./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:36:36,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:36:36,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:36:36,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:36:36,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:36:36,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:36:36,718 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:36:36,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:36:36,719 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:36:36,719 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:36:36,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:36:36,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:36:36,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:36:36,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:36:36,721 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:36:36,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:36:36,722 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:36:36,722 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:36:36,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:36:36,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:36:36,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:36:36,727 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:36:36,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:36:36,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:36:36,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:36:36,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:36:36,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:36:36,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:36:36,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:36:36,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:36:36,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:36:36,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:36:36,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:36:36,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:36:36,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:36:36,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:36:36,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:36:36,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:36:36,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:36:36,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:36:36,736 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:36:36,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:36:36,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:36:36,737 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:36:36,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:36:36,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:36:36,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:36:36,998 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:36:37,000 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:36:37,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.oepc.yml/witness.yml [2024-06-27 23:36:37,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:36:37,116 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:36:37,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 23:36:38,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:36:38,585 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:36:38,586 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-27 23:36:38,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d79d036a/d547fa3ac7b34ea6b09573b828cf11f2/FLAGed51ffab2 [2024-06-27 23:36:38,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d79d036a/d547fa3ac7b34ea6b09573b828cf11f2 [2024-06-27 23:36:38,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:36:38,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:36:38,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:36:38,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:36:38,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:36:38,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:36:37" (1/2) ... [2024-06-27 23:36:38,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e12cf8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:36:38, skipping insertion in model container [2024-06-27 23:36:38,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:36:37" (1/2) ... [2024-06-27 23:36:38,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6afbef4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:36:38, skipping insertion in model container [2024-06-27 23:36:38,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:36:38" (2/2) ... [2024-06-27 23:36:38,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e12cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:38, skipping insertion in model container [2024-06-27 23:36:38,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:36:38" (2/2) ... [2024-06-27 23:36:38,641 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:36:38,669 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:36:38,670 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 23:36:38,671 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a$mem_tmp >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$flush_delayed) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$r_buff0_thd1 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff0_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd0) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff1 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$r_buff1_thd2) + (long long )a$w_buff0_used >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0 >= 0LL) && (0LL - (long long )a$read_delayed) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff0_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$r_buff1_thd1) + (long long )a$w_buff0_used >= 0LL) && (1LL - (long long )a$w_buff0) + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )a$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )a$w_buff0_used >= 0LL) && (long long )a + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a + (long long )a$w_buff0 >= 0LL) && (long long )a + (long long )a$w_buff0_used >= 0LL) && (long long )a$flush_delayed + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$flush_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$mem_tmp + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0 >= 0LL) && (long long )a$mem_tmp + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$r_buff0_thd1 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff0_thd1 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )x >= 0LL) && (long long )a$r_buff0_thd1 + (long long )y >= 0LL) && (long long )a$r_buff0_thd1 + (long long )z >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice0 >= 0LL) && (long long )a$r_buff0_thd1 + (long long )weak$$choice2 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd1 + (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff1_thd2 + (long long )a$w_buff0_used >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0 >= 0LL) && (long long )a$read_delayed + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0 + (long long )x >= 0LL) && (long long )a$w_buff0 + (long long )y >= 0LL) && (long long )a$w_buff0 + (long long )z >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0 + (long long )weak$$choice2 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0_used + (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used + (long long )main$tmp_guard1 >= 0LL) && (long long )a$w_buff0_used + (long long )x >= 0LL) && (long long )a$w_buff0_used + (long long )y >= 0LL) && (long long )a$w_buff0_used + (long long )z >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice0 >= 0LL) && (long long )a$w_buff0_used + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )a$w_buff0_used) - (long long )a$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )a$mem_tmp >= 0LL) && (long long )a - (long long )a$mem_tmp >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff0_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$r_buff1_thd2 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$read_delayed >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff0_used >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff0_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1 >= 0LL) && (long long )a$r_buff1_thd1 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff0_used >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1 >= 0LL) && (long long )a$w_buff0 - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff0_used - (long long )a$w_buff1_used >= 0LL) && (long long )a$w_buff1 - (long long )a$w_buff1_used >= 0LL) [2024-06-27 23:36:38,671 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:36:38,671 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-27 23:36:38,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:36:39,084 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:36:39,097 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:36:39,307 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:36:39,347 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:36:39,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39 WrapperNode [2024-06-27 23:36:39,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:36:39,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:36:39,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:36:39,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:36:39,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,434 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 123 [2024-06-27 23:36:39,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:36:39,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:36:39,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:36:39,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:36:39,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,500 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:36:39,501 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,501 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:36:39,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:36:39,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:36:39,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:36:39,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (1/1) ... [2024-06-27 23:36:39,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:36:39,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:36:39,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:36:39,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:36:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:36:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:36:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:36:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:36:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:36:39,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:36:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:36:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:36:39,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:36:39,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:36:39,636 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:36:39,764 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:36:39,766 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:36:40,249 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:36:40,249 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:36:40,446 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:36:40,447 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:36:40,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:36:40 BoogieIcfgContainer [2024-06-27 23:36:40,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:36:40,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:36:40,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:36:40,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:36:40,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:36:37" (1/4) ... [2024-06-27 23:36:40,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a53bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:36:40, skipping insertion in model container [2024-06-27 23:36:40,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:36:38" (2/4) ... [2024-06-27 23:36:40,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a53bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:36:40, skipping insertion in model container [2024-06-27 23:36:40,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:36:39" (3/4) ... [2024-06-27 23:36:40,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a53bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:36:40, skipping insertion in model container [2024-06-27 23:36:40,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:36:40" (4/4) ... [2024-06-27 23:36:40,461 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2024-06-27 23:36:40,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:36:40,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:36:40,479 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:36:40,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:36:40,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-27 23:36:40,596 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-27 23:36:40,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:36:40,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:36:40,600 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-27 23:36:40,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-27 23:36:40,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:36:40,625 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;@218a9531, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:36:40,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:36:40,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:36:40,631 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:36:40,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:36:40,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:40,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:36:40,633 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)] === [2024-06-27 23:36:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 341599561, now seen corresponding path program 1 times [2024-06-27 23:36:40,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:40,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666335248] [2024-06-27 23:36:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:40,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:42,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666335248] [2024-06-27 23:36:42,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666335248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:42,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:42,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:36:42,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741301440] [2024-06-27 23:36:42,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:36:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:36:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:36:42,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-27 23:36:42,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:42,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:42,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-27 23:36:42,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:42,592 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-27 23:36:42,592 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:36:42,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 359 events. 189/359 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1442 event pairs, 115 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 704. Up to 333 conditions per place. [2024-06-27 23:36:42,599 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-27 23:36:42,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 121 flow [2024-06-27 23:36:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:36:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:36:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-27 23:36:42,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-27 23:36:42,612 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 60 transitions. [2024-06-27 23:36:42,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 121 flow [2024-06-27 23:36:42,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:36:42,617 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-27 23:36:42,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-27 23:36:42,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-27 23:36:42,623 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-27 23:36:42,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:42,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:42,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:42,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:36:42,624 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)] === [2024-06-27 23:36:42,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1860020146, now seen corresponding path program 1 times [2024-06-27 23:36:42,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:42,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346603318] [2024-06-27 23:36:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:42,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:43,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:43,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346603318] [2024-06-27 23:36:43,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346603318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:43,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:43,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:36:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504070663] [2024-06-27 23:36:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:36:43,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:36:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:36:43,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-27 23:36:43,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:43,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:43,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-27 23:36:43,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:44,115 INFO L124 PetriNetUnfolderBase]: 186/354 cut-off events. [2024-06-27 23:36:44,116 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-27 23:36:44,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 354 events. 186/354 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1414 event pairs, 94 based on Foata normal form. 2/348 useless extension candidates. Maximal degree in co-relation 784. Up to 319 conditions per place. [2024-06-27 23:36:44,122 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-27 23:36:44,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 163 flow [2024-06-27 23:36:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:36:44,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:36:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-27 23:36:44,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 23:36:44,126 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 77 transitions. [2024-06-27 23:36:44,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 163 flow [2024-06-27 23:36:44,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:36:44,131 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-27 23:36:44,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-27 23:36:44,133 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-27 23:36:44,133 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-27 23:36:44,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:44,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:44,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:44,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:36:44,135 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)] === [2024-06-27 23:36:44,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:44,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1826050970, now seen corresponding path program 1 times [2024-06-27 23:36:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:44,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876073502] [2024-06-27 23:36:44,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:44,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:45,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876073502] [2024-06-27 23:36:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876073502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:45,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:45,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:36:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65956190] [2024-06-27 23:36:45,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:45,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:36:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:36:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:36:45,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:36:45,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:45,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:45,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:36:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:45,779 INFO L124 PetriNetUnfolderBase]: 219/412 cut-off events. [2024-06-27 23:36:45,779 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-27 23:36:45,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 412 events. 219/412 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1631 event pairs, 99 based on Foata normal form. 2/411 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2024-06-27 23:36:45,782 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-27 23:36:45,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 213 flow [2024-06-27 23:36:45,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:36:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:36:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-27 23:36:45,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-27 23:36:45,787 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 90 transitions. [2024-06-27 23:36:45,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 213 flow [2024-06-27 23:36:45,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:36:45,790 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-27 23:36:45,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-27 23:36:45,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-27 23:36:45,792 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-27 23:36:45,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:45,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:45,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:36:45,793 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)] === [2024-06-27 23:36:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash 468244615, now seen corresponding path program 1 times [2024-06-27 23:36:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:45,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949448689] [2024-06-27 23:36:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:46,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949448689] [2024-06-27 23:36:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949448689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:46,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:46,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257985989] [2024-06-27 23:36:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:46,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:46,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:46,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:47,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:36:47,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2024-06-27 23:36:47,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:47,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:36:47,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:47,178 INFO L124 PetriNetUnfolderBase]: 216/409 cut-off events. [2024-06-27 23:36:47,179 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-27 23:36:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 409 events. 216/409 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1609 event pairs, 78 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1084. Up to 352 conditions per place. [2024-06-27 23:36:47,182 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-27 23:36:47,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 261 flow [2024-06-27 23:36:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:47,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 23:36:47,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-27 23:36:47,185 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 106 transitions. [2024-06-27 23:36:47,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 261 flow [2024-06-27 23:36:47,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:36:47,187 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-27 23:36:47,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-27 23:36:47,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-27 23:36:47,188 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-27 23:36:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2024-06-27 23:36:47,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:47,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:47,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:36:47,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:36:47,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 817225040, now seen corresponding path program 1 times [2024-06-27 23:36:47,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:47,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100628928] [2024-06-27 23:36:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100628928] [2024-06-27 23:36:48,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100628928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:48,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:48,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:36:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500708277] [2024-06-27 23:36:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:36:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:36:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:36:48,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:36:48,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:48,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:48,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:36:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:49,212 INFO L124 PetriNetUnfolderBase]: 229/441 cut-off events. [2024-06-27 23:36:49,212 INFO L125 PetriNetUnfolderBase]: For 704/707 co-relation queries the response was YES. [2024-06-27 23:36:49,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 441 events. 229/441 cut-off events. For 704/707 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1753 event pairs, 157 based on Foata normal form. 4/444 useless extension candidates. Maximal degree in co-relation 1241. Up to 402 conditions per place. [2024-06-27 23:36:49,216 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 28 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-27 23:36:49,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 245 flow [2024-06-27 23:36:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:36:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:36:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-06-27 23:36:49,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-27 23:36:49,219 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 5 states and 72 transitions. [2024-06-27 23:36:49,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 245 flow [2024-06-27 23:36:49,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 222 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:36:49,225 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 172 flow [2024-06-27 23:36:49,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-27 23:36:49,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2024-06-27 23:36:49,231 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 172 flow [2024-06-27 23:36:49,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:49,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:49,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:49,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:36:49,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:36:49,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:49,234 INFO L85 PathProgramCache]: Analyzing trace with hash -988447706, now seen corresponding path program 1 times [2024-06-27 23:36:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:49,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116183326] [2024-06-27 23:36:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:49,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:50,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:50,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116183326] [2024-06-27 23:36:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116183326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:50,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:50,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:50,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106586139] [2024-06-27 23:36:50,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:50,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:50,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:50,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:50,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:51,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:36:51,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-27 23:36:51,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:51,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:36:51,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:51,265 INFO L124 PetriNetUnfolderBase]: 244/454 cut-off events. [2024-06-27 23:36:51,265 INFO L125 PetriNetUnfolderBase]: For 858/862 co-relation queries the response was YES. [2024-06-27 23:36:51,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1380 conditions, 454 events. 244/454 cut-off events. For 858/862 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1740 event pairs, 61 based on Foata normal form. 6/460 useless extension candidates. Maximal degree in co-relation 1360. Up to 382 conditions per place. [2024-06-27 23:36:51,270 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 46 selfloop transitions, 14 changer transitions 0/64 dead transitions. [2024-06-27 23:36:51,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 378 flow [2024-06-27 23:36:51,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:36:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:36:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 23:36:51,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2024-06-27 23:36:51,273 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 172 flow. Second operand 8 states and 131 transitions. [2024-06-27 23:36:51,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 378 flow [2024-06-27 23:36:51,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:36:51,276 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 225 flow [2024-06-27 23:36:51,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 23:36:51,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2024-06-27 23:36:51,279 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 225 flow [2024-06-27 23:36:51,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2024-06-27 23:36:51,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:51,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:51,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:36:51,280 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)] === [2024-06-27 23:36:51,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash -453701316, now seen corresponding path program 1 times [2024-06-27 23:36:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:51,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256644771] [2024-06-27 23:36:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:53,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:53,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256644771] [2024-06-27 23:36:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256644771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:53,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:53,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:53,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780631075] [2024-06-27 23:36:53,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:53,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:53,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:53,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:36:53,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:53,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:53,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:36:53,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:53,591 INFO L124 PetriNetUnfolderBase]: 257/471 cut-off events. [2024-06-27 23:36:53,591 INFO L125 PetriNetUnfolderBase]: For 1410/1415 co-relation queries the response was YES. [2024-06-27 23:36:53,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 471 events. 257/471 cut-off events. For 1410/1415 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1805 event pairs, 135 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 1576. Up to 449 conditions per place. [2024-06-27 23:36:53,595 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 34 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-27 23:36:53,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 333 flow [2024-06-27 23:36:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-27 23:36:53,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:36:53,596 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 225 flow. Second operand 6 states and 78 transitions. [2024-06-27 23:36:53,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 333 flow [2024-06-27 23:36:53,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 302 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:36:53,599 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 233 flow [2024-06-27 23:36:53,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=194, 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=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-27 23:36:53,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-27 23:36:53,600 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 233 flow [2024-06-27 23:36:53,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:53,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:53,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:36:53,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:36:53,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash -975313512, now seen corresponding path program 1 times [2024-06-27 23:36:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761832999] [2024-06-27 23:36:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761832999] [2024-06-27 23:36:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761832999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:36:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736968754] [2024-06-27 23:36:55,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:36:55,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:36:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:36:55,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:36:55,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 233 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:55,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:55,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:36:55,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:55,786 INFO L124 PetriNetUnfolderBase]: 249/460 cut-off events. [2024-06-27 23:36:55,786 INFO L125 PetriNetUnfolderBase]: For 1722/1726 co-relation queries the response was YES. [2024-06-27 23:36:55,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 460 events. 249/460 cut-off events. For 1722/1726 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1755 event pairs, 46 based on Foata normal form. 8/468 useless extension candidates. Maximal degree in co-relation 1591. Up to 365 conditions per place. [2024-06-27 23:36:55,789 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 47 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-27 23:36:55,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 417 flow [2024-06-27 23:36:55,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:36:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:36:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 23:36:55,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-27 23:36:55,791 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 233 flow. Second operand 9 states and 141 transitions. [2024-06-27 23:36:55,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 417 flow [2024-06-27 23:36:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 398 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:36:55,794 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 236 flow [2024-06-27 23:36:55,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2024-06-27 23:36:55,795 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-27 23:36:55,795 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 236 flow [2024-06-27 23:36:55,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:55,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:55,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:55,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:36:55,796 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)] === [2024-06-27 23:36:55,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:55,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1848514513, now seen corresponding path program 1 times [2024-06-27 23:36:55,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069643344] [2024-06-27 23:36:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:57,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:57,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069643344] [2024-06-27 23:36:57,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069643344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:57,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:57,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:57,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522991171] [2024-06-27 23:36:57,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:57,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:57,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:36:57,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:57,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:57,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:36:57,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:57,796 INFO L124 PetriNetUnfolderBase]: 244/459 cut-off events. [2024-06-27 23:36:57,796 INFO L125 PetriNetUnfolderBase]: For 2165/2169 co-relation queries the response was YES. [2024-06-27 23:36:57,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 459 events. 244/459 cut-off events. For 2165/2169 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1762 event pairs, 113 based on Foata normal form. 5/464 useless extension candidates. Maximal degree in co-relation 1666. Up to 395 conditions per place. [2024-06-27 23:36:57,799 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-27 23:36:57,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 418 flow [2024-06-27 23:36:57,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-27 23:36:57,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 23:36:57,801 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 236 flow. Second operand 6 states and 91 transitions. [2024-06-27 23:36:57,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 418 flow [2024-06-27 23:36:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 376 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:36:57,805 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 277 flow [2024-06-27 23:36:57,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 23:36:57,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-06-27 23:36:57,806 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 277 flow [2024-06-27 23:36:57,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:57,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:57,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:57,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:36:57,807 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)] === [2024-06-27 23:36:57,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -626002287, now seen corresponding path program 2 times [2024-06-27 23:36:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257438516] [2024-06-27 23:36:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:57,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257438516] [2024-06-27 23:36:59,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257438516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:59,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:59,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:59,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65174825] [2024-06-27 23:36:59,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:59,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:59,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:59,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:59,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:36:59,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:59,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:59,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:36:59,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:59,623 INFO L124 PetriNetUnfolderBase]: 247/464 cut-off events. [2024-06-27 23:36:59,624 INFO L125 PetriNetUnfolderBase]: For 2696/2700 co-relation queries the response was YES. [2024-06-27 23:36:59,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 464 events. 247/464 cut-off events. For 2696/2700 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1793 event pairs, 119 based on Foata normal form. 5/469 useless extension candidates. Maximal degree in co-relation 1771. Up to 408 conditions per place. [2024-06-27 23:36:59,628 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 40 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-27 23:36:59,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 442 flow [2024-06-27 23:36:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 23:36:59,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 23:36:59,629 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 277 flow. Second operand 6 states and 86 transitions. [2024-06-27 23:36:59,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 442 flow [2024-06-27 23:36:59,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 431 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 23:36:59,634 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 328 flow [2024-06-27 23:36:59,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=328, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-27 23:36:59,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-27 23:36:59,636 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 328 flow [2024-06-27 23:36:59,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:59,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:59,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:59,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:36:59,636 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)] === [2024-06-27 23:36:59,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:59,637 INFO L85 PathProgramCache]: Analyzing trace with hash -606967047, now seen corresponding path program 3 times [2024-06-27 23:36:59,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706121440] [2024-06-27 23:36:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706121440] [2024-06-27 23:37:00,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706121440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:00,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:00,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:00,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662472339] [2024-06-27 23:37:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:00,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:00,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:00,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:01,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:01,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:01,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:01,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:01,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:01,286 INFO L124 PetriNetUnfolderBase]: 263/479 cut-off events. [2024-06-27 23:37:01,286 INFO L125 PetriNetUnfolderBase]: For 3137/3141 co-relation queries the response was YES. [2024-06-27 23:37:01,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 479 events. 263/479 cut-off events. For 3137/3141 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1789 event pairs, 127 based on Foata normal form. 5/484 useless extension candidates. Maximal degree in co-relation 1905. Up to 455 conditions per place. [2024-06-27 23:37:01,290 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 43 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-27 23:37:01,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 446 flow [2024-06-27 23:37:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:37:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:37:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 23:37:01,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:37:01,292 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 328 flow. Second operand 6 states and 77 transitions. [2024-06-27 23:37:01,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 446 flow [2024-06-27 23:37:01,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 418 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:01,297 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 325 flow [2024-06-27 23:37:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-27 23:37:01,298 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2024-06-27 23:37:01,298 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 325 flow [2024-06-27 23:37:01,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:01,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:37:01,299 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)] === [2024-06-27 23:37:01,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -625725457, now seen corresponding path program 1 times [2024-06-27 23:37:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960736146] [2024-06-27 23:37:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:03,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:03,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960736146] [2024-06-27 23:37:03,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960736146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:03,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:03,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549093655] [2024-06-27 23:37:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:03,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:03,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:03,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:03,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:03,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:03,537 INFO L124 PetriNetUnfolderBase]: 256/469 cut-off events. [2024-06-27 23:37:03,538 INFO L125 PetriNetUnfolderBase]: For 3653/3657 co-relation queries the response was YES. [2024-06-27 23:37:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1920 conditions, 469 events. 256/469 cut-off events. For 3653/3657 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1737 event pairs, 124 based on Foata normal form. 7/476 useless extension candidates. Maximal degree in co-relation 1887. Up to 437 conditions per place. [2024-06-27 23:37:03,541 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 46 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-27 23:37:03,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 62 transitions, 469 flow [2024-06-27 23:37:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 23:37:03,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-27 23:37:03,543 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 325 flow. Second operand 7 states and 89 transitions. [2024-06-27 23:37:03,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 62 transitions, 469 flow [2024-06-27 23:37:03,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 450 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:03,548 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 351 flow [2024-06-27 23:37:03,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-27 23:37:03,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-27 23:37:03,549 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 351 flow [2024-06-27 23:37:03,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:03,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:03,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:03,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:37:03,550 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)] === [2024-06-27 23:37:03,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1072134679, now seen corresponding path program 1 times [2024-06-27 23:37:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:03,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917976923] [2024-06-27 23:37:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:03,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:05,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:05,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917976923] [2024-06-27 23:37:05,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917976923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:05,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:05,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:05,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095037099] [2024-06-27 23:37:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:05,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:05,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:05,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:05,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:05,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:05,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 351 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:05,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:05,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:05,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:05,542 INFO L124 PetriNetUnfolderBase]: 264/487 cut-off events. [2024-06-27 23:37:05,543 INFO L125 PetriNetUnfolderBase]: For 4127/4127 co-relation queries the response was YES. [2024-06-27 23:37:05,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 487 events. 264/487 cut-off events. For 4127/4127 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1828 event pairs, 104 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 2028. Up to 401 conditions per place. [2024-06-27 23:37:05,546 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 48 selfloop transitions, 22 changer transitions 0/74 dead transitions. [2024-06-27 23:37:05,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 586 flow [2024-06-27 23:37:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-27 23:37:05,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-27 23:37:05,548 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 351 flow. Second operand 7 states and 100 transitions. [2024-06-27 23:37:05,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 586 flow [2024-06-27 23:37:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 74 transitions, 561 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:05,555 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 433 flow [2024-06-27 23:37:05,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-27 23:37:05,556 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-27 23:37:05,556 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 433 flow [2024-06-27 23:37:05,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:05,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:05,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:05,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:37:05,557 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)] === [2024-06-27 23:37:05,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1451506393, now seen corresponding path program 2 times [2024-06-27 23:37:05,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:05,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10340256] [2024-06-27 23:37:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:07,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:07,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10340256] [2024-06-27 23:37:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10340256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:07,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191263047] [2024-06-27 23:37:07,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:07,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:07,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:07,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:07,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:07,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:07,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:07,580 INFO L124 PetriNetUnfolderBase]: 276/507 cut-off events. [2024-06-27 23:37:07,580 INFO L125 PetriNetUnfolderBase]: For 5015/5015 co-relation queries the response was YES. [2024-06-27 23:37:07,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 507 events. 276/507 cut-off events. For 5015/5015 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1926 event pairs, 105 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 2267. Up to 414 conditions per place. [2024-06-27 23:37:07,585 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 51 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-27 23:37:07,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 719 flow [2024-06-27 23:37:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-27 23:37:07,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-27 23:37:07,586 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 433 flow. Second operand 8 states and 109 transitions. [2024-06-27 23:37:07,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 719 flow [2024-06-27 23:37:07,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 686 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:07,594 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 511 flow [2024-06-27 23:37:07,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=511, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-06-27 23:37:07,595 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2024-06-27 23:37:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 511 flow [2024-06-27 23:37:07,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:07,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:07,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:07,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:37:07,596 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)] === [2024-06-27 23:37:07,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:07,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1450894205, now seen corresponding path program 1 times [2024-06-27 23:37:07,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:07,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535790702] [2024-06-27 23:37:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:07,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:09,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535790702] [2024-06-27 23:37:09,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535790702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:09,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:09,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847280049] [2024-06-27 23:37:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:09,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:09,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:09,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:09,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:09,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:09,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 511 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:09,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:09,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:09,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:09,758 INFO L124 PetriNetUnfolderBase]: 283/515 cut-off events. [2024-06-27 23:37:09,759 INFO L125 PetriNetUnfolderBase]: For 5608/5608 co-relation queries the response was YES. [2024-06-27 23:37:09,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 515 events. 283/515 cut-off events. For 5608/5608 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1947 event pairs, 117 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 2366. Up to 442 conditions per place. [2024-06-27 23:37:09,764 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 52 selfloop transitions, 20 changer transitions 0/82 dead transitions. [2024-06-27 23:37:09,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 731 flow [2024-06-27 23:37:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:37:09,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:37:09,766 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 511 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:37:09,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 731 flow [2024-06-27 23:37:09,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 694 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:09,776 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 543 flow [2024-06-27 23:37:09,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=543, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-27 23:37:09,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-27 23:37:09,777 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 543 flow [2024-06-27 23:37:09,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:09,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:09,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:37:09,778 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)] === [2024-06-27 23:37:09,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1451499883, now seen corresponding path program 3 times [2024-06-27 23:37:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700565889] [2024-06-27 23:37:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700565889] [2024-06-27 23:37:11,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700565889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:11,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:11,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396782573] [2024-06-27 23:37:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:11,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:11,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 543 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:11,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:11,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:11,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:11,898 INFO L124 PetriNetUnfolderBase]: 279/511 cut-off events. [2024-06-27 23:37:11,898 INFO L125 PetriNetUnfolderBase]: For 6479/6479 co-relation queries the response was YES. [2024-06-27 23:37:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 511 events. 279/511 cut-off events. For 6479/6479 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1938 event pairs, 104 based on Foata normal form. 1/512 useless extension candidates. Maximal degree in co-relation 2441. Up to 417 conditions per place. [2024-06-27 23:37:11,902 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 50 selfloop transitions, 26 changer transitions 0/82 dead transitions. [2024-06-27 23:37:11,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 753 flow [2024-06-27 23:37:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:11,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:37:11,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:37:11,904 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 543 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:37:11,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 753 flow [2024-06-27 23:37:11,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 731 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:11,914 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 578 flow [2024-06-27 23:37:11,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2024-06-27 23:37:11,915 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 55 predicate places. [2024-06-27 23:37:11,915 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 578 flow [2024-06-27 23:37:11,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:11,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:11,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:11,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:37:11,916 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)] === [2024-06-27 23:37:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1843064099, now seen corresponding path program 4 times [2024-06-27 23:37:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652027906] [2024-06-27 23:37:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652027906] [2024-06-27 23:37:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652027906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:13,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823666999] [2024-06-27 23:37:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:13,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:13,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:13,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:13,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:13,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:13,590 INFO L124 PetriNetUnfolderBase]: 282/516 cut-off events. [2024-06-27 23:37:13,590 INFO L125 PetriNetUnfolderBase]: For 7414/7414 co-relation queries the response was YES. [2024-06-27 23:37:13,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 516 events. 282/516 cut-off events. For 7414/7414 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1957 event pairs, 118 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 2564. Up to 450 conditions per place. [2024-06-27 23:37:13,595 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 18 changer transitions 0/83 dead transitions. [2024-06-27 23:37:13,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 821 flow [2024-06-27 23:37:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:37:13,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-27 23:37:13,597 INFO L175 Difference]: Start difference. First operand has 87 places, 71 transitions, 578 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:37:13,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 821 flow [2024-06-27 23:37:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 771 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:13,609 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 611 flow [2024-06-27 23:37:13,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-27 23:37:13,610 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-27 23:37:13,610 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 611 flow [2024-06-27 23:37:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:13,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:13,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:37:13,611 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)] === [2024-06-27 23:37:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1843243589, now seen corresponding path program 5 times [2024-06-27 23:37:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167277870] [2024-06-27 23:37:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:14,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:14,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167277870] [2024-06-27 23:37:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167277870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:15,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:15,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897214399] [2024-06-27 23:37:15,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:15,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:15,276 INFO L124 PetriNetUnfolderBase]: 285/521 cut-off events. [2024-06-27 23:37:15,276 INFO L125 PetriNetUnfolderBase]: For 8244/8244 co-relation queries the response was YES. [2024-06-27 23:37:15,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 521 events. 285/521 cut-off events. For 8244/8244 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1981 event pairs, 118 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 2641. Up to 454 conditions per place. [2024-06-27 23:37:15,282 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-27 23:37:15,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 84 transitions, 843 flow [2024-06-27 23:37:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:37:15,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-27 23:37:15,284 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 611 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:37:15,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 84 transitions, 843 flow [2024-06-27 23:37:15,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 84 transitions, 798 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:15,296 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 631 flow [2024-06-27 23:37:15,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-06-27 23:37:15,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-27 23:37:15,297 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 631 flow [2024-06-27 23:37:15,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:15,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:15,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:15,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:37:15,298 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)] === [2024-06-27 23:37:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2068766403, now seen corresponding path program 2 times [2024-06-27 23:37:15,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:15,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527764468] [2024-06-27 23:37:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:16,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:16,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527764468] [2024-06-27 23:37:16,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527764468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:16,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304596052] [2024-06-27 23:37:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:16,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:16,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:16,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 631 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:16,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:17,025 INFO L124 PetriNetUnfolderBase]: 287/525 cut-off events. [2024-06-27 23:37:17,025 INFO L125 PetriNetUnfolderBase]: For 8903/8903 co-relation queries the response was YES. [2024-06-27 23:37:17,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 525 events. 