 261 places, 190 transitions, 1852 flow. Second operand 11 states and 126 transitions. [2024-06-21 19:19:16,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 207 transitions, 2336 flow [2024-06-21 19:19:17,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 207 transitions, 2264 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:17,458 INFO L231 Difference]: Finished difference. Result has 260 places, 186 transitions, 1784 flow [2024-06-21 19:19:17,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1784, PETRI_PLACES=260, PETRI_TRANSITIONS=186} [2024-06-21 19:19:17,459 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-21 19:19:17,459 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 186 transitions, 1784 flow [2024-06-21 19:19:17,459 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) [2024-06-21 19:19:17,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:17,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:17,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 19:19:17,460 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:17,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1365094670, now seen corresponding path program 9 times [2024-06-21 19:19:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:17,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888815526] [2024-06-21 19:19:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:17,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888815526] [2024-06-21 19:19:19,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888815526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:19,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:19,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797128898] [2024-06-21 19:19:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:19,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:19,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 186 transitions, 1784 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) [2024-06-21 19:19:19,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:19,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:19,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:19,692 INFO L124 PetriNetUnfolderBase]: 571/1104 cut-off events. [2024-06-21 19:19:19,692 INFO L125 PetriNetUnfolderBase]: For 185617/185617 co-relation queries the response was YES. [2024-06-21 19:19:19,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8898 conditions, 1104 events. 571/1104 cut-off events. For 185617/185617 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6075 event pairs, 211 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8774. Up to 1039 conditions per place. [2024-06-21 19:19:19,702 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-21 19:19:19,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 199 transitions, 2242 flow [2024-06-21 19:19:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:19:19,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-21 19:19:19,703 INFO L175 Difference]: Start difference. First operand has 260 places, 186 transitions, 1784 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:19:19,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 199 transitions, 2242 flow [2024-06-21 19:19:20,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 199 transitions, 2180 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:20,178 INFO L231 Difference]: Finished difference. Result has 256 places, 187 transitions, 1800 flow [2024-06-21 19:19:20,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1800, PETRI_PLACES=256, PETRI_TRANSITIONS=187} [2024-06-21 19:19:20,178 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-21 19:19:20,178 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 187 transitions, 1800 flow [2024-06-21 19:19:20,178 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) [2024-06-21 19:19:20,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:20,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:20,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 19:19:20,179 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:20,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1365332254, now seen corresponding path program 28 times [2024-06-21 19:19:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353417644] [2024-06-21 19:19:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:21,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:21,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353417644] [2024-06-21 19:19:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353417644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:21,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092098831] [2024-06-21 19:19:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:21,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:21,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:21,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:21,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:21,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 187 transitions, 1800 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) [2024-06-21 19:19:21,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:21,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:21,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:22,220 INFO L124 PetriNetUnfolderBase]: 580/1127 cut-off events. [2024-06-21 19:19:22,220 INFO L125 PetriNetUnfolderBase]: For 198110/198110 co-relation queries the response was YES. [2024-06-21 19:19:22,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8715 conditions, 1127 events. 580/1127 cut-off events. For 198110/198110 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6245 event pairs, 210 based on Foata normal form. 10/1136 useless extension candidates. Maximal degree in co-relation 8593. Up to 1018 conditions per place. [2024-06-21 19:19:22,231 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 171 selfloop transitions, 21 changer transitions 11/205 dead transitions. [2024-06-21 19:19:22,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 205 transitions, 2288 flow [2024-06-21 19:19:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 19:19:22,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-21 19:19:22,233 INFO L175 Difference]: Start difference. First operand has 256 places, 187 transitions, 1800 flow. Second operand 12 states and 130 transitions. [2024-06-21 19:19:22,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 205 transitions, 2288 flow [2024-06-21 19:19:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 205 transitions, 2220 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:22,674 INFO L231 Difference]: Finished difference. Result has 259 places, 184 transitions, 1740 flow [2024-06-21 19:19:22,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1740, PETRI_PLACES=259, PETRI_TRANSITIONS=184} [2024-06-21 19:19:22,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-21 19:19:22,675 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 184 transitions, 1740 flow [2024-06-21 19:19:22,675 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) [2024-06-21 19:19:22,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:22,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 19:19:22,676 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:22,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash -695941922, now seen corresponding path program 10 times [2024-06-21 19:19:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471479887] [2024-06-21 19:19:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471479887] [2024-06-21 19:19:24,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471479887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:24,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:24,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:24,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801438502] [2024-06-21 19:19:24,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:24,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:24,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:24,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:24,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:24,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 184 transitions, 1740 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) [2024-06-21 19:19:24,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:24,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:24,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:24,856 INFO L124 PetriNetUnfolderBase]: 558/1085 cut-off events. [2024-06-21 19:19:24,856 INFO L125 PetriNetUnfolderBase]: For 173547/173547 co-relation queries the response was YES. [2024-06-21 19:19:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8553 conditions, 1085 events. 558/1085 cut-off events. For 173547/173547 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5954 event pairs, 206 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 8430. Up to 1000 conditions per place. [2024-06-21 19:19:24,867 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 171 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-21 19:19:24,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 197 transitions, 2190 flow [2024-06-21 19:19:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:24,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:24,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 19:19:24,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-21 19:19:24,868 INFO L175 Difference]: Start difference. First operand has 259 places, 184 transitions, 1740 flow. Second operand 11 states and 117 transitions. [2024-06-21 19:19:24,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 197 transitions, 2190 flow [2024-06-21 19:19:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 197 transitions, 2140 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:25,402 INFO L231 Difference]: Finished difference. Result has 256 places, 185 transitions, 1772 flow [2024-06-21 19:19:25,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=256, PETRI_TRANSITIONS=185} [2024-06-21 19:19:25,402 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-21 19:19:25,403 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 185 transitions, 1772 flow [2024-06-21 19:19:25,403 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) [2024-06-21 19:19:25,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:25,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:25,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 19:19:25,403 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:25,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2003744340, now seen corresponding path program 1 times [2024-06-21 19:19:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353136419] [2024-06-21 19:19:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353136419] [2024-06-21 19:19:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353136419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:27,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:27,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935817930] [2024-06-21 19:19:27,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:27,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:27,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 185 transitions, 1772 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) [2024-06-21 19:19:27,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:27,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:27,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:27,870 INFO L124 PetriNetUnfolderBase]: 556/1082 cut-off events. [2024-06-21 19:19:27,870 INFO L125 PetriNetUnfolderBase]: For 162784/162784 co-relation queries the response was YES. [2024-06-21 19:19:27,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 1082 events. 556/1082 cut-off events. For 162784/162784 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5940 event pairs, 206 based on Foata normal form. 1/1082 useless extension candidates. Maximal degree in co-relation 8292. Up to 1028 conditions per place. [2024-06-21 19:19:27,881 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 164 selfloop transitions, 30 changer transitions 0/196 dead transitions. [2024-06-21 19:19:27,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 196 transitions, 2190 flow [2024-06-21 19:19:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:19:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:19:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:19:27,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-21 19:19:27,882 INFO L175 Difference]: Start difference. First operand has 256 places, 185 transitions, 1772 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:19:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 196 transitions, 2190 flow [2024-06-21 19:19:28,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 196 transitions, 2106 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:28,314 INFO L231 Difference]: Finished difference. Result has 259 places, 185 transitions, 1759 flow [2024-06-21 19:19:28,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1759, PETRI_PLACES=259, PETRI_TRANSITIONS=185} [2024-06-21 19:19:28,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-21 19:19:28,314 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 185 transitions, 1759 flow [2024-06-21 19:19:28,315 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) [2024-06-21 19:19:28,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:28,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 19:19:28,315 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1039141504, now seen corresponding path program 11 times [2024-06-21 19:19:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:28,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960243158] [2024-06-21 19:19:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:29,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:29,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960243158] [2024-06-21 19:19:29,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960243158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:29,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:29,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416321901] [2024-06-21 19:19:29,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:29,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:29,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 185 transitions, 1759 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) [2024-06-21 19:19:29,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:29,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:29,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:30,222 INFO L124 PetriNetUnfolderBase]: 560/1090 cut-off events. [2024-06-21 19:19:30,222 INFO L125 PetriNetUnfolderBase]: For 169714/169714 co-relation queries the response was YES. [2024-06-21 19:19:30,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8491 conditions, 1090 events. 560/1090 cut-off events. For 169714/169714 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5996 event pairs, 204 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 8368. Up to 1046 conditions per place. [2024-06-21 19:19:30,233 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 180 selfloop transitions, 16 changer transitions 0/198 dead transitions. [2024-06-21 19:19:30,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 198 transitions, 2207 flow [2024-06-21 19:19:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-21 19:19:30,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-21 19:19:30,234 INFO L175 Difference]: Start difference. First operand has 259 places, 185 transitions, 1759 flow. Second operand 11 states and 111 transitions. [2024-06-21 19:19:30,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 198 transitions, 2207 flow [2024-06-21 19:19:30,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 198 transitions, 2139 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 19:19:30,709 INFO L231 Difference]: Finished difference. Result has 258 places, 186 transitions, 1759 flow [2024-06-21 19:19:30,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1759, PETRI_PLACES=258, PETRI_TRANSITIONS=186} [2024-06-21 19:19:30,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 229 predicate places. [2024-06-21 19:19:30,710 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 186 transitions, 1759 flow [2024-06-21 19:19:30,710 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) [2024-06-21 19:19:30,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:30,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 19:19:30,710 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:30,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1718413582, now seen corresponding path program 12 times [2024-06-21 19:19:30,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:30,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884399516] [2024-06-21 19:19:30,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:32,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884399516] [2024-06-21 19:19:32,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884399516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:32,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:32,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050757891] [2024-06-21 19:19:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:32,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:32,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:32,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:32,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 186 transitions, 1759 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) [2024-06-21 19:19:32,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:32,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:32,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:32,745 INFO L124 PetriNetUnfolderBase]: 564/1098 cut-off events. [2024-06-21 19:19:32,745 INFO L125 PetriNetUnfolderBase]: For 170893/170893 co-relation queries the response was YES. [2024-06-21 19:19:32,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8543 conditions, 1098 events. 564/1098 cut-off events. For 170893/170893 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6073 event pairs, 210 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 8420. Up to 1048 conditions per place. [2024-06-21 19:19:32,756 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 171 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-21 19:19:32,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 197 transitions, 2203 flow [2024-06-21 19:19:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-21 19:19:32,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-21 19:19:32,757 INFO L175 Difference]: Start difference. First operand has 258 places, 186 transitions, 1759 flow. Second operand 11 states and 114 transitions. [2024-06-21 19:19:32,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 197 transitions, 2203 flow [2024-06-21 19:19:33,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 197 transitions, 2145 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:33,252 INFO L231 Difference]: Finished difference. Result has 260 places, 187 transitions, 1788 flow [2024-06-21 19:19:33,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1788, PETRI_PLACES=260, PETRI_TRANSITIONS=187} [2024-06-21 19:19:33,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-21 19:19:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 187 transitions, 1788 flow [2024-06-21 19:19:33,253 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) [2024-06-21 19:19:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 19:19:33,253 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:33,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1718405212, now seen corresponding path program 13 times [2024-06-21 19:19:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318545481] [2024-06-21 19:19:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:34,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318545481] [2024-06-21 19:19:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318545481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161808257] [2024-06-21 19:19:34,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:34,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:34,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:34,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 187 transitions, 1788 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) [2024-06-21 19:19:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:35,305 INFO L124 PetriNetUnfolderBase]: 568/1106 cut-off events. [2024-06-21 19:19:35,305 INFO L125 PetriNetUnfolderBase]: For 175127/175127 co-relation queries the response was YES. [2024-06-21 19:19:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8638 conditions, 1106 events. 568/1106 cut-off events. For 175127/175127 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6121 event pairs, 210 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 8514. Up to 1040 conditions per place. [2024-06-21 19:19:35,316 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-21 19:19:35,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 199 transitions, 2240 flow [2024-06-21 19:19:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:19:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:19:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-21 19:19:35,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-21 19:19:35,318 INFO L175 Difference]: Start difference. First operand has 260 places, 187 transitions, 1788 flow. Second operand 11 states and 115 transitions. [2024-06-21 19:19:35,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 199 transitions, 2240 flow [2024-06-21 19:19:35,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 199 transitions, 2165 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:35,839 INFO L231 Difference]: Finished difference. Result has 262 places, 188 transitions, 1799 flow [2024-06-21 19:19:35,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1799, PETRI_PLACES=262, PETRI_TRANSITIONS=188} [2024-06-21 19:19:35,839 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-21 19:19:35,839 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 188 transitions, 1799 flow [2024-06-21 19:19:35,839 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) [2024-06-21 19:19:35,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:35,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:35,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 19:19:35,840 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:35,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2003751036, now seen corresponding path program 29 times [2024-06-21 19:19:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061906515] [2024-06-21 19:19:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061906515] [2024-06-21 19:19:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061906515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:37,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:19:37,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945084528] [2024-06-21 19:19:37,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:37,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:19:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:37,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:19:37,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:19:37,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:19:37,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 188 transitions, 1799 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) [2024-06-21 19:19:37,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:37,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:19:37,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:38,110 INFO L124 PetriNetUnfolderBase]: 535/1047 cut-off events. [2024-06-21 19:19:38,111 INFO L125 PetriNetUnfolderBase]: For 171091/171091 co-relation queries the response was YES. [2024-06-21 19:19:38,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6167 conditions, 1047 events. 535/1047 cut-off events. For 171091/171091 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5782 event pairs, 181 based on Foata normal form. 26/1072 useless extension candidates. Maximal degree in co-relation 6042. Up to 887 conditions per place. [2024-06-21 19:19:38,120 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 165 selfloop transitions, 21 changer transitions 17/205 dead transitions. [2024-06-21 19:19:38,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 205 transitions, 2273 flow [2024-06-21 19:19:38,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:19:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:19:38,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-21 19:19:38,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-21 19:19:38,121 INFO L175 Difference]: Start difference. First operand has 262 places, 188 transitions, 1799 flow. Second operand 13 states and 135 transitions. [2024-06-21 19:19:38,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 205 transitions, 2273 flow [2024-06-21 19:19:38,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 205 transitions, 2197 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:38,404 INFO L231 Difference]: Finished difference. Result has 266 places, 179 transitions, 1647 flow [2024-06-21 19:19:38,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1647, PETRI_PLACES=266, PETRI_TRANSITIONS=179} [2024-06-21 19:19:38,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-21 19:19:38,405 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 179 transitions, 1647 flow [2024-06-21 19:19:38,405 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) [2024-06-21 19:19:38,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:38,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:38,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 19:19:38,405 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:38,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:38,406 INFO L85 PathProgramCache]: Analyzing trace with hash -576216420, now seen corresponding path program 30 times [2024-06-21 19:19:38,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:38,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774708186] [2024-06-21 19:19:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:38,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:40,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774708186] [2024-06-21 19:19:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774708186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:40,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:40,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:40,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258715053] [2024-06-21 19:19:40,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:40,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:40,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:40,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:40,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 179 transitions, 1647 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:40,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:40,510 INFO L124 PetriNetUnfolderBase]: 504/990 cut-off events. [2024-06-21 19:19:40,510 INFO L125 PetriNetUnfolderBase]: For 126793/126793 co-relation queries the response was YES. [2024-06-21 19:19:40,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 990 events. 504/990 cut-off events. For 126793/126793 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5364 event pairs, 93 based on Foata normal form. 8/997 useless extension candidates. Maximal degree in co-relation 6188. Up to 316 conditions per place. [2024-06-21 19:19:40,519 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 120 selfloop transitions, 68 changer transitions 15/205 dead transitions. [2024-06-21 19:19:40,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 205 transitions, 2331 flow [2024-06-21 19:19:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-21 19:19:40,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-21 19:19:40,520 INFO L175 Difference]: Start difference. First operand has 266 places, 179 transitions, 1647 flow. Second operand 9 states and 130 transitions. [2024-06-21 19:19:40,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 205 transitions, 2331 flow [2024-06-21 19:19:40,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 205 transitions, 2237 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-21 19:19:40,834 INFO L231 Difference]: Finished difference. Result has 253 places, 176 transitions, 1681 flow [2024-06-21 19:19:40,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1681, PETRI_PLACES=253, PETRI_TRANSITIONS=176} [2024-06-21 19:19:40,834 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-21 19:19:40,834 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 176 transitions, 1681 flow [2024-06-21 19:19:40,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:40,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:40,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 19:19:40,835 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:40,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -768073886, now seen corresponding path program 31 times [2024-06-21 19:19:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597286783] [2024-06-21 19:19:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:42,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597286783] [2024-06-21 19:19:42,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597286783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:42,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:42,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:42,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684259618] [2024-06-21 19:19:42,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:42,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:42,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:42,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:42,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 176 transitions, 1681 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:42,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:42,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:42,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:43,077 INFO L124 PetriNetUnfolderBase]: 489/965 cut-off events. [2024-06-21 19:19:43,078 INFO L125 PetriNetUnfolderBase]: For 132011/132011 co-relation queries the response was YES. [2024-06-21 19:19:43,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5746 conditions, 965 events. 489/965 cut-off events. For 132011/132011 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5228 event pairs, 96 based on Foata normal form. 16/980 useless extension candidates. Maximal degree in co-relation 5624. Up to 510 conditions per place. [2024-06-21 19:19:43,086 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 109 selfloop transitions, 67 changer transitions 20/198 dead transitions. [2024-06-21 19:19:43,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 198 transitions, 2171 flow [2024-06-21 19:19:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 19:19:43,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-21 19:19:43,087 INFO L175 Difference]: Start difference. First operand has 253 places, 176 transitions, 1681 flow. Second operand 10 states and 136 transitions. [2024-06-21 19:19:43,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 198 transitions, 2171 flow [2024-06-21 19:19:43,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 198 transitions, 2059 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 19:19:43,323 INFO L231 Difference]: Finished difference. Result has 251 places, 167 transitions, 1620 flow [2024-06-21 19:19:43,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1620, PETRI_PLACES=251, PETRI_TRANSITIONS=167} [2024-06-21 19:19:43,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-21 19:19:43,324 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 167 transitions, 1620 flow [2024-06-21 19:19:43,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:43,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:43,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 19:19:43,324 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:43,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -518008650, now seen corresponding path program 32 times [2024-06-21 19:19:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046296241] [2024-06-21 19:19:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:43,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:44,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046296241] [2024-06-21 19:19:44,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046296241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:44,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:44,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:44,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827980309] [2024-06-21 19:19:44,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:44,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:45,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:45,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 167 transitions, 1620 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:45,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:45,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:45,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:45,415 INFO L124 PetriNetUnfolderBase]: 446/873 cut-off events. [2024-06-21 19:19:45,415 INFO L125 PetriNetUnfolderBase]: For 96520/96520 co-relation queries the response was YES. [2024-06-21 19:19:45,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 873 events. 446/873 cut-off events. For 96520/96520 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4567 event pairs, 82 based on Foata normal form. 8/880 useless extension candidates. Maximal degree in co-relation 5266. Up to 500 conditions per place. [2024-06-21 19:19:45,422 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 107 selfloop transitions, 65 changer transitions 14/188 dead transitions. [2024-06-21 19:19:45,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 188 transitions, 2076 flow [2024-06-21 19:19:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 19:19:45,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-21 19:19:45,423 INFO L175 Difference]: Start difference. First operand has 251 places, 167 transitions, 1620 flow. Second operand 10 states and 133 transitions. [2024-06-21 19:19:45,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 188 transitions, 2076 flow [2024-06-21 19:19:45,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 188 transitions, 1893 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 19:19:45,611 INFO L231 Difference]: Finished difference. Result has 237 places, 164 transitions, 1552 flow [2024-06-21 19:19:45,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1552, PETRI_PLACES=237, PETRI_TRANSITIONS=164} [2024-06-21 19:19:45,612 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 208 predicate places. [2024-06-21 19:19:45,612 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 164 transitions, 1552 flow [2024-06-21 19:19:45,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:45,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:45,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:45,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 19:19:45,612 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:45,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:45,613 INFO L85 PathProgramCache]: Analyzing trace with hash -518123970, now seen corresponding path program 33 times [2024-06-21 19:19:45,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:45,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904275671] [2024-06-21 19:19:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:47,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:47,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:47,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904275671] [2024-06-21 19:19:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904275671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:47,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:47,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993834625] [2024-06-21 19:19:47,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:47,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:47,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:47,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 164 transitions, 1552 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:47,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:47,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:47,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:47,654 INFO L124 PetriNetUnfolderBase]: 439/860 cut-off events. [2024-06-21 19:19:47,655 INFO L125 PetriNetUnfolderBase]: For 94473/94473 co-relation queries the response was YES. [2024-06-21 19:19:47,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 860 events. 439/860 cut-off events. For 94473/94473 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4501 event pairs, 74 based on Foata normal form. 8/867 useless extension candidates. Maximal degree in co-relation 5119. Up to 482 conditions per place. [2024-06-21 19:19:47,661 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 102 selfloop transitions, 60 changer transitions 22/186 dead transitions. [2024-06-21 19:19:47,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 186 transitions, 2006 flow [2024-06-21 19:19:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:19:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:19:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-21 19:19:47,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 19:19:47,662 INFO L175 Difference]: Start difference. First operand has 237 places, 164 transitions, 1552 flow. Second operand 9 states and 126 transitions. [2024-06-21 19:19:47,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 186 transitions, 2006 flow [2024-06-21 19:19:47,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 186 transitions, 1870 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:47,874 INFO L231 Difference]: Finished difference. Result has 232 places, 157 transitions, 1488 flow [2024-06-21 19:19:47,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=232, PETRI_TRANSITIONS=157} [2024-06-21 19:19:47,875 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2024-06-21 19:19:47,875 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 157 transitions, 1488 flow [2024-06-21 19:19:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:47,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:47,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:47,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 19:19:47,876 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:47,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash -452490114, now seen corresponding path program 34 times [2024-06-21 19:19:47,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:47,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301961974] [2024-06-21 19:19:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:47,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:49,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:49,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301961974] [2024-06-21 19:19:49,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301961974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:49,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:49,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:49,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146920693] [2024-06-21 19:19:49,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:49,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:49,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:49,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:49,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 157 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:49,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:49,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:49,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:50,019 INFO L124 PetriNetUnfolderBase]: 423/832 cut-off events. [2024-06-21 19:19:50,019 INFO L125 PetriNetUnfolderBase]: For 97107/97107 co-relation queries the response was YES. [2024-06-21 19:19:50,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5081 conditions, 832 events. 423/832 cut-off events. For 97107/97107 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4333 event pairs, 71 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 4968. Up to 557 conditions per place. [2024-06-21 19:19:50,026 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 114 selfloop transitions, 47 changer transitions 12/175 dead transitions. [2024-06-21 19:19:50,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 175 transitions, 1918 flow [2024-06-21 19:19:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:19:50,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:19:50,027 INFO L175 Difference]: Start difference. First operand has 232 places, 157 transitions, 1488 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:19:50,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 175 transitions, 1918 flow [2024-06-21 19:19:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 175 transitions, 1773 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:19:50,253 INFO L231 Difference]: Finished difference. Result has 224 places, 154 transitions, 1418 flow [2024-06-21 19:19:50,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=224, PETRI_TRANSITIONS=154} [2024-06-21 19:19:50,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-21 19:19:50,253 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 154 transitions, 1418 flow [2024-06-21 19:19:50,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:50,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:50,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 19:19:50,254 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:50,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2121056536, now seen corresponding path program 35 times [2024-06-21 19:19:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619947731] [2024-06-21 19:19:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:50,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619947731] [2024-06-21 19:19:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619947731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811027570] [2024-06-21 19:19:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:51,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:51,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 154 transitions, 1418 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:51,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:51,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:51,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:52,373 INFO L124 PetriNetUnfolderBase]: 413/818 cut-off events. [2024-06-21 19:19:52,373 INFO L125 PetriNetUnfolderBase]: For 90094/90094 co-relation queries the response was YES. [2024-06-21 19:19:52,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 818 events. 