287/525 cut-off events. For 8903/8903 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2005 event pairs, 128 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 2665. Up to 462 conditions per place. [2024-06-27 23:37:17,031 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 56 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-27 23:37:17,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 847 flow [2024-06-27 23:37:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:37:17,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-27 23:37:17,033 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 631 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:37:17,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 847 flow [2024-06-27 23:37:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 86 transitions, 816 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:17,047 INFO L231 Difference]: Finished difference. Result has 94 places, 78 transitions, 653 flow [2024-06-27 23:37:17,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=94, PETRI_TRANSITIONS=78} [2024-06-27 23:37:17,048 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-27 23:37:17,048 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 78 transitions, 653 flow [2024-06-27 23:37:17,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:17,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:17,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:17,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:37:17,049 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)] === [2024-06-27 23:37:17,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1636108453, now seen corresponding path program 3 times [2024-06-27 23:37:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559031130] [2024-06-27 23:37:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559031130] [2024-06-27 23:37:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559031130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:18,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263027965] [2024-06-27 23:37:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:18,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:18,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:18,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:18,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:18,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 78 transitions, 653 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:18,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:18,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:18,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:18,722 INFO L124 PetriNetUnfolderBase]: 290/530 cut-off events. [2024-06-27 23:37:18,722 INFO L125 PetriNetUnfolderBase]: For 9850/9850 co-relation queries the response was YES. [2024-06-27 23:37:18,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 530 events. 290/530 cut-off events. For 9850/9850 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2027 event pairs, 126 based on Foata normal form. 1/531 useless extension candidates. Maximal degree in co-relation 2742. Up to 477 conditions per place. [2024-06-27 23:37:18,727 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 15 changer transitions 0/87 dead transitions. [2024-06-27 23:37:18,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 87 transitions, 873 flow [2024-06-27 23:37:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-27 23:37:18,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-27 23:37:18,733 INFO L175 Difference]: Start difference. First operand has 94 places, 78 transitions, 653 flow. Second operand 7 states and 90 transitions. [2024-06-27 23:37:18,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 87 transitions, 873 flow [2024-06-27 23:37:18,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 827 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:18,746 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 660 flow [2024-06-27 23:37:18,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=660, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-27 23:37:18,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-27 23:37:18,747 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 660 flow [2024-06-27 23:37:18,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:18,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:18,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:37:18,747 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)] === [2024-06-27 23:37:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2079715867, now seen corresponding path program 4 times [2024-06-27 23:37:18,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:18,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117279410] [2024-06-27 23:37:18,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:18,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:19,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117279410] [2024-06-27 23:37:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117279410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:19,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:19,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521850372] [2024-06-27 23:37:19,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:19,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 660 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:19,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:19,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:20,191 INFO L124 PetriNetUnfolderBase]: 288/527 cut-off events. [2024-06-27 23:37:20,192 INFO L125 PetriNetUnfolderBase]: For 10614/10614 co-relation queries the response was YES. [2024-06-27 23:37:20,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 527 events. 288/527 cut-off events. For 10614/10614 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2018 event pairs, 126 based on Foata normal form. 1/528 useless extension candidates. Maximal degree in co-relation 2748. Up to 481 conditions per place. [2024-06-27 23:37:20,197 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 61 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 23:37:20,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 86 transitions, 820 flow [2024-06-27 23:37:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 23:37:20,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-27 23:37:20,198 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 660 flow. Second operand 7 states and 87 transitions. [2024-06-27 23:37:20,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 86 transitions, 820 flow [2024-06-27 23:37:20,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 86 transitions, 779 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:20,211 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 648 flow [2024-06-27 23:37:20,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-06-27 23:37:20,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-27 23:37:20,212 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 648 flow [2024-06-27 23:37:20,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:20,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:20,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:20,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:37:20,213 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)] === [2024-06-27 23:37:20,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2079418949, now seen corresponding path program 6 times [2024-06-27 23:37:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993921418] [2024-06-27 23:37:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993921418] [2024-06-27 23:37:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993921418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:21,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674755853] [2024-06-27 23:37:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:21,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:21,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 648 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:21,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:21,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:21,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:21,593 INFO L124 PetriNetUnfolderBase]: 287/525 cut-off events. [2024-06-27 23:37:21,593 INFO L125 PetriNetUnfolderBase]: For 11650/11650 co-relation queries the response was YES. [2024-06-27 23:37:21,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2828 conditions, 525 events. 287/525 cut-off events. For 11650/11650 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2014 event pairs, 117 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 2780. Up to 475 conditions per place. [2024-06-27 23:37:21,597 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 66 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 23:37:21,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 818 flow [2024-06-27 23:37:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 23:37:21,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-27 23:37:21,599 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 648 flow. Second operand 8 states and 94 transitions. [2024-06-27 23:37:21,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 818 flow [2024-06-27 23:37:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 86 transitions, 787 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:21,614 INFO L231 Difference]: Finished difference. Result has 100 places, 80 transitions, 646 flow [2024-06-27 23:37:21,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=646, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2024-06-27 23:37:21,614 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 68 predicate places. [2024-06-27 23:37:21,615 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 646 flow [2024-06-27 23:37:21,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 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) [2024-06-27 23:37:21,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:21,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:21,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:37:21,615 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)] === [2024-06-27 23:37:21,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1905139950, now seen corresponding path program 1 times [2024-06-27 23:37:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988047643] [2024-06-27 23:37:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:22,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:22,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988047643] [2024-06-27 23:37:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988047643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:22,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621712667] [2024-06-27 23:37:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:22,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:22,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:22,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:22,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 646 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:22,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:22,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:22,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:23,286 INFO L124 PetriNetUnfolderBase]: 293/536 cut-off events. [2024-06-27 23:37:23,287 INFO L125 PetriNetUnfolderBase]: For 12863/12864 co-relation queries the response was YES. [2024-06-27 23:37:23,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2914 conditions, 536 events. 293/536 cut-off events. For 12863/12864 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2096 event pairs, 98 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 2865. Up to 402 conditions per place. [2024-06-27 23:37:23,291 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 57 selfloop transitions, 38 changer transitions 0/103 dead transitions. [2024-06-27 23:37:23,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 103 transitions, 964 flow [2024-06-27 23:37:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-27 23:37:23,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 23:37:23,294 INFO L175 Difference]: Start difference. First operand has 100 places, 80 transitions, 646 flow. Second operand 8 states and 114 transitions. [2024-06-27 23:37:23,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 103 transitions, 964 flow [2024-06-27 23:37:23,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 103 transitions, 941 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:23,312 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 771 flow [2024-06-27 23:37:23,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=771, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-27 23:37:23,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-27 23:37:23,313 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 771 flow [2024-06-27 23:37:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:23,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:23,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:37:23,314 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)] === [2024-06-27 23:37:23,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1104934162, now seen corresponding path program 2 times [2024-06-27 23:37:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:23,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794155947] [2024-06-27 23:37:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:24,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794155947] [2024-06-27 23:37:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794155947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:24,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190260016] [2024-06-27 23:37:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:24,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:24,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:24,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:24,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:24,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:24,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:24,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:24,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:25,400 INFO L124 PetriNetUnfolderBase]: 306/558 cut-off events. [2024-06-27 23:37:25,401 INFO L125 PetriNetUnfolderBase]: For 14358/14358 co-relation queries the response was YES. [2024-06-27 23:37:25,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 558 events. 306/558 cut-off events. For 14358/14358 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2192 event pairs, 95 based on Foata normal form. 1/559 useless extension candidates. Maximal degree in co-relation 3162. Up to 416 conditions per place. [2024-06-27 23:37:25,406 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 37 changer transitions 0/109 dead transitions. [2024-06-27 23:37:25,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 1158 flow [2024-06-27 23:37:25,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:37:25,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:37:25,413 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 771 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:37:25,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 109 transitions, 1158 flow [2024-06-27 23:37:25,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 109 transitions, 1091 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:25,436 INFO L231 Difference]: Finished difference. Result has 111 places, 93 transitions, 842 flow [2024-06-27 23:37:25,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=842, PETRI_PLACES=111, PETRI_TRANSITIONS=93} [2024-06-27 23:37:25,437 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2024-06-27 23:37:25,437 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 93 transitions, 842 flow [2024-06-27 23:37:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:25,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:25,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:25,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:37:25,438 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)] === [2024-06-27 23:37:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1123564139, now seen corresponding path program 1 times [2024-06-27 23:37:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626833222] [2024-06-27 23:37:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626833222] [2024-06-27 23:37:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626833222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029836466] [2024-06-27 23:37:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:27,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:27,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:27,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 93 transitions, 842 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) [2024-06-27 23:37:27,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:27,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:27,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:27,506 INFO L124 PetriNetUnfolderBase]: 327/580 cut-off events. [2024-06-27 23:37:27,506 INFO L125 PetriNetUnfolderBase]: For 15317/15317 co-relation queries the response was YES. [2024-06-27 23:37:27,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3391 conditions, 580 events. 327/580 cut-off events. For 15317/15317 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2206 event pairs, 107 based on Foata normal form. 1/581 useless extension candidates. Maximal degree in co-relation 3336. Up to 472 conditions per place. [2024-06-27 23:37:27,510 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 72 selfloop transitions, 37 changer transitions 0/111 dead transitions. [2024-06-27 23:37:27,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 1168 flow [2024-06-27 23:37:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:37:27,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:37:27,511 INFO L175 Difference]: Start difference. First operand has 111 places, 93 transitions, 842 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:37:27,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 1168 flow [2024-06-27 23:37:27,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 111 transitions, 1113 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:27,530 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 894 flow [2024-06-27 23:37:27,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2024-06-27 23:37:27,531 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-27 23:37:27,531 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 894 flow [2024-06-27 23:37:27,531 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) [2024-06-27 23:37:27,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:27,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:27,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:37:27,532 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)] === [2024-06-27 23:37:27,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:27,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1105083892, now seen corresponding path program 3 times [2024-06-27 23:37:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:27,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666719178] [2024-06-27 23:37:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666719178] [2024-06-27 23:37:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666719178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923347254] [2024-06-27 23:37:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:29,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:29,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 894 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:29,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:29,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:29,503 INFO L124 PetriNetUnfolderBase]: 309/563 cut-off events. [2024-06-27 23:37:29,504 INFO L125 PetriNetUnfolderBase]: For 16527/16527 co-relation queries the response was YES. [2024-06-27 23:37:29,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 563 events. 309/563 cut-off events. For 16527/16527 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2210 event pairs, 94 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 3327. Up to 419 conditions per place. [2024-06-27 23:37:29,508 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 63 selfloop transitions, 38 changer transitions 0/111 dead transitions. [2024-06-27 23:37:29,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 111 transitions, 1182 flow [2024-06-27 23:37:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:37:29,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:37:29,509 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 894 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:37:29,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 111 transitions, 1182 flow [2024-06-27 23:37:29,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 1140 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:29,525 INFO L231 Difference]: Finished difference. Result has 119 places, 97 transitions, 933 flow [2024-06-27 23:37:29,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=933, PETRI_PLACES=119, PETRI_TRANSITIONS=97} [2024-06-27 23:37:29,525 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 87 predicate places. [2024-06-27 23:37:29,525 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 97 transitions, 933 flow [2024-06-27 23:37:29,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:29,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:29,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:29,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:37:29,526 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)] === [2024-06-27 23:37:29,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1688317966, now seen corresponding path program 4 times [2024-06-27 23:37:29,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328354189] [2024-06-27 23:37:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:29,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:31,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:31,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328354189] [2024-06-27 23:37:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328354189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:31,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297689601] [2024-06-27 23:37:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:31,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:31,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:31,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:31,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 97 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:31,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:31,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:31,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:31,801 INFO L124 PetriNetUnfolderBase]: 321/579 cut-off events. [2024-06-27 23:37:31,801 INFO L125 PetriNetUnfolderBase]: For 18184/18184 co-relation queries the response was YES. [2024-06-27 23:37:31,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3619 conditions, 579 events. 321/579 cut-off events. For 18184/18184 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2255 event pairs, 68 based on Foata normal form. 1/580 useless extension candidates. Maximal degree in co-relation 3561. Up to 432 conditions per place. [2024-06-27 23:37:31,805 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 68 selfloop transitions, 40 changer transitions 0/118 dead transitions. [2024-06-27 23:37:31,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 118 transitions, 1353 flow [2024-06-27 23:37:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:37:31,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:37:31,806 INFO L175 Difference]: Start difference. First operand has 119 places, 97 transitions, 933 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:37:31,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 118 transitions, 1353 flow [2024-06-27 23:37:31,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 118 transitions, 1275 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:31,826 INFO L231 Difference]: Finished difference. Result has 123 places, 103 transitions, 1009 flow [2024-06-27 23:37:31,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1009, PETRI_PLACES=123, PETRI_TRANSITIONS=103} [2024-06-27 23:37:31,827 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-27 23:37:31,827 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 103 transitions, 1009 flow [2024-06-27 23:37:31,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:31,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:31,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:31,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:37:31,827 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)] === [2024-06-27 23:37:31,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1688467913, now seen corresponding path program 2 times [2024-06-27 23:37:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:31,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713550725] [2024-06-27 23:37:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:33,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:33,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713550725] [2024-06-27 23:37:33,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713550725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:33,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:33,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77465370] [2024-06-27 23:37:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:33,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:33,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:33,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:33,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 103 transitions, 1009 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) [2024-06-27 23:37:33,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:33,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:33,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:34,174 INFO L124 PetriNetUnfolderBase]: 345/610 cut-off events. [2024-06-27 23:37:34,174 INFO L125 PetriNetUnfolderBase]: For 19722/19722 co-relation queries the response was YES. [2024-06-27 23:37:34,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 610 events. 345/610 cut-off events. For 19722/19722 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2370 event pairs, 109 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 3770. Up to 499 conditions per place. [2024-06-27 23:37:34,177 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 83 selfloop transitions, 36 changer transitions 0/121 dead transitions. [2024-06-27 23:37:34,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 1419 flow [2024-06-27 23:37:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:37:34,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-27 23:37:34,178 INFO L175 Difference]: Start difference. First operand has 123 places, 103 transitions, 1009 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:37:34,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 1419 flow [2024-06-27 23:37:34,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 1355 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:34,201 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 1050 flow [2024-06-27 23:37:34,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-06-27 23:37:34,202 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 95 predicate places. [2024-06-27 23:37:34,202 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 1050 flow [2024-06-27 23:37:34,202 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) [2024-06-27 23:37:34,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:34,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:34,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:37:34,203 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)] === [2024-06-27 23:37:34,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1688467696, now seen corresponding path program 5 times [2024-06-27 23:37:34,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:34,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625094909] [2024-06-27 23:37:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:34,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625094909] [2024-06-27 23:37:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625094909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762850236] [2024-06-27 23:37:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:35,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:36,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:36,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 1050 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:36,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:36,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:36,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:36,596 INFO L124 PetriNetUnfolderBase]: 332/597 cut-off events. [2024-06-27 23:37:36,597 INFO L125 PetriNetUnfolderBase]: For 21370/21370 co-relation queries the response was YES. [2024-06-27 23:37:36,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 597 events. 332/597 cut-off events. For 21370/21370 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2347 event pairs, 68 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 3772. Up to 444 conditions per place. [2024-06-27 23:37:36,602 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 70 selfloop transitions, 41 changer transitions 0/123 dead transitions. [2024-06-27 23:37:36,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 123 transitions, 1440 flow [2024-06-27 23:37:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:37:36,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:37:36,603 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 1050 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:37:36,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 123 transitions, 1440 flow [2024-06-27 23:37:36,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 1389 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:36,630 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 1106 flow [2024-06-27 23:37:36,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2024-06-27 23:37:36,630 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-27 23:37:36,630 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 1106 flow [2024-06-27 23:37:36,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:36,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:36,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:36,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:37:36,631 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)] === [2024-06-27 23:37:36,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2028046823, now seen corresponding path program 3 times [2024-06-27 23:37:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:36,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849223559] [2024-06-27 23:37:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849223559] [2024-06-27 23:37:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849223559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:38,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:38,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778817634] [2024-06-27 23:37:38,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:38,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:38,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:38,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 1106 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) [2024-06-27 23:37:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:38,826 INFO L124 PetriNetUnfolderBase]: 351/621 cut-off events. [2024-06-27 23:37:38,827 INFO L125 PetriNetUnfolderBase]: For 22852/22852 co-relation queries the response was YES. [2024-06-27 23:37:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 621 events. 351/621 cut-off events. For 22852/22852 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2429 event pairs, 107 based on Foata normal form. 1/622 useless extension candidates. Maximal degree in co-relation 3946. Up to 508 conditions per place. [2024-06-27 23:37:38,831 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 41 changer transitions 0/124 dead transitions. [2024-06-27 23:37:38,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 1514 flow [2024-06-27 23:37:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:37:38,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:37:38,832 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 1106 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:37:38,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 1514 flow [2024-06-27 23:37:38,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1439 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:38,861 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 1134 flow [2024-06-27 23:37:38,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1134, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2024-06-27 23:37:38,861 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2024-06-27 23:37:38,862 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 1134 flow [2024-06-27 23:37:38,862 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) [2024-06-27 23:37:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:38,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:37:38,862 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)] === [2024-06-27 23:37:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1621875383, now seen corresponding path program 4 times [2024-06-27 23:37:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:38,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872800495] [2024-06-27 23:37:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:40,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:40,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872800495] [2024-06-27 23:37:40,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872800495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:40,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:40,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38333702] [2024-06-27 23:37:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:40,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:40,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 1134 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) [2024-06-27 23:37:40,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:40,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:41,194 INFO L124 PetriNetUnfolderBase]: 349/618 cut-off events. [2024-06-27 23:37:41,194 INFO L125 PetriNetUnfolderBase]: For 23960/23960 co-relation queries the response was YES. [2024-06-27 23:37:41,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 618 events. 349/618 cut-off events. For 23960/23960 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2406 event pairs, 107 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 3957. Up to 506 conditions per place. [2024-06-27 23:37:41,199 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 82 selfloop transitions, 39 changer transitions 0/123 dead transitions. [2024-06-27 23:37:41,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 123 transitions, 1466 flow [2024-06-27 23:37:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:37:41,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:37:41,201 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 1134 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:37:41,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 123 transitions, 1466 flow [2024-06-27 23:37:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 123 transitions, 1387 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:41,246 INFO L231 Difference]: Finished difference. Result has 137 places, 111 transitions, 1138 flow [2024-06-27 23:37:41,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=137, PETRI_TRANSITIONS=111} [2024-06-27 23:37:41,246 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-27 23:37:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 111 transitions, 1138 flow [2024-06-27 23:37:41,247 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) [2024-06-27 23:37:41,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:41,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:41,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:37:41,247 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)] === [2024-06-27 23:37:41,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1621875600, now seen corresponding path program 6 times [2024-06-27 23:37:41,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:41,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877501495] [2024-06-27 23:37:41,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:41,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877501495] [2024-06-27 23:37:43,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877501495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:43,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:43,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998453155] [2024-06-27 23:37:43,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:43,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:43,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:43,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:43,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:43,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:43,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 111 transitions, 1138 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:43,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:43,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:43,651 INFO L124 PetriNetUnfolderBase]: 331/597 cut-off events. [2024-06-27 23:37:43,651 INFO L125 PetriNetUnfolderBase]: For 25224/25224 co-relation queries the response was YES. [2024-06-27 23:37:43,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 597 events. 331/597 cut-off events. For 25224/25224 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2338 event pairs, 67 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 3883. Up to 443 conditions per place. [2024-06-27 23:37:43,657 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 66 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-06-27 23:37:43,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 123 transitions, 1450 flow [2024-06-27 23:37:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:43,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:37:43,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-27 23:37:43,658 INFO L175 Difference]: Start difference. First operand has 137 places, 111 transitions, 1138 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:37:43,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 123 transitions, 1450 flow [2024-06-27 23:37:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 123 transitions, 1351 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:37:43,703 INFO L231 Difference]: Finished difference. Result has 137 places, 111 transitions, 1132 flow [2024-06-27 23:37:43,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=137, PETRI_TRANSITIONS=111} [2024-06-27 23:37:43,704 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-27 23:37:43,704 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 111 transitions, 1132 flow [2024-06-27 23:37:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:43,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:43,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:37:43,705 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)] === [2024-06-27 23:37:43,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2046814874, now seen corresponding path program 1 times [2024-06-27 23:37:43,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216725710] [2024-06-27 23:37:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:45,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:45,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216725710] [2024-06-27 23:37:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216725710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:45,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:45,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910620925] [2024-06-27 23:37:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:45,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:45,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:45,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 111 transitions, 1132 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:45,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:46,116 INFO L124 PetriNetUnfolderBase]: 330/596 cut-off events. [2024-06-27 23:37:46,117 INFO L125 PetriNetUnfolderBase]: For 26864/26867 co-relation queries the response was YES. [2024-06-27 23:37:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 596 events. 330/596 cut-off events. For 26864/26867 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2382 event pairs, 113 based on Foata normal form. 4/598 useless extension candidates. Maximal degree in co-relation 3887. Up to 493 conditions per place. [2024-06-27 23:37:46,123 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 85 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-06-27 23:37:46,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 129 transitions, 1480 flow [2024-06-27 23:37:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:46,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:37:46,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:37:46,124 INFO L175 Difference]: Start difference. First operand has 137 places, 111 transitions, 1132 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:37:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 129 transitions, 1480 flow [2024-06-27 23:37:46,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 129 transitions, 1405 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:46,170 INFO L231 Difference]: Finished difference. Result has 141 places, 117 transitions, 1159 flow [2024-06-27 23:37:46,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1159, PETRI_PLACES=141, PETRI_TRANSITIONS=117} [2024-06-27 23:37:46,170 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 109 predicate places. [2024-06-27 23:37:46,170 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 117 transitions, 1159 flow [2024-06-27 23:37:46,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:46,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:46,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:46,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:37:46,171 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)] === [2024-06-27 23:37:46,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1300263094, now seen corresponding path program 7 times [2024-06-27 23:37:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821753765] [2024-06-27 23:37:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:47,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:47,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821753765] [2024-06-27 23:37:47,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821753765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:47,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:47,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:47,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764354739] [2024-06-27 23:37:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:47,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:47,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:47,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:47,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 117 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:47,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:47,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:47,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:47,818 INFO L124 PetriNetUnfolderBase]: 336/608 cut-off events. [2024-06-27 23:37:47,819 INFO L125 PetriNetUnfolderBase]: For 28417/28417 co-relation queries the response was YES. [2024-06-27 23:37:47,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4101 conditions, 608 events. 336/608 cut-off events. For 28417/28417 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2434 event pairs, 124 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 4034. Up to 514 conditions per place. [2024-06-27 23:37:47,824 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-27 23:37:47,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 131 transitions, 1519 flow [2024-06-27 23:37:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:37:47,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:37:47,829 INFO L175 Difference]: Start difference. First operand has 141 places, 117 transitions, 1159 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:37:47,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 131 transitions, 1519 flow [2024-06-27 23:37:47,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 131 transitions, 1502 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:47,878 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 1235 flow [2024-06-27 23:37:47,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-27 23:37:47,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-27 23:37:47,879 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 1235 flow [2024-06-27 23:37:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:47,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:47,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:47,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:37:47,880 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)] === [2024-06-27 23:37:47,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:47,880 INFO L85 PathProgramCache]: Analyzing trace with hash 757413039, now seen corresponding path program 5 times [2024-06-27 23:37:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:47,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645200153] [2024-06-27 23:37:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:47,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645200153] [2024-06-27 23:37:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645200153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:49,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:49,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712448688] [2024-06-27 23:37:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:49,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:49,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:49,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 1235 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) [2024-06-27 23:37:49,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:49,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:49,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:49,584 INFO L124 PetriNetUnfolderBase]: 356/630 cut-off events. [2024-06-27 23:37:49,584 INFO L125 PetriNetUnfolderBase]: For 29908/29908 co-relation queries the response was YES. [2024-06-27 23:37:49,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4306 conditions, 630 events. 356/630 cut-off events. For 29908/29908 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2488 event pairs, 134 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 4235. Up to 561 conditions per place. [2024-06-27 23:37:49,589 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 103 selfloop transitions, 27 changer transitions 0/132 dead transitions. [2024-06-27 23:37:49,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 132 transitions, 1605 flow [2024-06-27 23:37:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 23:37:49,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 23:37:49,596 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 1235 flow. Second operand 8 states and 99 transitions. [2024-06-27 23:37:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 132 transitions, 1605 flow [2024-06-27 23:37:49,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 132 transitions, 1538 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:37:49,635 INFO L231 Difference]: Finished difference. Result has 146 places, 122 transitions, 1243 flow [2024-06-27 23:37:49,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1243, PETRI_PLACES=146, PETRI_TRANSITIONS=122} [2024-06-27 23:37:49,636 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-27 23:37:49,636 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 122 transitions, 1243 flow [2024-06-27 23:37:49,636 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) [2024-06-27 23:37:49,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:49,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:49,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:37:49,636 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)] === [2024-06-27 23:37:49,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1300412824, now seen corresponding path program 8 times [2024-06-27 23:37:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012337206] [2024-06-27 23:37:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012337206] [2024-06-27 23:37:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012337206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441566748] [2024-06-27 23:37:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:50,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:51,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:51,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 122 transitions, 1243 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:51,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:51,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:51,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:51,299 INFO L124 PetriNetUnfolderBase]: 342/618 cut-off events. [2024-06-27 23:37:51,299 INFO L125 PetriNetUnfolderBase]: For 31803/31803 co-relation queries the response was YES. [2024-06-27 23:37:51,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 618 events. 342/618 cut-off events. For 31803/31803 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2493 event pairs, 124 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 4212. Up to 521 conditions per place. [2024-06-27 23:37:51,304 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 95 selfloop transitions, 25 changer transitions 0/134 dead transitions. [2024-06-27 23:37:51,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 134 transitions, 1601 flow [2024-06-27 23:37:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:51,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:37:51,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:37:51,309 INFO L175 Difference]: Start difference. First operand has 146 places, 122 transitions, 1243 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:37:51,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 134 transitions, 1601 flow [2024-06-27 23:37:51,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 1509 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:37:51,357 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 1228 flow [2024-06-27 23:37:51,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1228, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-06-27 23:37:51,357 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2024-06-27 23:37:51,358 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 1228 flow [2024-06-27 23:37:51,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:51,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:51,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:51,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:37:51,358 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)] === [2024-06-27 23:37:51,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1305984671, now seen corresponding path program 6 times [2024-06-27 23:37:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952863537] [2024-06-27 23:37:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:52,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952863537] [2024-06-27 23:37:52,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952863537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:52,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103603244] [2024-06-27 23:37:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:52,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:52,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:52,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 1228 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) [2024-06-27 23:37:52,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:52,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:52,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:53,123 INFO L124 PetriNetUnfolderBase]: 367/648 cut-off events. [2024-06-27 23:37:53,123 INFO L125 PetriNetUnfolderBase]: For 33813/33813 co-relation queries the response was YES. [2024-06-27 23:37:53,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 648 events. 367/648 cut-off events. For 33813/33813 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2573 event pairs, 134 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 4403. Up to 576 conditions per place. [2024-06-27 23:37:53,129 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 107 selfloop transitions, 29 changer transitions 0/138 dead transitions. [2024-06-27 23:37:53,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 138 transitions, 1696 flow [2024-06-27 23:37:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:37:53,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:37:53,131 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 1228 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:37:53,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 138 transitions, 1696 flow [2024-06-27 23:37:53,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 138 transitions, 1655 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:53,171 INFO L231 Difference]: Finished difference. Result has 150 places, 128 transitions, 1278 flow [2024-06-27 23:37:53,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1278, PETRI_PLACES=150, PETRI_TRANSITIONS=128} [2024-06-27 23:37:53,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-27 23:37:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 128 transitions, 1278 flow [2024-06-27 23:37:53,172 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) [2024-06-27 23:37:53,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:53,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:53,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:37:53,172 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)] === [2024-06-27 23:37:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1715276913, now seen corresponding path program 7 times [2024-06-27 23:37:53,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:53,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797963731] [2024-06-27 23:37:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:54,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:54,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797963731] [2024-06-27 23:37:54,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797963731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:54,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:54,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:54,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086059141] [2024-06-27 23:37:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:54,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:54,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:54,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 128 transitions, 1278 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) [2024-06-27 23:37:54,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:54,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:54,793 INFO L124 PetriNetUnfolderBase]: 365/645 cut-off events. [2024-06-27 23:37:54,793 INFO L125 PetriNetUnfolderBase]: For 34995/34995 co-relation queries the response was YES. [2024-06-27 23:37:54,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 645 events. 365/645 cut-off events. For 34995/34995 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2565 event pairs, 134 based on Foata normal form. 1/646 useless extension candidates. Maximal degree in co-relation 4420. Up to 574 conditions per place. [2024-06-27 23:37:54,797 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 107 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-27 23:37:54,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 137 transitions, 1644 flow [2024-06-27 23:37:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:37:54,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-27 23:37:54,799 INFO L175 Difference]: Start difference. First operand has 150 places, 128 transitions, 1278 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:37:54,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 137 transitions, 1644 flow [2024-06-27 23:37:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 137 transitions, 1597 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:54,853 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 1292 flow [2024-06-27 23:37:54,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-06-27 23:37:54,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-27 23:37:54,853 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 1292 flow [2024-06-27 23:37:54,853 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) [2024-06-27 23:37:54,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:54,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:54,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:37:54,854 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)] === [2024-06-27 23:37:54,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1305984950, now seen corresponding path program 2 times [2024-06-27 23:37:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270827734] [2024-06-27 23:37:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:56,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270827734] [2024-06-27 23:37:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270827734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17337856] [2024-06-27 23:37:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:56,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:56,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:37:56,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 1292 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) [2024-06-27 23:37:56,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:56,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:37:56,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:56,510 INFO L124 PetriNetUnfolderBase]: 384/676 cut-off events. [2024-06-27 23:37:56,511 INFO L125 PetriNetUnfolderBase]: For 39937/39937 co-relation queries the response was YES. [2024-06-27 23:37:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4738 conditions, 676 events. 384/676 cut-off events. For 39937/39937 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2715 event pairs, 137 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 4666. Up to 606 conditions per place. [2024-06-27 23:37:56,515 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 119 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-27 23:37:56,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 145 transitions, 1722 flow [2024-06-27 23:37:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:56,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-27 23:37:56,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:37:56,516 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 1292 flow. Second operand 8 states and 102 transitions. [2024-06-27 23:37:56,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 145 transitions, 1722 flow [2024-06-27 23:37:56,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 145 transitions, 1660 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:37:56,583 INFO L231 Difference]: Finished difference. Result has 155 places, 133 transitions, 1326 flow [2024-06-27 23:37:56,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1326, PETRI_PLACES=155, PETRI_TRANSITIONS=133} [2024-06-27 23:37:56,583 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 123 predicate places. [2024-06-27 23:37:56,584 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 133 transitions, 1326 flow [2024-06-27 23:37:56,584 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) [2024-06-27 23:37:56,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:56,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:37:56,584 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)] === [2024-06-27 23:37:56,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:56,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1715276696, now seen corresponding path program 9 times [2024-06-27 23:37:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193269413] [2024-06-27 23:37:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:58,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:58,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:58,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193269413] [2024-06-27 23:37:58,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193269413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:58,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601831824] [2024-06-27 23:37:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:58,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:58,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:58,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 133 transitions, 1326 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:58,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:58,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:58,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:58,439 INFO L124 PetriNetUnfolderBase]: 369/663 cut-off events. [2024-06-27 23:37:58,439 INFO L125 PetriNetUnfolderBase]: For 40840/40840 co-relation queries the response was YES. [2024-06-27 23:37:58,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 663 events. 369/663 cut-off events. For 40840/40840 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2719 event pairs, 126 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4693. Up to 561 conditions per place. [2024-06-27 23:37:58,443 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 102 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-27 23:37:58,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 144 transitions, 1706 flow [2024-06-27 23:37:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:58,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-27 23:37:58,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 23:37:58,444 INFO L175 Difference]: Start difference. First operand has 155 places, 133 transitions, 1326 flow. Second operand 8 states and 105 transitions. [2024-06-27 23:37:58,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 144 transitions, 1706 flow [2024-06-27 23:37:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 144 transitions, 1683 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:58,494 INFO L231 Difference]: Finished difference. Result has 160 places, 135 transitions, 1384 flow [2024-06-27 23:37:58,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1384, PETRI_PLACES=160, PETRI_TRANSITIONS=135} [2024-06-27 23:37:58,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-06-27 23:37:58,495 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 135 transitions, 1384 flow [2024-06-27 23:37:58,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:58,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:58,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:58,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:37:58,496 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)] === [2024-06-27 23:37:58,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 820238424, now seen corresponding path program 10 times [2024-06-27 23:37:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:58,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020048457] [2024-06-27 23:37:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020048457] [2024-06-27 23:37:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020048457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:59,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949691034] [2024-06-27 23:37:59,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:59,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:59,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:59,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:59,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:59,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 135 transitions, 1384 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:59,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:59,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:59,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:00,069 INFO L124 PetriNetUnfolderBase]: 367/660 cut-off events. [2024-06-27 23:38:00,069 INFO L125 PetriNetUnfolderBase]: For 42069/42069 co-relation queries the response was YES. [2024-06-27 23:38:00,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4794 conditions, 660 events. 367/660 cut-off events. For 42069/42069 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2707 event pairs, 125 based on Foata normal form. 1/661 useless extension candidates. Maximal degree in co-relation 4718. Up to 592 conditions per place. [2024-06-27 23:38:00,074 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-06-27 23:38:00,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 142 transitions, 1652 flow [2024-06-27 23:38:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:38:00,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-27 23:38:00,075 INFO L175 Difference]: Start difference. First operand has 160 places, 135 transitions, 1384 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:38:00,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 142 transitions, 1652 flow [2024-06-27 23:38:00,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 142 transitions, 1607 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:00,130 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 1372 flow [2024-06-27 23:38:00,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2024-06-27 23:38:00,130 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 132 predicate places. [2024-06-27 23:38:00,130 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 1372 flow [2024-06-27 23:38:00,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:00,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:00,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:00,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:38:00,131 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)] === [2024-06-27 23:38:00,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:00,131 INFO L85 PathProgramCache]: Analyzing trace with hash 37478799, now seen corresponding path program 8 times [2024-06-27 23:38:00,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:00,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375014811] [2024-06-27 23:38:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:00,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:01,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375014811] [2024-06-27 23:38:01,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375014811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:01,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483247000] [2024-06-27 23:38:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:01,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:01,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:01,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:01,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 1372 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) [2024-06-27 23:38:01,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:01,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:01,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:01,725 INFO L124 PetriNetUnfolderBase]: 388/683 cut-off events. [2024-06-27 23:38:01,726 INFO L125 PetriNetUnfolderBase]: For 43746/43746 co-relation queries the response was YES. [2024-06-27 23:38:01,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4928 conditions, 683 events. 