413/818 cut-off events. For 90094/90094 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4261 event pairs, 72 based on Foata normal form. 10/827 useless extension candidates. Maximal degree in co-relation 4786. Up to 533 conditions per place. [2024-06-21 19:19:52,380 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 109 selfloop transitions, 49 changer transitions 12/172 dead transitions. [2024-06-21 19:19:52,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 172 transitions, 1842 flow [2024-06-21 19:19:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:19:52,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-21 19:19:52,381 INFO L175 Difference]: Start difference. First operand has 224 places, 154 transitions, 1418 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:19:52,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 172 transitions, 1842 flow [2024-06-21 19:19:52,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 172 transitions, 1719 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:19:52,557 INFO L231 Difference]: Finished difference. Result has 222 places, 151 transitions, 1378 flow [2024-06-21 19:19:52,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1378, PETRI_PLACES=222, PETRI_TRANSITIONS=151} [2024-06-21 19:19:52,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-21 19:19:52,557 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 151 transitions, 1378 flow [2024-06-21 19:19:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:52,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:52,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:52,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 19:19:52,558 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:52,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash 407990724, now seen corresponding path program 36 times [2024-06-21 19:19:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:52,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420055008] [2024-06-21 19:19:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:52,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420055008] [2024-06-21 19:19:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420055008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772230947] [2024-06-21 19:19:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:54,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:54,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:54,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 151 transitions, 1378 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:54,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:54,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:54,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:54,503 INFO L124 PetriNetUnfolderBase]: 401/798 cut-off events. [2024-06-21 19:19:54,503 INFO L125 PetriNetUnfolderBase]: For 83504/83504 co-relation queries the response was YES. [2024-06-21 19:19:54,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 798 events. 401/798 cut-off events. For 83504/83504 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4140 event pairs, 68 based on Foata normal form. 8/805 useless extension candidates. Maximal degree in co-relation 4651. Up to 523 conditions per place. [2024-06-21 19:19:54,508 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 107 selfloop transitions, 47 changer transitions 12/168 dead transitions. [2024-06-21 19:19:54,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 168 transitions, 1780 flow [2024-06-21 19:19:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:19:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-21 19:19:54,510 INFO L175 Difference]: Start difference. First operand has 222 places, 151 transitions, 1378 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:19:54,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 168 transitions, 1780 flow [2024-06-21 19:19:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 168 transitions, 1678 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:54,687 INFO L231 Difference]: Finished difference. Result has 220 places, 148 transitions, 1352 flow [2024-06-21 19:19:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=220, PETRI_TRANSITIONS=148} [2024-06-21 19:19:54,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-21 19:19:54,688 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 148 transitions, 1352 flow [2024-06-21 19:19:54,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:54,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:54,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:54,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 19:19:54,688 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash 403406754, now seen corresponding path program 37 times [2024-06-21 19:19:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122008087] [2024-06-21 19:19:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122008087] [2024-06-21 19:19:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122008087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:56,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:56,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895396827] [2024-06-21 19:19:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:56,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:56,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:56,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 148 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:56,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:56,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:56,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:56,604 INFO L124 PetriNetUnfolderBase]: 423/844 cut-off events. [2024-06-21 19:19:56,604 INFO L125 PetriNetUnfolderBase]: For 112174/112174 co-relation queries the response was YES. [2024-06-21 19:19:56,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 844 events. 423/844 cut-off events. For 112174/112174 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4408 event pairs, 85 based on Foata normal form. 8/851 useless extension candidates. Maximal degree in co-relation 5569. Up to 477 conditions per place. [2024-06-21 19:19:56,611 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 111 selfloop transitions, 48 changer transitions 11/172 dead transitions. [2024-06-21 19:19:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 172 transitions, 1966 flow [2024-06-21 19:19:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:56,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 19:19:56,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-21 19:19:56,612 INFO L175 Difference]: Start difference. First operand has 220 places, 148 transitions, 1352 flow. Second operand 10 states and 138 transitions. [2024-06-21 19:19:56,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 172 transitions, 1966 flow [2024-06-21 19:19:56,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 172 transitions, 1864 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 19:19:56,795 INFO L231 Difference]: Finished difference. Result has 217 places, 145 transitions, 1336 flow [2024-06-21 19:19:56,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1336, PETRI_PLACES=217, PETRI_TRANSITIONS=145} [2024-06-21 19:19:56,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-21 19:19:56,795 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 145 transitions, 1336 flow [2024-06-21 19:19:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:56,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:56,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:56,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 19:19:56,796 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:56,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 403522074, now seen corresponding path program 38 times [2024-06-21 19:19:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732010535] [2024-06-21 19:19:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:56,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:19:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:19:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:19:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732010535] [2024-06-21 19:19:58,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732010535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:19:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:19:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:19:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242491337] [2024-06-21 19:19:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:19:58,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:19:58,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:19:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:19:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:19:58,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:19:58,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 145 transitions, 1336 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:58,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:19:58,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:19:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:19:58,735 INFO L124 PetriNetUnfolderBase]: 413/826 cut-off events. [2024-06-21 19:19:58,736 INFO L125 PetriNetUnfolderBase]: For 109577/109577 co-relation queries the response was YES. [2024-06-21 19:19:58,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5594 conditions, 826 events. 413/826 cut-off events. For 109577/109577 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4293 event pairs, 78 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 5489. Up to 486 conditions per place. [2024-06-21 19:19:58,742 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 45 changer transitions 8/168 dead transitions. [2024-06-21 19:19:58,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 168 transitions, 1938 flow [2024-06-21 19:19:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:19:58,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:19:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:19:58,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-21 19:19:58,743 INFO L175 Difference]: Start difference. First operand has 217 places, 145 transitions, 1336 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:19:58,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 168 transitions, 1938 flow [2024-06-21 19:19:58,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 168 transitions, 1833 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 19:19:58,938 INFO L231 Difference]: Finished difference. Result has 214 places, 143 transitions, 1317 flow [2024-06-21 19:19:58,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1317, PETRI_PLACES=214, PETRI_TRANSITIONS=143} [2024-06-21 19:19:58,939 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-21 19:19:58,939 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 143 transitions, 1317 flow [2024-06-21 19:19:58,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:19:58,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:19:58,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:19:58,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 19:19:58,940 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:19:58,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:19:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 403526724, now seen corresponding path program 39 times [2024-06-21 19:19:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:19:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436042182] [2024-06-21 19:19:58,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:19:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:19:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:00,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436042182] [2024-06-21 19:20:00,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436042182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:00,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:00,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832934510] [2024-06-21 19:20:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:00,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:00,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:00,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 143 transitions, 1317 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:00,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:00,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:00,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:00,839 INFO L124 PetriNetUnfolderBase]: 382/765 cut-off events. [2024-06-21 19:20:00,839 INFO L125 PetriNetUnfolderBase]: For 81434/81434 co-relation queries the response was YES. [2024-06-21 19:20:00,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4576 conditions, 765 events. 382/765 cut-off events. For 81434/81434 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3921 event pairs, 69 based on Foata normal form. 10/774 useless extension candidates. Maximal degree in co-relation 4473. Up to 486 conditions per place. [2024-06-21 19:20:00,845 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 102 selfloop transitions, 41 changer transitions 16/161 dead transitions. [2024-06-21 19:20:00,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 161 transitions, 1719 flow [2024-06-21 19:20:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-21 19:20:00,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-21 19:20:00,846 INFO L175 Difference]: Start difference. First operand has 214 places, 143 transitions, 1317 flow. Second operand 10 states and 128 transitions. [2024-06-21 19:20:00,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 161 transitions, 1719 flow [2024-06-21 19:20:00,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 161 transitions, 1627 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:01,000 INFO L231 Difference]: Finished difference. Result has 213 places, 138 transitions, 1274 flow [2024-06-21 19:20:01,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1274, PETRI_PLACES=213, PETRI_TRANSITIONS=138} [2024-06-21 19:20:01,000 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 184 predicate places. [2024-06-21 19:20:01,000 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 138 transitions, 1274 flow [2024-06-21 19:20:01,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:01,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:01,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 19:20:01,001 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:01,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash -978709488, now seen corresponding path program 40 times [2024-06-21 19:20:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:01,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350802728] [2024-06-21 19:20:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:02,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:02,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350802728] [2024-06-21 19:20:02,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350802728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:02,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:02,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160432582] [2024-06-21 19:20:02,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:02,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:02,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:02,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:02,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:02,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 138 transitions, 1274 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:02,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:02,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:02,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:03,098 INFO L124 PetriNetUnfolderBase]: 368/739 cut-off events. [2024-06-21 19:20:03,098 INFO L125 PetriNetUnfolderBase]: For 73435/73435 co-relation queries the response was YES. [2024-06-21 19:20:03,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 739 events. 368/739 cut-off events. For 73435/73435 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3751 event pairs, 56 based on Foata normal form. 8/746 useless extension candidates. Maximal degree in co-relation 4337. Up to 265 conditions per place. [2024-06-21 19:20:03,104 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 68 changer transitions 12/164 dead transitions. [2024-06-21 19:20:03,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 164 transitions, 1856 flow [2024-06-21 19:20:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 19:20:03,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2024-06-21 19:20:03,105 INFO L175 Difference]: Start difference. First operand has 213 places, 138 transitions, 1274 flow. Second operand 10 states and 137 transitions. [2024-06-21 19:20:03,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 164 transitions, 1856 flow [2024-06-21 19:20:03,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 164 transitions, 1758 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:03,226 INFO L231 Difference]: Finished difference. Result has 205 places, 135 transitions, 1306 flow [2024-06-21 19:20:03,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1306, PETRI_PLACES=205, PETRI_TRANSITIONS=135} [2024-06-21 19:20:03,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-21 19:20:03,227 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 135 transitions, 1306 flow [2024-06-21 19:20:03,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:03,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:03,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 19:20:03,227 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:03,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:03,227 INFO L85 PathProgramCache]: Analyzing trace with hash -118530346, now seen corresponding path program 41 times [2024-06-21 19:20:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480339817] [2024-06-21 19:20:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:04,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480339817] [2024-06-21 19:20:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480339817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:04,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:04,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35842632] [2024-06-21 19:20:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:04,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:04,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 135 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:04,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:04,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:04,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:05,099 INFO L124 PetriNetUnfolderBase]: 383/770 cut-off events. [2024-06-21 19:20:05,099 INFO L125 PetriNetUnfolderBase]: For 93637/93637 co-relation queries the response was YES. [2024-06-21 19:20:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5282 conditions, 770 events. 383/770 cut-off events. For 93637/93637 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3941 event pairs, 63 based on Foata normal form. 8/777 useless extension candidates. Maximal degree in co-relation 5183. Up to 374 conditions per place. [2024-06-21 19:20:05,105 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 84 selfloop transitions, 68 changer transitions 8/162 dead transitions. [2024-06-21 19:20:05,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 162 transitions, 1904 flow [2024-06-21 19:20:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:05,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-21 19:20:05,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-21 19:20:05,106 INFO L175 Difference]: Start difference. First operand has 205 places, 135 transitions, 1306 flow. Second operand 10 states and 140 transitions. [2024-06-21 19:20:05,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 162 transitions, 1904 flow [2024-06-21 19:20:05,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 162 transitions, 1771 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:05,247 INFO L231 Difference]: Finished difference. Result has 202 places, 133 transitions, 1305 flow [2024-06-21 19:20:05,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1305, PETRI_PLACES=202, PETRI_TRANSITIONS=133} [2024-06-21 19:20:05,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-21 19:20:05,247 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 133 transitions, 1305 flow [2024-06-21 19:20:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:05,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 19:20:05,248 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:05,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -118525696, now seen corresponding path program 42 times [2024-06-21 19:20:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259241616] [2024-06-21 19:20:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:05,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:06,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259241616] [2024-06-21 19:20:06,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259241616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:06,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:06,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126574308] [2024-06-21 19:20:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:06,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:06,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:07,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:07,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 133 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:07,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:07,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:07,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:07,450 INFO L124 PetriNetUnfolderBase]: 352/709 cut-off events. [2024-06-21 19:20:07,450 INFO L125 PetriNetUnfolderBase]: For 69392/69392 co-relation queries the response was YES. [2024-06-21 19:20:07,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 709 events. 352/709 cut-off events. For 69392/69392 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3569 event pairs, 54 based on Foata normal form. 10/718 useless extension candidates. Maximal degree in co-relation 4267. Up to 374 conditions per place. [2024-06-21 19:20:07,455 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 74 selfloop transitions, 64 changer transitions 15/155 dead transitions. [2024-06-21 19:20:07,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 155 transitions, 1715 flow [2024-06-21 19:20:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 19:20:07,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-21 19:20:07,456 INFO L175 Difference]: Start difference. First operand has 202 places, 133 transitions, 1305 flow. Second operand 10 states and 134 transitions. [2024-06-21 19:20:07,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 155 transitions, 1715 flow [2024-06-21 19:20:07,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 155 transitions, 1577 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:07,559 INFO L231 Difference]: Finished difference. Result has 201 places, 128 transitions, 1261 flow [2024-06-21 19:20:07,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1261, PETRI_PLACES=201, PETRI_TRANSITIONS=128} [2024-06-21 19:20:07,560 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-21 19:20:07,560 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 128 transitions, 1261 flow [2024-06-21 19:20:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:07,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:07,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:07,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 19:20:07,560 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:07,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash -113877122, now seen corresponding path program 14 times [2024-06-21 19:20:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:07,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826324606] [2024-06-21 19:20:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:09,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826324606] [2024-06-21 19:20:09,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826324606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:09,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:09,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140860173] [2024-06-21 19:20:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:09,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:09,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:09,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 128 transitions, 1261 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:09,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:09,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:09,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:09,813 INFO L124 PetriNetUnfolderBase]: 328/658 cut-off events. [2024-06-21 19:20:09,813 INFO L125 PetriNetUnfolderBase]: For 49236/49236 co-relation queries the response was YES. [2024-06-21 19:20:09,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 658 events. 328/658 cut-off events. For 49236/49236 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3239 event pairs, 62 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4092. Up to 427 conditions per place. [2024-06-21 19:20:09,818 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 38 changer transitions 0/145 dead transitions. [2024-06-21 19:20:09,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 145 transitions, 1645 flow [2024-06-21 19:20:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:09,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 19:20:09,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 19:20:09,819 INFO L175 Difference]: Start difference. First operand has 201 places, 128 transitions, 1261 flow. Second operand 10 states and 120 transitions. [2024-06-21 19:20:09,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 145 transitions, 1645 flow [2024-06-21 19:20:09,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 145 transitions, 1507 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:09,914 INFO L231 Difference]: Finished difference. Result has 194 places, 129 transitions, 1241 flow [2024-06-21 19:20:09,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1123, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1241, PETRI_PLACES=194, PETRI_TRANSITIONS=129} [2024-06-21 19:20:09,914 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-21 19:20:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 129 transitions, 1241 flow [2024-06-21 19:20:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:09,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 19:20:09,915 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:09,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash -114057046, now seen corresponding path program 43 times [2024-06-21 19:20:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:09,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671227157] [2024-06-21 19:20:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:09,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:11,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:11,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671227157] [2024-06-21 19:20:11,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671227157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:11,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:11,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493764757] [2024-06-21 19:20:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:11,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:11,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:11,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:11,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 129 transitions, 1241 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:11,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:11,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:11,828 INFO L124 PetriNetUnfolderBase]: 344/694 cut-off events. [2024-06-21 19:20:11,828 INFO L125 PetriNetUnfolderBase]: For 62431/62431 co-relation queries the response was YES. [2024-06-21 19:20:11,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4182 conditions, 694 events. 344/694 cut-off events. For 62431/62431 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3469 event pairs, 60 based on Foata normal form. 10/703 useless extension candidates. Maximal degree in co-relation 4089. Up to 401 conditions per place. [2024-06-21 19:20:11,833 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 57 changer transitions 11/151 dead transitions. [2024-06-21 19:20:11,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 151 transitions, 1647 flow [2024-06-21 19:20:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:11,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 19:20:11,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-21 19:20:11,834 INFO L175 Difference]: Start difference. First operand has 194 places, 129 transitions, 1241 flow. Second operand 10 states and 135 transitions. [2024-06-21 19:20:11,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 151 transitions, 1647 flow [2024-06-21 19:20:11,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 151 transitions, 1537 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 19:20:11,936 INFO L231 Difference]: Finished difference. Result has 196 places, 126 transitions, 1230 flow [2024-06-21 19:20:11,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1230, PETRI_PLACES=196, PETRI_TRANSITIONS=126} [2024-06-21 19:20:11,936 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-21 19:20:11,936 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 126 transitions, 1230 flow [2024-06-21 19:20:11,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:11,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:11,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 19:20:11,937 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:11,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash 52172084, now seen corresponding path program 44 times [2024-06-21 19:20:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326717091] [2024-06-21 19:20:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:13,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:13,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326717091] [2024-06-21 19:20:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326717091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:13,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:13,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136434217] [2024-06-21 19:20:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:13,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:13,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:13,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:13,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:13,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 126 transitions, 1230 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:13,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:13,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:13,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:14,080 INFO L124 PetriNetUnfolderBase]: 361/733 cut-off events. [2024-06-21 19:20:14,081 INFO L125 PetriNetUnfolderBase]: For 81375/81375 co-relation queries the response was YES. [2024-06-21 19:20:14,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4958 conditions, 733 events. 361/733 cut-off events. For 81375/81375 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3715 event pairs, 66 based on Foata normal form. 8/740 useless extension candidates. Maximal degree in co-relation 4864. Up to 359 conditions per place. [2024-06-21 19:20:14,086 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 90 selfloop transitions, 51 changer transitions 7/150 dead transitions. [2024-06-21 19:20:14,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 150 transitions, 1778 flow [2024-06-21 19:20:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 19:20:14,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-21 19:20:14,087 INFO L175 Difference]: Start difference. First operand has 196 places, 126 transitions, 1230 flow. Second operand 11 states and 144 transitions. [2024-06-21 19:20:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 150 transitions, 1778 flow [2024-06-21 19:20:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 150 transitions, 1656 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:14,199 INFO L231 Difference]: Finished difference. Result has 195 places, 124 transitions, 1204 flow [2024-06-21 19:20:14,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1204, PETRI_PLACES=195, PETRI_TRANSITIONS=124} [2024-06-21 19:20:14,200 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 19:20:14,200 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 124 transitions, 1204 flow [2024-06-21 19:20:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:14,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:14,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:14,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 19:20:14,200 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:14,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash -91325950, now seen corresponding path program 15 times [2024-06-21 19:20:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77999969] [2024-06-21 19:20:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77999969] [2024-06-21 19:20:16,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77999969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:16,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:16,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:16,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10321065] [2024-06-21 19:20:16,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:16,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:16,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:16,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 124 transitions, 1204 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) [2024-06-21 19:20:16,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:16,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:16,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:16,813 INFO L124 PetriNetUnfolderBase]: 347/703 cut-off events. [2024-06-21 19:20:16,813 INFO L125 PetriNetUnfolderBase]: For 66804/66804 co-relation queries the response was YES. [2024-06-21 19:20:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 703 events. 347/703 cut-off events. For 66804/66804 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3542 event pairs, 69 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4784. Up to 472 conditions per place. [2024-06-21 19:20:16,818 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 103 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-21 19:20:16,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 144 transitions, 1598 flow [2024-06-21 19:20:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 19:20:16,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-21 19:20:16,820 INFO L175 Difference]: Start difference. First operand has 195 places, 124 transitions, 1204 flow. Second operand 12 states and 139 transitions. [2024-06-21 19:20:16,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 144 transitions, 1598 flow [2024-06-21 19:20:16,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 144 transitions, 1498 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:16,929 INFO L231 Difference]: Finished difference. Result has 195 places, 125 transitions, 1226 flow [2024-06-21 19:20:16,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1226, PETRI_PLACES=195, PETRI_TRANSITIONS=125} [2024-06-21 19:20:16,929 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 19:20:16,929 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 125 transitions, 1226 flow [2024-06-21 19:20:16,930 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) [2024-06-21 19:20:16,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:16,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:16,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 19:20:16,930 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:16,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -973947888, now seen corresponding path program 45 times [2024-06-21 19:20:16,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:16,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603220582] [2024-06-21 19:20:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:18,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603220582] [2024-06-21 19:20:18,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603220582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:18,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:18,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356920477] [2024-06-21 19:20:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:18,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:18,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:18,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 125 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:18,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:18,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:18,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:19,223 INFO L124 PetriNetUnfolderBase]: 356/726 cut-off events. [2024-06-21 19:20:19,223 INFO L125 PetriNetUnfolderBase]: For 77177/77177 co-relation queries the response was YES. [2024-06-21 19:20:19,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 726 events. 356/726 cut-off events. For 77177/77177 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3704 event pairs, 73 based on Foata normal form. 10/735 useless extension candidates. Maximal degree in co-relation 4708. Up to 451 conditions per place. [2024-06-21 19:20:19,228 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 82 selfloop transitions, 51 changer transitions 11/146 dead transitions. [2024-06-21 19:20:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 146 transitions, 1614 flow [2024-06-21 19:20:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 19:20:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-21 19:20:19,229 INFO L175 Difference]: Start difference. First operand has 195 places, 125 transitions, 1226 flow. Second operand 10 states and 131 transitions. [2024-06-21 19:20:19,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 146 transitions, 1614 flow [2024-06-21 19:20:19,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 146 transitions, 1500 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:19,360 INFO L231 Difference]: Finished difference. Result has 195 places, 122 transitions, 1197 flow [2024-06-21 19:20:19,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=195, PETRI_TRANSITIONS=122} [2024-06-21 19:20:19,360 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-21 19:20:19,360 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 122 transitions, 1197 flow [2024-06-21 19:20:19,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:19,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:19,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:19,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 19:20:19,361 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:19,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:19,361 INFO L85 PathProgramCache]: Analyzing trace with hash -114061696, now seen corresponding path program 46 times [2024-06-21 19:20:19,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53323596] [2024-06-21 19:20:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:19,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53323596] [2024-06-21 19:20:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53323596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:20,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:20,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 19:20:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140540140] [2024-06-21 19:20:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 19:20:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 19:20:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 19:20:21,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:21,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 122 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:21,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:21,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:21,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:21,462 INFO L124 PetriNetUnfolderBase]: 320/658 cut-off events. [2024-06-21 19:20:21,462 INFO L125 PetriNetUnfolderBase]: For 57485/57485 co-relation queries the response was YES. [2024-06-21 19:20:21,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 658 events. 