388/683 cut-off events. For 43746/43746 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2760 event pairs, 134 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 4851. Up to 642 conditions per place. [2024-06-27 23:38:01,730 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 123 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2024-06-27 23:38:01,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 145 transitions, 1774 flow [2024-06-27 23:38:01,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 23:38:01,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-27 23:38:01,732 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 1372 flow. Second operand 8 states and 94 transitions. [2024-06-27 23:38:01,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 145 transitions, 1774 flow [2024-06-27 23:38:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 145 transitions, 1734 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:01,782 INFO L231 Difference]: Finished difference. Result has 164 places, 137 transitions, 1393 flow [2024-06-27 23:38:01,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1393, PETRI_PLACES=164, PETRI_TRANSITIONS=137} [2024-06-27 23:38:01,783 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 132 predicate places. [2024-06-27 23:38:01,783 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 137 transitions, 1393 flow [2024-06-27 23:38:01,783 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) [2024-06-27 23:38:01,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:01,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:01,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:38:01,784 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)] === [2024-06-27 23:38:01,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash -36249865, now seen corresponding path program 9 times [2024-06-27 23:38:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501949775] [2024-06-27 23:38:01,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:01,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:02,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:02,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501949775] [2024-06-27 23:38:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501949775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:02,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:02,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:02,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525841473] [2024-06-27 23:38:02,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:02,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:02,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:03,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:03,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 137 transitions, 1393 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) [2024-06-27 23:38:03,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:03,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:03,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:03,301 INFO L124 PetriNetUnfolderBase]: 391/688 cut-off events. [2024-06-27 23:38:03,301 INFO L125 PetriNetUnfolderBase]: For 45665/45665 co-relation queries the response was YES. [2024-06-27 23:38:03,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4997 conditions, 688 events. 391/688 cut-off events. For 45665/45665 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2773 event pairs, 134 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 4920. Up to 646 conditions per place. [2024-06-27 23:38:03,305 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 124 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-06-27 23:38:03,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 147 transitions, 1805 flow [2024-06-27 23:38:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 23:38:03,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35984848484848486 [2024-06-27 23:38:03,306 INFO L175 Difference]: Start difference. First operand has 164 places, 137 transitions, 1393 flow. Second operand 8 states and 95 transitions. [2024-06-27 23:38:03,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 147 transitions, 1805 flow [2024-06-27 23:38:03,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 147 transitions, 1732 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:03,362 INFO L231 Difference]: Finished difference. Result has 165 places, 139 transitions, 1387 flow [2024-06-27 23:38:03,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1387, PETRI_PLACES=165, PETRI_TRANSITIONS=139} [2024-06-27 23:38:03,363 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-27 23:38:03,363 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 139 transitions, 1387 flow [2024-06-27 23:38:03,363 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) [2024-06-27 23:38:03,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:03,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:38:03,363 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)] === [2024-06-27 23:38:03,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -26726386, now seen corresponding path program 3 times [2024-06-27 23:38:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:03,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975456970] [2024-06-27 23:38:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:04,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:04,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975456970] [2024-06-27 23:38:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975456970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:04,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:04,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:04,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780625819] [2024-06-27 23:38:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:04,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:04,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:04,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:04,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 139 transitions, 1387 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:04,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:04,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:04,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:04,903 INFO L124 PetriNetUnfolderBase]: 377/674 cut-off events. [2024-06-27 23:38:04,903 INFO L125 PetriNetUnfolderBase]: For 51415/51417 co-relation queries the response was YES. [2024-06-27 23:38:04,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4921 conditions, 674 events. 377/674 cut-off events. For 51415/51417 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2776 event pairs, 127 based on Foata normal form. 5/673 useless extension candidates. Maximal degree in co-relation 4843. Up to 599 conditions per place. [2024-06-27 23:38:04,908 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-27 23:38:04,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 151 transitions, 1695 flow [2024-06-27 23:38:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:38:04,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2024-06-27 23:38:04,909 INFO L175 Difference]: Start difference. First operand has 165 places, 139 transitions, 1387 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:38:04,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 151 transitions, 1695 flow [2024-06-27 23:38:04,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 151 transitions, 1658 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:04,970 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 1422 flow [2024-06-27 23:38:04,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1422, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-06-27 23:38:04,971 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 137 predicate places. [2024-06-27 23:38:04,971 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 1422 flow [2024-06-27 23:38:04,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:04,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:04,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:38:04,972 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)] === [2024-06-27 23:38:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash -36249586, now seen corresponding path program 4 times [2024-06-27 23:38:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411816216] [2024-06-27 23:38:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411816216] [2024-06-27 23:38:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411816216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80643275] [2024-06-27 23:38:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:06,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:06,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 1422 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:06,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:06,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:06,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:06,534 INFO L124 PetriNetUnfolderBase]: 386/689 cut-off events. [2024-06-27 23:38:06,534 INFO L125 PetriNetUnfolderBase]: For 54062/54064 co-relation queries the response was YES. [2024-06-27 23:38:06,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 689 events. 386/689 cut-off events. For 54062/54064 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2857 event pairs, 127 based on Foata normal form. 5/688 useless extension candidates. Maximal degree in co-relation 4974. Up to 582 conditions per place. [2024-06-27 23:38:06,539 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 110 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2024-06-27 23:38:06,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 157 transitions, 1844 flow [2024-06-27 23:38:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:38:06,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:38:06,540 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 1422 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:38:06,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 157 transitions, 1844 flow [2024-06-27 23:38:06,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 157 transitions, 1786 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:06,619 INFO L231 Difference]: Finished difference. Result has 169 places, 145 transitions, 1454 flow [2024-06-27 23:38:06,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1454, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2024-06-27 23:38:06,620 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 137 predicate places. [2024-06-27 23:38:06,620 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 1454 flow [2024-06-27 23:38:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:06,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:06,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:06,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:38:06,621 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)] === [2024-06-27 23:38:06,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:06,621 INFO L85 PathProgramCache]: Analyzing trace with hash -27053095, now seen corresponding path program 10 times [2024-06-27 23:38:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:06,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319819091] [2024-06-27 23:38:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319819091] [2024-06-27 23:38:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319819091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:07,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:07,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260633764] [2024-06-27 23:38:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:07,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:07,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:07,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 1454 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) [2024-06-27 23:38:07,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:07,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:07,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:08,028 INFO L124 PetriNetUnfolderBase]: 407/715 cut-off events. [2024-06-27 23:38:08,028 INFO L125 PetriNetUnfolderBase]: For 51452/51452 co-relation queries the response was YES. [2024-06-27 23:38:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 715 events. 407/715 cut-off events. For 51452/51452 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2918 event pairs, 134 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 5154. Up to 689 conditions per place. [2024-06-27 23:38:08,033 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 136 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-06-27 23:38:08,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 152 transitions, 1770 flow [2024-06-27 23:38:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 23:38:08,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 23:38:08,034 INFO L175 Difference]: Start difference. First operand has 169 places, 145 transitions, 1454 flow. Second operand 8 states and 90 transitions. [2024-06-27 23:38:08,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 152 transitions, 1770 flow [2024-06-27 23:38:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 152 transitions, 1696 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:08,094 INFO L231 Difference]: Finished difference. Result has 171 places, 145 transitions, 1413 flow [2024-06-27 23:38:08,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1413, PETRI_PLACES=171, PETRI_TRANSITIONS=145} [2024-06-27 23:38:08,095 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-27 23:38:08,095 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 145 transitions, 1413 flow [2024-06-27 23:38:08,095 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) [2024-06-27 23:38:08,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:08,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:38:08,095 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)] === [2024-06-27 23:38:08,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:08,096 INFO L85 PathProgramCache]: Analyzing trace with hash -27052816, now seen corresponding path program 5 times [2024-06-27 23:38:08,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:08,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878591721] [2024-06-27 23:38:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:09,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878591721] [2024-06-27 23:38:09,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878591721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:09,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:09,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:09,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11221561] [2024-06-27 23:38:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:09,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:09,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:09,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 145 transitions, 1413 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) [2024-06-27 23:38:09,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:09,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:09,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:09,593 INFO L124 PetriNetUnfolderBase]: 401/706 cut-off events. [2024-06-27 23:38:09,593 INFO L125 PetriNetUnfolderBase]: For 52372/52372 co-relation queries the response was YES. [2024-06-27 23:38:09,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 706 events. 401/706 cut-off events. For 52372/52372 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2895 event pairs, 132 based on Foata normal form. 3/709 useless extension candidates. Maximal degree in co-relation 4965. Up to 662 conditions per place. [2024-06-27 23:38:09,598 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 135 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-06-27 23:38:09,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 156 transitions, 1749 flow [2024-06-27 23:38:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:38:09,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:38:09,599 INFO L175 Difference]: Start difference. First operand has 171 places, 145 transitions, 1413 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:38:09,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 156 transitions, 1749 flow [2024-06-27 23:38:09,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 156 transitions, 1699 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:09,674 INFO L231 Difference]: Finished difference. Result has 171 places, 145 transitions, 1407 flow [2024-06-27 23:38:09,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1407, PETRI_PLACES=171, PETRI_TRANSITIONS=145} [2024-06-27 23:38:09,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-27 23:38:09,675 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 145 transitions, 1407 flow [2024-06-27 23:38:09,675 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) [2024-06-27 23:38:09,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:09,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:38:09,676 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)] === [2024-06-27 23:38:09,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -782534272, now seen corresponding path program 1 times [2024-06-27 23:38:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059008889] [2024-06-27 23:38:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:10,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059008889] [2024-06-27 23:38:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059008889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695723391] [2024-06-27 23:38:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:11,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:11,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 145 transitions, 1407 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) [2024-06-27 23:38:11,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:11,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:11,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:11,450 INFO L124 PetriNetUnfolderBase]: 393/706 cut-off events. [2024-06-27 23:38:11,450 INFO L125 PetriNetUnfolderBase]: For 53774/53775 co-relation queries the response was YES. [2024-06-27 23:38:11,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5121 conditions, 706 events. 393/706 cut-off events. For 53774/53775 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3008 event pairs, 95 based on Foata normal form. 1/706 useless extension candidates. Maximal degree in co-relation 5041. Up to 572 conditions per place. [2024-06-27 23:38:11,455 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 120 selfloop transitions, 34 changer transitions 0/172 dead transitions. [2024-06-27 23:38:11,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 172 transitions, 1909 flow [2024-06-27 23:38:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:38:11,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:38:11,456 INFO L175 Difference]: Start difference. First operand has 171 places, 145 transitions, 1407 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:38:11,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 172 transitions, 1909 flow [2024-06-27 23:38:11,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 172 transitions, 1849 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:11,557 INFO L231 Difference]: Finished difference. Result has 175 places, 152 transitions, 1482 flow [2024-06-27 23:38:11,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1482, PETRI_PLACES=175, PETRI_TRANSITIONS=152} [2024-06-27 23:38:11,557 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-27 23:38:11,557 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 152 transitions, 1482 flow [2024-06-27 23:38:11,557 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) [2024-06-27 23:38:11,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:11,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:11,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:38:11,558 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)] === [2024-06-27 23:38:11,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1070204328, now seen corresponding path program 2 times [2024-06-27 23:38:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:11,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742809589] [2024-06-27 23:38:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:11,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:13,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:13,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742809589] [2024-06-27 23:38:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742809589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:13,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:13,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:13,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824050916] [2024-06-27 23:38:13,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:13,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:13,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:13,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:13,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:13,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:13,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 152 transitions, 1482 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) [2024-06-27 23:38:13,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:13,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:13,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:13,706 INFO L124 PetriNetUnfolderBase]: 408/731 cut-off events. [2024-06-27 23:38:13,706 INFO L125 PetriNetUnfolderBase]: For 59492/59494 co-relation queries the response was YES. [2024-06-27 23:38:13,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5482 conditions, 731 events. 408/731 cut-off events. For 59492/59494 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3145 event pairs, 92 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 5401. Up to 508 conditions per place. [2024-06-27 23:38:13,712 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 101 selfloop transitions, 59 changer transitions 0/178 dead transitions. [2024-06-27 23:38:13,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 178 transitions, 2110 flow [2024-06-27 23:38:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:13,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-27 23:38:13,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097643097643096 [2024-06-27 23:38:13,714 INFO L175 Difference]: Start difference. First operand has 175 places, 152 transitions, 1482 flow. Second operand 9 states and 128 transitions. [2024-06-27 23:38:13,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 178 transitions, 2110 flow [2024-06-27 23:38:13,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 178 transitions, 2035 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:13,793 INFO L231 Difference]: Finished difference. Result has 180 places, 160 transitions, 1613 flow [2024-06-27 23:38:13,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1613, PETRI_PLACES=180, PETRI_TRANSITIONS=160} [2024-06-27 23:38:13,793 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-27 23:38:13,793 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 160 transitions, 1613 flow [2024-06-27 23:38:13,793 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) [2024-06-27 23:38:13,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:13,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:13,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:38:13,794 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)] === [2024-06-27 23:38:13,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:13,794 INFO L85 PathProgramCache]: Analyzing trace with hash 650896158, now seen corresponding path program 3 times [2024-06-27 23:38:13,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:13,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103012321] [2024-06-27 23:38:13,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:13,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:15,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:15,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103012321] [2024-06-27 23:38:15,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103012321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:15,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755795673] [2024-06-27 23:38:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:15,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:15,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:15,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:15,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:15,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 160 transitions, 1613 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) [2024-06-27 23:38:15,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:15,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:15,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:15,922 INFO L124 PetriNetUnfolderBase]: 404/725 cut-off events. [2024-06-27 23:38:15,922 INFO L125 PetriNetUnfolderBase]: For 58468/58468 co-relation queries the response was YES. [2024-06-27 23:38:15,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5476 conditions, 725 events. 404/725 cut-off events. For 58468/58468 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3098 event pairs, 97 based on Foata normal form. 1/726 useless extension candidates. Maximal degree in co-relation 5392. Up to 592 conditions per place. [2024-06-27 23:38:15,928 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 128 selfloop transitions, 31 changer transitions 0/177 dead transitions. [2024-06-27 23:38:15,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 177 transitions, 1977 flow [2024-06-27 23:38:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:15,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:38:15,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:38:15,930 INFO L175 Difference]: Start difference. First operand has 180 places, 160 transitions, 1613 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:38:15,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 177 transitions, 1977 flow [2024-06-27 23:38:16,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 177 transitions, 1912 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:38:16,029 INFO L231 Difference]: Finished difference. Result has 186 places, 160 transitions, 1615 flow [2024-06-27 23:38:16,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=186, PETRI_TRANSITIONS=160} [2024-06-27 23:38:16,029 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-27 23:38:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 160 transitions, 1615 flow [2024-06-27 23:38:16,030 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) [2024-06-27 23:38:16,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:16,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:38:16,031 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)] === [2024-06-27 23:38:16,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:16,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1070204514, now seen corresponding path program 1 times [2024-06-27 23:38:16,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:16,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435499536] [2024-06-27 23:38:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:16,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:17,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:17,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435499536] [2024-06-27 23:38:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435499536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:17,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:17,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602628710] [2024-06-27 23:38:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:17,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:17,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:17,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 160 transitions, 1615 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) [2024-06-27 23:38:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:17,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:17,993 INFO L124 PetriNetUnfolderBase]: 426/748 cut-off events. [2024-06-27 23:38:17,993 INFO L125 PetriNetUnfolderBase]: For 60340/60340 co-relation queries the response was YES. [2024-06-27 23:38:17,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5636 conditions, 748 events. 426/748 cut-off events. For 60340/60340 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3140 event pairs, 96 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 5550. Up to 538 conditions per place. [2024-06-27 23:38:17,999 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 107 selfloop transitions, 72 changer transitions 0/181 dead transitions. [2024-06-27 23:38:17,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 181 transitions, 2141 flow [2024-06-27 23:38:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:38:18,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:38:18,001 INFO L175 Difference]: Start difference. First operand has 186 places, 160 transitions, 1615 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:38:18,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 181 transitions, 2141 flow [2024-06-27 23:38:18,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 181 transitions, 2071 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:18,096 INFO L231 Difference]: Finished difference. Result has 187 places, 164 transitions, 1722 flow [2024-06-27 23:38:18,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1722, PETRI_PLACES=187, PETRI_TRANSITIONS=164} [2024-06-27 23:38:18,096 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-27 23:38:18,097 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 164 transitions, 1722 flow [2024-06-27 23:38:18,097 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) [2024-06-27 23:38:18,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:18,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:18,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:38:18,097 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)] === [2024-06-27 23:38:18,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash -106898682, now seen corresponding path program 4 times [2024-06-27 23:38:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486222943] [2024-06-27 23:38:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:19,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:19,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486222943] [2024-06-27 23:38:19,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486222943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:19,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:19,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:19,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099507581] [2024-06-27 23:38:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:19,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:19,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:20,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:20,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 164 transitions, 1722 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) [2024-06-27 23:38:20,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:20,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:20,550 INFO L124 PetriNetUnfolderBase]: 416/741 cut-off events. [2024-06-27 23:38:20,550 INFO L125 PetriNetUnfolderBase]: For 63106/63106 co-relation queries the response was YES. [2024-06-27 23:38:20,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 741 events. 416/741 cut-off events. For 63106/63106 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3162 event pairs, 97 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 5674. Up to 607 conditions per place. [2024-06-27 23:38:20,555 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 32 changer transitions 0/184 dead transitions. [2024-06-27 23:38:20,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 184 transitions, 2128 flow [2024-06-27 23:38:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:38:20,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:38:20,557 INFO L175 Difference]: Start difference. First operand has 187 places, 164 transitions, 1722 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:38:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 184 transitions, 2128 flow [2024-06-27 23:38:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 184 transitions, 2046 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:20,661 INFO L231 Difference]: Finished difference. Result has 192 places, 168 transitions, 1747 flow [2024-06-27 23:38:20,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=192, PETRI_TRANSITIONS=168} [2024-06-27 23:38:20,661 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-27 23:38:20,662 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 168 transitions, 1747 flow [2024-06-27 23:38:20,662 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) [2024-06-27 23:38:20,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:20,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:38:20,662 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)] === [2024-06-27 23:38:20,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash 615747576, now seen corresponding path program 2 times [2024-06-27 23:38:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593800357] [2024-06-27 23:38:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:22,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593800357] [2024-06-27 23:38:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593800357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:22,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:22,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:22,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819462255] [2024-06-27 23:38:22,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:22,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:22,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:22,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 168 transitions, 1747 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) [2024-06-27 23:38:22,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:22,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:22,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:23,096 INFO L124 PetriNetUnfolderBase]: 441/773 cut-off events. [2024-06-27 23:38:23,097 INFO L125 PetriNetUnfolderBase]: For 66552/66552 co-relation queries the response was YES. [2024-06-27 23:38:23,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 773 events. 441/773 cut-off events. For 66552/66552 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3286 event pairs, 98 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 5937. Up to 560 conditions per place. [2024-06-27 23:38:23,103 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 61 changer transitions 0/189 dead transitions. [2024-06-27 23:38:23,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 189 transitions, 2397 flow [2024-06-27 23:38:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:38:23,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:38:23,104 INFO L175 Difference]: Start difference. First operand has 192 places, 168 transitions, 1747 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:38:23,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 189 transitions, 2397 flow [2024-06-27 23:38:23,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 189 transitions, 2337 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:23,225 INFO L231 Difference]: Finished difference. Result has 195 places, 172 transitions, 1838 flow [2024-06-27 23:38:23,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1838, PETRI_PLACES=195, PETRI_TRANSITIONS=172} [2024-06-27 23:38:23,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-27 23:38:23,225 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 172 transitions, 1838 flow [2024-06-27 23:38:23,226 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) [2024-06-27 23:38:23,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:23,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:23,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:38:23,226 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)] === [2024-06-27 23:38:23,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash -106778712, now seen corresponding path program 5 times [2024-06-27 23:38:23,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:23,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166408803] [2024-06-27 23:38:23,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:23,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:24,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166408803] [2024-06-27 23:38:24,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166408803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:24,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:24,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:24,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84330486] [2024-06-27 23:38:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:24,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:24,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:25,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:25,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 172 transitions, 1838 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) [2024-06-27 23:38:25,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:25,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:25,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:25,610 INFO L124 PetriNetUnfolderBase]: 432/767 cut-off events. [2024-06-27 23:38:25,610 INFO L125 PetriNetUnfolderBase]: For 70902/70902 co-relation queries the response was YES. [2024-06-27 23:38:25,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6163 conditions, 767 events. 432/767 cut-off events. For 70902/70902 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3303 event pairs, 65 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 6073. Up to 532 conditions per place. [2024-06-27 23:38:25,617 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 59 changer transitions 0/193 dead transitions. [2024-06-27 23:38:25,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 193 transitions, 2472 flow [2024-06-27 23:38:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:38:25,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:38:25,619 INFO L175 Difference]: Start difference. First operand has 195 places, 172 transitions, 1838 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:38:25,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 193 transitions, 2472 flow [2024-06-27 23:38:25,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 193 transitions, 2390 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:25,728 INFO L231 Difference]: Finished difference. Result has 199 places, 176 transitions, 1915 flow [2024-06-27 23:38:25,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1915, PETRI_PLACES=199, PETRI_TRANSITIONS=176} [2024-06-27 23:38:25,729 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-27 23:38:25,729 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 176 transitions, 1915 flow [2024-06-27 23:38:25,729 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) [2024-06-27 23:38:25,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:25,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:38:25,729 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)] === [2024-06-27 23:38:25,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:25,730 INFO L85 PathProgramCache]: Analyzing trace with hash 470750544, now seen corresponding path program 3 times [2024-06-27 23:38:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:25,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852719076] [2024-06-27 23:38:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:27,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:27,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852719076] [2024-06-27 23:38:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852719076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:27,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:27,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848702481] [2024-06-27 23:38:27,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:27,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:27,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:27,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 176 transitions, 1915 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) [2024-06-27 23:38:27,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:27,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:27,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:28,099 INFO L124 PetriNetUnfolderBase]: 452/792 cut-off events. [2024-06-27 23:38:28,099 INFO L125 PetriNetUnfolderBase]: For 73451/73451 co-relation queries the response was YES. [2024-06-27 23:38:28,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 792 events. 452/792 cut-off events. For 73451/73451 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3376 event pairs, 96 based on Foata normal form. 1/793 useless extension candidates. Maximal degree in co-relation 6264. Up to 577 conditions per place. [2024-06-27 23:38:28,105 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 66 changer transitions 0/194 dead transitions. [2024-06-27 23:38:28,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 194 transitions, 2569 flow [2024-06-27 23:38:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:38:28,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:38:28,107 INFO L175 Difference]: Start difference. First operand has 199 places, 176 transitions, 1915 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:38:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 194 transitions, 2569 flow [2024-06-27 23:38:28,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 2478 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:28,228 INFO L231 Difference]: Finished difference. Result has 203 places, 178 transitions, 1975 flow [2024-06-27 23:38:28,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1975, PETRI_PLACES=203, PETRI_TRANSITIONS=178} [2024-06-27 23:38:28,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-27 23:38:28,229 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 178 transitions, 1975 flow [2024-06-27 23:38:28,229 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) [2024-06-27 23:38:28,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:28,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:38:28,230 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)] === [2024-06-27 23:38:28,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -102137082, now seen corresponding path program 6 times [2024-06-27 23:38:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283719581] [2024-06-27 23:38:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:30,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:30,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283719581] [2024-06-27 23:38:30,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283719581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:30,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:30,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:30,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946895098] [2024-06-27 23:38:30,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:30,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:30,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:30,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:30,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 178 transitions, 1975 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) [2024-06-27 23:38:30,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:30,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:30,620 INFO L124 PetriNetUnfolderBase]: 433/770 cut-off events. [2024-06-27 23:38:30,620 INFO L125 PetriNetUnfolderBase]: For 75154/75154 co-relation queries the response was YES. [2024-06-27 23:38:30,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6265 conditions, 770 events. 433/770 cut-off events. For 75154/75154 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3296 event pairs, 64 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 6173. Up to 533 conditions per place. [2024-06-27 23:38:30,626 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 108 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-27 23:38:30,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 193 transitions, 2463 flow [2024-06-27 23:38:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:38:30,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:38:30,628 INFO L175 Difference]: Start difference. First operand has 203 places, 178 transitions, 1975 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:38:30,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 193 transitions, 2463 flow [2024-06-27 23:38:30,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 193 transitions, 2338 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:30,769 INFO L231 Difference]: Finished difference. Result has 206 places, 178 transitions, 1979 flow [2024-06-27 23:38:30,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1979, PETRI_PLACES=206, PETRI_TRANSITIONS=178} [2024-06-27 23:38:30,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-27 23:38:30,770 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 178 transitions, 1979 flow [2024-06-27 23:38:30,770 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) [2024-06-27 23:38:30,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:30,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:38:30,771 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)] === [2024-06-27 23:38:30,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 451975704, now seen corresponding path program 4 times [2024-06-27 23:38:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270436742] [2024-06-27 23:38:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:32,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270436742] [2024-06-27 23:38:32,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270436742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905575828] [2024-06-27 23:38:32,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:32,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:32,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:32,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 178 transitions, 1979 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) [2024-06-27 23:38:32,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:32,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:32,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:33,075 INFO L124 PetriNetUnfolderBase]: 448/786 cut-off events. [2024-06-27 23:38:33,076 INFO L125 PetriNetUnfolderBase]: For 75923/75923 co-relation queries the response was YES. [2024-06-27 23:38:33,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6342 conditions, 786 events. 448/786 cut-off events. For 75923/75923 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3353 event pairs, 96 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 6249. Up to 572 conditions per place. [2024-06-27 23:38:33,082 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 64 changer transitions 0/193 dead transitions. [2024-06-27 23:38:33,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 193 transitions, 2511 flow [2024-06-27 23:38:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:38:33,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:38:33,085 INFO L175 Difference]: Start difference. First operand has 206 places, 178 transitions, 1979 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:38:33,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 193 transitions, 2511 flow [2024-06-27 23:38:33,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 193 transitions, 2372 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:33,224 INFO L231 Difference]: Finished difference. Result has 207 places, 178 transitions, 1973 flow [2024-06-27 23:38:33,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1973, PETRI_PLACES=207, PETRI_TRANSITIONS=178} [2024-06-27 23:38:33,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-27 23:38:33,225 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 178 transitions, 1973 flow [2024-06-27 23:38:33,225 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) [2024-06-27 23:38:33,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:33,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:38:33,226 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)] === [2024-06-27 23:38:33,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash 451982462, now seen corresponding path program 1 times [2024-06-27 23:38:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:33,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230310654] [2024-06-27 23:38:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:35,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:35,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:35,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230310654] [2024-06-27 23:38:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230310654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866893402] [2024-06-27 23:38:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:35,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:35,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:35,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:35,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 178 transitions, 1973 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) [2024-06-27 23:38:35,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:35,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:35,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:35,544 INFO L124 PetriNetUnfolderBase]: 451/791 cut-off events. [2024-06-27 23:38:35,544 INFO L125 PetriNetUnfolderBase]: For 78476/78476 co-relation queries the response was YES. [2024-06-27 23:38:35,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 791 events. 451/791 cut-off events. For 78476/78476 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3382 event pairs, 106 based on Foata normal form. 1/792 useless extension candidates. Maximal degree in co-relation 6305. Up to 623 conditions per place. [2024-06-27 23:38:35,551 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 143 selfloop transitions, 52 changer transitions 0/197 dead transitions. [2024-06-27 23:38:35,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2539 flow [2024-06-27 23:38:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:38:35,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:38:35,552 INFO L175 Difference]: Start difference. First operand has 207 places, 178 transitions, 1973 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:38:35,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2539 flow [2024-06-27 23:38:35,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 197 transitions, 2392 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:38:35,694 INFO L231 Difference]: Finished difference. Result has 206 places, 182 transitions, 1963 flow [2024-06-27 23:38:35,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1963, PETRI_PLACES=206, PETRI_TRANSITIONS=182} [2024-06-27 23:38:35,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-27 23:38:35,694 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 182 transitions, 1963 flow [2024-06-27 23:38:35,695 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) [2024-06-27 23:38:35,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:35,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:35,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:38:35,695 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)] === [2024-06-27 23:38:35,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:35,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1086591680, now seen corresponding path program 7 times [2024-06-27 23:38:35,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:35,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104501681] [2024-06-27 23:38:35,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:35,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:37,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104501681] [2024-06-27 23:38:37,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104501681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:37,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:37,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982635237] [2024-06-27 23:38:37,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:37,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:37,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:37,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:37,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 182 transitions, 1963 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) [2024-06-27 23:38:37,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:37,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:37,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:38,463 INFO L124 PetriNetUnfolderBase]: 440/782 cut-off events. [2024-06-27 23:38:38,464 INFO L125 PetriNetUnfolderBase]: For 81442/81442 co-relation queries the response was YES. [2024-06-27 23:38:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6412 conditions, 782 events. 440/782 cut-off events. For 81442/81442 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3371 event pairs, 61 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 6318. Up to 640 conditions per place. [2024-06-27 23:38:38,469 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 145 selfloop transitions, 33 changer transitions 0/201 dead transitions. [2024-06-27 23:38:38,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 201 transitions, 2404 flow [2024-06-27 23:38:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:38:38,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:38:38,470 INFO L175 Difference]: Start difference. First operand has 206 places, 182 transitions, 1963 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:38:38,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 201 transitions, 2404 flow [2024-06-27 23:38:38,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 201 transitions, 2356 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:38,627 INFO L231 Difference]: Finished difference. Result has 211 places, 186 transitions, 2033 flow [2024-06-27 23:38:38,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2033, PETRI_PLACES=211, PETRI_TRANSITIONS=186} [2024-06-27 23:38:38,627 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-27 23:38:38,627 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 186 transitions, 2033 flow [2024-06-27 23:38:38,628 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) [2024-06-27 23:38:38,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:38,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:38:38,628 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)] === [2024-06-27 23:38:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1086711836, now seen corresponding path program 5 times [2024-06-27 23:38:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664462428] [2024-06-27 23:38:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664462428] [2024-06-27 23:38:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664462428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126456897] [2024-06-27 23:38:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:40,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:40,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 186 transitions, 2033 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) [2024-06-27 23:38:40,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:40,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:40,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:41,279 INFO L124 PetriNetUnfolderBase]: 466/813 cut-off events. [2024-06-27 23:38:41,279 INFO L125 PetriNetUnfolderBase]: For 85590/85590 co-relation queries the response was YES. [2024-06-27 23:38:41,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6713 conditions, 813 events. 466/813 cut-off events. For 85590/85590 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3464 event pairs, 73 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 6616. Up to 599 conditions per place. [2024-06-27 23:38:41,286 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 141 selfloop transitions, 63 changer transitions 0/206 dead transitions. [2024-06-27 23:38:41,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 206 transitions, 2747 flow [2024-06-27 23:38:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:41,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:38:41,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:38:41,287 INFO L175 Difference]: Start difference. First operand has 211 places, 186 transitions, 2033 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:38:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 206 transitions, 2747 flow [2024-06-27 23:38:41,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 206 transitions, 2654 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:41,460 INFO L231 Difference]: Finished difference. Result has 211 places, 190 transitions, 2099 flow [2024-06-27 23:38:41,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2099, PETRI_PLACES=211, PETRI_TRANSITIONS=190} [2024-06-27 23:38:41,461 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-27 23:38:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 190 transitions, 2099 flow [2024-06-27 23:38:41,461 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) [2024-06-27 23:38:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:38:41,461 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)] === [2024-06-27 23:38:41,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1086711650, now seen corresponding path program 8 times [2024-06-27 23:38:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682045593] [2024-06-27 23:38:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:43,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:43,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682045593] [2024-06-27 23:38:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682045593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:43,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:43,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373023903] [2024-06-27 23:38:43,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:43,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:43,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:43,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 190 transitions, 2099 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) [2024-06-27 23:38:43,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:43,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:43,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:44,189 INFO L124 PetriNetUnfolderBase]: 456/808 cut-off events. [2024-06-27 23:38:44,189 INFO L125 PetriNetUnfolderBase]: For 90703/90703 co-relation queries the response was YES. [2024-06-27 23:38:44,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 808 events. 456/808 cut-off events. For 90703/90703 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3529 event pairs, 73 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 6737. Up to 560 conditions per place. [2024-06-27 23:38:44,196 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 121 selfloop transitions, 64 changer transitions 0/210 dead transitions. [2024-06-27 23:38:44,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 210 transitions, 2791 flow [2024-06-27 23:38:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:38:44,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:38:44,197 INFO L175 Difference]: Start difference. First operand has 211 places, 190 transitions, 2099 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:38:44,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 210 transitions, 2791 flow [2024-06-27 23:38:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 210 transitions, 2700 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:44,371 INFO L231 Difference]: Finished difference. Result has 216 places, 194 transitions, 2181 flow [2024-06-27 23:38:44,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2181, PETRI_PLACES=216, PETRI_TRANSITIONS=194} [2024-06-27 23:38:44,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 184 predicate places. [2024-06-27 23:38:44,372 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 194 transitions, 2181 flow [2024-06-27 23:38:44,372 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) [2024-06-27 23:38:44,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:44,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:44,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:38:44,372 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)] === [2024-06-27 23:38:44,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash 802891844, now seen corresponding path program 6 times [2024-06-27 23:38:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:44,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345455657] [2024-06-27 23:38:44,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:44,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:46,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:46,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345455657] [2024-06-27 23:38:46,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345455657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:46,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:46,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238303187] [2024-06-27 23:38:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:46,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:46,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:46,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:46,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 194 transitions, 2181 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) [2024-06-27 23:38:46,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:46,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:46,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:47,056 INFO L124 PetriNetUnfolderBase]: 482/839 cut-off events. [2024-06-27 23:38:47,056 INFO L125 PetriNetUnfolderBase]: For 95359/95359 co-relation queries the response was YES. [2024-06-27 23:38:47,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 839 events. 482/839 cut-off events. For 95359/95359 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3604 event pairs, 73 based on Foata normal form. 1/840 useless extension candidates. Maximal degree in co-relation 7020. Up to 622 conditions per place. [2024-06-27 23:38:47,064 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 64 changer transitions 0/214 dead transitions. [2024-06-27 23:38:47,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 214 transitions, 3043 flow [2024-06-27 23:38:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:38:47,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-27 23:38:47,067 INFO L175 Difference]: Start difference. First operand has 216 places, 194 transitions, 2181 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:38:47,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 214 transitions, 3043 flow [2024-06-27 23:38:47,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 214 transitions, 2939 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:47,289 INFO L231 Difference]: Finished difference. Result has 219 places, 198 transitions, 2242 flow [2024-06-27 23:38:47,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2242, PETRI_PLACES=219, PETRI_TRANSITIONS=198} [2024-06-27 23:38:47,290 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 187 predicate places. [2024-06-27 23:38:47,290 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 198 transitions, 2242 flow [2024-06-27 23:38:47,290 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) [2024-06-27 23:38:47,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:47,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:47,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:38:47,290 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)] === [2024-06-27 23:38:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 802891658, now seen corresponding path program 9 times [2024-06-27 23:38:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:47,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777899077] [2024-06-27 23:38:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:49,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777899077] [2024-06-27 23:38:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777899077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:49,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:49,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937887037] [2024-06-27 23:38:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:49,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 198 transitions, 2242 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) [2024-06-27 23:38:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:49,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:49,950 INFO L124 PetriNetUnfolderBase]: 467/826 cut-off events. [2024-06-27 23:38:49,950 INFO L125 PetriNetUnfolderBase]: For 99071/99071 co-relation queries the response was YES. [2024-06-27 23:38:49,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 826 events. 467/826 cut-off events. For 99071/99071 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3626 event pairs, 73 based on Foata normal form. 1/827 useless extension candidates. Maximal degree in co-relation 6997. Up to 572 conditions per place. [2024-06-27 23:38:49,957 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 123 selfloop transitions, 65 changer transitions 0/215 dead transitions. [2024-06-27 23:38:49,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 215 transitions, 2926 flow [2024-06-27 23:38:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:38:49,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:38:49,959 INFO L175 Difference]: Start difference. First operand has 219 places, 198 transitions, 2242 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:38:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 215 transitions, 2926 flow [2024-06-27 23:38:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 215 transitions, 2814 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:50,138 INFO L231 Difference]: Finished difference. Result has 224 places, 200 transitions, 2287 flow [2024-06-27 23:38:50,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2287, PETRI_PLACES=224, PETRI_TRANSITIONS=200} [2024-06-27 23:38:50,139 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-27 23:38:50,139 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 200 transitions, 2287 flow [2024-06-27 23:38:50,139 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) [2024-06-27 23:38:50,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:50,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:50,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:38:50,140 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)] === [2024-06-27 23:38:50,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:50,140 INFO L85 PathProgramCache]: Analyzing trace with hash 802898602, now seen corresponding path program 2 times [2024-06-27 23:38:50,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:50,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646106636] [2024-06-27 23:38:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:50,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:52,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:52,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646106636] [2024-06-27 23:38:52,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646106636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:52,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:52,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:52,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51976882] [2024-06-27 23:38:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:52,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:52,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:52,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 200 transitions, 2287 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) [2024-06-27 23:38:52,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:52,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:52,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:52,741 INFO L124 PetriNetUnfolderBase]: 493/860 cut-off events. [2024-06-27 23:38:52,741 INFO L125 PetriNetUnfolderBase]: For 104002/104002 co-relation queries the response was YES. [2024-06-27 23:38:52,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7384 conditions, 860 events. 