320/658 cut-off events. For 57485/57485 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3301 event pairs, 56 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 3912. Up to 383 conditions per place. [2024-06-21 19:20:21,466 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 52 changer transitions 11/142 dead transitions. [2024-06-21 19:20:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 142 transitions, 1563 flow [2024-06-21 19:20:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 19:20:21,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-21 19:20:21,467 INFO L175 Difference]: Start difference. First operand has 195 places, 122 transitions, 1197 flow. Second operand 10 states and 130 transitions. [2024-06-21 19:20:21,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 142 transitions, 1563 flow [2024-06-21 19:20:21,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 142 transitions, 1457 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:21,571 INFO L231 Difference]: Finished difference. Result has 193 places, 119 transitions, 1178 flow [2024-06-21 19:20:21,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=193, PETRI_TRANSITIONS=119} [2024-06-21 19:20:21,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-06-21 19:20:21,571 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 119 transitions, 1178 flow [2024-06-21 19:20:21,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:21,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:21,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:21,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 19:20:21,572 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:21,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash 52176734, now seen corresponding path program 47 times [2024-06-21 19:20:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:21,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149196511] [2024-06-21 19:20:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149196511] [2024-06-21 19:20:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149196511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:23,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048712338] [2024-06-21 19:20:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:23,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:23,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:23,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:23,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 119 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:23,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:23,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:23,646 INFO L124 PetriNetUnfolderBase]: 317/653 cut-off events. [2024-06-21 19:20:23,646 INFO L125 PetriNetUnfolderBase]: For 60040/60040 co-relation queries the response was YES. [2024-06-21 19:20:23,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 653 events. 317/653 cut-off events. For 60040/60040 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3266 event pairs, 59 based on Foata normal form. 10/662 useless extension candidates. Maximal degree in co-relation 3874. Up to 352 conditions per place. [2024-06-21 19:20:23,651 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 79 selfloop transitions, 46 changer transitions 12/139 dead transitions. [2024-06-21 19:20:23,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 139 transitions, 1548 flow [2024-06-21 19:20:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:23,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 19:20:23,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-21 19:20:23,652 INFO L175 Difference]: Start difference. First operand has 193 places, 119 transitions, 1178 flow. Second operand 11 states and 139 transitions. [2024-06-21 19:20:23,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 139 transitions, 1548 flow [2024-06-21 19:20:23,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 139 transitions, 1438 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 19:20:23,747 INFO L231 Difference]: Finished difference. Result has 190 places, 115 transitions, 1132 flow [2024-06-21 19:20:23,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1132, PETRI_PLACES=190, PETRI_TRANSITIONS=115} [2024-06-21 19:20:23,747 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-21 19:20:23,747 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 115 transitions, 1132 flow [2024-06-21 19:20:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:23,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:23,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 19:20:23,748 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:23,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 969460510, now seen corresponding path program 16 times [2024-06-21 19:20:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:23,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70918669] [2024-06-21 19:20:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70918669] [2024-06-21 19:20:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70918669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:25,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:25,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031484445] [2024-06-21 19:20:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:25,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:25,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 115 transitions, 1132 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) [2024-06-21 19:20:25,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:25,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:25,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:25,994 INFO L124 PetriNetUnfolderBase]: 296/610 cut-off events. [2024-06-21 19:20:25,994 INFO L125 PetriNetUnfolderBase]: For 41510/41510 co-relation queries the response was YES. [2024-06-21 19:20:25,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 610 events. 296/610 cut-off events. For 41510/41510 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3008 event pairs, 54 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3722. Up to 350 conditions per place. [2024-06-21 19:20:25,999 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 93 selfloop transitions, 41 changer transitions 0/136 dead transitions. [2024-06-21 19:20:25,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 136 transitions, 1634 flow [2024-06-21 19:20:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:20:25,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:20:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-21 19:20:26,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:20:26,000 INFO L175 Difference]: Start difference. First operand has 190 places, 115 transitions, 1132 flow. Second operand 13 states and 143 transitions. [2024-06-21 19:20:26,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 136 transitions, 1634 flow [2024-06-21 19:20:26,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 136 transitions, 1530 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:26,076 INFO L231 Difference]: Finished difference. Result has 188 places, 116 transitions, 1160 flow [2024-06-21 19:20:26,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1160, PETRI_PLACES=188, PETRI_TRANSITIONS=116} [2024-06-21 19:20:26,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-21 19:20:26,077 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 116 transitions, 1160 flow [2024-06-21 19:20:26,077 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) [2024-06-21 19:20:26,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:26,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:26,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 19:20:26,077 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:26,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash -128239436, now seen corresponding path program 48 times [2024-06-21 19:20:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:26,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442972997] [2024-06-21 19:20:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:26,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:27,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:27,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442972997] [2024-06-21 19:20:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442972997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:27,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785246665] [2024-06-21 19:20:27,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:27,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:27,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:27,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 116 transitions, 1160 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:27,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:27,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:27,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:28,280 INFO L124 PetriNetUnfolderBase]: 312/646 cut-off events. [2024-06-21 19:20:28,280 INFO L125 PetriNetUnfolderBase]: For 53797/53797 co-relation queries the response was YES. [2024-06-21 19:20:28,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3894 conditions, 646 events. 312/646 cut-off events. For 53797/53797 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3239 event pairs, 58 based on Foata normal form. 10/655 useless extension candidates. Maximal degree in co-relation 3806. Up to 371 conditions per place. [2024-06-21 19:20:28,285 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 40 changer transitions 11/136 dead transitions. [2024-06-21 19:20:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 136 transitions, 1524 flow [2024-06-21 19:20:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 19:20:28,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-21 19:20:28,286 INFO L175 Difference]: Start difference. First operand has 188 places, 116 transitions, 1160 flow. Second operand 11 states and 137 transitions. [2024-06-21 19:20:28,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 136 transitions, 1524 flow [2024-06-21 19:20:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 136 transitions, 1393 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:28,378 INFO L231 Difference]: Finished difference. Result has 188 places, 113 transitions, 1088 flow [2024-06-21 19:20:28,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1088, PETRI_PLACES=188, PETRI_TRANSITIONS=113} [2024-06-21 19:20:28,379 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-21 19:20:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 113 transitions, 1088 flow [2024-06-21 19:20:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:28,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 19:20:28,380 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:28,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash -128232492, now seen corresponding path program 17 times [2024-06-21 19:20:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987017650] [2024-06-21 19:20:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:30,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:30,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987017650] [2024-06-21 19:20:30,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987017650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:30,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:30,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459349145] [2024-06-21 19:20:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:30,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:30,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:30,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:30,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 113 transitions, 1088 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) [2024-06-21 19:20:30,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:30,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:30,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:30,648 INFO L124 PetriNetUnfolderBase]: 283/591 cut-off events. [2024-06-21 19:20:30,649 INFO L125 PetriNetUnfolderBase]: For 35694/35694 co-relation queries the response was YES. [2024-06-21 19:20:30,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3419 conditions, 591 events. 283/591 cut-off events. For 35694/35694 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2913 event pairs, 55 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3331. Up to 360 conditions per place. [2024-06-21 19:20:30,652 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 93 selfloop transitions, 35 changer transitions 0/130 dead transitions. [2024-06-21 19:20:30,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 130 transitions, 1412 flow [2024-06-21 19:20:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:30,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 19:20:30,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 19:20:30,654 INFO L175 Difference]: Start difference. First operand has 188 places, 113 transitions, 1088 flow. Second operand 11 states and 126 transitions. [2024-06-21 19:20:30,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 130 transitions, 1412 flow [2024-06-21 19:20:30,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 130 transitions, 1296 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:30,733 INFO L231 Difference]: Finished difference. Result has 186 places, 113 transitions, 1046 flow [2024-06-21 19:20:30,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1046, PETRI_PLACES=186, PETRI_TRANSITIONS=113} [2024-06-21 19:20:30,733 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-21 19:20:30,733 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 113 transitions, 1046 flow [2024-06-21 19:20:30,733 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) [2024-06-21 19:20:30,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:30,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 19:20:30,734 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:30,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 969214556, now seen corresponding path program 49 times [2024-06-21 19:20:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615469346] [2024-06-21 19:20:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:32,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615469346] [2024-06-21 19:20:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615469346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:32,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:32,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:32,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97166246] [2024-06-21 19:20:32,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:32,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:32,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:32,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:20:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 113 transitions, 1046 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:32,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:32,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:20:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:33,067 INFO L124 PetriNetUnfolderBase]: 270/568 cut-off events. [2024-06-21 19:20:33,068 INFO L125 PetriNetUnfolderBase]: For 30241/30241 co-relation queries the response was YES. [2024-06-21 19:20:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 568 events. 270/568 cut-off events. For 30241/30241 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2811 event pairs, 44 based on Foata normal form. 10/577 useless extension candidates. Maximal degree in co-relation 2563. Up to 293 conditions per place. [2024-06-21 19:20:33,071 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 79 selfloop transitions, 41 changer transitions 11/133 dead transitions. [2024-06-21 19:20:33,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 133 transitions, 1384 flow [2024-06-21 19:20:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:20:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:20:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-21 19:20:33,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38974358974358975 [2024-06-21 19:20:33,072 INFO L175 Difference]: Start difference. First operand has 186 places, 113 transitions, 1046 flow. Second operand 13 states and 152 transitions. [2024-06-21 19:20:33,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 133 transitions, 1384 flow [2024-06-21 19:20:33,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 133 transitions, 1291 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:33,122 INFO L231 Difference]: Finished difference. Result has 189 places, 109 transitions, 1014 flow [2024-06-21 19:20:33,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1014, PETRI_PLACES=189, PETRI_TRANSITIONS=109} [2024-06-21 19:20:33,122 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-21 19:20:33,122 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 109 transitions, 1014 flow [2024-06-21 19:20:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:33,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:33,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:33,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 19:20:33,123 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:33,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:33,123 INFO L85 PathProgramCache]: Analyzing trace with hash -863828659, now seen corresponding path program 1 times [2024-06-21 19:20:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435639917] [2024-06-21 19:20:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435639917] [2024-06-21 19:20:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435639917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:35,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:35,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:35,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119766898] [2024-06-21 19:20:35,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:35,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:35,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:35,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:35,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:35,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 109 transitions, 1014 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:35,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:35,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:35,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:35,637 INFO L124 PetriNetUnfolderBase]: 252/538 cut-off events. [2024-06-21 19:20:35,637 INFO L125 PetriNetUnfolderBase]: For 23664/23664 co-relation queries the response was YES. [2024-06-21 19:20:35,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 538 events. 252/538 cut-off events. For 23664/23664 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2685 event pairs, 65 based on Foata normal form. 6/543 useless extension candidates. Maximal degree in co-relation 2399. Up to 349 conditions per place. [2024-06-21 19:20:35,641 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 88 selfloop transitions, 28 changer transitions 7/125 dead transitions. [2024-06-21 19:20:35,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 125 transitions, 1308 flow [2024-06-21 19:20:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 19:20:35,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-21 19:20:35,642 INFO L175 Difference]: Start difference. First operand has 189 places, 109 transitions, 1014 flow. Second operand 10 states and 116 transitions. [2024-06-21 19:20:35,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 125 transitions, 1308 flow [2024-06-21 19:20:35,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 125 transitions, 1196 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 19:20:35,683 INFO L231 Difference]: Finished difference. Result has 179 places, 106 transitions, 935 flow [2024-06-21 19:20:35,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=935, PETRI_PLACES=179, PETRI_TRANSITIONS=106} [2024-06-21 19:20:35,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-21 19:20:35,684 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 106 transitions, 935 flow [2024-06-21 19:20:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:35,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:35,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:35,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 19:20:35,684 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:35,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1340140105, now seen corresponding path program 2 times [2024-06-21 19:20:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930761738] [2024-06-21 19:20:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:37,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930761738] [2024-06-21 19:20:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930761738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:37,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:37,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:37,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41494780] [2024-06-21 19:20:37,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:37,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:37,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:37,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:37,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:38,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:38,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 106 transitions, 935 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:38,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:38,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:38,430 INFO L124 PetriNetUnfolderBase]: 240/511 cut-off events. [2024-06-21 19:20:38,431 INFO L125 PetriNetUnfolderBase]: For 22096/22096 co-relation queries the response was YES. [2024-06-21 19:20:38,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 511 events. 