493/860 cut-off events. For 104002/104002 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3746 event pairs, 109 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 7283. Up to 689 conditions per place. [2024-06-27 23:38:52,748 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 171 selfloop transitions, 46 changer transitions 0/219 dead transitions. [2024-06-27 23:38:52,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 219 transitions, 3039 flow [2024-06-27 23:38:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:38:52,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:38:52,749 INFO L175 Difference]: Start difference. First operand has 224 places, 200 transitions, 2287 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:38:52,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 219 transitions, 3039 flow [2024-06-27 23:38:52,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 219 transitions, 2912 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:52,931 INFO L231 Difference]: Finished difference. Result has 226 places, 204 transitions, 2285 flow [2024-06-27 23:38:52,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2285, PETRI_PLACES=226, PETRI_TRANSITIONS=204} [2024-06-27 23:38:52,932 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-06-27 23:38:52,932 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 204 transitions, 2285 flow [2024-06-27 23:38:52,932 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) [2024-06-27 23:38:52,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:52,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:52,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:38:52,933 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)] === [2024-06-27 23:38:52,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 802898354, now seen corresponding path program 7 times [2024-06-27 23:38:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:52,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513549361] [2024-06-27 23:38:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:52,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:54,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513549361] [2024-06-27 23:38:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513549361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:54,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025535036] [2024-06-27 23:38:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:54,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:54,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:54,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:55,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:55,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 204 transitions, 2285 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) [2024-06-27 23:38:55,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:55,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:55,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:55,585 INFO L124 PetriNetUnfolderBase]: 491/854 cut-off events. [2024-06-27 23:38:55,585 INFO L125 PetriNetUnfolderBase]: For 104912/104912 co-relation queries the response was YES. [2024-06-27 23:38:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 854 events. 491/854 cut-off events. For 104912/104912 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3695 event pairs, 73 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7223. Up to 638 conditions per place. [2024-06-27 23:38:55,593 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 152 selfloop transitions, 65 changer transitions 0/219 dead transitions. [2024-06-27 23:38:55,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 219 transitions, 3013 flow [2024-06-27 23:38:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:38:55,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:38:55,594 INFO L175 Difference]: Start difference. First operand has 226 places, 204 transitions, 2285 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:38:55,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 219 transitions, 3013 flow [2024-06-27 23:38:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 219 transitions, 2948 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:55,795 INFO L231 Difference]: Finished difference. Result has 230 places, 204 transitions, 2355 flow [2024-06-27 23:38:55,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2355, PETRI_PLACES=230, PETRI_TRANSITIONS=204} [2024-06-27 23:38:55,796 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 198 predicate places. [2024-06-27 23:38:55,796 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 204 transitions, 2355 flow [2024-06-27 23:38:55,796 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) [2024-06-27 23:38:55,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:55,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:55,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:38:55,797 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)] === [2024-06-27 23:38:55,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1554827890, now seen corresponding path program 8 times [2024-06-27 23:38:55,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:55,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787981482] [2024-06-27 23:38:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:55,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787981482] [2024-06-27 23:38:57,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787981482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:57,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:57,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:57,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437665523] [2024-06-27 23:38:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:57,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:57,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:38:57,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 204 transitions, 2355 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) [2024-06-27 23:38:57,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:57,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:38:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:58,468 INFO L124 PetriNetUnfolderBase]: 499/868 cut-off events. [2024-06-27 23:38:58,468 INFO L125 PetriNetUnfolderBase]: For 110765/110765 co-relation queries the response was YES. [2024-06-27 23:38:58,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7546 conditions, 868 events. 499/868 cut-off events. For 110765/110765 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3756 event pairs, 66 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 7444. Up to 648 conditions per place. [2024-06-27 23:38:58,475 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 150 selfloop transitions, 71 changer transitions 0/223 dead transitions. [2024-06-27 23:38:58,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 223 transitions, 3267 flow [2024-06-27 23:38:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:38:58,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:38:58,477 INFO L175 Difference]: Start difference. First operand has 230 places, 204 transitions, 2355 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:38:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 223 transitions, 3267 flow [2024-06-27 23:38:58,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 223 transitions, 3124 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:58,661 INFO L231 Difference]: Finished difference. Result has 231 places, 208 transitions, 2403 flow [2024-06-27 23:38:58,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2403, PETRI_PLACES=231, PETRI_TRANSITIONS=208} [2024-06-27 23:38:58,662 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-27 23:38:58,662 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 208 transitions, 2403 flow [2024-06-27 23:38:58,662 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) [2024-06-27 23:38:58,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:58,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:58,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:38:58,663 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)] === [2024-06-27 23:38:58,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash 973009908, now seen corresponding path program 3 times [2024-06-27 23:38:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:58,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710507638] [2024-06-27 23:38:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:58,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:00,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:00,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710507638] [2024-06-27 23:39:00,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710507638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:00,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:00,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085356613] [2024-06-27 23:39:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:00,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:00,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:00,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 208 transitions, 2403 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) [2024-06-27 23:39:00,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:00,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:00,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:01,277 INFO L124 PetriNetUnfolderBase]: 502/876 cut-off events. [2024-06-27 23:39:01,277 INFO L125 PetriNetUnfolderBase]: For 114141/114141 co-relation queries the response was YES. [2024-06-27 23:39:01,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7623 conditions, 876 events. 502/876 cut-off events. For 114141/114141 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3840 event pairs, 105 based on Foata normal form. 1/877 useless extension candidates. Maximal degree in co-relation 7520. Up to 703 conditions per place. [2024-06-27 23:39:01,285 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 173 selfloop transitions, 49 changer transitions 0/224 dead transitions. [2024-06-27 23:39:01,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 224 transitions, 3161 flow [2024-06-27 23:39:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:39:01,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:39:01,288 INFO L175 Difference]: Start difference. First operand has 231 places, 208 transitions, 2403 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:39:01,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 224 transitions, 3161 flow [2024-06-27 23:39:01,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 224 transitions, 3015 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:01,500 INFO L231 Difference]: Finished difference. Result has 234 places, 210 transitions, 2376 flow [2024-06-27 23:39:01,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2376, PETRI_PLACES=234, PETRI_TRANSITIONS=210} [2024-06-27 23:39:01,501 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-27 23:39:01,501 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 210 transitions, 2376 flow [2024-06-27 23:39:01,501 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) [2024-06-27 23:39:01,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:01,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:39:01,502 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)] === [2024-06-27 23:39:01,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 975381548, now seen corresponding path program 10 times [2024-06-27 23:39:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191442297] [2024-06-27 23:39:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:01,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:03,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:03,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191442297] [2024-06-27 23:39:03,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191442297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:03,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:03,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065116245] [2024-06-27 23:39:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:03,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:03,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:03,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:03,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 210 transitions, 2376 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) [2024-06-27 23:39:03,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:03,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:03,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:04,105 INFO L124 PetriNetUnfolderBase]: 480/850 cut-off events. [2024-06-27 23:39:04,105 INFO L125 PetriNetUnfolderBase]: For 115546/115546 co-relation queries the response was YES. [2024-06-27 23:39:04,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 850 events. 480/850 cut-off events. For 115546/115546 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3761 event pairs, 68 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 7334. Up to 592 conditions per place. [2024-06-27 23:39:04,112 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 123 selfloop transitions, 71 changer transitions 0/223 dead transitions. [2024-06-27 23:39:04,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 223 transitions, 2930 flow [2024-06-27 23:39:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:39:04,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:39:04,113 INFO L175 Difference]: Start difference. First operand has 234 places, 210 transitions, 2376 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:39:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 223 transitions, 2930 flow [2024-06-27 23:39:04,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 223 transitions, 2822 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:04,318 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2415 flow [2024-06-27 23:39:04,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-27 23:39:04,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-27 23:39:04,319 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2415 flow [2024-06-27 23:39:04,319 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) [2024-06-27 23:39:04,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:04,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:04,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:39:04,320 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)] === [2024-06-27 23:39:04,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:04,320 INFO L85 PathProgramCache]: Analyzing trace with hash 975381734, now seen corresponding path program 9 times [2024-06-27 23:39:04,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:04,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053887686] [2024-06-27 23:39:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:04,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053887686] [2024-06-27 23:39:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053887686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:06,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:06,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:06,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891319903] [2024-06-27 23:39:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:06,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:06,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:06,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2415 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) [2024-06-27 23:39:06,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:06,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:06,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:07,078 INFO L124 PetriNetUnfolderBase]: 498/867 cut-off events. [2024-06-27 23:39:07,078 INFO L125 PetriNetUnfolderBase]: For 116225/116225 co-relation queries the response was YES. [2024-06-27 23:39:07,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7558 conditions, 867 events. 498/867 cut-off events. For 116225/116225 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3755 event pairs, 66 based on Foata normal form. 1/868 useless extension candidates. Maximal degree in co-relation 7452. Up to 648 conditions per place. [2024-06-27 23:39:07,086 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 150 selfloop transitions, 72 changer transitions 0/224 dead transitions. [2024-06-27 23:39:07,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 224 transitions, 3165 flow [2024-06-27 23:39:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:39:07,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:39:07,087 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2415 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:39:07,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 224 transitions, 3165 flow [2024-06-27 23:39:07,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 224 transitions, 2994 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:39:07,334 INFO L231 Difference]: Finished difference. Result has 236 places, 210 transitions, 2393 flow [2024-06-27 23:39:07,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2393, PETRI_PLACES=236, PETRI_TRANSITIONS=210} [2024-06-27 23:39:07,334 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-27 23:39:07,335 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 210 transitions, 2393 flow [2024-06-27 23:39:07,335 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) [2024-06-27 23:39:07,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:07,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:07,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:39:07,335 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)] === [2024-06-27 23:39:07,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash 973248918, now seen corresponding path program 4 times [2024-06-27 23:39:07,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:07,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587918208] [2024-06-27 23:39:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:07,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:09,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587918208] [2024-06-27 23:39:09,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587918208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:09,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153686536] [2024-06-27 23:39:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:09,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:09,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:09,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:09,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 210 transitions, 2393 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) [2024-06-27 23:39:09,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:09,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:09,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:10,004 INFO L124 PetriNetUnfolderBase]: 501/875 cut-off events. [2024-06-27 23:39:10,004 INFO L125 PetriNetUnfolderBase]: For 119418/119418 co-relation queries the response was YES. [2024-06-27 23:39:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 875 events. 501/875 cut-off events. For 119418/119418 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3841 event pairs, 105 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 7509. Up to 701 conditions per place. [2024-06-27 23:39:10,012 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 168 selfloop transitions, 56 changer transitions 0/226 dead transitions. [2024-06-27 23:39:10,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 226 transitions, 3167 flow [2024-06-27 23:39:10,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:39:10,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:39:10,013 INFO L175 Difference]: Start difference. First operand has 236 places, 210 transitions, 2393 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:39:10,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 226 transitions, 3167 flow [2024-06-27 23:39:10,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 226 transitions, 3009 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:10,264 INFO L231 Difference]: Finished difference. Result has 237 places, 212 transitions, 2368 flow [2024-06-27 23:39:10,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2368, PETRI_PLACES=237, PETRI_TRANSITIONS=212} [2024-06-27 23:39:10,265 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-27 23:39:10,265 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 212 transitions, 2368 flow [2024-06-27 23:39:10,265 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) [2024-06-27 23:39:10,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:10,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:39:10,266 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)] === [2024-06-27 23:39:10,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:10,266 INFO L85 PathProgramCache]: Analyzing trace with hash 975627812, now seen corresponding path program 1 times [2024-06-27 23:39:10,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120381313] [2024-06-27 23:39:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:12,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120381313] [2024-06-27 23:39:12,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120381313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:12,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:12,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616353474] [2024-06-27 23:39:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:12,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:12,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 212 transitions, 2368 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) [2024-06-27 23:39:12,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:12,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:12,813 INFO L124 PetriNetUnfolderBase]: 487/864 cut-off events. [2024-06-27 23:39:12,813 INFO L125 PetriNetUnfolderBase]: For 128280/128281 co-relation queries the response was YES. [2024-06-27 23:39:12,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7600 conditions, 864 events. 487/864 cut-off events. For 128280/128281 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3895 event pairs, 118 based on Foata normal form. 3/865 useless extension candidates. Maximal degree in co-relation 7493. Up to 693 conditions per place. [2024-06-27 23:39:12,821 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 40 changer transitions 0/233 dead transitions. [2024-06-27 23:39:12,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 233 transitions, 3002 flow [2024-06-27 23:39:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:39:12,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:39:12,822 INFO L175 Difference]: Start difference. First operand has 237 places, 212 transitions, 2368 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:39:12,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 233 transitions, 3002 flow [2024-06-27 23:39:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 233 transitions, 2898 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:13,102 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 2415 flow [2024-06-27 23:39:13,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2415, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2024-06-27 23:39:13,103 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-27 23:39:13,103 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 2415 flow [2024-06-27 23:39:13,103 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) [2024-06-27 23:39:13,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:13,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:13,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:39:13,103 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)] === [2024-06-27 23:39:13,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash 975619132, now seen corresponding path program 5 times [2024-06-27 23:39:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:13,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072906292] [2024-06-27 23:39:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:13,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:15,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:15,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072906292] [2024-06-27 23:39:15,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072906292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:15,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:15,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:15,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779574815] [2024-06-27 23:39:15,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:15,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:15,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:15,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:15,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 2415 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) [2024-06-27 23:39:15,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:15,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:15,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:15,823 INFO L124 PetriNetUnfolderBase]: 510/890 cut-off events. [2024-06-27 23:39:15,824 INFO L125 PetriNetUnfolderBase]: For 125762/125762 co-relation queries the response was YES. [2024-06-27 23:39:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 890 events. 510/890 cut-off events. For 125762/125762 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3903 event pairs, 104 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 7703. Up to 717 conditions per place. [2024-06-27 23:39:15,831 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 176 selfloop transitions, 53 changer transitions 0/231 dead transitions. [2024-06-27 23:39:15,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 231 transitions, 3047 flow [2024-06-27 23:39:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:39:15,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:39:15,832 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 2415 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:39:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 231 transitions, 3047 flow [2024-06-27 23:39:16,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 231 transitions, 3013 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:16,072 INFO L231 Difference]: Finished difference. Result has 246 places, 218 transitions, 2492 flow [2024-06-27 23:39:16,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2492, PETRI_PLACES=246, PETRI_TRANSITIONS=218} [2024-06-27 23:39:16,073 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-27 23:39:16,073 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 218 transitions, 2492 flow [2024-06-27 23:39:16,073 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) [2024-06-27 23:39:16,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:16,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:16,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:39:16,073 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)] === [2024-06-27 23:39:16,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 975618884, now seen corresponding path program 10 times [2024-06-27 23:39:16,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:16,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806359522] [2024-06-27 23:39:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:16,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:18,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:18,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:18,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806359522] [2024-06-27 23:39:18,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806359522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:18,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:18,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:18,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673121528] [2024-06-27 23:39:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:18,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:18,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:18,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 218 transitions, 2492 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) [2024-06-27 23:39:18,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:18,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:18,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:18,727 INFO L124 PetriNetUnfolderBase]: 508/884 cut-off events. [2024-06-27 23:39:18,727 INFO L125 PetriNetUnfolderBase]: For 126754/126754 co-relation queries the response was YES. [2024-06-27 23:39:18,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7831 conditions, 884 events. 508/884 cut-off events. For 126754/126754 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3854 event pairs, 65 based on Foata normal form. 1/885 useless extension candidates. Maximal degree in co-relation 7719. Up to 666 conditions per place. [2024-06-27 23:39:18,735 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 151 selfloop transitions, 78 changer transitions 0/231 dead transitions. [2024-06-27 23:39:18,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 231 transitions, 3126 flow [2024-06-27 23:39:18,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:39:18,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:39:18,736 INFO L175 Difference]: Start difference. First operand has 246 places, 218 transitions, 2492 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:39:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 231 transitions, 3126 flow [2024-06-27 23:39:19,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 231 transitions, 2996 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:19,009 INFO L231 Difference]: Finished difference. Result has 246 places, 218 transitions, 2523 flow [2024-06-27 23:39:19,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2523, PETRI_PLACES=246, PETRI_TRANSITIONS=218} [2024-06-27 23:39:19,009 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-27 23:39:19,009 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 218 transitions, 2523 flow [2024-06-27 23:39:19,009 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) [2024-06-27 23:39:19,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:19,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:19,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:39:19,010 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)] === [2024-06-27 23:39:19,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:19,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2000200036, now seen corresponding path program 11 times [2024-06-27 23:39:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:19,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802990025] [2024-06-27 23:39:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:19,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:20,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802990025] [2024-06-27 23:39:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802990025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:20,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:20,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:20,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015260504] [2024-06-27 23:39:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:20,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:20,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:20,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:20,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:20,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 218 transitions, 2523 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) [2024-06-27 23:39:20,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:20,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:20,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:20,922 INFO L124 PetriNetUnfolderBase]: 485/862 cut-off events. [2024-06-27 23:39:20,922 INFO L125 PetriNetUnfolderBase]: For 128309/128309 co-relation queries the response was YES. [2024-06-27 23:39:20,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7711 conditions, 862 events. 485/862 cut-off events. For 128309/128309 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3867 event pairs, 141 based on Foata normal form. 1/863 useless extension candidates. Maximal degree in co-relation 7598. Up to 759 conditions per place. [2024-06-27 23:39:20,930 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 186 selfloop transitions, 16 changer transitions 0/231 dead transitions. [2024-06-27 23:39:20,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 231 transitions, 2976 flow [2024-06-27 23:39:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:39:20,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-27 23:39:20,931 INFO L175 Difference]: Start difference. First operand has 246 places, 218 transitions, 2523 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:39:20,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 231 transitions, 2976 flow [2024-06-27 23:39:21,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 231 transitions, 2800 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:21,244 INFO L231 Difference]: Finished difference. Result has 247 places, 219 transitions, 2404 flow [2024-06-27 23:39:21,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2404, PETRI_PLACES=247, PETRI_TRANSITIONS=219} [2024-06-27 23:39:21,244 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 215 predicate places. [2024-06-27 23:39:21,244 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 219 transitions, 2404 flow [2024-06-27 23:39:21,245 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) [2024-06-27 23:39:21,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:21,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:21,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:39:21,245 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)] === [2024-06-27 23:39:21,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2000320192, now seen corresponding path program 11 times [2024-06-27 23:39:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787004574] [2024-06-27 23:39:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:22,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:22,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787004574] [2024-06-27 23:39:22,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787004574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:22,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:22,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:22,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600932477] [2024-06-27 23:39:22,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:22,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:22,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:22,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:22,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:22,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 219 transitions, 2404 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) [2024-06-27 23:39:22,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:22,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:22,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:22,965 INFO L124 PetriNetUnfolderBase]: 509/888 cut-off events. [2024-06-27 23:39:22,965 INFO L125 PetriNetUnfolderBase]: For 130946/130946 co-relation queries the response was YES. [2024-06-27 23:39:22,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 888 events. 509/888 cut-off events. For 130946/130946 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3909 event pairs, 155 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 7646. Up to 775 conditions per place. [2024-06-27 23:39:22,974 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2024-06-27 23:39:22,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 233 transitions, 3062 flow [2024-06-27 23:39:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:39:22,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-27 23:39:22,976 INFO L175 Difference]: Start difference. First operand has 247 places, 219 transitions, 2404 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:39:22,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 233 transitions, 3062 flow [2024-06-27 23:39:23,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 233 transitions, 2968 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:39:23,299 INFO L231 Difference]: Finished difference. Result has 246 places, 221 transitions, 2419 flow [2024-06-27 23:39:23,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2419, PETRI_PLACES=246, PETRI_TRANSITIONS=221} [2024-06-27 23:39:23,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-27 23:39:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 221 transitions, 2419 flow [2024-06-27 23:39:23,300 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) [2024-06-27 23:39:23,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:23,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:39:23,300 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)] === [2024-06-27 23:39:23,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1653450884, now seen corresponding path program 12 times [2024-06-27 23:39:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273308724] [2024-06-27 23:39:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:24,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273308724] [2024-06-27 23:39:24,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273308724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:24,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:24,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:24,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245586385] [2024-06-27 23:39:24,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:24,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:24,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:24,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:24,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:24,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 221 transitions, 2419 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) [2024-06-27 23:39:24,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:24,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:25,164 INFO L124 PetriNetUnfolderBase]: 491/872 cut-off events. [2024-06-27 23:39:25,164 INFO L125 PetriNetUnfolderBase]: For 134935/134935 co-relation queries the response was YES. [2024-06-27 23:39:25,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7739 conditions, 872 events. 491/872 cut-off events. For 134935/134935 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3919 event pairs, 142 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 7622. Up to 726 conditions per place. [2024-06-27 23:39:25,173 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 33 changer transitions 0/235 dead transitions. [2024-06-27 23:39:25,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 235 transitions, 3033 flow [2024-06-27 23:39:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:39:25,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:39:25,175 INFO L175 Difference]: Start difference. First operand has 246 places, 221 transitions, 2419 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:39:25,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 235 transitions, 3033 flow [2024-06-27 23:39:25,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 235 transitions, 2832 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:25,474 INFO L231 Difference]: Finished difference. Result has 246 places, 223 transitions, 2311 flow [2024-06-27 23:39:25,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2218, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2311, PETRI_PLACES=246, PETRI_TRANSITIONS=223} [2024-06-27 23:39:25,475 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-27 23:39:25,475 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 223 transitions, 2311 flow [2024-06-27 23:39:25,475 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) [2024-06-27 23:39:25,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:25,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:39:25,476 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)] === [2024-06-27 23:39:25,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2004968332, now seen corresponding path program 12 times [2024-06-27 23:39:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129483130] [2024-06-27 23:39:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129483130] [2024-06-27 23:39:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129483130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:26,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:26,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:26,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931853930] [2024-06-27 23:39:26,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:26,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:27,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:27,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 223 transitions, 2311 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) [2024-06-27 23:39:27,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:27,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:27,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:27,359 INFO L124 PetriNetUnfolderBase]: 520/906 cut-off events. [2024-06-27 23:39:27,359 INFO L125 PetriNetUnfolderBase]: For 140536/140536 co-relation queries the response was YES. [2024-06-27 23:39:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 906 events. 520/906 cut-off events. For 140536/140536 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4017 event pairs, 155 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7832. Up to 790 conditions per place. [2024-06-27 23:39:27,368 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 195 selfloop transitions, 42 changer transitions 0/239 dead transitions. [2024-06-27 23:39:27,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 239 transitions, 3143 flow [2024-06-27 23:39:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:27,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:39:27,370 INFO L175 Difference]: Start difference. First operand has 246 places, 223 transitions, 2311 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 239 transitions, 3143 flow [2024-06-27 23:39:27,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 239 transitions, 2975 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:27,687 INFO L231 Difference]: Finished difference. Result has 246 places, 227 transitions, 2256 flow [2024-06-27 23:39:27,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2256, PETRI_PLACES=246, PETRI_TRANSITIONS=227} [2024-06-27 23:39:27,688 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-27 23:39:27,688 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 227 transitions, 2256 flow [2024-06-27 23:39:27,688 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) [2024-06-27 23:39:27,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:27,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:27,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:39:27,689 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)] === [2024-06-27 23:39:27,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:27,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2004968580, now seen corresponding path program 6 times [2024-06-27 23:39:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:27,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043470323] [2024-06-27 23:39:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:27,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:29,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:29,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043470323] [2024-06-27 23:39:29,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043470323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:29,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:29,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:29,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129044147] [2024-06-27 23:39:29,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:29,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:29,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:29,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:29,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:29,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:29,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 227 transitions, 2256 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) [2024-06-27 23:39:29,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:29,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:29,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:29,399 INFO L124 PetriNetUnfolderBase]: 523/911 cut-off events. [2024-06-27 23:39:29,399 INFO L125 PetriNetUnfolderBase]: For 143774/143774 co-relation queries the response was YES. [2024-06-27 23:39:29,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 911 events. 523/911 cut-off events. For 143774/143774 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4066 event pairs, 156 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 7879. Up to 800 conditions per place. [2024-06-27 23:39:29,408 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 37 changer transitions 0/240 dead transitions. [2024-06-27 23:39:29,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 240 transitions, 2930 flow [2024-06-27 23:39:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-27 23:39:29,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-27 23:39:29,408 INFO L175 Difference]: Start difference. First operand has 246 places, 227 transitions, 2256 flow. Second operand 9 states and 111 transitions. [2024-06-27 23:39:29,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 240 transitions, 2930 flow [2024-06-27 23:39:29,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 240 transitions, 2870 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:29,742 INFO L231 Difference]: Finished difference. Result has 250 places, 229 transitions, 2291 flow [2024-06-27 23:39:29,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2291, PETRI_PLACES=250, PETRI_TRANSITIONS=229} [2024-06-27 23:39:29,743 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-27 23:39:29,743 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 229 transitions, 2291 flow [2024-06-27 23:39:29,743 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) [2024-06-27 23:39:29,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:29,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:29,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:39:29,743 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)] === [2024-06-27 23:39:29,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1658092514, now seen corresponding path program 13 times [2024-06-27 23:39:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:29,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326857637] [2024-06-27 23:39:29,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:31,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326857637] [2024-06-27 23:39:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326857637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357891207] [2024-06-27 23:39:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:31,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:31,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:31,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 229 transitions, 2291 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) [2024-06-27 23:39:31,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:31,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:31,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:31,544 INFO L124 PetriNetUnfolderBase]: 505/895 cut-off events. [2024-06-27 23:39:31,544 INFO L125 PetriNetUnfolderBase]: For 148028/148028 co-relation queries the response was YES. [2024-06-27 23:39:31,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7962 conditions, 895 events. 505/895 cut-off events. For 148028/148028 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4062 event pairs, 142 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 7842. Up to 743 conditions per place. [2024-06-27 23:39:31,552 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 177 selfloop transitions, 33 changer transitions 0/242 dead transitions. [2024-06-27 23:39:31,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 242 transitions, 2913 flow [2024-06-27 23:39:31,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:39:31,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:39:31,554 INFO L175 Difference]: Start difference. First operand has 250 places, 229 transitions, 2291 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:39:31,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 242 transitions, 2913 flow [2024-06-27 23:39:31,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 242 transitions, 2786 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:31,880 INFO L231 Difference]: Finished difference. Result has 251 places, 231 transitions, 2253 flow [2024-06-27 23:39:31,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2253, PETRI_PLACES=251, PETRI_TRANSITIONS=231} [2024-06-27 23:39:31,881 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-27 23:39:31,881 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 231 transitions, 2253 flow [2024-06-27 23:39:31,881 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) [2024-06-27 23:39:31,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:31,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:39:31,881 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)] === [2024-06-27 23:39:31,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1658092700, now seen corresponding path program 13 times [2024-06-27 23:39:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:31,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505599459] [2024-06-27 23:39:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:33,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505599459] [2024-06-27 23:39:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505599459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:33,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854046111] [2024-06-27 23:39:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:33,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:33,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:33,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:33,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:33,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 231 transitions, 2253 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) [2024-06-27 23:39:33,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:33,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:33,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:33,614 INFO L124 PetriNetUnfolderBase]: 524/913 cut-off events. [2024-06-27 23:39:33,615 INFO L125 PetriNetUnfolderBase]: For 148057/148057 co-relation queries the response was YES. [2024-06-27 23:39:33,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8004 conditions, 913 events. 524/913 cut-off events. For 148057/148057 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4069 event pairs, 155 based on Foata normal form. 1/914 useless extension candidates. Maximal degree in co-relation 7883. Up to 798 conditions per place. [2024-06-27 23:39:33,624 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 41 changer transitions 0/242 dead transitions. [2024-06-27 23:39:33,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 242 transitions, 2919 flow [2024-06-27 23:39:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:33,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:39:33,625 INFO L175 Difference]: Start difference. First operand has 251 places, 231 transitions, 2253 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:33,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 242 transitions, 2919 flow [2024-06-27 23:39:33,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 242 transitions, 2857 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:33,950 INFO L231 Difference]: Finished difference. Result has 254 places, 231 transitions, 2278 flow [2024-06-27 23:39:33,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2191, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2278, PETRI_PLACES=254, PETRI_TRANSITIONS=231} [2024-06-27 23:39:33,950 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-27 23:39:33,950 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 231 transitions, 2278 flow [2024-06-27 23:39:33,950 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) [2024-06-27 23:39:33,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:33,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:33,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:39:33,951 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)] === [2024-06-27 23:39:33,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1633977602, now seen corresponding path program 7 times [2024-06-27 23:39:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:33,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618944994] [2024-06-27 23:39:33,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618944994] [2024-06-27 23:39:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618944994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683153228] [2024-06-27 23:39:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:35,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:35,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:35,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:35,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 231 transitions, 2278 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) [2024-06-27 23:39:35,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:35,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:35,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:35,733 INFO L124 PetriNetUnfolderBase]: 532/926 cut-off events. [2024-06-27 23:39:35,733 INFO L125 PetriNetUnfolderBase]: For 155034/155034 co-relation queries the response was YES. [2024-06-27 23:39:35,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8199 conditions, 926 events. 532/926 cut-off events. For 155034/155034 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4144 event pairs, 156 based on Foata normal form. 1/927 useless extension candidates. Maximal degree in co-relation 8077. Up to 812 conditions per place. [2024-06-27 23:39:35,741 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 209 selfloop transitions, 36 changer transitions 0/247 dead transitions. [2024-06-27 23:39:35,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 247 transitions, 3147 flow [2024-06-27 23:39:35,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:35,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:39:35,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-27 23:39:35,742 INFO L175 Difference]: Start difference. First operand has 254 places, 231 transitions, 2278 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:39:35,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 247 transitions, 3147 flow [2024-06-27 23:39:36,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 247 transitions, 3059 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:36,079 INFO L231 Difference]: Finished difference. Result has 255 places, 236 transitions, 2300 flow [2024-06-27 23:39:36,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2300, PETRI_PLACES=255, PETRI_TRANSITIONS=236} [2024-06-27 23:39:36,079 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2024-06-27 23:39:36,079 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 236 transitions, 2300 flow [2024-06-27 23:39:36,079 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) [2024-06-27 23:39:36,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:36,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:36,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:39:36,080 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)] === [2024-06-27 23:39:36,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:36,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1634216612, now seen corresponding path program 8 times [2024-06-27 23:39:36,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022925595] [2024-06-27 23:39:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:36,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022925595] [2024-06-27 23:39:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022925595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:37,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:37,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:37,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480485876] [2024-06-27 23:39:37,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:37,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:37,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:37,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 236 transitions, 2300 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) [2024-06-27 23:39:37,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:37,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:37,898 INFO L124 PetriNetUnfolderBase]: 535/931 cut-off events. [2024-06-27 23:39:37,898 INFO L125 PetriNetUnfolderBase]: For 158895/158895 co-relation queries the response was YES. [2024-06-27 23:39:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 931 events. 535/931 cut-off events. For 158895/158895 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4173 event pairs, 156 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 8143. Up to 816 conditions per place. [2024-06-27 23:39:37,909 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 206 selfloop transitions, 41 changer transitions 0/249 dead transitions. [2024-06-27 23:39:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 249 transitions, 3162 flow [2024-06-27 23:39:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:37,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:39:37,911 INFO L175 Difference]: Start difference. First operand has 255 places, 236 transitions, 2300 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:37,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 249 transitions, 3162 flow [2024-06-27 23:39:38,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 249 transitions, 3117 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:39:38,311 INFO L231 Difference]: Finished difference. Result has 260 places, 238 transitions, 2360 flow [2024-06-27 23:39:38,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2360, PETRI_PLACES=260, PETRI_TRANSITIONS=238} [2024-06-27 23:39:38,311 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-27 23:39:38,311 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 238 transitions, 2360 flow [2024-06-27 23:39:38,311 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) [2024-06-27 23:39:38,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:38,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:38,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:39:38,312 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)] === [2024-06-27 23:39:38,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:38,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1830582404, now seen corresponding path program 14 times [2024-06-27 23:39:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683714873] [2024-06-27 23:39:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683714873] [2024-06-27 23:39:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683714873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:39,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:39,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643177506] [2024-06-27 23:39:39,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:39,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:39,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:39,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:39,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 238 transitions, 2360 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) [2024-06-27 23:39:39,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:39,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:39,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:40,093 INFO L124 PetriNetUnfolderBase]: 515/913 cut-off events. [2024-06-27 23:39:40,094 INFO L125 PetriNetUnfolderBase]: For 163521/163521 co-relation queries the response was YES. [2024-06-27 23:39:40,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8240 conditions, 913 events. 515/913 cut-off events. For 163521/163521 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4163 event pairs, 142 based on Foata normal form. 1/914 useless extension candidates. Maximal degree in co-relation 8116. Up to 761 conditions per place. [2024-06-27 23:39:40,102 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 184 selfloop transitions, 34 changer transitions 0/250 dead transitions. [2024-06-27 23:39:40,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 250 transitions, 3004 flow [2024-06-27 23:39:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:39:40,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:39:40,103 INFO L175 Difference]: Start difference. First operand has 260 places, 238 transitions, 2360 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:39:40,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 250 transitions, 3004 flow [2024-06-27 23:39:40,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 250 transitions, 2927 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:40,452 INFO L231 Difference]: Finished difference. Result has 263 places, 240 transitions, 2376 flow [2024-06-27 23:39:40,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2376, PETRI_PLACES=263, PETRI_TRANSITIONS=240} [2024-06-27 23:39:40,453 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-27 23:39:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 240 transitions, 2376 flow [2024-06-27 23:39:40,453 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) [2024-06-27 23:39:40,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:40,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:40,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:39:40,454 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)] === [2024-06-27 23:39:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1830582590, now seen corresponding path program 14 times [2024-06-27 23:39:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:40,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384370105] [2024-06-27 23:39:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:41,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384370105] [2024-06-27 23:39:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384370105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:41,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152029764] [2024-06-27 23:39:41,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:41,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:41,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:41,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 240 transitions, 2376 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) [2024-06-27 23:39:41,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:41,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:41,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:42,220 INFO L124 PetriNetUnfolderBase]: 546/949 cut-off events. [2024-06-27 23:39:42,220 INFO L125 PetriNetUnfolderBase]: For 170301/170301 co-relation queries the response was YES. [2024-06-27 23:39:42,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 949 events. 546/949 cut-off events. For 170301/170301 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4295 event pairs, 155 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 8397. Up to 831 conditions per place. [2024-06-27 23:39:42,228 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 210 selfloop transitions, 43 changer transitions 0/255 dead transitions. [2024-06-27 23:39:42,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 255 transitions, 3268 flow [2024-06-27 23:39:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:42,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:39:42,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-27 23:39:42,230 INFO L175 Difference]: Start difference. First operand has 263 places, 240 transitions, 2376 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:39:42,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 255 transitions, 3268 flow [2024-06-27 23:39:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 255 transitions, 3205 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:42,655 INFO L231 Difference]: Finished difference. Result has 266 places, 244 transitions, 2432 flow [2024-06-27 23:39:42,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2432, PETRI_PLACES=266, PETRI_TRANSITIONS=244} [2024-06-27 23:39:42,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 234 predicate places. [2024-06-27 23:39:42,656 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 244 transitions, 2432 flow [2024-06-27 23:39:42,656 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) [2024-06-27 23:39:42,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:42,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:42,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:39:42,656 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)] === [2024-06-27 23:39:42,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash -485326182, now seen corresponding path program 9 times [2024-06-27 23:39:42,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696066536] [2024-06-27 23:39:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:44,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:44,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696066536] [2024-06-27 23:39:44,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696066536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:44,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:44,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:44,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011405861] [2024-06-27 23:39:44,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:44,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:44,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:44,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:44,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:44,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:44,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 244 transitions, 2432 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) [2024-06-27 23:39:44,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:44,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:44,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:44,389 INFO L124 PetriNetUnfolderBase]: 544/946 cut-off events. [2024-06-27 23:39:44,389 INFO L125 PetriNetUnfolderBase]: For 170972/170972 co-relation queries the response was YES. [2024-06-27 23:39:44,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8499 conditions, 946 events. 