240/511 cut-off events. For 22096/22096 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2494 event pairs, 67 based on Foata normal form. 6/516 useless extension candidates. Maximal degree in co-relation 2193. Up to 345 conditions per place. [2024-06-21 19:20:38,434 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 87 selfloop transitions, 24 changer transitions 12/125 dead transitions. [2024-06-21 19:20:38,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 125 transitions, 1241 flow [2024-06-21 19:20:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 19:20:38,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-21 19:20:38,435 INFO L175 Difference]: Start difference. First operand has 179 places, 106 transitions, 935 flow. Second operand 11 states and 126 transitions. [2024-06-21 19:20:38,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 125 transitions, 1241 flow [2024-06-21 19:20:38,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 125 transitions, 1172 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:38,473 INFO L231 Difference]: Finished difference. Result has 179 places, 102 transitions, 886 flow [2024-06-21 19:20:38,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=886, PETRI_PLACES=179, PETRI_TRANSITIONS=102} [2024-06-21 19:20:38,473 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-21 19:20:38,474 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 102 transitions, 886 flow [2024-06-21 19:20:38,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:38,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:38,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:38,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 19:20:38,474 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:38,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1139050855, now seen corresponding path program 3 times [2024-06-21 19:20:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:38,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974383392] [2024-06-21 19:20:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:38,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:40,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:40,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974383392] [2024-06-21 19:20:40,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974383392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:40,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:40,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923137150] [2024-06-21 19:20:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:40,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:40,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:40,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:40,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 102 transitions, 886 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:40,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:40,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:40,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:40,808 INFO L124 PetriNetUnfolderBase]: 231/492 cut-off events. [2024-06-21 19:20:40,808 INFO L125 PetriNetUnfolderBase]: For 22060/22060 co-relation queries the response was YES. [2024-06-21 19:20:40,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 492 events. 231/492 cut-off events. For 22060/22060 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2365 event pairs, 67 based on Foata normal form. 6/497 useless extension candidates. Maximal degree in co-relation 2106. Up to 335 conditions per place. [2024-06-21 19:20:40,811 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 84 selfloop transitions, 23 changer transitions 11/120 dead transitions. [2024-06-21 19:20:40,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 120 transitions, 1176 flow [2024-06-21 19:20:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-21 19:20:40,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-21 19:20:40,812 INFO L175 Difference]: Start difference. First operand has 179 places, 102 transitions, 886 flow. Second operand 12 states and 129 transitions. [2024-06-21 19:20:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 120 transitions, 1176 flow [2024-06-21 19:20:40,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 120 transitions, 1107 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:20:40,846 INFO L231 Difference]: Finished difference. Result has 173 places, 99 transitions, 847 flow [2024-06-21 19:20:40,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=847, PETRI_PLACES=173, PETRI_TRANSITIONS=99} [2024-06-21 19:20:40,846 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-21 19:20:40,847 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 99 transitions, 847 flow [2024-06-21 19:20:40,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:40,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:40,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:40,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 19:20:40,847 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:40,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2096547307, now seen corresponding path program 4 times [2024-06-21 19:20:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:40,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466688397] [2024-06-21 19:20:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:42,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:42,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466688397] [2024-06-21 19:20:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466688397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:42,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451572591] [2024-06-21 19:20:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:42,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:42,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:42,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:42,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 99 transitions, 847 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:42,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:42,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:42,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:43,199 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2024-06-21 19:20:43,199 INFO L125 PetriNetUnfolderBase]: For 19912/19912 co-relation queries the response was YES. [2024-06-21 19:20:43,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 474 events. 221/474 cut-off events. For 19912/19912 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2250 event pairs, 63 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 2013. Up to 325 conditions per place. [2024-06-21 19:20:43,202 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 24 changer transitions 15/116 dead transitions. [2024-06-21 19:20:43,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 116 transitions, 1127 flow [2024-06-21 19:20:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:20:43,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:20:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 19:20:43,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-21 19:20:43,202 INFO L175 Difference]: Start difference. First operand has 173 places, 99 transitions, 847 flow. Second operand 10 states and 115 transitions. [2024-06-21 19:20:43,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 116 transitions, 1127 flow [2024-06-21 19:20:43,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 116 transitions, 1075 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:43,227 INFO L231 Difference]: Finished difference. Result has 167 places, 93 transitions, 795 flow [2024-06-21 19:20:43,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=167, PETRI_TRANSITIONS=93} [2024-06-21 19:20:43,227 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-21 19:20:43,227 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 93 transitions, 795 flow [2024-06-21 19:20:43,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:43,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:43,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:43,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 19:20:43,228 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:43,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash 260156343, now seen corresponding path program 5 times [2024-06-21 19:20:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:43,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967586190] [2024-06-21 19:20:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:43,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967586190] [2024-06-21 19:20:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967586190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:45,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:20:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354988091] [2024-06-21 19:20:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:45,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:20:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:20:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:20:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:45,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 93 transitions, 795 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:45,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:45,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:45,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:45,814 INFO L124 PetriNetUnfolderBase]: 209/450 cut-off events. [2024-06-21 19:20:45,814 INFO L125 PetriNetUnfolderBase]: For 18578/18578 co-relation queries the response was YES. [2024-06-21 19:20:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 450 events. 209/450 cut-off events. For 18578/18578 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2096 event pairs, 65 based on Foata normal form. 6/455 useless extension candidates. Maximal degree in co-relation 1909. Up to 307 conditions per place. [2024-06-21 19:20:45,818 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 73 selfloop transitions, 16 changer transitions 20/111 dead transitions. [2024-06-21 19:20:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 111 transitions, 1063 flow [2024-06-21 19:20:45,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:45,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 19:20:45,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2024-06-21 19:20:45,819 INFO L175 Difference]: Start difference. First operand has 167 places, 93 transitions, 795 flow. Second operand 12 states and 127 transitions. [2024-06-21 19:20:45,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 111 transitions, 1063 flow [2024-06-21 19:20:45,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 111 transitions, 1003 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 19:20:45,843 INFO L231 Difference]: Finished difference. Result has 162 places, 86 transitions, 719 flow [2024-06-21 19:20:45,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=719, PETRI_PLACES=162, PETRI_TRANSITIONS=86} [2024-06-21 19:20:45,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-21 19:20:45,844 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 86 transitions, 719 flow [2024-06-21 19:20:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:45,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:45,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:45,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 19:20:45,845 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:45,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:45,845 INFO L85 PathProgramCache]: Analyzing trace with hash 239298505, now seen corresponding path program 6 times [2024-06-21 19:20:45,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:45,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279378761] [2024-06-21 19:20:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:47,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279378761] [2024-06-21 19:20:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279378761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300568096] [2024-06-21 19:20:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:47,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:47,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 86 transitions, 719 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:47,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:47,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:47,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:48,426 INFO L124 PetriNetUnfolderBase]: 193/415 cut-off events. [2024-06-21 19:20:48,426 INFO L125 PetriNetUnfolderBase]: For 16571/16571 co-relation queries the response was YES. [2024-06-21 19:20:48,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 415 events. 193/415 cut-off events. For 16571/16571 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1865 event pairs, 58 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1738. Up to 322 conditions per place. [2024-06-21 19:20:48,428 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 72 selfloop transitions, 21 changer transitions 11/106 dead transitions. [2024-06-21 19:20:48,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 106 transitions, 987 flow [2024-06-21 19:20:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:20:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:20:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-06-21 19:20:48,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3404761904761905 [2024-06-21 19:20:48,429 INFO L175 Difference]: Start difference. First operand has 162 places, 86 transitions, 719 flow. Second operand 14 states and 143 transitions. [2024-06-21 19:20:48,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 106 transitions, 987 flow [2024-06-21 19:20:48,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 106 transitions, 933 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-21 19:20:48,453 INFO L231 Difference]: Finished difference. Result has 152 places, 83 transitions, 690 flow [2024-06-21 19:20:48,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=690, PETRI_PLACES=152, PETRI_TRANSITIONS=83} [2024-06-21 19:20:48,453 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-06-21 19:20:48,454 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 83 transitions, 690 flow [2024-06-21 19:20:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:48,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:48,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:48,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 19:20:48,454 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:48,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash 639424333, now seen corresponding path program 7 times [2024-06-21 19:20:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183027086] [2024-06-21 19:20:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183027086] [2024-06-21 19:20:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183027086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:50,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:50,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:50,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425816748] [2024-06-21 19:20:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:50,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:50,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:50,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:50,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 83 transitions, 690 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:50,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:50,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:50,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:50,761 INFO L124 PetriNetUnfolderBase]: 183/397 cut-off events. [2024-06-21 19:20:50,762 INFO L125 PetriNetUnfolderBase]: For 13567/13567 co-relation queries the response was YES. [2024-06-21 19:20:50,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 397 events. 183/397 cut-off events. For 13567/13567 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1764 event pairs, 58 based on Foata normal form. 6/402 useless extension candidates. Maximal degree in co-relation 1644. Up to 312 conditions per place. [2024-06-21 19:20:50,764 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 68 selfloop transitions, 17 changer transitions 13/100 dead transitions. [2024-06-21 19:20:50,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 100 transitions, 936 flow [2024-06-21 19:20:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-21 19:20:50,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-21 19:20:50,765 INFO L175 Difference]: Start difference. First operand has 152 places, 83 transitions, 690 flow. Second operand 12 states and 126 transitions. [2024-06-21 19:20:50,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 100 transitions, 936 flow [2024-06-21 19:20:50,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 100 transitions, 888 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 19:20:50,785 INFO L231 Difference]: Finished difference. Result has 146 places, 79 transitions, 651 flow [2024-06-21 19:20:50,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=146, PETRI_TRANSITIONS=79} [2024-06-21 19:20:50,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-06-21 19:20:50,786 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 79 transitions, 651 flow [2024-06-21 19:20:50,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:50,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:50,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:50,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 19:20:50,786 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:50,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash -831629117, now seen corresponding path program 8 times [2024-06-21 19:20:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034072572] [2024-06-21 19:20:50,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:52,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:52,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034072572] [2024-06-21 19:20:52,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034072572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:52,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:52,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:52,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419793508] [2024-06-21 19:20:52,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:52,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:52,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:52,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:52,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 79 transitions, 651 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:52,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:52,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:52,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:53,073 INFO L124 PetriNetUnfolderBase]: 174/378 cut-off events. [2024-06-21 19:20:53,074 INFO L125 PetriNetUnfolderBase]: For 12457/12457 co-relation queries the response was YES. [2024-06-21 19:20:53,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 378 events. 