544/946 cut-off events. For 170972/170972 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4280 event pairs, 156 based on Foata normal form. 1/947 useless extension candidates. Maximal degree in co-relation 8373. Up to 832 conditions per place. [2024-06-27 23:39:44,397 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 213 selfloop transitions, 39 changer transitions 0/254 dead transitions. [2024-06-27 23:39:44,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 254 transitions, 3128 flow [2024-06-27 23:39:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:44,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:39:44,398 INFO L175 Difference]: Start difference. First operand has 266 places, 244 transitions, 2432 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:44,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 254 transitions, 3128 flow [2024-06-27 23:39:44,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 254 transitions, 3061 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:44,844 INFO L231 Difference]: Finished difference. Result has 270 places, 244 transitions, 2448 flow [2024-06-27 23:39:44,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2448, PETRI_PLACES=270, PETRI_TRANSITIONS=244} [2024-06-27 23:39:44,845 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2024-06-27 23:39:44,845 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 244 transitions, 2448 flow [2024-06-27 23:39:44,845 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) [2024-06-27 23:39:44,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:44,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:44,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:39:44,846 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)] === [2024-06-27 23:39:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1830819740, now seen corresponding path program 15 times [2024-06-27 23:39:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637142484] [2024-06-27 23:39:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:46,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:46,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637142484] [2024-06-27 23:39:46,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637142484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:46,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:46,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:46,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085704180] [2024-06-27 23:39:46,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:46,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:46,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:46,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:46,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:46,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 244 transitions, 2448 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) [2024-06-27 23:39:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:46,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:46,631 INFO L124 PetriNetUnfolderBase]: 547/951 cut-off events. [2024-06-27 23:39:46,631 INFO L125 PetriNetUnfolderBase]: For 175102/175102 co-relation queries the response was YES. [2024-06-27 23:39:46,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8572 conditions, 951 events. 547/951 cut-off events. For 175102/175102 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4306 event pairs, 155 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 8445. Up to 832 conditions per place. [2024-06-27 23:39:46,641 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 47 changer transitions 0/257 dead transitions. [2024-06-27 23:39:46,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 3340 flow [2024-06-27 23:39:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:39:46,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771043771043771 [2024-06-27 23:39:46,642 INFO L175 Difference]: Start difference. First operand has 270 places, 244 transitions, 2448 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:39:46,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 3340 flow [2024-06-27 23:39:47,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 257 transitions, 3267 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:47,051 INFO L231 Difference]: Finished difference. Result has 272 places, 246 transitions, 2490 flow [2024-06-27 23:39:47,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2490, PETRI_PLACES=272, PETRI_TRANSITIONS=246} [2024-06-27 23:39:47,051 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 240 predicate places. [2024-06-27 23:39:47,051 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 246 transitions, 2490 flow [2024-06-27 23:39:47,051 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) [2024-06-27 23:39:47,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:47,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:39:47,052 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)] === [2024-06-27 23:39:47,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1830589100, now seen corresponding path program 16 times [2024-06-27 23:39:47,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:47,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121090630] [2024-06-27 23:39:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:48,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121090630] [2024-06-27 23:39:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121090630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:48,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:48,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:48,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535588728] [2024-06-27 23:39:48,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:48,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:48,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:48,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 246 transitions, 2490 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) [2024-06-27 23:39:48,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:48,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:48,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:48,810 INFO L124 PetriNetUnfolderBase]: 545/948 cut-off events. [2024-06-27 23:39:48,810 INFO L125 PetriNetUnfolderBase]: For 175570/175570 co-relation queries the response was YES. [2024-06-27 23:39:48,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8542 conditions, 948 events. 545/948 cut-off events. For 175570/175570 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4284 event pairs, 155 based on Foata normal form. 1/949 useless extension candidates. Maximal degree in co-relation 8414. Up to 830 conditions per place. [2024-06-27 23:39:48,820 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 210 selfloop transitions, 44 changer transitions 0/256 dead transitions. [2024-06-27 23:39:48,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 256 transitions, 3194 flow [2024-06-27 23:39:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:39:48,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-27 23:39:48,821 INFO L175 Difference]: Start difference. First operand has 272 places, 246 transitions, 2490 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:39:48,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 256 transitions, 3194 flow [2024-06-27 23:39:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 256 transitions, 3115 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:49,234 INFO L231 Difference]: Finished difference. Result has 275 places, 246 transitions, 2504 flow [2024-06-27 23:39:49,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2504, PETRI_PLACES=275, PETRI_TRANSITIONS=246} [2024-06-27 23:39:49,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-27 23:39:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 246 transitions, 2504 flow [2024-06-27 23:39:49,235 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) [2024-06-27 23:39:49,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:49,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:49,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:39:49,235 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)] === [2024-06-27 23:39:49,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 612631890, now seen corresponding path program 2 times [2024-06-27 23:39:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607620221] [2024-06-27 23:39:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:49,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607620221] [2024-06-27 23:39:50,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607620221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:50,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:50,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:50,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32332378] [2024-06-27 23:39:50,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:50,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:50,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:50,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:50,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:50,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 246 transitions, 2504 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) [2024-06-27 23:39:50,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:50,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:50,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:51,294 INFO L124 PetriNetUnfolderBase]: 510/906 cut-off events. [2024-06-27 23:39:51,294 INFO L125 PetriNetUnfolderBase]: For 178539/178541 co-relation queries the response was YES. [2024-06-27 23:39:51,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8076 conditions, 906 events. 510/906 cut-off events. For 178539/178541 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4233 event pairs, 141 based on Foata normal form. 5/905 useless extension candidates. Maximal degree in co-relation 7947. Up to 803 conditions per place. [2024-06-27 23:39:51,303 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 205 selfloop transitions, 19 changer transitions 0/257 dead transitions. [2024-06-27 23:39:51,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 257 transitions, 2992 flow [2024-06-27 23:39:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:39:51,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367003367003367 [2024-06-27 23:39:51,304 INFO L175 Difference]: Start difference. First operand has 275 places, 246 transitions, 2504 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:39:51,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 257 transitions, 2992 flow [2024-06-27 23:39:51,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 257 transitions, 2876 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:51,703 INFO L231 Difference]: Finished difference. Result has 275 places, 248 transitions, 2456 flow [2024-06-27 23:39:51,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2456, PETRI_PLACES=275, PETRI_TRANSITIONS=248} [2024-06-27 23:39:51,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-27 23:39:51,703 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 248 transitions, 2456 flow [2024-06-27 23:39:51,703 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) [2024-06-27 23:39:51,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:51,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:51,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:39:51,704 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)] === [2024-06-27 23:39:51,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash -828517394, now seen corresponding path program 10 times [2024-06-27 23:39:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172493259] [2024-06-27 23:39:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:51,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:52,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:52,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172493259] [2024-06-27 23:39:52,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172493259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:52,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:52,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372097882] [2024-06-27 23:39:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:53,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:53,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 248 transitions, 2456 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) [2024-06-27 23:39:53,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:53,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:53,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:53,370 INFO L124 PetriNetUnfolderBase]: 542/944 cut-off events. [2024-06-27 23:39:53,370 INFO L125 PetriNetUnfolderBase]: For 172052/172052 co-relation queries the response was YES. [2024-06-27 23:39:53,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 944 events. 542/944 cut-off events. For 172052/172052 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4279 event pairs, 152 based on Foata normal form. 1/945 useless extension candidates. Maximal degree in co-relation 8190. Up to 914 conditions per place. [2024-06-27 23:39:53,379 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 241 selfloop transitions, 16 changer transitions 0/259 dead transitions. [2024-06-27 23:39:53,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 259 transitions, 3010 flow [2024-06-27 23:39:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:39:53,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:39:53,380 INFO L175 Difference]: Start difference. First operand has 275 places, 248 transitions, 2456 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:39:53,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 259 transitions, 3010 flow [2024-06-27 23:39:53,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 259 transitions, 2925 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:53,769 INFO L231 Difference]: Finished difference. Result has 276 places, 251 transitions, 2439 flow [2024-06-27 23:39:53,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2439, PETRI_PLACES=276, PETRI_TRANSITIONS=251} [2024-06-27 23:39:53,769 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 244 predicate places. [2024-06-27 23:39:53,770 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 251 transitions, 2439 flow [2024-06-27 23:39:53,770 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) [2024-06-27 23:39:53,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:53,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:53,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:39:53,770 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)] === [2024-06-27 23:39:53,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1123744964, now seen corresponding path program 11 times [2024-06-27 23:39:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:53,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138115809] [2024-06-27 23:39:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138115809] [2024-06-27 23:39:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138115809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:55,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:55,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:55,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449073321] [2024-06-27 23:39:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:55,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:55,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:55,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 251 transitions, 2439 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) [2024-06-27 23:39:55,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:55,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:55,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:55,529 INFO L124 PetriNetUnfolderBase]: 555/965 cut-off events. [2024-06-27 23:39:55,529 INFO L125 PetriNetUnfolderBase]: For 183791/183791 co-relation queries the response was YES. [2024-06-27 23:39:55,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8557 conditions, 965 events. 555/965 cut-off events. For 183791/183791 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4373 event pairs, 152 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 8427. Up to 891 conditions per place. [2024-06-27 23:39:55,538 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 235 selfloop transitions, 32 changer transitions 0/269 dead transitions. [2024-06-27 23:39:55,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 269 transitions, 3599 flow [2024-06-27 23:39:55,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-27 23:39:55,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 23:39:55,540 INFO L175 Difference]: Start difference. First operand has 276 places, 251 transitions, 2439 flow. Second operand 9 states and 110 transitions. [2024-06-27 23:39:55,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 269 transitions, 3599 flow [2024-06-27 23:39:56,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 269 transitions, 3567 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:56,012 INFO L231 Difference]: Finished difference. Result has 279 places, 258 transitions, 2544 flow [2024-06-27 23:39:56,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2544, PETRI_PLACES=279, PETRI_TRANSITIONS=258} [2024-06-27 23:39:56,012 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-27 23:39:56,012 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 258 transitions, 2544 flow [2024-06-27 23:39:56,013 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) [2024-06-27 23:39:56,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:56,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:56,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:39:56,013 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)] === [2024-06-27 23:39:56,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -244162896, now seen corresponding path program 12 times [2024-06-27 23:39:56,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:56,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878169057] [2024-06-27 23:39:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:56,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:57,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:57,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878169057] [2024-06-27 23:39:57,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878169057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:57,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766901947] [2024-06-27 23:39:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:57,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:57,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:57,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 258 transitions, 2544 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) [2024-06-27 23:39:57,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:57,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:57,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:57,762 INFO L124 PetriNetUnfolderBase]: 558/970 cut-off events. [2024-06-27 23:39:57,762 INFO L125 PetriNetUnfolderBase]: For 188063/188063 co-relation queries the response was YES. [2024-06-27 23:39:57,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8671 conditions, 970 events. 558/970 cut-off events. For 188063/188063 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4409 event pairs, 152 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 8540. Up to 924 conditions per place. [2024-06-27 23:39:57,772 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 244 selfloop transitions, 23 changer transitions 0/269 dead transitions. [2024-06-27 23:39:57,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 269 transitions, 3302 flow [2024-06-27 23:39:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:39:57,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3501683501683502 [2024-06-27 23:39:57,773 INFO L175 Difference]: Start difference. First operand has 279 places, 258 transitions, 2544 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:39:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 269 transitions, 3302 flow [2024-06-27 23:39:58,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 269 transitions, 3224 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:58,230 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2541 flow [2024-06-27 23:39:58,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2541, PETRI_PLACES=283, PETRI_TRANSITIONS=260} [2024-06-27 23:39:58,230 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-27 23:39:58,230 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2541 flow [2024-06-27 23:39:58,230 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) [2024-06-27 23:39:58,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:58,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:39:58,231 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)] === [2024-06-27 23:39:58,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:58,231 INFO L85 PathProgramCache]: Analyzing trace with hash -252215084, now seen corresponding path program 17 times [2024-06-27 23:39:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408363025] [2024-06-27 23:39:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408363025] [2024-06-27 23:39:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408363025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668689271] [2024-06-27 23:39:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:59,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:59,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:59,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:39:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 260 transitions, 2541 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) [2024-06-27 23:39:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:39:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:59,978 INFO L124 PetriNetUnfolderBase]: 566/983 cut-off events. [2024-06-27 23:39:59,978 INFO L125 PetriNetUnfolderBase]: For 196184/196184 co-relation queries the response was YES. [2024-06-27 23:39:59,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8821 conditions, 983 events. 566/983 cut-off events. For 196184/196184 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4488 event pairs, 152 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 8689. Up to 925 conditions per place. [2024-06-27 23:39:59,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 246 selfloop transitions, 26 changer transitions 0/274 dead transitions. [2024-06-27 23:39:59,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 274 transitions, 3503 flow [2024-06-27 23:39:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:39:59,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-27 23:39:59,989 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2541 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:39:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 274 transitions, 3503 flow [2024-06-27 23:40:00,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 274 transitions, 3432 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:00,454 INFO L231 Difference]: Finished difference. Result has 284 places, 264 transitions, 2559 flow [2024-06-27 23:40:00,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2559, PETRI_PLACES=284, PETRI_TRANSITIONS=264} [2024-06-27 23:40:00,454 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-27 23:40:00,454 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 264 transitions, 2559 flow [2024-06-27 23:40:00,454 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) [2024-06-27 23:40:00,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:00,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:00,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:40:00,455 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)] === [2024-06-27 23:40:00,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash -252206466, now seen corresponding path program 13 times [2024-06-27 23:40:00,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438349066] [2024-06-27 23:40:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438349066] [2024-06-27 23:40:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438349066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:01,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:01,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150996351] [2024-06-27 23:40:01,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:01,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:01,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:01,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:01,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 264 transitions, 2559 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) [2024-06-27 23:40:01,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:01,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:01,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:02,171 INFO L124 PetriNetUnfolderBase]: 564/980 cut-off events. [2024-06-27 23:40:02,171 INFO L125 PetriNetUnfolderBase]: For 196237/196237 co-relation queries the response was YES. [2024-06-27 23:40:02,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8753 conditions, 980 events. 564/980 cut-off events. For 196237/196237 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4475 event pairs, 152 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 8621. Up to 906 conditions per place. [2024-06-27 23:40:02,179 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 237 selfloop transitions, 35 changer transitions 0/274 dead transitions. [2024-06-27 23:40:02,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 274 transitions, 3493 flow [2024-06-27 23:40:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:40:02,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:40:02,180 INFO L175 Difference]: Start difference. First operand has 284 places, 264 transitions, 2559 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:40:02,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 274 transitions, 3493 flow [2024-06-27 23:40:02,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 274 transitions, 3431 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:02,857 INFO L231 Difference]: Finished difference. Result has 287 places, 264 transitions, 2572 flow [2024-06-27 23:40:02,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2572, PETRI_PLACES=287, PETRI_TRANSITIONS=264} [2024-06-27 23:40:02,858 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-27 23:40:02,858 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 264 transitions, 2572 flow [2024-06-27 23:40:02,858 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) [2024-06-27 23:40:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:02,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:40:02,858 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)] === [2024-06-27 23:40:02,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -838645342, now seen corresponding path program 18 times [2024-06-27 23:40:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442979486] [2024-06-27 23:40:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442979486] [2024-06-27 23:40:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442979486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:04,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:04,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:04,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495113914] [2024-06-27 23:40:04,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:04,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:04,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 264 transitions, 2572 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) [2024-06-27 23:40:04,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:04,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:04,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:04,497 INFO L124 PetriNetUnfolderBase]: 562/977 cut-off events. [2024-06-27 23:40:04,497 INFO L125 PetriNetUnfolderBase]: For 196129/196129 co-relation queries the response was YES. [2024-06-27 23:40:04,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8710 conditions, 977 events. 562/977 cut-off events. For 196129/196129 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4468 event pairs, 152 based on Foata normal form. 1/978 useless extension candidates. Maximal degree in co-relation 8577. Up to 947 conditions per place. [2024-06-27 23:40:04,508 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 254 selfloop transitions, 16 changer transitions 0/272 dead transitions. [2024-06-27 23:40:04,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 272 transitions, 3130 flow [2024-06-27 23:40:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:40:04,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 23:40:04,509 INFO L175 Difference]: Start difference. First operand has 287 places, 264 transitions, 2572 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:40:04,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 272 transitions, 3130 flow [2024-06-27 23:40:05,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 272 transitions, 3060 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:05,081 INFO L231 Difference]: Finished difference. Result has 289 places, 264 transitions, 2539 flow [2024-06-27 23:40:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2539, PETRI_PLACES=289, PETRI_TRANSITIONS=264} [2024-06-27 23:40:05,082 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-27 23:40:05,082 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 264 transitions, 2539 flow [2024-06-27 23:40:05,082 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) [2024-06-27 23:40:05,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:05,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:40:05,083 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)] === [2024-06-27 23:40:05,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -838645094, now seen corresponding path program 14 times [2024-06-27 23:40:05,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:05,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624422726] [2024-06-27 23:40:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624422726] [2024-06-27 23:40:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624422726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:06,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696260492] [2024-06-27 23:40:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:06,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:06,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:06,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:06,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 264 transitions, 2539 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) [2024-06-27 23:40:06,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:06,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:06,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:06,769 INFO L124 PetriNetUnfolderBase]: 560/974 cut-off events. [2024-06-27 23:40:06,769 INFO L125 PetriNetUnfolderBase]: For 195879/195879 co-relation queries the response was YES. [2024-06-27 23:40:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 974 events. 560/974 cut-off events. For 195879/195879 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4448 event pairs, 152 based on Foata normal form. 1/975 useless extension candidates. Maximal degree in co-relation 8475. Up to 929 conditions per place. [2024-06-27 23:40:06,780 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 246 selfloop transitions, 24 changer transitions 0/272 dead transitions. [2024-06-27 23:40:06,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 272 transitions, 3097 flow [2024-06-27 23:40:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:40:06,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-27 23:40:06,781 INFO L175 Difference]: Start difference. First operand has 289 places, 264 transitions, 2539 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:40:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 272 transitions, 3097 flow [2024-06-27 23:40:07,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 272 transitions, 3050 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:07,463 INFO L231 Difference]: Finished difference. Result has 290 places, 264 transitions, 2545 flow [2024-06-27 23:40:07,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2545, PETRI_PLACES=290, PETRI_TRANSITIONS=264} [2024-06-27 23:40:07,464 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-27 23:40:07,464 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 264 transitions, 2545 flow [2024-06-27 23:40:07,464 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) [2024-06-27 23:40:07,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:07,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:40:07,465 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)] === [2024-06-27 23:40:07,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:07,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1161836676, now seen corresponding path program 15 times [2024-06-27 23:40:07,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:07,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958442645] [2024-06-27 23:40:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:08,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958442645] [2024-06-27 23:40:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958442645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902755728] [2024-06-27 23:40:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:08,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:08,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 264 transitions, 2545 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) [2024-06-27 23:40:08,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:08,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:08,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:09,190 INFO L124 PetriNetUnfolderBase]: 532/945 cut-off events. [2024-06-27 23:40:09,190 INFO L125 PetriNetUnfolderBase]: For 196219/196219 co-relation queries the response was YES. [2024-06-27 23:40:09,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 945 events. 532/945 cut-off events. For 196219/196219 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4408 event pairs, 140 based on Foata normal form. 1/946 useless extension candidates. Maximal degree in co-relation 8281. Up to 834 conditions per place. [2024-06-27 23:40:09,200 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 219 selfloop transitions, 16 changer transitions 0/272 dead transitions. [2024-06-27 23:40:09,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 3033 flow [2024-06-27 23:40:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 23:40:09,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602693602693603 [2024-06-27 23:40:09,201 INFO L175 Difference]: Start difference. First operand has 290 places, 264 transitions, 2545 flow. Second operand 9 states and 107 transitions. [2024-06-27 23:40:09,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 3033 flow [2024-06-27 23:40:09,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 272 transitions, 2993 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:09,694 INFO L231 Difference]: Finished difference. Result has 293 places, 264 transitions, 2542 flow [2024-06-27 23:40:09,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2542, PETRI_PLACES=293, PETRI_TRANSITIONS=264} [2024-06-27 23:40:09,695 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-27 23:40:09,695 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 264 transitions, 2542 flow [2024-06-27 23:40:09,695 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) [2024-06-27 23:40:09,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:09,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:09,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:40:09,696 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)] === [2024-06-27 23:40:09,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash -252445476, now seen corresponding path program 15 times [2024-06-27 23:40:09,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:09,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569550817] [2024-06-27 23:40:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:11,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569550817] [2024-06-27 23:40:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569550817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:11,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:11,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255864351] [2024-06-27 23:40:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:11,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:11,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:11,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:11,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:11,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 264 transitions, 2542 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) [2024-06-27 23:40:11,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:11,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:11,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:11,397 INFO L124 PetriNetUnfolderBase]: 556/968 cut-off events. [2024-06-27 23:40:11,397 INFO L125 PetriNetUnfolderBase]: For 195026/195026 co-relation queries the response was YES. [2024-06-27 23:40:11,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8483 conditions, 968 events. 556/968 cut-off events. For 195026/195026 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4424 event pairs, 152 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 8347. Up to 896 conditions per place. [2024-06-27 23:40:11,407 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 233 selfloop transitions, 37 changer transitions 0/272 dead transitions. [2024-06-27 23:40:11,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 272 transitions, 3100 flow [2024-06-27 23:40:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:40:11,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-27 23:40:11,408 INFO L175 Difference]: Start difference. First operand has 293 places, 264 transitions, 2542 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:40:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 272 transitions, 3100 flow [2024-06-27 23:40:12,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 272 transitions, 2987 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 23:40:12,005 INFO L231 Difference]: Finished difference. Result has 291 places, 264 transitions, 2508 flow [2024-06-27 23:40:12,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2508, PETRI_PLACES=291, PETRI_TRANSITIONS=264} [2024-06-27 23:40:12,006 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-27 23:40:12,006 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 264 transitions, 2508 flow [2024-06-27 23:40:12,006 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) [2024-06-27 23:40:12,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:12,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:12,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:40:12,006 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)] === [2024-06-27 23:40:12,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1123975852, now seen corresponding path program 19 times [2024-06-27 23:40:12,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:12,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122565917] [2024-06-27 23:40:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:12,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:13,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122565917] [2024-06-27 23:40:13,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122565917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:13,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:13,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244297327] [2024-06-27 23:40:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:13,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:13,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:13,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 264 transitions, 2508 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) [2024-06-27 23:40:13,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:13,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:13,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:13,691 INFO L124 PetriNetUnfolderBase]: 559/973 cut-off events. [2024-06-27 23:40:13,691 INFO L125 PetriNetUnfolderBase]: For 198939/198939 co-relation queries the response was YES. [2024-06-27 23:40:13,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8496 conditions, 973 events. 559/973 cut-off events. For 198939/198939 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4461 event pairs, 152 based on Foata normal form. 1/974 useless extension candidates. Maximal degree in co-relation 8360. Up to 915 conditions per place. [2024-06-27 23:40:13,699 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 244 selfloop transitions, 29 changer transitions 0/275 dead transitions. [2024-06-27 23:40:13,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 275 transitions, 3282 flow [2024-06-27 23:40:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:40:13,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35353535353535354 [2024-06-27 23:40:13,700 INFO L175 Difference]: Start difference. First operand has 291 places, 264 transitions, 2508 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:40:13,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 275 transitions, 3282 flow [2024-06-27 23:40:14,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 275 transitions, 3186 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:14,372 INFO L231 Difference]: Finished difference. Result has 293 places, 266 transitions, 2489 flow [2024-06-27 23:40:14,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2489, PETRI_PLACES=293, PETRI_TRANSITIONS=266} [2024-06-27 23:40:14,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-27 23:40:14,372 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 266 transitions, 2489 flow [2024-06-27 23:40:14,372 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) [2024-06-27 23:40:14,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:14,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:40:14,372 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)] === [2024-06-27 23:40:14,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1123982362, now seen corresponding path program 20 times [2024-06-27 23:40:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414962621] [2024-06-27 23:40:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:15,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:15,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:15,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414962621] [2024-06-27 23:40:15,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414962621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:15,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252433102] [2024-06-27 23:40:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:15,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:15,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:15,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:15,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 266 transitions, 2489 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) [2024-06-27 23:40:15,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:15,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:15,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:16,104 INFO L124 PetriNetUnfolderBase]: 557/970 cut-off events. [2024-06-27 23:40:16,104 INFO L125 PetriNetUnfolderBase]: For 198262/198262 co-relation queries the response was YES. [2024-06-27 23:40:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8406 conditions, 970 events. 557/970 cut-off events. For 198262/198262 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4454 event pairs, 152 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 8269. Up to 913 conditions per place. [2024-06-27 23:40:16,114 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 241 selfloop transitions, 31 changer transitions 0/274 dead transitions. [2024-06-27 23:40:16,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 274 transitions, 3051 flow [2024-06-27 23:40:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 23:40:16,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-06-27 23:40:16,115 INFO L175 Difference]: Start difference. First operand has 293 places, 266 transitions, 2489 flow. Second operand 9 states and 103 transitions. [2024-06-27 23:40:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 274 transitions, 3051 flow [2024-06-27 23:40:16,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 274 transitions, 2958 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:16,561 INFO L231 Difference]: Finished difference. Result has 294 places, 266 transitions, 2463 flow [2024-06-27 23:40:16,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2463, PETRI_PLACES=294, PETRI_TRANSITIONS=266} [2024-06-27 23:40:16,561 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-27 23:40:16,561 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 266 transitions, 2463 flow [2024-06-27 23:40:16,561 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) [2024-06-27 23:40:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:16,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:40:16,562 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)] === [2024-06-27 23:40:16,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash -828147998, now seen corresponding path program 1 times [2024-06-27 23:40:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992723316] [2024-06-27 23:40:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992723316] [2024-06-27 23:40:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992723316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:18,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:18,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419618410] [2024-06-27 23:40:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:18,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:18,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:18,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:18,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:18,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 266 transitions, 2463 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) [2024-06-27 23:40:18,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:18,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:18,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:19,524 INFO L124 PetriNetUnfolderBase]: 523/930 cut-off events. [2024-06-27 23:40:19,524 INFO L125 PetriNetUnfolderBase]: For 203317/203319 co-relation queries the response was YES. [2024-06-27 23:40:19,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 930 events. 523/930 cut-off events. For 203317/203319 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4395 event pairs, 140 based on Foata normal form. 4/928 useless extension candidates. Maximal degree in co-relation 7856. Up to 821 conditions per place. [2024-06-27 23:40:19,535 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 221 selfloop transitions, 16 changer transitions 0/275 dead transitions. [2024-06-27 23:40:19,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 275 transitions, 2957 flow [2024-06-27 23:40:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:19,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:40:19,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:40:19,536 INFO L175 Difference]: Start difference. First operand has 294 places, 266 transitions, 2463 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:40:19,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 275 transitions, 2957 flow [2024-06-27 23:40:19,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 275 transitions, 2859 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:19,924 INFO L231 Difference]: Finished difference. Result has 295 places, 266 transitions, 2401 flow [2024-06-27 23:40:19,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2401, PETRI_PLACES=295, PETRI_TRANSITIONS=266} [2024-06-27 23:40:19,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 263 predicate places. [2024-06-27 23:40:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 266 transitions, 2401 flow [2024-06-27 23:40:19,926 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) [2024-06-27 23:40:19,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:19,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:19,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:40:19,926 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)] === [2024-06-27 23:40:19,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:19,927 INFO L85 PathProgramCache]: Analyzing trace with hash -94830253, now seen corresponding path program 1 times [2024-06-27 23:40:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:19,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923546798] [2024-06-27 23:40:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923546798] [2024-06-27 23:40:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923546798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:21,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:21,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:21,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633864250] [2024-06-27 23:40:21,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:21,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:21,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 266 transitions, 2401 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) [2024-06-27 23:40:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:21,880 INFO L124 PetriNetUnfolderBase]: 542/961 cut-off events. [2024-06-27 23:40:21,880 INFO L125 PetriNetUnfolderBase]: For 211642/211644 co-relation queries the response was YES. [2024-06-27 23:40:21,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8456 conditions, 961 events. 542/961 cut-off events. For 211642/211644 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4540 event pairs, 90 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 8317. Up to 737 conditions per place. [2024-06-27 23:40:21,890 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 207 selfloop transitions, 48 changer transitions 0/293 dead transitions. [2024-06-27 23:40:21,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 293 transitions, 3217 flow [2024-06-27 23:40:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:40:21,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:40:21,893 INFO L175 Difference]: Start difference. First operand has 295 places, 266 transitions, 2401 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:40:21,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 293 transitions, 3217 flow [2024-06-27 23:40:22,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 293 transitions, 3165 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:22,306 INFO L231 Difference]: Finished difference. Result has 299 places, 273 transitions, 2527 flow [2024-06-27 23:40:22,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2527, PETRI_PLACES=299, PETRI_TRANSITIONS=273} [2024-06-27 23:40:22,307 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-27 23:40:22,307 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 273 transitions, 2527 flow [2024-06-27 23:40:22,307 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) [2024-06-27 23:40:22,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:22,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:22,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:40:22,307 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)] === [2024-06-27 23:40:22,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:22,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1158886934, now seen corresponding path program 1 times [2024-06-27 23:40:22,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:22,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066383799] [2024-06-27 23:40:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:22,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:23,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066383799] [2024-06-27 23:40:23,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066383799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:23,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487258100] [2024-06-27 23:40:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:23,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:23,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:23,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 273 transitions, 2527 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) [2024-06-27 23:40:23,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:23,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:24,482 INFO L124 PetriNetUnfolderBase]: 574/998 cut-off events. [2024-06-27 23:40:24,482 INFO L125 PetriNetUnfolderBase]: For 210131/210131 co-relation queries the response was YES. [2024-06-27 23:40:24,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 998 events. 574/998 cut-off events. For 210131/210131 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4615 event pairs, 100 based on Foata normal form. 1/999 useless extension candidates. Maximal degree in co-relation 8559. Up to 881 conditions per place. [2024-06-27 23:40:24,492 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-27 23:40:24,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 298 transitions, 3407 flow [2024-06-27 23:40:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 23:40:24,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-06-27 23:40:24,494 INFO L175 Difference]: Start difference. First operand has 299 places, 273 transitions, 2527 flow. Second operand 11 states and 134 transitions. [2024-06-27 23:40:24,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 298 transitions, 3407 flow [2024-06-27 23:40:24,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 298 transitions, 3338 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:24,934 INFO L231 Difference]: Finished difference. Result has 304 places, 277 transitions, 2595 flow [2024-06-27 23:40:24,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2595, PETRI_PLACES=304, PETRI_TRANSITIONS=277} [2024-06-27 23:40:24,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-27 23:40:24,934 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 277 transitions, 2595 flow [2024-06-27 23:40:24,934 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) [2024-06-27 23:40:24,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:24,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:40:24,935 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)] === [2024-06-27 23:40:24,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1155489489, now seen corresponding path program 2 times [2024-06-27 23:40:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:24,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123286932] [2024-06-27 23:40:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123286932] [2024-06-27 23:40:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123286932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:26,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387986574] [2024-06-27 23:40:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:26,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:26,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 277 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:26,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:26,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:26,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:27,284 INFO L124 PetriNetUnfolderBase]: 555/981 cut-off events. [2024-06-27 23:40:27,284 INFO L125 PetriNetUnfolderBase]: For 221039/221041 co-relation queries the response was YES. [2024-06-27 23:40:27,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 981 events. 555/981 cut-off events. For 221039/221041 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4640 event pairs, 90 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 8729. Up to 752 conditions per place. [2024-06-27 23:40:27,294 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 203 selfloop transitions, 57 changer transitions 0/300 dead transitions. [2024-06-27 23:40:27,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 300 transitions, 3385 flow [2024-06-27 23:40:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-27 23:40:27,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:40:27,296 INFO L175 Difference]: Start difference. First operand has 304 places, 277 transitions, 2595 flow. Second operand 11 states and 154 transitions. [2024-06-27 23:40:27,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 300 transitions, 3385 flow [2024-06-27 23:40:27,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 300 transitions, 3312 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:27,747 INFO L231 Difference]: Finished difference. Result has 308 places, 279 transitions, 2658 flow [2024-06-27 23:40:27,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2658, PETRI_PLACES=308, PETRI_TRANSITIONS=279} [2024-06-27 23:40:27,748 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-27 23:40:27,748 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 279 transitions, 2658 flow [2024-06-27 23:40:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:27,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:27,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:27,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:40:27,749 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)] === [2024-06-27 23:40:27,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1140386289, now seen corresponding path program 3 times [2024-06-27 23:40:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756467211] [2024-06-27 23:40:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756467211] [2024-06-27 23:40:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756467211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066029891] [2024-06-27 23:40:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:29,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:29,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:29,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 279 transitions, 2658 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:29,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:29,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:29,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:30,186 INFO L124 PetriNetUnfolderBase]: 552/977 cut-off events. [2024-06-27 23:40:30,186 INFO L125 PetriNetUnfolderBase]: For 215146/215147 co-relation queries the response was YES. [2024-06-27 23:40:30,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 977 events. 552/977 cut-off events. For 215146/215147 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4627 event pairs, 93 based on Foata normal form. 1/976 useless extension candidates. Maximal degree in co-relation 8638. Up to 777 conditions per place. [2024-06-27 23:40:30,196 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 208 selfloop transitions, 48 changer transitions 0/296 dead transitions. [2024-06-27 23:40:30,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 296 transitions, 3214 flow [2024-06-27 23:40:30,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:40:30,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-27 23:40:30,198 INFO L175 Difference]: Start difference. First operand has 308 places, 279 transitions, 2658 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:40:30,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 296 transitions, 3214 flow [2024-06-27 23:40:30,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 296 transitions, 3109 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:30,759 INFO L231 Difference]: Finished difference. Result has 309 places, 279 transitions, 2658 flow [2024-06-27 23:40:30,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2658, PETRI_PLACES=309, PETRI_TRANSITIONS=279} [2024-06-27 23:40:30,759 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-27 23:40:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 279 transitions, 2658 flow [2024-06-27 23:40:30,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:30,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:30,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:40:30,760 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)] === [2024-06-27 23:40:30,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash -945837120, now seen corresponding path program 2 times [2024-06-27 23:40:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633822569] [2024-06-27 23:40:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633822569] [2024-06-27 23:40:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633822569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442234204] [2024-06-27 23:40:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:32,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:32,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 279 transitions, 2658 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) [2024-06-27 23:40:32,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:32,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:32,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:33,161 INFO L124 PetriNetUnfolderBase]: 578/1005 cut-off events. [2024-06-27 23:40:33,161 INFO L125 PetriNetUnfolderBase]: For 213404/213404 co-relation queries the response was YES. [2024-06-27 23:40:33,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8873 conditions, 1005 events. 578/1005 cut-off events. For 213404/213404 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4654 event pairs, 104 based on Foata normal form. 1/1006 useless extension candidates. Maximal degree in co-relation 8730. Up to 910 conditions per place. [2024-06-27 23:40:33,172 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 259 selfloop transitions, 38 changer transitions 0/299 dead transitions. [2024-06-27 23:40:33,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 299 transitions, 3314 flow [2024-06-27 23:40:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:40:33,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:40:33,173 INFO L175 Difference]: Start difference. First operand has 309 places, 279 transitions, 2658 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:40:33,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 299 transitions, 3314 flow [2024-06-27 23:40:33,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 299 transitions, 3208 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:33,738 INFO L231 Difference]: Finished difference. Result has 311 places, 281 transitions, 2651 flow [2024-06-27 23:40:33,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2651, PETRI_PLACES=311, PETRI_TRANSITIONS=281} [2024-06-27 23:40:33,739 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-27 23:40:33,739 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 281 transitions, 2651 flow [2024-06-27 23:40:33,739 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) [2024-06-27 23:40:33,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:33,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:33,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:40:33,740 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)] === [2024-06-27 23:40:33,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -831022110, now seen corresponding path program 3 times [2024-06-27 23:40:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:33,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265450396] [2024-06-27 23:40:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:33,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265450396] [2024-06-27 23:40:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265450396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:35,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:35,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:35,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586632266] [2024-06-27 23:40:35,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:35,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:35,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:35,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:35,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:35,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:35,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 281 transitions, 2651 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) [2024-06-27 23:40:35,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:35,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:35,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:36,306 INFO L124 PetriNetUnfolderBase]: 586/1019 cut-off events. [2024-06-27 23:40:36,306 INFO L125 PetriNetUnfolderBase]: For 223000/223000 co-relation queries the response was YES. [2024-06-27 23:40:36,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9052 conditions, 1019 events. 586/1019 cut-off events. For 223000/223000 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4740 event pairs, 82 based on Foata normal form. 1/1020 useless extension candidates. Maximal degree in co-relation 8908. Up to 640 conditions per place. [2024-06-27 23:40:36,317 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 113 changer transitions 0/306 dead transitions. [2024-06-27 23:40:36,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 306 transitions, 3783 flow [2024-06-27 23:40:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:40:36,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:40:36,318 INFO L175 Difference]: Start difference. First operand has 311 places, 281 transitions, 2651 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:40:36,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 306 transitions, 3783 flow [2024-06-27 23:40:36,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 306 transitions, 3704 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:36,960 INFO L231 Difference]: Finished difference. Result has 313 places, 287 transitions, 2867 flow [2024-06-27 23:40:36,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2867, PETRI_PLACES=313, PETRI_TRANSITIONS=287} [2024-06-27 23:40:36,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-27 23:40:36,960 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 287 transitions, 2867 flow [2024-06-27 23:40:36,960 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) [2024-06-27 23:40:36,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:36,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:36,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:40:36,961 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)] === [2024-06-27 23:40:36,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:36,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1756278513, now seen corresponding path program 1 times [2024-06-27 23:40:36,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:36,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526682219] [2024-06-27 23:40:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:38,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:38,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526682219] [2024-06-27 23:40:38,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526682219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:38,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:38,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:38,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408684480] [2024-06-27 23:40:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:38,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:38,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:38,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 287 transitions, 2867 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) [2024-06-27 23:40:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:38,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:38,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:39,366 INFO L124 PetriNetUnfolderBase]: 589/1024 cut-off events. [2024-06-27 23:40:39,366 INFO L125 PetriNetUnfolderBase]: For 227519/227519 co-relation queries the response was YES. [2024-06-27 23:40:39,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 1024 events. 589/1024 cut-off events. For 227519/227519 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4775 event pairs, 93 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 9145. Up to 659 conditions per place. [2024-06-27 23:40:39,377 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 187 selfloop transitions, 120 changer transitions 0/309 dead transitions. [2024-06-27 23:40:39,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 309 transitions, 3761 flow [2024-06-27 23:40:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:40:39,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:40:39,378 INFO L175 Difference]: Start difference. First operand has 313 places, 287 transitions, 2867 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:40:39,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 309 transitions, 3761 flow [2024-06-27 23:40:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 309 transitions, 3650 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 23:40:39,982 INFO L231 Difference]: Finished difference. Result has 318 places, 291 transitions, 3029 flow [2024-06-27 23:40:39,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3029, PETRI_PLACES=318, PETRI_TRANSITIONS=291} [2024-06-27 23:40:39,983 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 286 predicate places. [2024-06-27 23:40:39,983 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 291 transitions, 3029 flow [2024-06-27 23:40:39,983 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) [2024-06-27 23:40:39,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:39,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:40:39,983 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)] === [2024-06-27 23:40:39,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1202171710, now seen corresponding path program 4 times [2024-06-27 23:40:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924031736] [2024-06-27 23:40:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:41,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:41,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924031736] [2024-06-27 23:40:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924031736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:41,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129881500] [2024-06-27 23:40:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:41,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:41,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:41,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:41,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 291 transitions, 3029 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) [2024-06-27 23:40:41,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:41,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:41,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:42,446 INFO L124 PetriNetUnfolderBase]: 587/1021 cut-off events. [2024-06-27 23:40:42,447 INFO L125 PetriNetUnfolderBase]: For 226144/226144 co-relation queries the response was YES. [2024-06-27 23:40:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9396 conditions, 1021 events. 587/1021 cut-off events. For 226144/226144 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4767 event pairs, 81 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 9249. Up to 643 conditions per place. [2024-06-27 23:40:42,457 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 196 selfloop transitions, 111 changer transitions 0/309 dead transitions. [2024-06-27 23:40:42,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 309 transitions, 3901 flow [2024-06-27 23:40:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:40:42,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:40:42,458 INFO L175 Difference]: Start difference. First operand has 318 places, 291 transitions, 3029 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:40:42,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 309 transitions, 3901 flow [2024-06-27 23:40:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 3779 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:43,161 INFO L231 Difference]: Finished difference. Result has 322 places, 291 transitions, 3134 flow [2024-06-27 23:40:43,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3134, PETRI_PLACES=322, PETRI_TRANSITIONS=291} [2024-06-27 23:40:43,162 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-27 23:40:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 291 transitions, 3134 flow [2024-06-27 23:40:43,162 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) [2024-06-27 23:40:43,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:43,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:43,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:40:43,163 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)] === [2024-06-27 23:40:43,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1202171865, now seen corresponding path program 4 times [2024-06-27 23:40:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:43,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397343340] [2024-06-27 23:40:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:44,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:44,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397343340] [2024-06-27 23:40:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397343340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:44,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:44,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561097956] [2024-06-27 23:40:44,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:44,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:44,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:44,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:44,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:44,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:44,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 291 transitions, 3134 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:44,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:44,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:45,352 INFO L124 PetriNetUnfolderBase]: 565/1000 cut-off events. [2024-06-27 23:40:45,352 INFO L125 PetriNetUnfolderBase]: For 236889/236890 co-relation queries the response was YES. [2024-06-27 23:40:45,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9584 conditions, 1000 events. 565/1000 cut-off events. For 236889/236890 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4792 event pairs, 83 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 9435. Up to 707 conditions per place. [2024-06-27 23:40:45,363 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 173 selfloop transitions, 91 changer transitions 0/308 dead transitions. [2024-06-27 23:40:45,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 308 transitions, 3720 flow [2024-06-27 23:40:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:40:45,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-27 23:40:45,364 INFO L175 Difference]: Start difference. First operand has 322 places, 291 transitions, 3134 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:40:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 308 transitions, 3720 flow [2024-06-27 23:40:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 308 transitions, 3483 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:45,951 INFO L231 Difference]: Finished difference. Result has 322 places, 293 transitions, 3111 flow [2024-06-27 23:40:45,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2897, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3111, PETRI_PLACES=322, PETRI_TRANSITIONS=293} [2024-06-27 23:40:45,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-27 23:40:45,951 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 293 transitions, 3111 flow [2024-06-27 23:40:45,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:45,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:45,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:45,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:40:45,952 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)] === [2024-06-27 23:40:45,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:45,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1989706375, now seen corresponding path program 1 times [2024-06-27 23:40:45,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:45,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209705439] [2024-06-27 23:40:45,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:45,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:47,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:47,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209705439] [2024-06-27 23:40:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209705439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:47,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:47,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:47,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929849574] [2024-06-27 23:40:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:47,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:48,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:48,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 293 transitions, 3111 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) [2024-06-27 23:40:48,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:48,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:48,783 INFO L124 PetriNetUnfolderBase]: 598/1039 cut-off events. [2024-06-27 23:40:48,783 INFO L125 PetriNetUnfolderBase]: For 240285/240285 co-relation queries the response was YES. [2024-06-27 23:40:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9818 conditions, 1039 events. 598/1039 cut-off events. For 240285/240285 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4856 event pairs, 84 based on Foata normal form. 1/1040 useless extension candidates. Maximal degree in co-relation 9668. Up to 501 conditions per place. [2024-06-27 23:40:48,795 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 190 selfloop transitions, 127 changer transitions 0/319 dead transitions. [2024-06-27 23:40:48,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 319 transitions, 4275 flow [2024-06-27 23:40:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:48,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:40:48,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-27 23:40:48,796 INFO L175 Difference]: Start difference. First operand has 322 places, 293 transitions, 3111 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:40:48,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 319 transitions, 4275 flow [2024-06-27 23:40:49,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 319 transitions, 4083 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:49,420 INFO L231 Difference]: Finished difference. Result has 326 places, 299 transitions, 3230 flow [2024-06-27 23:40:49,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3230, PETRI_PLACES=326, PETRI_TRANSITIONS=299} [2024-06-27 23:40:49,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-27 23:40:49,420 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 299 transitions, 3230 flow [2024-06-27 23:40:49,420 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) [2024-06-27 23:40:49,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:40:49,421 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)] === [2024-06-27 23:40:49,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 981108974, now seen corresponding path program 5 times [2024-06-27 23:40:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:49,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704779229] [2024-06-27 23:40:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:51,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704779229] [2024-06-27 23:40:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704779229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:51,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:51,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043502916] [2024-06-27 23:40:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:51,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:51,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:51,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 299 transitions, 3230 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) [2024-06-27 23:40:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:52,264 INFO L124 PetriNetUnfolderBase]: 601/1041 cut-off events. [2024-06-27 23:40:52,264 INFO L125 PetriNetUnfolderBase]: For 245220/245220 co-relation queries the response was YES. [2024-06-27 23:40:52,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 1041 events. 601/1041 cut-off events. For 245220/245220 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4866 event pairs, 110 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 9829. Up to 948 conditions per place. [2024-06-27 23:40:52,273 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 280 selfloop transitions, 36 changer transitions 0/318 dead transitions. [2024-06-27 23:40:52,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 318 transitions, 3932 flow [2024-06-27 23:40:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:40:52,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:40:52,274 INFO L175 Difference]: Start difference. First operand has 326 places, 299 transitions, 3230 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:40:52,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 318 transitions, 3932 flow [2024-06-27 23:40:52,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 318 transitions, 3781 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:52,953 INFO L231 Difference]: Finished difference. Result has 330 places, 301 transitions, 3184 flow [2024-06-27 23:40:52,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3079, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3184, PETRI_PLACES=330, PETRI_TRANSITIONS=301} [2024-06-27 23:40:52,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 298 predicate places. [2024-06-27 23:40:52,954 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 301 transitions, 3184 flow [2024-06-27 23:40:52,954 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) [2024-06-27 23:40:52,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:52,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:52,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:40:52,954 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)] === [2024-06-27 23:40:52,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:52,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1555930616, now seen corresponding path program 6 times [2024-06-27 23:40:52,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:52,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295454037] [2024-06-27 23:40:52,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:52,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:54,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:54,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295454037] [2024-06-27 23:40:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295454037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:54,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738202223] [2024-06-27 23:40:54,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:55,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:55,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 301 transitions, 3184 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) [2024-06-27 23:40:55,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:55,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:55,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:55,835 INFO L124 PetriNetUnfolderBase]: 614/1062 cut-off events. [2024-06-27 23:40:55,836 INFO L125 PetriNetUnfolderBase]: For 261409/261409 co-relation queries the response was YES. [2024-06-27 23:40:55,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 1062 events. 614/1062 cut-off events. For 261409/261409 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4985 event pairs, 68 based on Foata normal form. 1/1063 useless extension candidates. Maximal degree in co-relation 10201. Up to 681 conditions per place. [2024-06-27 23:40:55,847 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 221 selfloop transitions, 103 changer transitions 0/326 dead transitions. [2024-06-27 23:40:55,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 326 transitions, 4606 flow [2024-06-27 23:40:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:55,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:40:55,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:40:55,848 INFO L175 Difference]: Start difference. First operand has 330 places, 301 transitions, 3184 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:40:55,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 326 transitions, 4606 flow [2024-06-27 23:40:56,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 326 transitions, 4527 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:56,478 INFO L231 Difference]: Finished difference. Result has 332 places, 307 transitions, 3382 flow [2024-06-27 23:40:56,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3382, PETRI_PLACES=332, PETRI_TRANSITIONS=307} [2024-06-27 23:40:56,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-27 23:40:56,479 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 307 transitions, 3382 flow [2024-06-27 23:40:56,479 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) [2024-06-27 23:40:56,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:56,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:56,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:40:56,479 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)] === [2024-06-27 23:40:56,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash 984833841, now seen corresponding path program 2 times [2024-06-27 23:40:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486811642] [2024-06-27 23:40:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486811642] [2024-06-27 23:40:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486811642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:58,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:58,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549296679] [2024-06-27 23:40:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:58,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:58,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:58,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:40:58,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 307 transitions, 3382 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) [2024-06-27 23:40:58,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:58,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:40:58,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:59,427 INFO L124 PetriNetUnfolderBase]: 622/1078 cut-off events. [2024-06-27 23:40:59,428 INFO L125 PetriNetUnfolderBase]: For 272636/272636 co-relation queries the response was YES. [2024-06-27 23:40:59,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10699 conditions, 1078 events. 622/1078 cut-off events. For 272636/272636 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5096 event pairs, 96 based on Foata normal form. 1/1079 useless extension candidates. Maximal degree in co-relation 10545. Up to 710 conditions per place. [2024-06-27 23:40:59,441 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 233 selfloop transitions, 94 changer transitions 0/329 dead transitions. [2024-06-27 23:40:59,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 329 transitions, 4554 flow [2024-06-27 23:40:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:40:59,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:40:59,443 INFO L175 Difference]: Start difference. First operand has 332 places, 307 transitions, 3382 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:40:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 329 transitions, 4554 flow [2024-06-27 23:41:00,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 329 transitions, 4411 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:00,141 INFO L231 Difference]: Finished difference. Result has 337 places, 311 transitions, 3460 flow [2024-06-27 23:41:00,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3460, PETRI_PLACES=337, PETRI_TRANSITIONS=311} [2024-06-27 23:41:00,141 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-27 23:41:00,141 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 311 transitions, 3460 flow [2024-06-27 23:41:00,142 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) [2024-06-27 23:41:00,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:00,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:00,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:41:00,142 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)] === [2024-06-27 23:41:00,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:00,142 INFO L85 PathProgramCache]: Analyzing trace with hash 984828044, now seen corresponding path program 7 times [2024-06-27 23:41:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585721435] [2024-06-27 23:41:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:02,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585721435] [2024-06-27 23:41:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585721435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:02,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768687710] [2024-06-27 23:41:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:02,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:02,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:02,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:02,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 311 transitions, 3460 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) [2024-06-27 23:41:02,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:02,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:02,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:03,147 INFO L124 PetriNetUnfolderBase]: 620/1072 cut-off events. [2024-06-27 23:41:03,148 INFO L125 PetriNetUnfolderBase]: For 271539/271539 co-relation queries the response was YES. [2024-06-27 23:41:03,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10618 conditions, 1072 events. 620/1072 cut-off events. For 271539/271539 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5044 event pairs, 68 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 10463. Up to 692 conditions per place. [2024-06-27 23:41:03,160 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 225 selfloop transitions, 102 changer transitions 0/329 dead transitions. [2024-06-27 23:41:03,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 329 transitions, 4608 flow [2024-06-27 23:41:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:41:03,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:41:03,162 INFO L175 Difference]: Start difference. First operand has 337 places, 311 transitions, 3460 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:41:03,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 329 transitions, 4608 flow [2024-06-27 23:41:03,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 329 transitions, 4485 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:03,809 INFO L231 Difference]: Finished difference. Result has 341 places, 311 transitions, 3546 flow [2024-06-27 23:41:03,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3337, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3546, PETRI_PLACES=341, PETRI_TRANSITIONS=311} [2024-06-27 23:41:03,809 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 309 predicate places. [2024-06-27 23:41:03,809 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 311 transitions, 3546 flow [2024-06-27 23:41:03,809 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) [2024-06-27 23:41:03,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:03,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:03,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:41:03,810 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)] === [2024-06-27 23:41:03,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1708158065, now seen corresponding path program 5 times [2024-06-27 23:41:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095430295] [2024-06-27 23:41:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:05,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095430295] [2024-06-27 23:41:05,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095430295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:05,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216494736] [2024-06-27 23:41:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:05,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:05,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 311 transitions, 3546 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:05,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:05,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:05,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:06,168 INFO L124 PetriNetUnfolderBase]: 595/1050 cut-off events. [2024-06-27 23:41:06,168 INFO L125 PetriNetUnfolderBase]: For 277838/277838 co-relation queries the response was YES. [2024-06-27 23:41:06,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1050 events. 595/1050 cut-off events. For 277838/277838 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5017 event pairs, 57 based on Foata normal form. 1/1051 useless extension candidates. Maximal degree in co-relation 10429. Up to 748 conditions per place. [2024-06-27 23:41:06,180 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 87 changer transitions 0/326 dead transitions. [2024-06-27 23:41:06,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 326 transitions, 4158 flow [2024-06-27 23:41:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:41:06,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:41:06,182 INFO L175 Difference]: Start difference. First operand has 341 places, 311 transitions, 3546 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:41:06,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 326 transitions, 4158 flow [2024-06-27 23:41:06,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 326 transitions, 3942 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:06,853 INFO L231 Difference]: Finished difference. Result has 342 places, 313 transitions, 3539 flow [2024-06-27 23:41:06,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3539, PETRI_PLACES=342, PETRI_TRANSITIONS=313} [2024-06-27 23:41:06,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2024-06-27 23:41:06,854 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 313 transitions, 3539 flow [2024-06-27 23:41:06,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:06,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:06,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:41:06,855 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)] === [2024-06-27 23:41:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1126339990, now seen corresponding path program 8 times [2024-06-27 23:41:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21524227] [2024-06-27 23:41:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:08,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:08,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21524227] [2024-06-27 23:41:08,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21524227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:08,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227926182] [2024-06-27 23:41:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:08,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:08,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:09,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:09,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 313 transitions, 3539 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) [2024-06-27 23:41:09,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:09,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:09,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:09,712 INFO L124 PetriNetUnfolderBase]: 626/1083 cut-off events. [2024-06-27 23:41:09,712 INFO L125 PetriNetUnfolderBase]: For 281446/281446 co-relation queries the response was YES. [2024-06-27 23:41:09,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10809 conditions, 1083 events. 626/1083 cut-off events. For 281446/281446 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5102 event pairs, 61 based on Foata normal form. 1/1084 useless extension candidates. Maximal degree in co-relation 10651. Up to 701 conditions per place. [2024-06-27 23:41:09,726 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 108 changer transitions 0/332 dead transitions. [2024-06-27 23:41:09,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 332 transitions, 4721 flow [2024-06-27 23:41:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:41:09,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:41:09,728 INFO L175 Difference]: Start difference. First operand has 342 places, 313 transitions, 3539 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:41:09,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 332 transitions, 4721 flow [2024-06-27 23:41:10,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 332 transitions, 4532 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:10,594 INFO L231 Difference]: Finished difference. Result has 344 places, 315 transitions, 3595 flow [2024-06-27 23:41:10,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3595, PETRI_PLACES=344, PETRI_TRANSITIONS=315} [2024-06-27 23:41:10,594 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 312 predicate places. [2024-06-27 23:41:10,594 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 315 transitions, 3595 flow [2024-06-27 23:41:10,594 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) [2024-06-27 23:41:10,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:10,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:41:10,595 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)] === [2024-06-27 23:41:10,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1481301654, now seen corresponding path program 9 times [2024-06-27 23:41:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132119893] [2024-06-27 23:41:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132119893] [2024-06-27 23:41:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132119893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:12,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:12,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077343676] [2024-06-27 23:41:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:12,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:12,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:12,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:12,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 315 transitions, 3595 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) [2024-06-27 23:41:12,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:12,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:12,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:13,471 INFO L124 PetriNetUnfolderBase]: 629/1088 cut-off events. [2024-06-27 23:41:13,471 INFO L125 PetriNetUnfolderBase]: For 286585/286585 co-relation queries the response was YES. [2024-06-27 23:41:13,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 1088 events. 629/1088 cut-off events. For 286585/286585 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5133 event pairs, 61 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 10762. Up to 705 conditions per place. [2024-06-27 23:41:13,485 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 216 selfloop transitions, 116 changer transitions 0/334 dead transitions. [2024-06-27 23:41:13,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 334 transitions, 4789 flow [2024-06-27 23:41:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:41:13,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:41:13,486 INFO L175 Difference]: Start difference. First operand has 344 places, 315 transitions, 3595 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:41:13,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 334 transitions, 4789 flow [2024-06-27 23:41:14,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 334 transitions, 4542 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:14,420 INFO L231 Difference]: Finished difference. Result has 346 places, 317 transitions, 3613 flow [2024-06-27 23:41:14,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3613, PETRI_PLACES=346, PETRI_TRANSITIONS=317} [2024-06-27 23:41:14,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 314 predicate places. [2024-06-27 23:41:14,421 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 317 transitions, 3613 flow [2024-06-27 23:41:14,421 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) [2024-06-27 23:41:14,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:14,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:14,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:41:14,422 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)] === [2024-06-27 23:41:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1478721260, now seen corresponding path program 10 times [2024-06-27 23:41:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890557561] [2024-06-27 23:41:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:16,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:16,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890557561] [2024-06-27 23:41:16,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890557561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:16,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:16,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:16,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003215611] [2024-06-27 23:41:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:16,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:16,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:16,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:16,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 317 transitions, 3613 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) [2024-06-27 23:41:16,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:16,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:16,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:17,258 INFO L124 PetriNetUnfolderBase]: 627/1085 cut-off events. [2024-06-27 23:41:17,258 INFO L125 PetriNetUnfolderBase]: For 284656/284656 co-relation queries the response was YES. [2024-06-27 23:41:17,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10823 conditions, 1085 events. 627/1085 cut-off events. For 284656/284656 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5118 event pairs, 61 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 10664. Up to 703 conditions per place. [2024-06-27 23:41:17,270 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 222 selfloop transitions, 109 changer transitions 0/333 dead transitions. [2024-06-27 23:41:17,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 333 transitions, 4547 flow [2024-06-27 23:41:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:41:17,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:41:17,271 INFO L175 Difference]: Start difference. First operand has 346 places, 317 transitions, 3613 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:41:17,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 333 transitions, 4547 flow [2024-06-27 23:41:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 333 transitions, 4339 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:18,149 INFO L231 Difference]: Finished difference. Result has 349 places, 317 transitions, 3628 flow [2024-06-27 23:41:18,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3628, PETRI_PLACES=349, PETRI_TRANSITIONS=317} [2024-06-27 23:41:18,149 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-27 23:41:18,149 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 317 transitions, 3628 flow [2024-06-27 23:41:18,149 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) [2024-06-27 23:41:18,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:18,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:18,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:41:18,150 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)] === [2024-06-27 23:41:18,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1481100061, now seen corresponding path program 3 times [2024-06-27 23:41:18,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:18,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253796152] [2024-06-27 23:41:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:20,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253796152] [2024-06-27 23:41:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253796152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870498799] [2024-06-27 23:41:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:20,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:20,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:20,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:20,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 317 transitions, 3628 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) [2024-06-27 23:41:20,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:20,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:20,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:21,008 INFO L124 PetriNetUnfolderBase]: 630/1093 cut-off events. [2024-06-27 23:41:21,009 INFO L125 PetriNetUnfolderBase]: For 289456/289456 co-relation queries the response was YES. [2024-06-27 23:41:21,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10888 conditions, 1093 events. 630/1093 cut-off events. For 289456/289456 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5193 event pairs, 92 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 10728. Up to 723 conditions per place. [2024-06-27 23:41:21,022 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 237 selfloop transitions, 97 changer transitions 0/336 dead transitions. [2024-06-27 23:41:21,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 336 transitions, 4822 flow [2024-06-27 23:41:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:41:21,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:41:21,023 INFO L175 Difference]: Start difference. First operand has 349 places, 317 transitions, 3628 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:41:21,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 336 transitions, 4822 flow [2024-06-27 23:41:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 336 transitions, 4565 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:21,775 INFO L231 Difference]: Finished difference. Result has 349 places, 319 transitions, 3586 flow [2024-06-27 23:41:21,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3371, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=349, PETRI_TRANSITIONS=319} [2024-06-27 23:41:21,775 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 317 predicate places. [2024-06-27 23:41:21,775 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 319 transitions, 3586 flow [2024-06-27 23:41:21,775 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) [2024-06-27 23:41:21,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:21,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:21,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:41:21,776 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)] === [2024-06-27 23:41:21,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1128933621, now seen corresponding path program 4 times [2024-06-27 23:41:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:21,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187221296] [2024-06-27 23:41:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187221296] [2024-06-27 23:41:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187221296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:23,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:23,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365706447] [2024-06-27 23:41:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:23,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:23,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:23,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:23,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:23,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 319 transitions, 3586 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) [2024-06-27 23:41:23,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:23,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:24,583 INFO L124 PetriNetUnfolderBase]: 633/1097 cut-off events. [2024-06-27 23:41:24,583 INFO L125 PetriNetUnfolderBase]: For 294291/294291 co-relation queries the response was YES. [2024-06-27 23:41:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10909 conditions, 1097 events. 633/1097 cut-off events. For 294291/294291 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5181 event pairs, 92 based on Foata normal form. 1/1098 useless extension candidates. Maximal degree in co-relation 10748. Up to 727 conditions per place. [2024-06-27 23:41:24,597 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 232 selfloop transitions, 104 changer transitions 0/338 dead transitions. [2024-06-27 23:41:24,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 338 transitions, 4792 flow [2024-06-27 23:41:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:41:24,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:41:24,599 INFO L175 Difference]: Start difference. First operand has 349 places, 319 transitions, 3586 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:41:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 338 transitions, 4792 flow [2024-06-27 23:41:25,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 338 transitions, 4588 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:25,444 INFO L231 Difference]: Finished difference. Result has 351 places, 321 transitions, 3615 flow [2024-06-27 23:41:25,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3615, PETRI_PLACES=351, PETRI_TRANSITIONS=321} [2024-06-27 23:41:25,444 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 319 predicate places. [2024-06-27 23:41:25,444 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 321 transitions, 3615 flow [2024-06-27 23:41:25,444 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) [2024-06-27 23:41:25,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:25,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:41:25,445 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)] === [2024-06-27 23:41:25,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1128933900, now seen corresponding path program 1 times [2024-06-27 23:41:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:25,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169120957] [2024-06-27 23:41:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:25,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:27,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169120957] [2024-06-27 23:41:27,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169120957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:27,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:27,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712549288] [2024-06-27 23:41:27,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:27,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:27,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:27,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:27,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 321 transitions, 3615 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) [2024-06-27 23:41:27,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:27,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:27,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:27,984 INFO L124 PetriNetUnfolderBase]: 644/1115 cut-off events. [2024-06-27 23:41:27,984 INFO L125 PetriNetUnfolderBase]: For 313365/313365 co-relation queries the response was YES. [2024-06-27 23:41:27,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 1115 events. 644/1115 cut-off events. For 313365/313365 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5315 event pairs, 108 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 10998. Up to 830 conditions per place. [2024-06-27 23:41:27,995 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 263 selfloop transitions, 79 changer transitions 0/344 dead transitions. [2024-06-27 23:41:27,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 344 transitions, 4625 flow [2024-06-27 23:41:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:41:27,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:41:27,996 INFO L175 Difference]: Start difference. First operand has 351 places, 321 transitions, 3615 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:41:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 344 transitions, 4625 flow [2024-06-27 23:41:28,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 344 transitions, 4427 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:28,900 INFO L231 Difference]: Finished difference. Result has 354 places, 325 transitions, 3620 flow [2024-06-27 23:41:28,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3620, PETRI_PLACES=354, PETRI_TRANSITIONS=325} [2024-06-27 23:41:28,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 322 predicate places. [2024-06-27 23:41:28,901 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 325 transitions, 3620 flow [2024-06-27 23:41:28,901 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) [2024-06-27 23:41:28,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:28,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:41:28,901 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)] === [2024-06-27 23:41:28,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1128926181, now seen corresponding path program 5 times [2024-06-27 23:41:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175216972] [2024-06-27 23:41:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:28,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:30,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175216972] [2024-06-27 23:41:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175216972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:30,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477029239] [2024-06-27 23:41:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:30,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:30,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:31,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:31,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 325 transitions, 3620 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) [2024-06-27 23:41:31,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:31,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:31,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:31,836 INFO L124 PetriNetUnfolderBase]: 642/1112 cut-off events. [2024-06-27 23:41:31,836 INFO L125 PetriNetUnfolderBase]: For 304090/304090 co-relation queries the response was YES. [2024-06-27 23:41:31,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11074 conditions, 1112 events. 642/1112 cut-off events. For 304090/304090 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5284 event pairs, 91 based on Foata normal form. 1/1113 useless extension candidates. Maximal degree in co-relation 10911. Up to 743 conditions per place. [2024-06-27 23:41:31,849 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 101 changer transitions 0/341 dead transitions. [2024-06-27 23:41:31,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 341 transitions, 4578 flow [2024-06-27 23:41:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:41:31,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:41:31,850 INFO L175 Difference]: Start difference. First operand has 354 places, 325 transitions, 3620 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:41:31,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 341 transitions, 4578 flow [2024-06-27 23:41:32,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 341 transitions, 4509 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:32,703 INFO L231 Difference]: Finished difference. Result has 358 places, 325 transitions, 3758 flow [2024-06-27 23:41:32,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3758, PETRI_PLACES=358, PETRI_TRANSITIONS=325} [2024-06-27 23:41:32,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-27 23:41:32,703 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 325 transitions, 3758 flow [2024-06-27 23:41:32,703 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) [2024-06-27 23:41:32,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:32,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:41:32,704 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)] === [2024-06-27 23:41:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1027771158, now seen corresponding path program 11 times [2024-06-27 23:41:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242523079] [2024-06-27 23:41:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:35,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:35,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242523079] [2024-06-27 23:41:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242523079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:35,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129201042] [2024-06-27 23:41:35,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:35,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:35,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 325 transitions, 3758 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) [2024-06-27 23:41:35,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:35,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:35,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:35,819 INFO L124 PetriNetUnfolderBase]: 645/1114 cut-off events. [2024-06-27 23:41:35,819 INFO L125 PetriNetUnfolderBase]: For 309637/309637 co-relation queries the response was YES. [2024-06-27 23:41:35,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11314 conditions, 1114 events. 645/1114 cut-off events. For 309637/309637 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5283 event pairs, 56 based on Foata normal form. 1/1115 useless extension candidates. Maximal degree in co-relation 11149. Up to 1021 conditions per place. [2024-06-27 23:41:35,834 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 306 selfloop transitions, 35 changer transitions 0/343 dead transitions. [2024-06-27 23:41:35,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 343 transitions, 4514 flow [2024-06-27 23:41:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:41:35,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:41:35,835 INFO L175 Difference]: Start difference. First operand has 358 places, 325 transitions, 3758 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:41:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 343 transitions, 4514 flow [2024-06-27 23:41:36,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 343 transitions, 4290 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:36,673 INFO L231 Difference]: Finished difference. Result has 358 places, 327 transitions, 3643 flow [2024-06-27 23:41:36,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3643, PETRI_PLACES=358, PETRI_TRANSITIONS=327} [2024-06-27 23:41:36,674 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 326 predicate places. [2024-06-27 23:41:36,674 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 327 transitions, 3643 flow [2024-06-27 23:41:36,674 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) [2024-06-27 23:41:36,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:36,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:36,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:41:36,674 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)] === [2024-06-27 23:41:36,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1024052088, now seen corresponding path program 12 times [2024-06-27 23:41:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810275991] [2024-06-27 23:41:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:38,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810275991] [2024-06-27 23:41:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810275991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:38,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:38,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494600956] [2024-06-27 23:41:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:39,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:39,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 327 transitions, 3643 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) [2024-06-27 23:41:39,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:39,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:39,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:39,754 INFO L124 PetriNetUnfolderBase]: 658/1135 cut-off events. [2024-06-27 23:41:39,754 INFO L125 PetriNetUnfolderBase]: For 329478/329478 co-relation queries the response was YES. [2024-06-27 23:41:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11576 conditions, 1135 events. 658/1135 cut-off events. For 329478/329478 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5422 event pairs, 85 based on Foata normal form. 1/1136 useless extension candidates. Maximal degree in co-relation 11410. Up to 748 conditions per place. [2024-06-27 23:41:39,813 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 238 selfloop transitions, 111 changer transitions 0/351 dead transitions. [2024-06-27 23:41:39,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 351 transitions, 5191 flow [2024-06-27 23:41:39,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:39,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:41:39,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:41:39,814 INFO L175 Difference]: Start difference. First operand has 358 places, 327 transitions, 3643 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:41:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 351 transitions, 5191 flow [2024-06-27 23:41:40,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 351 transitions, 5110 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:40,825 INFO L231 Difference]: Finished difference. Result has 360 places, 333 transitions, 3861 flow [2024-06-27 23:41:40,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3861, PETRI_PLACES=360, PETRI_TRANSITIONS=333} [2024-06-27 23:41:40,826 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 328 predicate places. [2024-06-27 23:41:40,826 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 333 transitions, 3861 flow [2024-06-27 23:41:40,826 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) [2024-06-27 23:41:40,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:40,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:41:40,827 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)] === [2024-06-27 23:41:40,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1024046291, now seen corresponding path program 6 times [2024-06-27 23:41:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:40,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691968897] [2024-06-27 23:41:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:43,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:43,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691968897] [2024-06-27 23:41:43,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691968897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:43,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:43,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:43,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93833603] [2024-06-27 23:41:43,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:43,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:43,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:43,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:43,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:43,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 333 transitions, 3861 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) [2024-06-27 23:41:43,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:43,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:43,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:44,033 INFO L124 PetriNetUnfolderBase]: 666/1148 cut-off events. [2024-06-27 23:41:44,033 INFO L125 PetriNetUnfolderBase]: For 342753/342753 co-relation queries the response was YES. [2024-06-27 23:41:44,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11945 conditions, 1148 events. 666/1148 cut-off events. For 342753/342753 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5488 event pairs, 75 based on Foata normal form. 1/1149 useless extension candidates. Maximal degree in co-relation 11778. Up to 779 conditions per place. [2024-06-27 23:41:44,046 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 253 selfloop transitions, 99 changer transitions 0/354 dead transitions. [2024-06-27 23:41:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 354 transitions, 5133 flow [2024-06-27 23:41:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:41:44,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:41:44,048 INFO L175 Difference]: Start difference. First operand has 360 places, 333 transitions, 3861 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:41:44,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 354 transitions, 5133 flow [2024-06-27 23:41:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 354 transitions, 4958 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:44,931 INFO L231 Difference]: Finished difference. Result has 366 places, 337 transitions, 3921 flow [2024-06-27 23:41:44,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3686, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3921, PETRI_PLACES=366, PETRI_TRANSITIONS=337} [2024-06-27 23:41:44,932 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 334 predicate places. [2024-06-27 23:41:44,932 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 337 transitions, 3921 flow [2024-06-27 23:41:44,932 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) [2024-06-27 23:41:44,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:44,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:41:44,933 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)] === [2024-06-27 23:41:44,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1024046508, now seen corresponding path program 13 times [2024-06-27 23:41:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012325679] [2024-06-27 23:41:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:47,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:47,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012325679] [2024-06-27 23:41:47,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012325679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:47,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:47,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727271853] [2024-06-27 23:41:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:47,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:47,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:47,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 337 transitions, 3921 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) [2024-06-27 23:41:47,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:47,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:47,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:48,033 INFO L124 PetriNetUnfolderBase]: 664/1145 cut-off events. [2024-06-27 23:41:48,033 INFO L125 PetriNetUnfolderBase]: For 340738/340738 co-relation queries the response was YES. [2024-06-27 23:41:48,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11836 conditions, 1145 events. 664/1145 cut-off events. For 340738/340738 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5455 event pairs, 85 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 11667. Up to 759 conditions per place. [2024-06-27 23:41:48,048 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 240 selfloop transitions, 112 changer transitions 0/354 dead transitions. [2024-06-27 23:41:48,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 354 transitions, 5165 flow [2024-06-27 23:41:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:41:48,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:41:48,050 INFO L175 Difference]: Start difference. First operand has 366 places, 337 transitions, 3921 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:41:48,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 354 transitions, 5165 flow [2024-06-27 23:41:49,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 354 transitions, 5023 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:49,064 INFO L231 Difference]: Finished difference. Result has 369 places, 337 transitions, 4008 flow [2024-06-27 23:41:49,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4008, PETRI_PLACES=369, PETRI_TRANSITIONS=337} [2024-06-27 23:41:49,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 337 predicate places. [2024-06-27 23:41:49,064 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 337 transitions, 4008 flow [2024-06-27 23:41:49,064 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) [2024-06-27 23:41:49,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:49,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:49,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:41:49,064 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)] === [2024-06-27 23:41:49,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:49,065 INFO L85 PathProgramCache]: Analyzing trace with hash -880155978, now seen corresponding path program 14 times [2024-06-27 23:41:49,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:49,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468071660] [2024-06-27 23:41:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:51,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468071660] [2024-06-27 23:41:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468071660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:51,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:51,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279304830] [2024-06-27 23:41:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:51,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:51,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 337 transitions, 4008 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) [2024-06-27 23:41:51,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:51,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:51,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:52,196 INFO L124 PetriNetUnfolderBase]: 677/1166 cut-off events. [2024-06-27 23:41:52,196 INFO L125 PetriNetUnfolderBase]: For 362529/362529 co-relation queries the response was YES. [2024-06-27 23:41:52,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12319 conditions, 1166 events. 677/1166 cut-off events. For 362529/362529 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5591 event pairs, 85 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 12150. Up to 775 conditions per place. [2024-06-27 23:41:52,209 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 245 selfloop transitions, 114 changer transitions 0/361 dead transitions. [2024-06-27 23:41:52,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 361 transitions, 5860 flow [2024-06-27 23:41:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 23:41:52,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-27 23:41:52,210 INFO L175 Difference]: Start difference. First operand has 369 places, 337 transitions, 4008 flow. Second operand 10 states and 141 transitions. [2024-06-27 23:41:52,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 361 transitions, 5860 flow [2024-06-27 23:41:53,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 361 transitions, 5619 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:53,282 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4090 flow [2024-06-27 23:41:53,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3779, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4090, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2024-06-27 23:41:53,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 338 predicate places. [2024-06-27 23:41:53,283 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4090 flow [2024-06-27 23:41:53,283 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) [2024-06-27 23:41:53,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:53,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:53,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:41:53,284 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)] === [2024-06-27 23:41:53,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:53,284 INFO L85 PathProgramCache]: Analyzing trace with hash -880155761, now seen corresponding path program 7 times [2024-06-27 23:41:53,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:53,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216260112] [2024-06-27 23:41:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:53,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:55,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:55,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216260112] [2024-06-27 23:41:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216260112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:55,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285036570] [2024-06-27 23:41:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:55,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:41:55,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4090 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) [2024-06-27 23:41:55,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:55,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:41:55,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:56,358 INFO L124 PetriNetUnfolderBase]: 685/1179 cut-off events. [2024-06-27 23:41:56,358 INFO L125 PetriNetUnfolderBase]: For 376245/376245 co-relation queries the response was YES. [2024-06-27 23:41:56,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12533 conditions, 1179 events. 