174/378 cut-off events. For 12457/12457 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1633 event pairs, 56 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 1556. Up to 294 conditions per place. [2024-06-21 19:20:53,076 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 63 selfloop transitions, 14 changer transitions 17/96 dead transitions. [2024-06-21 19:20:53,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 96 transitions, 885 flow [2024-06-21 19:20:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:20:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:20:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 19:20:53,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-21 19:20:53,077 INFO L175 Difference]: Start difference. First operand has 146 places, 79 transitions, 651 flow. Second operand 11 states and 118 transitions. [2024-06-21 19:20:53,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 96 transitions, 885 flow [2024-06-21 19:20:53,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 96 transitions, 843 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:53,094 INFO L231 Difference]: Finished difference. Result has 139 places, 73 transitions, 595 flow [2024-06-21 19:20:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=595, PETRI_PLACES=139, PETRI_TRANSITIONS=73} [2024-06-21 19:20:53,094 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-21 19:20:53,094 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 73 transitions, 595 flow [2024-06-21 19:20:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:53,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:53,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:53,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 19:20:53,095 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:53,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:53,095 INFO L85 PathProgramCache]: Analyzing trace with hash 860290695, now seen corresponding path program 9 times [2024-06-21 19:20:53,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:53,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237597830] [2024-06-21 19:20:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237597830] [2024-06-21 19:20:54,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237597830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:54,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:54,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:20:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788775240] [2024-06-21 19:20:54,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:54,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:20:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:20:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:20:55,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:55,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 73 transitions, 595 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:55,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:55,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:55,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:55,450 INFO L124 PetriNetUnfolderBase]: 160/348 cut-off events. [2024-06-21 19:20:55,451 INFO L125 PetriNetUnfolderBase]: For 10869/10869 co-relation queries the response was YES. [2024-06-21 19:20:55,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 348 events. 160/348 cut-off events. For 10869/10869 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1484 event pairs, 56 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1426. Up to 259 conditions per place. [2024-06-21 19:20:55,452 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 61 selfloop transitions, 15 changer transitions 11/89 dead transitions. [2024-06-21 19:20:55,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 89 transitions, 813 flow [2024-06-21 19:20:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:20:55,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-21 19:20:55,453 INFO L175 Difference]: Start difference. First operand has 139 places, 73 transitions, 595 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:20:55,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 89 transitions, 813 flow [2024-06-21 19:20:55,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 89 transitions, 773 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 19:20:55,467 INFO L231 Difference]: Finished difference. Result has 130 places, 70 transitions, 566 flow [2024-06-21 19:20:55,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=566, PETRI_PLACES=130, PETRI_TRANSITIONS=70} [2024-06-21 19:20:55,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-21 19:20:55,468 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 70 transitions, 566 flow [2024-06-21 19:20:55,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:55,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:55,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:55,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 19:20:55,468 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:55,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1963363681, now seen corresponding path program 10 times [2024-06-21 19:20:55,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:55,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121400355] [2024-06-21 19:20:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:55,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:57,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121400355] [2024-06-21 19:20:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121400355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:57,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:57,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:57,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521146586] [2024-06-21 19:20:57,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:57,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:57,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:57,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:57,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:57,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 70 transitions, 566 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:57,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:57,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:57,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:20:57,817 INFO L124 PetriNetUnfolderBase]: 150/330 cut-off events. [2024-06-21 19:20:57,817 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2024-06-21 19:20:57,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 330 events. 150/330 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1373 event pairs, 56 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1328. Up to 249 conditions per place. [2024-06-21 19:20:57,819 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 58 selfloop transitions, 14 changer transitions 12/86 dead transitions. [2024-06-21 19:20:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 86 transitions, 778 flow [2024-06-21 19:20:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:20:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:20:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 19:20:57,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-21 19:20:57,820 INFO L175 Difference]: Start difference. First operand has 130 places, 70 transitions, 566 flow. Second operand 12 states and 123 transitions. [2024-06-21 19:20:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 86 transitions, 778 flow [2024-06-21 19:20:57,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 86 transitions, 736 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 19:20:57,831 INFO L231 Difference]: Finished difference. Result has 125 places, 66 transitions, 522 flow [2024-06-21 19:20:57,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=125, PETRI_TRANSITIONS=66} [2024-06-21 19:20:57,832 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-21 19:20:57,832 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 66 transitions, 522 flow [2024-06-21 19:20:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:57,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:20:57,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:20:57,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 19:20:57,834 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:20:57,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:20:57,834 INFO L85 PathProgramCache]: Analyzing trace with hash -99362273, now seen corresponding path program 11 times [2024-06-21 19:20:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:20:57,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741845705] [2024-06-21 19:20:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:20:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:20:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:20:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:20:59,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:20:59,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741845705] [2024-06-21 19:20:59,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741845705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:20:59,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:20:59,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:20:59,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181410604] [2024-06-21 19:20:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:20:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:20:59,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:20:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:20:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:20:59,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:20:59,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 66 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:20:59,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:20:59,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:20:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:00,333 INFO L124 PetriNetUnfolderBase]: 141/311 cut-off events. [2024-06-21 19:21:00,333 INFO L125 PetriNetUnfolderBase]: For 7595/7595 co-relation queries the response was YES. [2024-06-21 19:21:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 311 events. 141/311 cut-off events. For 7595/7595 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1248 event pairs, 54 based on Foata normal form. 6/316 useless extension candidates. Maximal degree in co-relation 1238. Up to 231 conditions per place. [2024-06-21 19:21:00,335 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 55 selfloop transitions, 10 changer transitions 15/82 dead transitions. [2024-06-21 19:21:00,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 82 transitions, 722 flow [2024-06-21 19:21:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 19:21:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 19:21:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 19:21:00,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2024-06-21 19:21:00,337 INFO L175 Difference]: Start difference. First operand has 125 places, 66 transitions, 522 flow. Second operand 12 states and 122 transitions. [2024-06-21 19:21:00,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 82 transitions, 722 flow [2024-06-21 19:21:00,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 82 transitions, 681 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:00,346 INFO L231 Difference]: Finished difference. Result has 118 places, 61 transitions, 464 flow [2024-06-21 19:21:00,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=464, PETRI_PLACES=118, PETRI_TRANSITIONS=61} [2024-06-21 19:21:00,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-21 19:21:00,347 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 61 transitions, 464 flow [2024-06-21 19:21:00,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:00,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:00,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:00,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 19:21:00,348 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:00,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:00,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1584491965, now seen corresponding path program 12 times [2024-06-21 19:21:00,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251201873] [2024-06-21 19:21:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251201873] [2024-06-21 19:21:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251201873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:02,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:02,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350117442] [2024-06-21 19:21:02,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:02,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:02,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:21:02,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 61 transitions, 464 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:02,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:02,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:21:02,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:02,907 INFO L124 PetriNetUnfolderBase]: 128/284 cut-off events. [2024-06-21 19:21:02,907 INFO L125 PetriNetUnfolderBase]: For 6399/6399 co-relation queries the response was YES. [2024-06-21 19:21:02,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 284 events. 128/284 cut-off events. For 6399/6399 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1112 event pairs, 50 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1108. Up to 194 conditions per place. [2024-06-21 19:21:02,909 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 51 selfloop transitions, 14 changer transitions 10/77 dead transitions. [2024-06-21 19:21:02,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 77 transitions, 650 flow [2024-06-21 19:21:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 129 transitions. [2024-06-21 19:21:02,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33076923076923076 [2024-06-21 19:21:02,910 INFO L175 Difference]: Start difference. First operand has 118 places, 61 transitions, 464 flow. Second operand 13 states and 129 transitions. [2024-06-21 19:21:02,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 77 transitions, 650 flow [2024-06-21 19:21:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 77 transitions, 613 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 19:21:02,918 INFO L231 Difference]: Finished difference. Result has 110 places, 57 transitions, 430 flow [2024-06-21 19:21:02,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=430, PETRI_PLACES=110, PETRI_TRANSITIONS=57} [2024-06-21 19:21:02,918 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-21 19:21:02,918 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 57 transitions, 430 flow [2024-06-21 19:21:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:02,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:02,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:02,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 19:21:02,919 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:02,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1584232495, now seen corresponding path program 13 times [2024-06-21 19:21:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:02,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70463201] [2024-06-21 19:21:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:04,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70463201] [2024-06-21 19:21:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70463201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:04,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:04,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:04,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987956416] [2024-06-21 19:21:04,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:04,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:04,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:04,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:04,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:05,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:21:05,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 57 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:05,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:05,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:21:05,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:05,648 INFO L124 PetriNetUnfolderBase]: 116/264 cut-off events. [2024-06-21 19:21:05,648 INFO L125 PetriNetUnfolderBase]: For 4905/4905 co-relation queries the response was YES. [2024-06-21 19:21:05,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 264 events. 116/264 cut-off events. For 4905/4905 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 997 event pairs, 52 based on Foata normal form. 6/269 useless extension candidates. Maximal degree in co-relation 1022. Up to 190 conditions per place. [2024-06-21 19:21:05,649 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 43 selfloop transitions, 9 changer transitions 20/74 dead transitions. [2024-06-21 19:21:05,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 74 transitions, 612 flow [2024-06-21 19:21:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 19:21:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 19:21:05,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 137 transitions. [2024-06-21 19:21:05,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3261904761904762 [2024-06-21 19:21:05,650 INFO L175 Difference]: Start difference. First operand has 110 places, 57 transitions, 430 flow. Second operand 14 states and 137 transitions. [2024-06-21 19:21:05,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 74 transitions, 612 flow [2024-06-21 19:21:05,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 74 transitions, 572 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-21 19:21:05,656 INFO L231 Difference]: Finished difference. Result has 106 places, 47 transitions, 334 flow [2024-06-21 19:21:05,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=334, PETRI_PLACES=106, PETRI_TRANSITIONS=47} [2024-06-21 19:21:05,657 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-21 19:21:05,657 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 47 transitions, 334 flow [2024-06-21 19:21:05,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:05,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:05,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:05,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 19:21:05,657 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:05,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:05,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1269244595, now seen corresponding path program 14 times [2024-06-21 19:21:05,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:05,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684228846] [2024-06-21 19:21:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:07,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684228846] [2024-06-21 19:21:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684228846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 19:21:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154095549] [2024-06-21 19:21:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 19:21:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 19:21:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-21 19:21:07,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:21:07,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 47 transitions, 334 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:07,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:07,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:21:07,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:07,974 INFO L124 PetriNetUnfolderBase]: 100/232 cut-off events. [2024-06-21 19:21:07,974 INFO L125 PetriNetUnfolderBase]: For 4207/4207 co-relation queries the response was YES. [2024-06-21 19:21:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 232 events. 