685/1179 cut-off events. For 376245/376245 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5671 event pairs, 75 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 12363. Up to 807 conditions per place. [2024-06-27 23:41:56,372 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 265 selfloop transitions, 97 changer transitions 0/364 dead transitions. [2024-06-27 23:41:56,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 364 transitions, 5648 flow [2024-06-27 23:41:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:41:56,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-27 23:41:56,374 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4090 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:41:56,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 364 transitions, 5648 flow [2024-06-27 23:41:57,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 364 transitions, 5430 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:57,608 INFO L231 Difference]: Finished difference. Result has 376 places, 347 transitions, 4107 flow [2024-06-27 23:41:57,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4107, PETRI_PLACES=376, PETRI_TRANSITIONS=347} [2024-06-27 23:41:57,609 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 344 predicate places. [2024-06-27 23:41:57,609 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 347 transitions, 4107 flow [2024-06-27 23:41:57,609 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) [2024-06-27 23:41:57,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:57,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:57,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:41:57,609 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)] === [2024-06-27 23:41:57,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:57,610 INFO L85 PathProgramCache]: Analyzing trace with hash -880161558, now seen corresponding path program 15 times [2024-06-27 23:41:57,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:57,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570030322] [2024-06-27 23:41:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:57,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570030322] [2024-06-27 23:41:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570030322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:59,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:59,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:59,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174974565] [2024-06-27 23:41:59,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:59,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:00,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:00,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 347 transitions, 4107 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) [2024-06-27 23:42:00,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:00,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:00,769 INFO L124 PetriNetUnfolderBase]: 683/1176 cut-off events. [2024-06-27 23:42:00,769 INFO L125 PetriNetUnfolderBase]: For 373956/373956 co-relation queries the response was YES. [2024-06-27 23:42:00,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 1176 events. 683/1176 cut-off events. For 373956/373956 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5661 event pairs, 85 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 12224. Up to 786 conditions per place. [2024-06-27 23:42:00,784 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 115 changer transitions 0/364 dead transitions. [2024-06-27 23:42:00,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 364 transitions, 5635 flow [2024-06-27 23:42:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:00,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:00,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:42:00,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:42:00,786 INFO L175 Difference]: Start difference. First operand has 376 places, 347 transitions, 4107 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:42:00,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 364 transitions, 5635 flow [2024-06-27 23:42:01,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 364 transitions, 5460 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:01,968 INFO L231 Difference]: Finished difference. Result has 379 places, 347 transitions, 4167 flow [2024-06-27 23:42:01,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3932, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4167, PETRI_PLACES=379, PETRI_TRANSITIONS=347} [2024-06-27 23:42:01,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 347 predicate places. [2024-06-27 23:42:01,969 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 347 transitions, 4167 flow [2024-06-27 23:42:01,969 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) [2024-06-27 23:42:01,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:01,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:01,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:42:01,969 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)] === [2024-06-27 23:42:01,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash -879954168, now seen corresponding path program 16 times [2024-06-27 23:42:01,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:01,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121625560] [2024-06-27 23:42:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121625560] [2024-06-27 23:42:04,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121625560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:04,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:04,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244475536] [2024-06-27 23:42:04,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:04,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 347 transitions, 4167 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) [2024-06-27 23:42:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:05,116 INFO L124 PetriNetUnfolderBase]: 681/1173 cut-off events. [2024-06-27 23:42:05,116 INFO L125 PetriNetUnfolderBase]: For 371881/371881 co-relation queries the response was YES. [2024-06-27 23:42:05,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12351 conditions, 1173 events. 681/1173 cut-off events. For 371881/371881 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5637 event pairs, 85 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 12179. Up to 784 conditions per place. [2024-06-27 23:42:05,133 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 244 selfloop transitions, 117 changer transitions 0/363 dead transitions. [2024-06-27 23:42:05,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 363 transitions, 5441 flow [2024-06-27 23:42:05,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:05,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:42:05,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:42:05,136 INFO L175 Difference]: Start difference. First operand has 379 places, 347 transitions, 4167 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:42:05,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 363 transitions, 5441 flow [2024-06-27 23:42:06,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 363 transitions, 5209 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:06,476 INFO L231 Difference]: Finished difference. Result has 381 places, 347 transitions, 4174 flow [2024-06-27 23:42:06,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4174, PETRI_PLACES=381, PETRI_TRANSITIONS=347} [2024-06-27 23:42:06,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-27 23:42:06,477 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 347 transitions, 4174 flow [2024-06-27 23:42:06,477 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) [2024-06-27 23:42:06,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:06,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:42:06,477 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)] === [2024-06-27 23:42:06,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash -879946511, now seen corresponding path program 8 times [2024-06-27 23:42:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151049852] [2024-06-27 23:42:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:06,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:08,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:08,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151049852] [2024-06-27 23:42:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151049852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:08,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:08,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457946177] [2024-06-27 23:42:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:08,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:08,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:08,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:08,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:08,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 347 transitions, 4174 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) [2024-06-27 23:42:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:09,631 INFO L124 PetriNetUnfolderBase]: 684/1178 cut-off events. [2024-06-27 23:42:09,631 INFO L125 PetriNetUnfolderBase]: For 377631/377631 co-relation queries the response was YES. [2024-06-27 23:42:09,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 1178 events. 684/1178 cut-off events. For 377631/377631 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5679 event pairs, 75 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 12247. Up to 805 conditions per place. [2024-06-27 23:42:09,646 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 262 selfloop transitions, 102 changer transitions 0/366 dead transitions. [2024-06-27 23:42:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 366 transitions, 5738 flow [2024-06-27 23:42:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:42:09,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:42:09,648 INFO L175 Difference]: Start difference. First operand has 381 places, 347 transitions, 4174 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:42:09,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 366 transitions, 5738 flow [2024-06-27 23:42:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 366 transitions, 5488 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:10,852 INFO L231 Difference]: Finished difference. Result has 382 places, 349 transitions, 4153 flow [2024-06-27 23:42:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4153, PETRI_PLACES=382, PETRI_TRANSITIONS=349} [2024-06-27 23:42:10,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 350 predicate places. [2024-06-27 23:42:10,852 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 349 transitions, 4153 flow [2024-06-27 23:42:10,853 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) [2024-06-27 23:42:10,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:10,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:10,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:42:10,853 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)] === [2024-06-27 23:42:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash -879946232, now seen corresponding path program 2 times [2024-06-27 23:42:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:10,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053540252] [2024-06-27 23:42:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:12,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:12,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053540252] [2024-06-27 23:42:12,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053540252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:12,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:12,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945232109] [2024-06-27 23:42:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:12,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:12,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:12,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 349 transitions, 4153 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) [2024-06-27 23:42:12,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:12,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:12,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:13,578 INFO L124 PetriNetUnfolderBase]: 700/1207 cut-off events. [2024-06-27 23:42:13,578 INFO L125 PetriNetUnfolderBase]: For 408730/408730 co-relation queries the response was YES. [2024-06-27 23:42:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12813 conditions, 1207 events. 700/1207 cut-off events. For 408730/408730 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5864 event pairs, 114 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 12638. Up to 911 conditions per place. [2024-06-27 23:42:13,594 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 302 selfloop transitions, 69 changer transitions 0/373 dead transitions. [2024-06-27 23:42:13,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 373 transitions, 5511 flow [2024-06-27 23:42:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:42:13,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-27 23:42:13,595 INFO L175 Difference]: Start difference. First operand has 382 places, 349 transitions, 4153 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:42:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 373 transitions, 5511 flow [2024-06-27 23:42:14,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 373 transitions, 5314 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:14,581 INFO L231 Difference]: Finished difference. Result has 385 places, 353 transitions, 4139 flow [2024-06-27 23:42:14,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4139, PETRI_PLACES=385, PETRI_TRANSITIONS=353} [2024-06-27 23:42:14,581 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 353 predicate places. [2024-06-27 23:42:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 353 transitions, 4139 flow [2024-06-27 23:42:14,582 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) [2024-06-27 23:42:14,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:14,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:14,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:42:14,582 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)] === [2024-06-27 23:42:14,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:14,583 INFO L85 PathProgramCache]: Analyzing trace with hash -527578261, now seen corresponding path program 9 times [2024-06-27 23:42:14,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:14,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043928304] [2024-06-27 23:42:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:14,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:16,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:16,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043928304] [2024-06-27 23:42:16,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043928304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:16,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:16,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427407845] [2024-06-27 23:42:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:16,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:16,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:16,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 353 transitions, 4139 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) [2024-06-27 23:42:16,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:16,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:16,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:17,699 INFO L124 PetriNetUnfolderBase]: 698/1201 cut-off events. [2024-06-27 23:42:17,699 INFO L125 PetriNetUnfolderBase]: For 397665/397665 co-relation queries the response was YES. [2024-06-27 23:42:17,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12667 conditions, 1201 events. 698/1201 cut-off events. For 397665/397665 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5814 event pairs, 76 based on Foata normal form. 1/1202 useless extension candidates. Maximal degree in co-relation 12491. Up to 829 conditions per place. [2024-06-27 23:42:17,712 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 267 selfloop transitions, 100 changer transitions 0/369 dead transitions. [2024-06-27 23:42:17,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 369 transitions, 5437 flow [2024-06-27 23:42:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:42:17,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:42:17,713 INFO L175 Difference]: Start difference. First operand has 385 places, 353 transitions, 4139 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:42:17,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 369 transitions, 5437 flow [2024-06-27 23:42:18,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 369 transitions, 5341 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:18,853 INFO L231 Difference]: Finished difference. Result has 389 places, 353 transitions, 4248 flow [2024-06-27 23:42:18,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4248, PETRI_PLACES=389, PETRI_TRANSITIONS=353} [2024-06-27 23:42:18,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-27 23:42:18,854 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 353 transitions, 4248 flow [2024-06-27 23:42:18,854 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) [2024-06-27 23:42:18,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:18,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:18,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:42:18,854 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)] === [2024-06-27 23:42:18,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:18,854 INFO L85 PathProgramCache]: Analyzing trace with hash 955032904, now seen corresponding path program 3 times [2024-06-27 23:42:18,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:18,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447949046] [2024-06-27 23:42:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:18,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:20,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:20,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447949046] [2024-06-27 23:42:20,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447949046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:20,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:20,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:20,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014791199] [2024-06-27 23:42:20,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:20,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:20,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:20,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:20,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:20,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:20,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 353 transitions, 4248 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) [2024-06-27 23:42:20,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:20,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:20,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:21,530 INFO L124 PetriNetUnfolderBase]: 704/1215 cut-off events. [2024-06-27 23:42:21,530 INFO L125 PetriNetUnfolderBase]: For 412755/412755 co-relation queries the response was YES. [2024-06-27 23:42:21,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12827 conditions, 1215 events. 704/1215 cut-off events. For 412755/412755 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5905 event pairs, 105 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 12650. Up to 914 conditions per place. [2024-06-27 23:42:21,546 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 300 selfloop transitions, 72 changer transitions 0/374 dead transitions. [2024-06-27 23:42:21,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 374 transitions, 5594 flow [2024-06-27 23:42:21,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:42:21,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:42:21,548 INFO L175 Difference]: Start difference. First operand has 389 places, 353 transitions, 4248 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:42:21,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 374 transitions, 5594 flow [2024-06-27 23:42:22,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 374 transitions, 5375 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:42:22,735 INFO L231 Difference]: Finished difference. Result has 389 places, 355 transitions, 4200 flow [2024-06-27 23:42:22,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4200, PETRI_PLACES=389, PETRI_TRANSITIONS=355} [2024-06-27 23:42:22,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-27 23:42:22,736 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 355 transitions, 4200 flow [2024-06-27 23:42:22,736 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) [2024-06-27 23:42:22,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:22,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:22,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:42:22,736 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)] === [2024-06-27 23:42:22,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 98536679, now seen corresponding path program 10 times [2024-06-27 23:42:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891367461] [2024-06-27 23:42:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:24,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:24,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891367461] [2024-06-27 23:42:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891367461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:24,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:24,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224158022] [2024-06-27 23:42:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:24,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:25,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:25,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 355 transitions, 4200 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) [2024-06-27 23:42:25,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:25,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:25,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:25,902 INFO L124 PetriNetUnfolderBase]: 712/1225 cut-off events. [2024-06-27 23:42:25,902 INFO L125 PetriNetUnfolderBase]: For 419212/419212 co-relation queries the response was YES. [2024-06-27 23:42:25,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13005 conditions, 1225 events. 712/1225 cut-off events. For 419212/419212 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5940 event pairs, 62 based on Foata normal form. 1/1226 useless extension candidates. Maximal degree in co-relation 12827. Up to 849 conditions per place. [2024-06-27 23:42:25,919 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 266 selfloop transitions, 107 changer transitions 0/375 dead transitions. [2024-06-27 23:42:25,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 375 transitions, 5822 flow [2024-06-27 23:42:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:42:25,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:42:25,921 INFO L175 Difference]: Start difference. First operand has 389 places, 355 transitions, 4200 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:42:25,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 375 transitions, 5822 flow [2024-06-27 23:42:27,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 375 transitions, 5663 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:27,082 INFO L231 Difference]: Finished difference. Result has 391 places, 359 transitions, 4300 flow [2024-06-27 23:42:27,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4300, PETRI_PLACES=391, PETRI_TRANSITIONS=359} [2024-06-27 23:42:27,083 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-27 23:42:27,083 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 359 transitions, 4300 flow [2024-06-27 23:42:27,083 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) [2024-06-27 23:42:27,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:27,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:27,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:42:27,083 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)] === [2024-06-27 23:42:27,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash 105945989, now seen corresponding path program 11 times [2024-06-27 23:42:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576062503] [2024-06-27 23:42:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576062503] [2024-06-27 23:42:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576062503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:29,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129798444] [2024-06-27 23:42:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:29,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:29,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 359 transitions, 4300 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) [2024-06-27 23:42:29,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:29,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:29,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:30,191 INFO L124 PetriNetUnfolderBase]: 715/1230 cut-off events. [2024-06-27 23:42:30,191 INFO L125 PetriNetUnfolderBase]: For 425568/425568 co-relation queries the response was YES. [2024-06-27 23:42:30,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13117 conditions, 1230 events. 715/1230 cut-off events. For 425568/425568 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5952 event pairs, 62 based on Foata normal form. 1/1231 useless extension candidates. Maximal degree in co-relation 12938. Up to 853 conditions per place. [2024-06-27 23:42:30,208 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 127 changer transitions 0/376 dead transitions. [2024-06-27 23:42:30,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 376 transitions, 5644 flow [2024-06-27 23:42:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:42:30,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-27 23:42:30,209 INFO L175 Difference]: Start difference. First operand has 391 places, 359 transitions, 4300 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:42:30,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 376 transitions, 5644 flow [2024-06-27 23:42:31,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 376 transitions, 5419 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:31,443 INFO L231 Difference]: Finished difference. Result has 394 places, 361 transitions, 4358 flow [2024-06-27 23:42:31,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4358, PETRI_PLACES=394, PETRI_TRANSITIONS=361} [2024-06-27 23:42:31,444 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 362 predicate places. [2024-06-27 23:42:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 361 transitions, 4358 flow [2024-06-27 23:42:31,444 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) [2024-06-27 23:42:31,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:31,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:31,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:42:31,445 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)] === [2024-06-27 23:42:31,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 105946268, now seen corresponding path program 4 times [2024-06-27 23:42:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:31,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261252964] [2024-06-27 23:42:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:33,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:33,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261252964] [2024-06-27 23:42:33,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261252964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:33,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:33,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:33,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618420141] [2024-06-27 23:42:33,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:33,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:33,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:33,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:33,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:33,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:33,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 361 transitions, 4358 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) [2024-06-27 23:42:33,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:33,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:34,401 INFO L124 PetriNetUnfolderBase]: 731/1259 cut-off events. [2024-06-27 23:42:34,401 INFO L125 PetriNetUnfolderBase]: For 458882/458882 co-relation queries the response was YES. [2024-06-27 23:42:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13594 conditions, 1259 events. 731/1259 cut-off events. For 458882/458882 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6151 event pairs, 106 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 13414. Up to 947 conditions per place. [2024-06-27 23:42:34,426 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 302 selfloop transitions, 81 changer transitions 0/385 dead transitions. [2024-06-27 23:42:34,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 385 transitions, 6032 flow [2024-06-27 23:42:34,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:42:34,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:42:34,428 INFO L175 Difference]: Start difference. First operand has 394 places, 361 transitions, 4358 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:42:34,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 385 transitions, 6032 flow [2024-06-27 23:42:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 385 transitions, 5818 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:35,658 INFO L231 Difference]: Finished difference. Result has 397 places, 365 transitions, 4355 flow [2024-06-27 23:42:35,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4355, PETRI_PLACES=397, PETRI_TRANSITIONS=365} [2024-06-27 23:42:35,659 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 365 predicate places. [2024-06-27 23:42:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 365 transitions, 4355 flow [2024-06-27 23:42:35,659 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) [2024-06-27 23:42:35,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:42:35,659 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)] === [2024-06-27 23:42:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 98529239, now seen corresponding path program 12 times [2024-06-27 23:42:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271562190] [2024-06-27 23:42:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:35,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:37,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271562190] [2024-06-27 23:42:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271562190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500493152] [2024-06-27 23:42:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:37,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:37,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:37,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:37,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:38,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:38,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 365 transitions, 4355 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) [2024-06-27 23:42:38,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:38,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:38,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:38,749 INFO L124 PetriNetUnfolderBase]: 734/1261 cut-off events. [2024-06-27 23:42:38,749 INFO L125 PetriNetUnfolderBase]: For 456515/456515 co-relation queries the response was YES. [2024-06-27 23:42:38,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13611 conditions, 1261 events. 734/1261 cut-off events. For 456515/456515 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6121 event pairs, 65 based on Foata normal form. 1/1262 useless extension candidates. Maximal degree in co-relation 13430. Up to 883 conditions per place. [2024-06-27 23:42:38,766 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 271 selfloop transitions, 110 changer transitions 0/383 dead transitions. [2024-06-27 23:42:38,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 383 transitions, 5989 flow [2024-06-27 23:42:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:42:38,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:42:38,767 INFO L175 Difference]: Start difference. First operand has 397 places, 365 transitions, 4355 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:42:38,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 383 transitions, 5989 flow [2024-06-27 23:42:40,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 383 transitions, 5836 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:40,128 INFO L231 Difference]: Finished difference. Result has 401 places, 367 transitions, 4445 flow [2024-06-27 23:42:40,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4445, PETRI_PLACES=401, PETRI_TRANSITIONS=367} [2024-06-27 23:42:40,128 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 369 predicate places. [2024-06-27 23:42:40,129 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 367 transitions, 4445 flow [2024-06-27 23:42:40,129 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) [2024-06-27 23:42:40,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:40,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:42:40,129 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)] === [2024-06-27 23:42:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash 98529022, now seen corresponding path program 17 times [2024-06-27 23:42:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566006446] [2024-06-27 23:42:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566006446] [2024-06-27 23:42:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566006446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:42,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087509813] [2024-06-27 23:42:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:42,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:42,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:42,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:42,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:42,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:42,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 367 transitions, 4445 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) [2024-06-27 23:42:42,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:42,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:42,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:43,203 INFO L124 PetriNetUnfolderBase]: 742/1274 cut-off events. [2024-06-27 23:42:43,204 INFO L125 PetriNetUnfolderBase]: For 472836/472836 co-relation queries the response was YES. [2024-06-27 23:42:43,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13885 conditions, 1274 events. 742/1274 cut-off events. For 472836/472836 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6205 event pairs, 68 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 13703. Up to 881 conditions per place. [2024-06-27 23:42:43,220 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 261 selfloop transitions, 124 changer transitions 0/387 dead transitions. [2024-06-27 23:42:43,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 387 transitions, 6131 flow [2024-06-27 23:42:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:42:43,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:42:43,222 INFO L175 Difference]: Start difference. First operand has 401 places, 367 transitions, 4445 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:42:43,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 387 transitions, 6131 flow [2024-06-27 23:42:44,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 387 transitions, 5922 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:44,567 INFO L231 Difference]: Finished difference. Result has 403 places, 371 transitions, 4545 flow [2024-06-27 23:42:44,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4236, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4545, PETRI_PLACES=403, PETRI_TRANSITIONS=371} [2024-06-27 23:42:44,568 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 371 predicate places. [2024-06-27 23:42:44,568 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 371 transitions, 4545 flow [2024-06-27 23:42:44,568 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) [2024-06-27 23:42:44,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:44,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:44,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:42:44,568 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)] === [2024-06-27 23:42:44,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 98321632, now seen corresponding path program 18 times [2024-06-27 23:42:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520537254] [2024-06-27 23:42:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:46,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:46,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520537254] [2024-06-27 23:42:46,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520537254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:46,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:46,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431546669] [2024-06-27 23:42:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:46,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:46,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:46,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 371 transitions, 4545 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) [2024-06-27 23:42:46,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:46,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:46,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:47,750 INFO L124 PetriNetUnfolderBase]: 745/1279 cut-off events. [2024-06-27 23:42:47,750 INFO L125 PetriNetUnfolderBase]: For 479987/479987 co-relation queries the response was YES. [2024-06-27 23:42:47,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14008 conditions, 1279 events. 745/1279 cut-off events. For 479987/479987 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6251 event pairs, 68 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 13826. Up to 885 conditions per place. [2024-06-27 23:42:47,767 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 257 selfloop transitions, 129 changer transitions 0/388 dead transitions. [2024-06-27 23:42:47,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 388 transitions, 5937 flow [2024-06-27 23:42:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:42:47,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:42:47,768 INFO L175 Difference]: Start difference. First operand has 403 places, 371 transitions, 4545 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:42:47,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 388 transitions, 5937 flow [2024-06-27 23:42:49,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 388 transitions, 5659 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:49,215 INFO L231 Difference]: Finished difference. Result has 406 places, 373 transitions, 4562 flow [2024-06-27 23:42:49,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4562, PETRI_PLACES=406, PETRI_TRANSITIONS=373} [2024-06-27 23:42:49,216 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 374 predicate places. [2024-06-27 23:42:49,216 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 373 transitions, 4562 flow [2024-06-27 23:42:49,216 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) [2024-06-27 23:42:49,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:49,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:42:49,216 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)] === [2024-06-27 23:42:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 98321477, now seen corresponding path program 6 times [2024-06-27 23:42:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833714781] [2024-06-27 23:42:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833714781] [2024-06-27 23:42:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833714781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:50,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114984379] [2024-06-27 23:42:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:50,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:51,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:51,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 373 transitions, 4562 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:51,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:51,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:51,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:51,629 INFO L124 PetriNetUnfolderBase]: 713/1249 cut-off events. [2024-06-27 23:42:51,629 INFO L125 PetriNetUnfolderBase]: For 488106/488106 co-relation queries the response was YES. [2024-06-27 23:42:51,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13869 conditions, 1249 events. 713/1249 cut-off events. For 488106/488106 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6245 event pairs, 65 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 13686. Up to 924 conditions per place. [2024-06-27 23:42:51,646 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 243 selfloop transitions, 83 changer transitions 0/386 dead transitions. [2024-06-27 23:42:51,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 386 transitions, 5268 flow [2024-06-27 23:42:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:42:51,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:42:51,647 INFO L175 Difference]: Start difference. First operand has 406 places, 373 transitions, 4562 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:42:51,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 386 transitions, 5268 flow [2024-06-27 23:42:53,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 386 transitions, 4985 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:53,156 INFO L231 Difference]: Finished difference. Result has 408 places, 375 transitions, 4483 flow [2024-06-27 23:42:53,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4279, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4483, PETRI_PLACES=408, PETRI_TRANSITIONS=375} [2024-06-27 23:42:53,157 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-27 23:42:53,157 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 375 transitions, 4483 flow [2024-06-27 23:42:53,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:53,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:53,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:53,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:42:53,157 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)] === [2024-06-27 23:42:53,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:53,158 INFO L85 PathProgramCache]: Analyzing trace with hash 105955568, now seen corresponding path program 5 times [2024-06-27 23:42:53,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:53,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645272751] [2024-06-27 23:42:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:53,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645272751] [2024-06-27 23:42:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645272751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:55,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:55,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797991843] [2024-06-27 23:42:55,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:55,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:55,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:55,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 375 transitions, 4483 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) [2024-06-27 23:42:55,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:55,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:55,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:55,831 INFO L124 PetriNetUnfolderBase]: 744/1281 cut-off events. [2024-06-27 23:42:55,831 INFO L125 PetriNetUnfolderBase]: For 482978/482978 co-relation queries the response was YES. [2024-06-27 23:42:55,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13747 conditions, 1281 events. 744/1281 cut-off events. For 482978/482978 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6292 event pairs, 106 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 13562. Up to 972 conditions per place. [2024-06-27 23:42:55,849 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 306 selfloop transitions, 85 changer transitions 0/393 dead transitions. [2024-06-27 23:42:55,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 393 transitions, 5873 flow [2024-06-27 23:42:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:42:55,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:42:55,850 INFO L175 Difference]: Start difference. First operand has 408 places, 375 transitions, 4483 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:42:55,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 393 transitions, 5873 flow [2024-06-27 23:42:57,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 393 transitions, 5681 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:57,291 INFO L231 Difference]: Finished difference. Result has 411 places, 375 transitions, 4466 flow [2024-06-27 23:42:57,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4291, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4466, PETRI_PLACES=411, PETRI_TRANSITIONS=375} [2024-06-27 23:42:57,291 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 379 predicate places. [2024-06-27 23:42:57,291 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 375 transitions, 4466 flow [2024-06-27 23:42:57,291 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) [2024-06-27 23:42:57,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:57,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:57,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:42:57,292 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)] === [2024-06-27 23:42:57,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:57,292 INFO L85 PathProgramCache]: Analyzing trace with hash 98327212, now seen corresponding path program 19 times [2024-06-27 23:42:57,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:57,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047462951] [2024-06-27 23:42:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:57,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047462951] [2024-06-27 23:42:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047462951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209780218] [2024-06-27 23:42:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:59,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:59,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:42:59,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 375 transitions, 4466 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) [2024-06-27 23:42:59,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:59,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:42:59,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:00,454 INFO L124 PetriNetUnfolderBase]: 742/1275 cut-off events. [2024-06-27 23:43:00,454 INFO L125 PetriNetUnfolderBase]: For 470244/470244 co-relation queries the response was YES. [2024-06-27 23:43:00,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13640 conditions, 1275 events. 742/1275 cut-off events. For 470244/470244 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6226 event pairs, 67 based on Foata normal form. 1/1276 useless extension candidates. Maximal degree in co-relation 13454. Up to 882 conditions per place. [2024-06-27 23:43:00,472 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 261 selfloop transitions, 127 changer transitions 0/390 dead transitions. [2024-06-27 23:43:00,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 390 transitions, 5842 flow [2024-06-27 23:43:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:43:00,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:43:00,473 INFO L175 Difference]: Start difference. First operand has 411 places, 375 transitions, 4466 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:43:00,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 390 transitions, 5842 flow [2024-06-27 23:43:01,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 390 transitions, 5679 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:01,837 INFO L231 Difference]: Finished difference. Result has 412 places, 375 transitions, 4562 flow [2024-06-27 23:43:01,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4562, PETRI_PLACES=412, PETRI_TRANSITIONS=375} [2024-06-27 23:43:01,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-27 23:43:01,837 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 375 transitions, 4562 flow [2024-06-27 23:43:01,837 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) [2024-06-27 23:43:01,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:01,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:01,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:43:01,838 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)] === [2024-06-27 23:43:01,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:01,839 INFO L85 PathProgramCache]: Analyzing trace with hash 105686519, now seen corresponding path program 13 times [2024-06-27 23:43:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:01,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670007856] [2024-06-27 23:43:01,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:04,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670007856] [2024-06-27 23:43:04,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670007856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:04,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:04,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466484997] [2024-06-27 23:43:04,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:04,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:04,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 375 transitions, 4562 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) [2024-06-27 23:43:04,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:04,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:04,960 INFO L124 PetriNetUnfolderBase]: 745/1280 cut-off events. [2024-06-27 23:43:04,960 INFO L125 PetriNetUnfolderBase]: For 477303/477303 co-relation queries the response was YES. [2024-06-27 23:43:04,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13772 conditions, 1280 events. 745/1280 cut-off events. For 477303/477303 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6254 event pairs, 64 based on Foata normal form. 1/1281 useless extension candidates. Maximal degree in co-relation 13586. Up to 901 conditions per place. [2024-06-27 23:43:04,977 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 272 selfloop transitions, 119 changer transitions 0/393 dead transitions. [2024-06-27 23:43:04,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 393 transitions, 6252 flow [2024-06-27 23:43:04,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:04,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:04,979 INFO L175 Difference]: Start difference. First operand has 412 places, 375 transitions, 4562 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:04,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 393 transitions, 6252 flow [2024-06-27 23:43:06,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 393 transitions, 6003 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:06,393 INFO L231 Difference]: Finished difference. Result has 415 places, 377 transitions, 4574 flow [2024-06-27 23:43:06,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4313, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4574, PETRI_PLACES=415, PETRI_TRANSITIONS=377} [2024-06-27 23:43:06,393 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 383 predicate places. [2024-06-27 23:43:06,393 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 377 transitions, 4574 flow [2024-06-27 23:43:06,393 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) [2024-06-27 23:43:06,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:06,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:06,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:43:06,394 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)] === [2024-06-27 23:43:06,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:06,395 INFO L85 PathProgramCache]: Analyzing trace with hash 98327429, now seen corresponding path program 14 times [2024-06-27 23:43:06,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:06,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129829684] [2024-06-27 23:43:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:06,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129829684] [2024-06-27 23:43:08,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129829684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:08,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264845981] [2024-06-27 23:43:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:08,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:08,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:08,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:08,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 377 transitions, 4574 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) [2024-06-27 23:43:08,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:08,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:08,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:09,544 INFO L124 PetriNetUnfolderBase]: 743/1277 cut-off events. [2024-06-27 23:43:09,544 INFO L125 PetriNetUnfolderBase]: For 473704/473704 co-relation queries the response was YES. [2024-06-27 23:43:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13654 conditions, 1277 events. 743/1277 cut-off events. For 473704/473704 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6241 event pairs, 64 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 13466. Up to 899 conditions per place. [2024-06-27 23:43:09,561 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 275 selfloop transitions, 115 changer transitions 0/392 dead transitions. [2024-06-27 23:43:09,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 392 transitions, 5962 flow [2024-06-27 23:43:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:43:09,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-27 23:43:09,562 INFO L175 Difference]: Start difference. First operand has 415 places, 377 transitions, 4574 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:43:09,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 392 transitions, 5962 flow [2024-06-27 23:43:10,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 392 transitions, 5669 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:10,966 INFO L231 Difference]: Finished difference. Result has 416 places, 377 transitions, 4516 flow [2024-06-27 23:43:10,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4281, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4516, PETRI_PLACES=416, PETRI_TRANSITIONS=377} [2024-06-27 23:43:10,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-27 23:43:10,967 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 377 transitions, 4516 flow [2024-06-27 23:43:10,967 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) [2024-06-27 23:43:10,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:10,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:43:10,967 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)] === [2024-06-27 23:43:10,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash 105686798, now seen corresponding path program 6 times [2024-06-27 23:43:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268941968] [2024-06-27 23:43:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:12,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:12,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268941968] [2024-06-27 23:43:12,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268941968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:12,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:12,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278558095] [2024-06-27 23:43:12,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:12,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:12,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:12,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:12,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 377 transitions, 4516 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) [2024-06-27 23:43:12,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:12,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:12,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:13,689 INFO L124 PetriNetUnfolderBase]: 739/1274 cut-off events. [2024-06-27 23:43:13,689 INFO L125 PetriNetUnfolderBase]: For 469692/469692 co-relation queries the response was YES. [2024-06-27 23:43:13,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13361 conditions, 1274 events. 739/1274 cut-off events. For 469692/469692 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6266 event pairs, 105 based on Foata normal form. 2/1276 useless extension candidates. Maximal degree in co-relation 13172. Up to 968 conditions per place. [2024-06-27 23:43:13,706 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 315 selfloop transitions, 78 changer transitions 0/395 dead transitions. [2024-06-27 23:43:13,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 395 transitions, 5640 flow [2024-06-27 23:43:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:13,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:13,708 INFO L175 Difference]: Start difference. First operand has 416 places, 377 transitions, 4516 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:13,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 395 transitions, 5640 flow [2024-06-27 23:43:15,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 395 transitions, 5373 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:43:15,134 INFO L231 Difference]: Finished difference. Result has 416 places, 377 transitions, 4410 flow [2024-06-27 23:43:15,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4249, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4410, PETRI_PLACES=416, PETRI_TRANSITIONS=377} [2024-06-27 23:43:15,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-27 23:43:15,134 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 377 transitions, 4410 flow [2024-06-27 23:43:15,134 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) [2024-06-27 23:43:15,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:15,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:15,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:43:15,135 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)] === [2024-06-27 23:43:15,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 105679079, now seen corresponding path program 15 times [2024-06-27 23:43:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:15,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89128888] [2024-06-27 23:43:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89128888] [2024-06-27 23:43:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89128888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:17,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:17,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302065875] [2024-06-27 23:43:17,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:17,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:17,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:17,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:17,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 377 transitions, 4410 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) [2024-06-27 23:43:17,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:17,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:17,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:18,193 INFO L124 PetriNetUnfolderBase]: 737/1268 cut-off events. [2024-06-27 23:43:18,193 INFO L125 PetriNetUnfolderBase]: For 455071/455071 co-relation queries the response was YES. [2024-06-27 23:43:18,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13170 conditions, 1268 events. 737/1268 cut-off events. For 455071/455071 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6204 event pairs, 63 based on Foata normal form. 1/1269 useless extension candidates. Maximal degree in co-relation 12980. Up to 891 conditions per place. [2024-06-27 23:43:18,210 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 269 selfloop transitions, 120 changer transitions 0/391 dead transitions. [2024-06-27 23:43:18,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 391 transitions, 5512 flow [2024-06-27 23:43:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:43:18,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-27 23:43:18,211 INFO L175 Difference]: Start difference. First operand has 416 places, 377 transitions, 4410 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:43:18,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 391 transitions, 5512 flow [2024-06-27 23:43:19,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 391 transitions, 5306 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 23:43:19,564 INFO L231 Difference]: Finished difference. Result has 415 places, 377 transitions, 4449 flow [2024-06-27 23:43:19,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4449, PETRI_PLACES=415, PETRI_TRANSITIONS=377} [2024-06-27 23:43:19,565 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 383 predicate places. [2024-06-27 23:43:19,565 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 377 transitions, 4449 flow [2024-06-27 23:43:19,565 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) [2024-06-27 23:43:19,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:19,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:19,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:43:19,565 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)] === [2024-06-27 23:43:19,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 458054552, now seen corresponding path program 20 times [2024-06-27 23:43:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144700450] [2024-06-27 23:43:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:21,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144700450] [2024-06-27 23:43:21,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144700450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:21,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:21,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950001040] [2024-06-27 23:43:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:21,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:21,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 377 transitions, 4449 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) [2024-06-27 23:43:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:22,625 INFO L124 PetriNetUnfolderBase]: 735/1265 cut-off events. [2024-06-27 23:43:22,626 INFO L125 PetriNetUnfolderBase]: For 450570/450570 co-relation queries the response was YES. [2024-06-27 23:43:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13096 conditions, 1265 events. 735/1265 cut-off events. For 450570/450570 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6189 event pairs, 66 based on Foata normal form. 1/1266 useless extension candidates. Maximal degree in co-relation 12905. Up to 873 conditions per place. [2024-06-27 23:43:22,643 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 247 selfloop transitions, 142 changer transitions 0/391 dead transitions. [2024-06-27 23:43:22,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 391 transitions, 5553 flow [2024-06-27 23:43:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:43:22,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:43:22,645 INFO L175 Difference]: Start difference. First operand has 415 places, 377 transitions, 4449 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:43:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 391 transitions, 5553 flow [2024-06-27 23:43:24,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 391 transitions, 5286 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:43:24,129 INFO L231 Difference]: Finished difference. Result has 414 places, 377 transitions, 4471 flow [2024-06-27 23:43:24,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4471, PETRI_PLACES=414, PETRI_TRANSITIONS=377} [2024-06-27 23:43:24,130 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 382 predicate places. [2024-06-27 23:43:24,130 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 377 transitions, 4471 flow [2024-06-27 23:43:24,130 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) [2024-06-27 23:43:24,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:24,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:43:24,130 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)] === [2024-06-27 23:43:24,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1927947318, now seen corresponding path program 21 times [2024-06-27 23:43:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142096802] [2024-06-27 23:43:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:25,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:25,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142096802] [2024-06-27 23:43:25,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142096802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:25,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166797146] [2024-06-27 23:43:25,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:25,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:25,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:25,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:25,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:25,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 377 transitions, 4471 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) [2024-06-27 23:43:25,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:25,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:25,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:26,337 INFO L124 PetriNetUnfolderBase]: 733/1264 cut-off events. [2024-06-27 23:43:26,337 INFO L125 PetriNetUnfolderBase]: For 445917/445917 co-relation queries the response was YES. [2024-06-27 23:43:26,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13004 conditions, 1264 events. 733/1264 cut-off events. For 445917/445917 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6220 event pairs, 198 based on Foata normal form. 1/1265 useless extension candidates. Maximal degree in co-relation 12813. Up to 1222 conditions per place. [2024-06-27 23:43:26,354 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 370 selfloop transitions, 18 changer transitions 0/390 dead transitions. [2024-06-27 23:43:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 390 transitions, 5283 flow [2024-06-27 23:43:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 23:43:26,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-06-27 23:43:26,355 INFO L175 Difference]: Start difference. First operand has 414 places, 377 transitions, 4471 flow. Second operand 10 states and 112 transitions. [2024-06-27 23:43:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 390 transitions, 5283 flow [2024-06-27 23:43:27,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 390 transitions, 4962 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:43:27,869 INFO L231 Difference]: Finished difference. Result has 413 places, 377 transitions, 4191 flow [2024-06-27 23:43:27,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4191, PETRI_PLACES=413, PETRI_TRANSITIONS=377} [2024-06-27 23:43:27,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 381 predicate places. [2024-06-27 23:43:27,870 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 377 transitions, 4191 flow [2024-06-27 23:43:27,870 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) [2024-06-27 23:43:27,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:27,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:27,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:43:27,870 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)] === [2024-06-27 23:43:27,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1928091468, now seen corresponding path program 22 times [2024-06-27 23:43:27,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821340745] [2024-06-27 23:43:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:29,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:29,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821340745] [2024-06-27 23:43:29,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821340745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:29,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:29,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117314504] [2024-06-27 23:43:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:29,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:29,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:29,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:29,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 377 transitions, 4191 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) [2024-06-27 23:43:29,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:29,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:29,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:30,148 INFO L124 PetriNetUnfolderBase]: 741/1277 cut-off events. [2024-06-27 23:43:30,148 INFO L125 PetriNetUnfolderBase]: For 462243/462243 co-relation queries the response was YES. [2024-06-27 23:43:30,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12997 conditions, 1277 events. 