100/232 cut-off events. For 4207/4207 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 817 event pairs, 54 based on Foata normal form. 6/237 useless extension candidates. Maximal degree in co-relation 877. Up to 164 conditions per place. [2024-06-21 19:21:07,975 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 34 selfloop transitions, 3 changer transitions 25/64 dead transitions. [2024-06-21 19:21:07,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 64 transitions, 496 flow [2024-06-21 19:21:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:21:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:21:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-06-21 19:21:07,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31794871794871793 [2024-06-21 19:21:07,976 INFO L175 Difference]: Start difference. First operand has 106 places, 47 transitions, 334 flow. Second operand 13 states and 124 transitions. [2024-06-21 19:21:07,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 64 transitions, 496 flow [2024-06-21 19:21:07,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 64 transitions, 459 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 19:21:07,980 INFO L231 Difference]: Finished difference. Result has 92 places, 38 transitions, 259 flow [2024-06-21 19:21:07,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=259, PETRI_PLACES=92, PETRI_TRANSITIONS=38} [2024-06-21 19:21:07,981 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-21 19:21:07,981 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 38 transitions, 259 flow [2024-06-21 19:21:07,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:07,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:07,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:07,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 19:21:07,981 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:07,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:07,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1142075553, now seen corresponding path program 15 times [2024-06-21 19:21:07,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124465413] [2024-06-21 19:21:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:07,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:10,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:10,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124465413] [2024-06-21 19:21:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124465413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734310140] [2024-06-21 19:21:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:10,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:21:10,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 38 transitions, 259 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:10,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:10,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:21:10,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:10,838 INFO L124 PetriNetUnfolderBase]: 82/190 cut-off events. [2024-06-21 19:21:10,839 INFO L125 PetriNetUnfolderBase]: For 3315/3319 co-relation queries the response was YES. [2024-06-21 19:21:10,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 190 events. 82/190 cut-off events. For 3315/3319 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 613 event pairs, 24 based on Foata normal form. 7/196 useless extension candidates. Maximal degree in co-relation 700. Up to 76 conditions per place. [2024-06-21 19:21:10,839 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 14 changer transitions 9/50 dead transitions. [2024-06-21 19:21:10,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 50 transitions, 383 flow [2024-06-21 19:21:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:21:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:21:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:21:10,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:21:10,840 INFO L175 Difference]: Start difference. First operand has 92 places, 38 transitions, 259 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:21:10,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 50 transitions, 383 flow [2024-06-21 19:21:10,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 50 transitions, 351 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 19:21:10,843 INFO L231 Difference]: Finished difference. Result has 73 places, 33 transitions, 217 flow [2024-06-21 19:21:10,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=217, PETRI_PLACES=73, PETRI_TRANSITIONS=33} [2024-06-21 19:21:10,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-21 19:21:10,844 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 33 transitions, 217 flow [2024-06-21 19:21:10,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:10,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:10,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:10,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 19:21:10,844 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:10,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:10,845 INFO L85 PathProgramCache]: Analyzing trace with hash -127397363, now seen corresponding path program 16 times [2024-06-21 19:21:10,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:10,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305675869] [2024-06-21 19:21:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305675869] [2024-06-21 19:21:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305675869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:13,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703362279] [2024-06-21 19:21:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:13,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:21:13,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 33 transitions, 217 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:13,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:13,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:21:13,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:13,442 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-06-21 19:21:13,442 INFO L125 PetriNetUnfolderBase]: For 1824/1824 co-relation queries the response was YES. [2024-06-21 19:21:13,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 154 events. 67/154 cut-off events. For 1824/1824 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 453 event pairs, 19 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 550. Up to 72 conditions per place. [2024-06-21 19:21:13,443 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 22 selfloop transitions, 8 changer transitions 14/46 dead transitions. [2024-06-21 19:21:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 46 transitions, 333 flow [2024-06-21 19:21:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 19:21:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 19:21:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 19:21:13,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-21 19:21:13,444 INFO L175 Difference]: Start difference. First operand has 73 places, 33 transitions, 217 flow. Second operand 10 states and 110 transitions. [2024-06-21 19:21:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 46 transitions, 333 flow [2024-06-21 19:21:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 265 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-21 19:21:13,446 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 145 flow [2024-06-21 19:21:13,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=145, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-21 19:21:13,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-21 19:21:13,447 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 145 flow [2024-06-21 19:21:13,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:13,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:13,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:13,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 19:21:13,447 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:13,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1623057227, now seen corresponding path program 17 times [2024-06-21 19:21:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143664288] [2024-06-21 19:21:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:15,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:15,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143664288] [2024-06-21 19:21:15,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143664288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:15,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:21:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608958011] [2024-06-21 19:21:15,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:21:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:21:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:21:15,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:21:15,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 145 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:15,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:15,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:21:15,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:16,098 INFO L124 PetriNetUnfolderBase]: 57/132 cut-off events. [2024-06-21 19:21:16,098 INFO L125 PetriNetUnfolderBase]: For 1734/1734 co-relation queries the response was YES. [2024-06-21 19:21:16,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 132 events. 57/132 cut-off events. For 1734/1734 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 15 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 440. Up to 62 conditions per place. [2024-06-21 19:21:16,099 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 20 selfloop transitions, 8 changer transitions 12/42 dead transitions. [2024-06-21 19:21:16,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 42 transitions, 255 flow [2024-06-21 19:21:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 19:21:16,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-21 19:21:16,100 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 145 flow. Second operand 11 states and 116 transitions. [2024-06-21 19:21:16,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 42 transitions, 255 flow [2024-06-21 19:21:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 229 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 19:21:16,101 INFO L231 Difference]: Finished difference. Result has 57 places, 24 transitions, 119 flow [2024-06-21 19:21:16,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=119, PETRI_PLACES=57, PETRI_TRANSITIONS=24} [2024-06-21 19:21:16,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-21 19:21:16,102 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 24 transitions, 119 flow [2024-06-21 19:21:16,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:16,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:16,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:16,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 19:21:16,102 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:16,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash -11753903, now seen corresponding path program 18 times [2024-06-21 19:21:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143119681] [2024-06-21 19:21:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143119681] [2024-06-21 19:21:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143119681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:18,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 19:21:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206365726] [2024-06-21 19:21:18,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:18,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 19:21:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 19:21:18,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 19:21:18,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-21 19:21:18,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 24 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:18,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:18,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-21 19:21:18,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:18,612 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2024-06-21 19:21:18,612 INFO L125 PetriNetUnfolderBase]: For 1018/1018 co-relation queries the response was YES. [2024-06-21 19:21:18,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 113 events. 48/113 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 271 event pairs, 15 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 364. Up to 52 conditions per place. [2024-06-21 19:21:18,613 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 17 selfloop transitions, 7 changer transitions 11/37 dead transitions. [2024-06-21 19:21:18,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 37 transitions, 217 flow [2024-06-21 19:21:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-21 19:21:18,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-06-21 19:21:18,614 INFO L175 Difference]: Start difference. First operand has 57 places, 24 transitions, 119 flow. Second operand 11 states and 102 transitions. [2024-06-21 19:21:18,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 37 transitions, 217 flow [2024-06-21 19:21:18,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 193 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 19:21:18,615 INFO L231 Difference]: Finished difference. Result has 51 places, 21 transitions, 98 flow [2024-06-21 19:21:18,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=21} [2024-06-21 19:21:18,615 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-21 19:21:18,615 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 21 transitions, 98 flow [2024-06-21 19:21:18,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:18,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:21:18,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:18,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 19:21:18,616 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 19:21:18,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:21:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -11494433, now seen corresponding path program 19 times [2024-06-21 19:21:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:21:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447542353] [2024-06-21 19:21:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:21:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:21:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:21:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:21:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:21:20,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447542353] [2024-06-21 19:21:20,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447542353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:21:20,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:21:20,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 19:21:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948378536] [2024-06-21 19:21:20,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:21:20,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 19:21:20,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:21:20,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 19:21:20,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 19:21:20,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-21 19:21:20,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 21 transitions, 98 flow. Second operand has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:20,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:21:20,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-21 19:21:20,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:21:21,197 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-21 19:21:21,198 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-06-21 19:21:21,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 62 events. 23/62 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 162. Up to 24 conditions per place. [2024-06-21 19:21:21,198 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-21 19:21:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 29 transitions, 148 flow [2024-06-21 19:21:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 19:21:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 19:21:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-21 19:21:21,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-21 19:21:21,199 INFO L175 Difference]: Start difference. First operand has 51 places, 21 transitions, 98 flow. Second operand 11 states and 105 transitions. [2024-06-21 19:21:21,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 29 transitions, 148 flow [2024-06-21 19:21:21,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-21 19:21:21,200 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2024-06-21 19:21:21,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2024-06-21 19:21:21,200 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-21 19:21:21,200 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2024-06-21 19:21:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.23076923076923) internal successors, (107), 13 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:21:21,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 19:21:21,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 19:21:21,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 19:21:21,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 19:21:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 19:21:21,203 INFO L445 BasicCegarLoop]: Path program histogram: [49, 25, 22, 19, 17, 14, 11, 6, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:21:21,206 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:21:21,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:21:21,209 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 19:21:21,209 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 19:21:21,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:21:21 BasicIcfg [2024-06-21 19:21:21,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:21:21,210 INFO L158 Benchmark]: Toolchain (without parser) took 427236.32ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 106.2MB in the beginning and 820.8MB in the end (delta: -714.6MB). Peak memory consumption was 663.4MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,213 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 144.7MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:21:21,213 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:21:21,213 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.57ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 73.9MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.39ms. Allocated memory is still 144.7MB. Free memory was 73.3MB in the beginning and 67.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,213 INFO L158 Benchmark]: Boogie Preprocessor took 98.45ms. Allocated memory is still 144.7MB. Free memory was 67.0MB in the beginning and 62.7MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,214 INFO L158 Benchmark]: RCFGBuilder took 744.35ms. Allocated memory is still 144.7MB. Free memory was 62.7MB in the beginning and 106.7MB in the end (delta: -43.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,214 INFO L158 Benchmark]: TraceAbstraction took 425754.06ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 106.7MB in the beginning and 820.8MB in the end (delta: -714.1MB). Peak memory consumption was 663.6MB. Max. memory is 16.1GB. [2024-06-21 19:21:21,215 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 0.16ms. Allocated memory is still 144.7MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.57ms. Allocated memory is still 144.7MB. Free memory was 106.2MB in the beginning and 73.9MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.39ms. Allocated memory is still 144.7MB. Free memory was 73.3MB in the beginning and 67.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 98.45ms. Allocated memory is still 144.7MB. Free memory was 67.0MB in the beginning and 62.7MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 744.35ms. Allocated memory is still 144.7MB. Free memory was 62.7MB in the beginning and 106.7MB in the end (delta: -43.9MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * TraceAbstraction took 425754.06ms. Allocated memory was 144.7MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 106.7MB in the beginning and 820.8MB in the end (delta: -714.1MB). Peak memory consumption was 663.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 48 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: 425.7s, OverallIterations: 200, TraceHistogramMax: 1, PathProgramHistogramMax: 49, EmptinessCheckTime: 0.0s, AutomataDifference: 131.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10289 SdHoareTripleChecker+Valid, 51.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8569 mSDsluCounter, 6134 SdHoareTripleChecker+Invalid, 45.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5002 mSDsCounter, 3034 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70927 IncrementalHoareTripleChecker+Invalid, 73961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3034 mSolverCounterUnsat, 1132 mSDtfsCounter, 70927 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2166 GetRequests, 1 SyntacticMatches, 7 SemanticMatches, 2158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2997 ImplicationChecksByTransitivity, 62.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3021occurred in iteration=105, InterpolantAutomatonStates: 1960, 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: 0.2s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 289.4s InterpolantComputationTime, 3166 NumberOfCodeBlocks, 3166 NumberOfCodeBlocksAsserted, 200 NumberOfCheckSat, 2966 ConstructedInterpolants, 0 QuantifiedInterpolants, 141160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 200 InterpolantComputations, 200 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! [2024-06-21 19:21:21,319 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