741/1277 cut-off events. For 462243/462243 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6293 event pairs, 200 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 12804. Up to 1100 conditions per place. [2024-06-27 23:43:30,162 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 331 selfloop transitions, 62 changer transitions 0/395 dead transitions. [2024-06-27 23:43:30,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 395 transitions, 5657 flow [2024-06-27 23:43:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:43:30,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:43:30,164 INFO L175 Difference]: Start difference. First operand has 413 places, 377 transitions, 4191 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:43:30,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 395 transitions, 5657 flow [2024-06-27 23:43:31,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 395 transitions, 5594 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:31,699 INFO L231 Difference]: Finished difference. Result has 414 places, 381 transitions, 4309 flow [2024-06-27 23:43:31,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4309, PETRI_PLACES=414, PETRI_TRANSITIONS=381} [2024-06-27 23:43:31,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 382 predicate places. [2024-06-27 23:43:31,699 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 381 transitions, 4309 flow [2024-06-27 23:43:31,699 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) [2024-06-27 23:43:31,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:31,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:31,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:43:31,700 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)] === [2024-06-27 23:43:31,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1880384659, now seen corresponding path program 16 times [2024-06-27 23:43:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012650985] [2024-06-27 23:43:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:33,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012650985] [2024-06-27 23:43:33,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012650985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:33,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:33,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604920204] [2024-06-27 23:43:33,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:33,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:33,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:33,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:33,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:33,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 381 transitions, 4309 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) [2024-06-27 23:43:33,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:33,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:33,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:33,716 INFO L124 PetriNetUnfolderBase]: 770/1324 cut-off events. [2024-06-27 23:43:33,716 INFO L125 PetriNetUnfolderBase]: For 535578/535578 co-relation queries the response was YES. [2024-06-27 23:43:33,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13911 conditions, 1324 events. 770/1324 cut-off events. For 535578/535578 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6535 event pairs, 206 based on Foata normal form. 3/1327 useless extension candidates. Maximal degree in co-relation 13717. Up to 1026 conditions per place. [2024-06-27 23:43:33,735 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 332 selfloop transitions, 73 changer transitions 0/407 dead transitions. [2024-06-27 23:43:33,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 407 transitions, 5843 flow [2024-06-27 23:43:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:43:33,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:43:33,736 INFO L175 Difference]: Start difference. First operand has 414 places, 381 transitions, 4309 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:43:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 407 transitions, 5843 flow [2024-06-27 23:43:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 407 transitions, 5520 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:35,129 INFO L231 Difference]: Finished difference. Result has 416 places, 388 transitions, 4250 flow [2024-06-27 23:43:35,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4250, PETRI_PLACES=416, PETRI_TRANSITIONS=388} [2024-06-27 23:43:35,130 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-27 23:43:35,130 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 388 transitions, 4250 flow [2024-06-27 23:43:35,130 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) [2024-06-27 23:43:35,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:35,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:35,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:43:35,130 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)] === [2024-06-27 23:43:35,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1880384442, now seen corresponding path program 23 times [2024-06-27 23:43:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131204552] [2024-06-27 23:43:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:36,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:36,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131204552] [2024-06-27 23:43:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131204552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:36,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:36,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407910786] [2024-06-27 23:43:36,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:36,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:36,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:36,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:36,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 388 transitions, 4250 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) [2024-06-27 23:43:36,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:36,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:36,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:37,232 INFO L124 PetriNetUnfolderBase]: 768/1321 cut-off events. [2024-06-27 23:43:37,232 INFO L125 PetriNetUnfolderBase]: For 508532/508532 co-relation queries the response was YES. [2024-06-27 23:43:37,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13864 conditions, 1321 events. 768/1321 cut-off events. For 508532/508532 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6554 event pairs, 205 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 13668. Up to 1145 conditions per place. [2024-06-27 23:43:37,251 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 63 changer transitions 0/401 dead transitions. [2024-06-27 23:43:37,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 401 transitions, 5382 flow [2024-06-27 23:43:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:37,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:43:37,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:43:37,252 INFO L175 Difference]: Start difference. First operand has 416 places, 388 transitions, 4250 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:43:37,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 401 transitions, 5382 flow [2024-06-27 23:43:38,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 401 transitions, 5319 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 23:43:38,950 INFO L231 Difference]: Finished difference. Result has 421 places, 388 transitions, 4318 flow [2024-06-27 23:43:38,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4187, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4318, PETRI_PLACES=421, PETRI_TRANSITIONS=388} [2024-06-27 23:43:38,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 389 predicate places. [2024-06-27 23:43:38,951 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 388 transitions, 4318 flow [2024-06-27 23:43:38,951 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) [2024-06-27 23:43:38,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:38,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:43:38,952 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)] === [2024-06-27 23:43:38,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash -138738798, now seen corresponding path program 24 times [2024-06-27 23:43:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:38,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331122547] [2024-06-27 23:43:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:38,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:40,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331122547] [2024-06-27 23:43:40,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331122547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:40,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:40,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:40,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356396905] [2024-06-27 23:43:40,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:40,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:40,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:40,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 388 transitions, 4318 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) [2024-06-27 23:43:40,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:40,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:40,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:41,073 INFO L124 PetriNetUnfolderBase]: 776/1334 cut-off events. [2024-06-27 23:43:41,074 INFO L125 PetriNetUnfolderBase]: For 526675/526675 co-relation queries the response was YES. [2024-06-27 23:43:41,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14229 conditions, 1334 events. 776/1334 cut-off events. For 526675/526675 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6632 event pairs, 205 based on Foata normal form. 1/1335 useless extension candidates. Maximal degree in co-relation 14031. Up to 1155 conditions per place. [2024-06-27 23:43:41,089 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 343 selfloop transitions, 60 changer transitions 0/405 dead transitions. [2024-06-27 23:43:41,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 405 transitions, 5812 flow [2024-06-27 23:43:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:43:41,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:43:41,090 INFO L175 Difference]: Start difference. First operand has 421 places, 388 transitions, 4318 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:43:41,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 405 transitions, 5812 flow [2024-06-27 23:43:42,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 405 transitions, 5673 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:42,684 INFO L231 Difference]: Finished difference. Result has 422 places, 392 transitions, 4356 flow [2024-06-27 23:43:42,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4187, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4356, PETRI_PLACES=422, PETRI_TRANSITIONS=392} [2024-06-27 23:43:42,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 390 predicate places. [2024-06-27 23:43:42,684 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 392 transitions, 4356 flow [2024-06-27 23:43:42,685 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) [2024-06-27 23:43:42,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:42,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:42,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:43:42,685 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)] === [2024-06-27 23:43:42,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash 719546666, now seen corresponding path program 25 times [2024-06-27 23:43:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141824854] [2024-06-27 23:43:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:44,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:44,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141824854] [2024-06-27 23:43:44,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141824854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:44,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:44,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948955327] [2024-06-27 23:43:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:44,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:44,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:44,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:44,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:44,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 392 transitions, 4356 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) [2024-06-27 23:43:44,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:44,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:44,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:44,734 INFO L124 PetriNetUnfolderBase]: 779/1339 cut-off events. [2024-06-27 23:43:44,734 INFO L125 PetriNetUnfolderBase]: For 533618/533618 co-relation queries the response was YES. [2024-06-27 23:43:44,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14292 conditions, 1339 events. 779/1339 cut-off events. For 533618/533618 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6664 event pairs, 205 based on Foata normal form. 1/1340 useless extension candidates. Maximal degree in co-relation 14093. Up to 1159 conditions per place. [2024-06-27 23:43:44,753 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 344 selfloop transitions, 61 changer transitions 0/407 dead transitions. [2024-06-27 23:43:44,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 407 transitions, 5832 flow [2024-06-27 23:43:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:43:44,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:43:44,754 INFO L175 Difference]: Start difference. First operand has 422 places, 392 transitions, 4356 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:43:44,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 407 transitions, 5832 flow [2024-06-27 23:43:46,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 407 transitions, 5722 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:43:46,283 INFO L231 Difference]: Finished difference. Result has 426 places, 394 transitions, 4399 flow [2024-06-27 23:43:46,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4399, PETRI_PLACES=426, PETRI_TRANSITIONS=394} [2024-06-27 23:43:46,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 394 predicate places. [2024-06-27 23:43:46,284 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 394 transitions, 4399 flow [2024-06-27 23:43:46,284 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) [2024-06-27 23:43:46,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:46,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:46,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:43:46,284 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)] === [2024-06-27 23:43:46,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -138733001, now seen corresponding path program 17 times [2024-06-27 23:43:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:46,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074052201] [2024-06-27 23:43:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:47,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:47,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074052201] [2024-06-27 23:43:47,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074052201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:47,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:47,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929735338] [2024-06-27 23:43:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:47,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:47,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:47,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:47,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:47,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 394 transitions, 4399 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) [2024-06-27 23:43:47,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:47,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:48,399 INFO L124 PetriNetUnfolderBase]: 813/1394 cut-off events. [2024-06-27 23:43:48,399 INFO L125 PetriNetUnfolderBase]: For 623252/623252 co-relation queries the response was YES. [2024-06-27 23:43:48,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15359 conditions, 1394 events. 813/1394 cut-off events. For 623252/623252 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6979 event pairs, 209 based on Foata normal form. 3/1397 useless extension candidates. Maximal degree in co-relation 15159. Up to 1064 conditions per place. [2024-06-27 23:43:48,418 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 358 selfloop transitions, 64 changer transitions 0/424 dead transitions. [2024-06-27 23:43:48,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 424 transitions, 6327 flow [2024-06-27 23:43:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:43:48,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:43:48,419 INFO L175 Difference]: Start difference. First operand has 426 places, 394 transitions, 4399 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:43:48,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 424 transitions, 6327 flow [2024-06-27 23:43:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 424 transitions, 6210 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:50,376 INFO L231 Difference]: Finished difference. Result has 430 places, 402 transitions, 4518 flow [2024-06-27 23:43:50,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4518, PETRI_PLACES=430, PETRI_TRANSITIONS=402} [2024-06-27 23:43:50,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-27 23:43:50,377 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 402 transitions, 4518 flow [2024-06-27 23:43:50,377 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) [2024-06-27 23:43:50,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:50,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:50,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:43:50,377 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)] === [2024-06-27 23:43:50,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -138531191, now seen corresponding path program 18 times [2024-06-27 23:43:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964818161] [2024-06-27 23:43:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:50,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:51,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964818161] [2024-06-27 23:43:51,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964818161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:51,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:51,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45908677] [2024-06-27 23:43:51,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:51,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:51,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:52,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:52,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 402 transitions, 4518 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) [2024-06-27 23:43:52,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:52,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:52,549 INFO L124 PetriNetUnfolderBase]: 822/1409 cut-off events. [2024-06-27 23:43:52,550 INFO L125 PetriNetUnfolderBase]: For 631456/631456 co-relation queries the response was YES. [2024-06-27 23:43:52,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15558 conditions, 1409 events. 822/1409 cut-off events. For 631456/631456 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7085 event pairs, 207 based on Foata normal form. 3/1412 useless extension candidates. Maximal degree in co-relation 15356. Up to 1072 conditions per place. [2024-06-27 23:43:52,569 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 357 selfloop transitions, 68 changer transitions 0/427 dead transitions. [2024-06-27 23:43:52,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 427 transitions, 6406 flow [2024-06-27 23:43:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:43:52,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:43:52,571 INFO L175 Difference]: Start difference. First operand has 430 places, 402 transitions, 4518 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:43:52,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 427 transitions, 6406 flow [2024-06-27 23:43:54,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 427 transitions, 6319 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:43:54,477 INFO L231 Difference]: Finished difference. Result has 435 places, 405 transitions, 4609 flow [2024-06-27 23:43:54,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4609, PETRI_PLACES=435, PETRI_TRANSITIONS=405} [2024-06-27 23:43:54,477 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 403 predicate places. [2024-06-27 23:43:54,477 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 405 transitions, 4609 flow [2024-06-27 23:43:54,477 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) [2024-06-27 23:43:54,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:54,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:43:54,478 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)] === [2024-06-27 23:43:54,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -138523472, now seen corresponding path program 7 times [2024-06-27 23:43:54,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575580085] [2024-06-27 23:43:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575580085] [2024-06-27 23:43:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575580085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340973307] [2024-06-27 23:43:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:56,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:56,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:43:56,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 405 transitions, 4609 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) [2024-06-27 23:43:56,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:56,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:43:56,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:56,826 INFO L124 PetriNetUnfolderBase]: 818/1403 cut-off events. [2024-06-27 23:43:56,826 INFO L125 PetriNetUnfolderBase]: For 603566/603566 co-relation queries the response was YES. [2024-06-27 23:43:56,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15308 conditions, 1403 events. 818/1403 cut-off events. For 603566/603566 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7028 event pairs, 203 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 15105. Up to 1193 conditions per place. [2024-06-27 23:43:56,845 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 358 selfloop transitions, 60 changer transitions 0/420 dead transitions. [2024-06-27 23:43:56,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 420 transitions, 5797 flow [2024-06-27 23:43:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:43:56,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:43:56,846 INFO L175 Difference]: Start difference. First operand has 435 places, 405 transitions, 4609 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:43:56,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 420 transitions, 5797 flow [2024-06-27 23:43:58,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 420 transitions, 5651 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:58,924 INFO L231 Difference]: Finished difference. Result has 439 places, 405 transitions, 4588 flow [2024-06-27 23:43:58,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4588, PETRI_PLACES=439, PETRI_TRANSITIONS=405} [2024-06-27 23:43:58,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 407 predicate places. [2024-06-27 23:43:58,925 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 405 transitions, 4588 flow [2024-06-27 23:43:58,925 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) [2024-06-27 23:43:58,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:58,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:43:58,926 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)] === [2024-06-27 23:43:58,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -138531408, now seen corresponding path program 26 times [2024-06-27 23:43:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327951886] [2024-06-27 23:43:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:00,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327951886] [2024-06-27 23:44:00,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327951886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:00,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:00,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307024454] [2024-06-27 23:44:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:00,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:00,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:00,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 405 transitions, 4588 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) [2024-06-27 23:44:00,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:00,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:00,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:00,929 INFO L124 PetriNetUnfolderBase]: 816/1400 cut-off events. [2024-06-27 23:44:00,929 INFO L125 PetriNetUnfolderBase]: For 587303/587303 co-relation queries the response was YES. [2024-06-27 23:44:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15141 conditions, 1400 events. 816/1400 cut-off events. For 587303/587303 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7025 event pairs, 207 based on Foata normal form. 1/1401 useless extension candidates. Maximal degree in co-relation 14937. Up to 1221 conditions per place. [2024-06-27 23:44:00,949 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 64 changer transitions 0/417 dead transitions. [2024-06-27 23:44:00,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 417 transitions, 5760 flow [2024-06-27 23:44:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:00,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:44:00,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:44:00,951 INFO L175 Difference]: Start difference. First operand has 439 places, 405 transitions, 4588 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:44:00,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 417 transitions, 5760 flow [2024-06-27 23:44:02,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 417 transitions, 5518 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 23:44:02,847 INFO L231 Difference]: Finished difference. Result has 436 places, 405 transitions, 4479 flow [2024-06-27 23:44:02,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4346, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4479, PETRI_PLACES=436, PETRI_TRANSITIONS=405} [2024-06-27 23:44:02,847 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-27 23:44:02,848 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 405 transitions, 4479 flow [2024-06-27 23:44:02,848 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) [2024-06-27 23:44:02,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:02,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:02,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:44:02,848 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)] === [2024-06-27 23:44:02,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash -138523751, now seen corresponding path program 19 times [2024-06-27 23:44:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:02,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631359] [2024-06-27 23:44:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:04,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:04,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631359] [2024-06-27 23:44:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:04,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:04,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:04,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979775581] [2024-06-27 23:44:04,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:04,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:04,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:04,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 405 transitions, 4479 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) [2024-06-27 23:44:04,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:04,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:04,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:04,892 INFO L124 PetriNetUnfolderBase]: 810/1391 cut-off events. [2024-06-27 23:44:04,892 INFO L125 PetriNetUnfolderBase]: For 581480/581480 co-relation queries the response was YES. [2024-06-27 23:44:04,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14596 conditions, 1391 events. 810/1391 cut-off events. For 581480/581480 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6955 event pairs, 209 based on Foata normal form. 3/1394 useless extension candidates. Maximal degree in co-relation 14393. Up to 1064 conditions per place. [2024-06-27 23:44:04,911 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 351 selfloop transitions, 70 changer transitions 0/423 dead transitions. [2024-06-27 23:44:04,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 423 transitions, 5697 flow [2024-06-27 23:44:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:44:04,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:44:04,912 INFO L175 Difference]: Start difference. First operand has 436 places, 405 transitions, 4479 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:44:04,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 423 transitions, 5697 flow [2024-06-27 23:44:06,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 423 transitions, 5549 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:06,708 INFO L231 Difference]: Finished difference. Result has 436 places, 405 transitions, 4478 flow [2024-06-27 23:44:06,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4478, PETRI_PLACES=436, PETRI_TRANSITIONS=405} [2024-06-27 23:44:06,708 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 404 predicate places. [2024-06-27 23:44:06,709 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 405 transitions, 4478 flow [2024-06-27 23:44:06,709 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) [2024-06-27 23:44:06,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:06,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:06,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:44:06,709 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)] === [2024-06-27 23:44:06,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash 921105132, now seen corresponding path program 8 times [2024-06-27 23:44:06,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:06,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615929099] [2024-06-27 23:44:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:08,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615929099] [2024-06-27 23:44:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615929099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209539613] [2024-06-27 23:44:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:08,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:08,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:08,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:08,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 405 transitions, 4478 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) [2024-06-27 23:44:08,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:08,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:08,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:09,095 INFO L124 PetriNetUnfolderBase]: 836/1433 cut-off events. [2024-06-27 23:44:09,095 INFO L125 PetriNetUnfolderBase]: For 626839/626839 co-relation queries the response was YES. [2024-06-27 23:44:09,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15554 conditions, 1433 events. 836/1433 cut-off events. For 626839/626839 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7215 event pairs, 208 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 15350. Up to 1205 conditions per place. [2024-06-27 23:44:09,116 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 367 selfloop transitions, 59 changer transitions 0/428 dead transitions. [2024-06-27 23:44:09,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 428 transitions, 6411 flow [2024-06-27 23:44:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:44:09,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-27 23:44:09,118 INFO L175 Difference]: Start difference. First operand has 436 places, 405 transitions, 4478 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:44:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 428 transitions, 6411 flow [2024-06-27 23:44:11,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 428 transitions, 6258 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:11,353 INFO L231 Difference]: Finished difference. Result has 438 places, 411 transitions, 4535 flow [2024-06-27 23:44:11,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4535, PETRI_PLACES=438, PETRI_TRANSITIONS=411} [2024-06-27 23:44:11,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-27 23:44:11,354 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 411 transitions, 4535 flow [2024-06-27 23:44:11,354 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) [2024-06-27 23:44:11,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:11,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:11,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:44:11,354 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)] === [2024-06-27 23:44:11,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:11,355 INFO L85 PathProgramCache]: Analyzing trace with hash 920837943, now seen corresponding path program 20 times [2024-06-27 23:44:11,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:11,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380244449] [2024-06-27 23:44:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:11,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:12,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380244449] [2024-06-27 23:44:12,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380244449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:12,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:12,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669443024] [2024-06-27 23:44:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:13,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:13,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:13,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:13,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:13,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 411 transitions, 4535 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) [2024-06-27 23:44:13,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:13,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:13,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:13,633 INFO L124 PetriNetUnfolderBase]: 885/1512 cut-off events. [2024-06-27 23:44:13,633 INFO L125 PetriNetUnfolderBase]: For 748602/748602 co-relation queries the response was YES. [2024-06-27 23:44:13,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17214 conditions, 1512 events. 885/1512 cut-off events. For 748602/748602 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7666 event pairs, 217 based on Foata normal form. 3/1515 useless extension candidates. Maximal degree in co-relation 17009. Up to 1107 conditions per place. [2024-06-27 23:44:13,655 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 365 selfloop transitions, 77 changer transitions 0/444 dead transitions. [2024-06-27 23:44:13,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 444 transitions, 6897 flow [2024-06-27 23:44:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:44:13,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:44:13,657 INFO L175 Difference]: Start difference. First operand has 438 places, 411 transitions, 4535 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:44:13,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 444 transitions, 6897 flow [2024-06-27 23:44:16,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 444 transitions, 6802 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:44:16,025 INFO L231 Difference]: Finished difference. Result has 443 places, 422 transitions, 4744 flow [2024-06-27 23:44:16,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4446, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4744, PETRI_PLACES=443, PETRI_TRANSITIONS=422} [2024-06-27 23:44:16,025 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 411 predicate places. [2024-06-27 23:44:16,026 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 422 transitions, 4744 flow [2024-06-27 23:44:16,026 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) [2024-06-27 23:44:16,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:16,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:16,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:44:16,026 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)] === [2024-06-27 23:44:16,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash 913687886, now seen corresponding path program 27 times [2024-06-27 23:44:16,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:16,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471595125] [2024-06-27 23:44:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:17,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471595125] [2024-06-27 23:44:17,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471595125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:17,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:17,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:17,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450646817] [2024-06-27 23:44:17,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:17,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:17,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:17,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 422 transitions, 4744 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) [2024-06-27 23:44:17,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:17,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:17,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:18,147 INFO L124 PetriNetUnfolderBase]: 898/1533 cut-off events. [2024-06-27 23:44:18,147 INFO L125 PetriNetUnfolderBase]: For 758301/758301 co-relation queries the response was YES. [2024-06-27 23:44:18,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17766 conditions, 1533 events. 898/1533 cut-off events. For 758301/758301 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7810 event pairs, 219 based on Foata normal form. 1/1534 useless extension candidates. Maximal degree in co-relation 17559. Up to 1349 conditions per place. [2024-06-27 23:44:18,170 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 375 selfloop transitions, 64 changer transitions 0/441 dead transitions. [2024-06-27 23:44:18,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 441 transitions, 6684 flow [2024-06-27 23:44:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:18,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:44:18,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:44:18,172 INFO L175 Difference]: Start difference. First operand has 443 places, 422 transitions, 4744 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:44:18,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 441 transitions, 6684 flow [2024-06-27 23:44:20,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 441 transitions, 6589 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 23:44:20,876 INFO L231 Difference]: Finished difference. Result has 449 places, 428 transitions, 4854 flow [2024-06-27 23:44:20,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4854, PETRI_PLACES=449, PETRI_TRANSITIONS=428} [2024-06-27 23:44:20,877 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 417 predicate places. [2024-06-27 23:44:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 428 transitions, 4854 flow [2024-06-27 23:44:20,877 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) [2024-06-27 23:44:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:44:20,877 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)] === [2024-06-27 23:44:20,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 913486293, now seen corresponding path program 21 times [2024-06-27 23:44:20,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870965872] [2024-06-27 23:44:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:22,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:22,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870965872] [2024-06-27 23:44:22,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870965872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:22,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:22,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:22,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89097420] [2024-06-27 23:44:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:22,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:22,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:22,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:22,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:22,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:22,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 428 transitions, 4854 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) [2024-06-27 23:44:22,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:22,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:22,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:23,075 INFO L124 PetriNetUnfolderBase]: 907/1548 cut-off events. [2024-06-27 23:44:23,075 INFO L125 PetriNetUnfolderBase]: For 794254/794254 co-relation queries the response was YES. [2024-06-27 23:44:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17844 conditions, 1548 events. 907/1548 cut-off events. For 794254/794254 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7894 event pairs, 215 based on Foata normal form. 3/1551 useless extension candidates. Maximal degree in co-relation 17636. Up to 1136 conditions per place. [2024-06-27 23:44:23,101 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 370 selfloop transitions, 80 changer transitions 0/452 dead transitions. [2024-06-27 23:44:23,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 452 transitions, 6826 flow [2024-06-27 23:44:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:44:23,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:44:23,103 INFO L175 Difference]: Start difference. First operand has 449 places, 428 transitions, 4854 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:44:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 452 transitions, 6826 flow [2024-06-27 23:44:25,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 452 transitions, 6717 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:44:25,711 INFO L231 Difference]: Finished difference. Result has 454 places, 431 transitions, 4943 flow [2024-06-27 23:44:25,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4943, PETRI_PLACES=454, PETRI_TRANSITIONS=431} [2024-06-27 23:44:25,711 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 422 predicate places. [2024-06-27 23:44:25,711 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 431 transitions, 4943 flow [2024-06-27 23:44:25,712 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) [2024-06-27 23:44:25,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:25,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:25,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:44:25,712 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)] === [2024-06-27 23:44:25,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1210854253, now seen corresponding path program 22 times [2024-06-27 23:44:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:25,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451960491] [2024-06-27 23:44:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:27,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451960491] [2024-06-27 23:44:27,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451960491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:27,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:27,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628415357] [2024-06-27 23:44:27,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:27,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:27,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:27,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 431 transitions, 4943 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) [2024-06-27 23:44:27,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:27,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:27,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:27,813 INFO L124 PetriNetUnfolderBase]: 918/1567 cut-off events. [2024-06-27 23:44:27,813 INFO L125 PetriNetUnfolderBase]: For 804854/804854 co-relation queries the response was YES. [2024-06-27 23:44:27,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18068 conditions, 1567 events. 918/1567 cut-off events. For 804854/804854 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8021 event pairs, 215 based on Foata normal form. 3/1570 useless extension candidates. Maximal degree in co-relation 17859. Up to 1147 conditions per place. [2024-06-27 23:44:27,834 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 363 selfloop transitions, 88 changer transitions 0/453 dead transitions. [2024-06-27 23:44:27,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 453 transitions, 6917 flow [2024-06-27 23:44:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:44:27,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 23:44:27,835 INFO L175 Difference]: Start difference. First operand has 454 places, 431 transitions, 4943 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:44:27,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 453 transitions, 6917 flow [2024-06-27 23:44:30,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 453 transitions, 6791 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:44:30,787 INFO L231 Difference]: Finished difference. Result has 458 places, 434 transitions, 5039 flow [2024-06-27 23:44:30,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5039, PETRI_PLACES=458, PETRI_TRANSITIONS=434} [2024-06-27 23:44:30,787 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 426 predicate places. [2024-06-27 23:44:30,787 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 434 transitions, 5039 flow [2024-06-27 23:44:30,787 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) [2024-06-27 23:44:30,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:30,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:30,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:44:30,788 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)] === [2024-06-27 23:44:30,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:30,788 INFO L85 PathProgramCache]: Analyzing trace with hash -878882398, now seen corresponding path program 9 times [2024-06-27 23:44:30,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:30,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735002675] [2024-06-27 23:44:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:30,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:32,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735002675] [2024-06-27 23:44:32,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735002675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:32,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:32,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:32,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305118719] [2024-06-27 23:44:32,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:32,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:32,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:32,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:32,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:32,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:32,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 434 transitions, 5039 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) [2024-06-27 23:44:32,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:32,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:32,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:33,321 INFO L124 PetriNetUnfolderBase]: 912/1557 cut-off events. [2024-06-27 23:44:33,322 INFO L125 PetriNetUnfolderBase]: For 775242/775242 co-relation queries the response was YES. [2024-06-27 23:44:33,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17788 conditions, 1557 events. 912/1557 cut-off events. For 775242/775242 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7961 event pairs, 212 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 17578. Up to 1325 conditions per place. [2024-06-27 23:44:33,346 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 383 selfloop transitions, 64 changer transitions 0/449 dead transitions. [2024-06-27 23:44:33,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 449 transitions, 6625 flow [2024-06-27 23:44:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:44:33,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:44:33,348 INFO L175 Difference]: Start difference. First operand has 458 places, 434 transitions, 5039 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:44:33,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 449 transitions, 6625 flow [2024-06-27 23:44:36,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 449 transitions, 6473 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:36,144 INFO L231 Difference]: Finished difference. Result has 461 places, 434 transitions, 5020 flow [2024-06-27 23:44:36,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4887, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=461, PETRI_TRANSITIONS=434} [2024-06-27 23:44:36,145 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 429 predicate places. [2024-06-27 23:44:36,145 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 434 transitions, 5020 flow [2024-06-27 23:44:36,145 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) [2024-06-27 23:44:36,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:36,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:44:36,145 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)] === [2024-06-27 23:44:36,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash -886301287, now seen corresponding path program 23 times [2024-06-27 23:44:36,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367949811] [2024-06-27 23:44:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:36,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:37,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367949811] [2024-06-27 23:44:37,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367949811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479510445] [2024-06-27 23:44:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:37,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:37,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:37,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 434 transitions, 5020 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) [2024-06-27 23:44:37,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:37,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:37,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:38,274 INFO L124 PetriNetUnfolderBase]: 915/1562 cut-off events. [2024-06-27 23:44:38,274 INFO L125 PetriNetUnfolderBase]: For 770077/770077 co-relation queries the response was YES. [2024-06-27 23:44:38,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17802 conditions, 1562 events. 915/1562 cut-off events. For 770077/770077 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8007 event pairs, 227 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 17591. Up to 1342 conditions per place. [2024-06-27 23:44:38,298 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 384 selfloop transitions, 66 changer transitions 0/452 dead transitions. [2024-06-27 23:44:38,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 452 transitions, 6978 flow [2024-06-27 23:44:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:44:38,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:44:38,299 INFO L175 Difference]: Start difference. First operand has 461 places, 434 transitions, 5020 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:44:38,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 452 transitions, 6978 flow [2024-06-27 23:44:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 452 transitions, 6854 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:41,392 INFO L231 Difference]: Finished difference. Result has 463 places, 439 transitions, 5077 flow [2024-06-27 23:44:41,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5077, PETRI_PLACES=463, PETRI_TRANSITIONS=439} [2024-06-27 23:44:41,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 431 predicate places. [2024-06-27 23:44:41,393 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 439 transitions, 5077 flow [2024-06-27 23:44:41,393 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) [2024-06-27 23:44:41,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:41,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:41,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:44:41,393 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)] === [2024-06-27 23:44:41,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash 913695822, now seen corresponding path program 10 times [2024-06-27 23:44:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559025456] [2024-06-27 23:44:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:43,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559025456] [2024-06-27 23:44:43,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559025456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:43,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:43,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:43,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822444289] [2024-06-27 23:44:43,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:43,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:43,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:43,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 439 transitions, 5077 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) [2024-06-27 23:44:43,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:43,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:43,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:43,748 INFO L124 PetriNetUnfolderBase]: 911/1556 cut-off events. [2024-06-27 23:44:43,749 INFO L125 PetriNetUnfolderBase]: For 766842/766842 co-relation queries the response was YES. [2024-06-27 23:44:43,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17485 conditions, 1556 events. 911/1556 cut-off events. For 766842/766842 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7982 event pairs, 209 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 17273. Up to 1327 conditions per place. [2024-06-27 23:44:43,772 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 395 selfloop transitions, 58 changer transitions 0/455 dead transitions. [2024-06-27 23:44:43,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 455 transitions, 6687 flow [2024-06-27 23:44:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 23:44:43,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-27 23:44:43,773 INFO L175 Difference]: Start difference. First operand has 463 places, 439 transitions, 5077 flow. Second operand 11 states and 137 transitions. [2024-06-27 23:44:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 455 transitions, 6687 flow [2024-06-27 23:44:46,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 455 transitions, 6567 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 23:44:46,759 INFO L231 Difference]: Finished difference. Result has 469 places, 439 transitions, 5078 flow [2024-06-27 23:44:46,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4957, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5078, PETRI_PLACES=469, PETRI_TRANSITIONS=439} [2024-06-27 23:44:46,760 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 437 predicate places. [2024-06-27 23:44:46,760 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 439 transitions, 5078 flow [2024-06-27 23:44:46,760 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) [2024-06-27 23:44:46,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:46,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:46,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:44:46,761 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)] === [2024-06-27 23:44:46,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:46,762 INFO L85 PathProgramCache]: Analyzing trace with hash 913688103, now seen corresponding path program 24 times [2024-06-27 23:44:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:46,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009360512] [2024-06-27 23:44:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009360512] [2024-06-27 23:44:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009360512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:48,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767729911] [2024-06-27 23:44:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:48,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:48,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:48,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:48,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 439 transitions, 5078 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) [2024-06-27 23:44:48,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:48,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:48,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:48,986 INFO L124 PetriNetUnfolderBase]: 915/1563 cut-off events. [2024-06-27 23:44:48,986 INFO L125 PetriNetUnfolderBase]: For 775715/775715 co-relation queries the response was YES. [2024-06-27 23:44:49,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 1563 events. 915/1563 cut-off events. For 775715/775715 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8018 event pairs, 212 based on Foata normal form. 3/1566 useless extension candidates. Maximal degree in co-relation 17202. Up to 1149 conditions per place. [2024-06-27 23:44:49,010 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 379 selfloop transitions, 80 changer transitions 0/461 dead transitions. [2024-06-27 23:44:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 461 transitions, 7076 flow [2024-06-27 23:44:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 23:44:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:44:49,011 INFO L175 Difference]: Start difference. First operand has 469 places, 439 transitions, 5078 flow. Second operand 10 states and 142 transitions. [2024-06-27 23:44:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 461 transitions, 7076 flow [2024-06-27 23:44:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 461 transitions, 6925 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:51,828 INFO L231 Difference]: Finished difference. Result has 468 places, 441 transitions, 5115 flow [2024-06-27 23:44:51,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4927, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5115, PETRI_PLACES=468, PETRI_TRANSITIONS=441} [2024-06-27 23:44:51,828 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-27 23:44:51,828 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 441 transitions, 5115 flow [2024-06-27 23:44:51,828 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) [2024-06-27 23:44:51,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:51,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:51,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:44:51,829 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)] === [2024-06-27 23:44:51,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 920845662, now seen corresponding path program 11 times [2024-06-27 23:44:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:51,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180078712] [2024-06-27 23:44:51,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:53,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180078712] [2024-06-27 23:44:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180078712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:53,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:53,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590818148] [2024-06-27 23:44:53,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:53,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:53,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:53,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 441 transitions, 5115 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) [2024-06-27 23:44:53,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:53,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:53,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:54,225 INFO L124 PetriNetUnfolderBase]: 911/1557 cut-off events. [2024-06-27 23:44:54,225 INFO L125 PetriNetUnfolderBase]: For 744187/744187 co-relation queries the response was YES. [2024-06-27 23:44:54,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17122 conditions, 1557 events. 911/1557 cut-off events. For 744187/744187 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7998 event pairs, 210 based on Foata normal form. 2/1559 useless extension candidates. Maximal degree in co-relation 16909. Up to 1331 conditions per place. [2024-06-27 23:44:54,249 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 395 selfloop transitions, 59 changer transitions 0/456 dead transitions. [2024-06-27 23:44:54,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 6399 flow [2024-06-27 23:44:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 23:44:54,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-27 23:44:54,250 INFO L175 Difference]: Start difference. First operand has 468 places, 441 transitions, 5115 flow. Second operand 11 states and 135 transitions. [2024-06-27 23:44:54,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 6399 flow [2024-06-27 23:44:56,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 456 transitions, 6174 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:56,842 INFO L231 Difference]: Finished difference. Result has 470 places, 441 transitions, 5013 flow [2024-06-27 23:44:56,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4890, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5013, PETRI_PLACES=470, PETRI_TRANSITIONS=441} [2024-06-27 23:44:56,842 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 438 predicate places. [2024-06-27 23:44:56,843 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 441 transitions, 5013 flow [2024-06-27 23:44:56,843 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) [2024-06-27 23:44:56,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:56,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:56,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:44:56,843 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)] === [2024-06-27 23:44:56,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:56,844 INFO L85 PathProgramCache]: Analyzing trace with hash -886510754, now seen corresponding path program 28 times [2024-06-27 23:44:56,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:56,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239979075] [2024-06-27 23:44:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:56,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:58,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239979075] [2024-06-27 23:44:58,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239979075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:58,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:58,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:58,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729187268] [2024-06-27 23:44:58,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:58,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:58,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:58,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:58,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:44:58,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 441 transitions, 5013 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) [2024-06-27 23:44:58,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:58,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:44:58,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:59,054 INFO L124 PetriNetUnfolderBase]: 914/1562 cut-off events. [2024-06-27 23:44:59,054 INFO L125 PetriNetUnfolderBase]: For 737789/737789 co-relation queries the response was YES. [2024-06-27 23:44:59,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 1562 events. 914/1562 cut-off events. For 737789/737789 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8029 event pairs, 214 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 16888. Up to 1377 conditions per place. [2024-06-27 23:44:59,077 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 387 selfloop transitions, 67 changer transitions 0/456 dead transitions. [2024-06-27 23:44:59,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 456 transitions, 6979 flow [2024-06-27 23:44:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:44:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:44:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:44:59,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:44:59,079 INFO L175 Difference]: Start difference. First operand has 470 places, 441 transitions, 5013 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:44:59,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 456 transitions, 6979 flow [2024-06-27 23:45:01,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 456 transitions, 6836 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:01,802 INFO L231 Difference]: Finished difference. Result has 469 places, 443 transitions, 5029 flow [2024-06-27 23:45:01,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4870, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5029, PETRI_PLACES=469, PETRI_TRANSITIONS=443} [2024-06-27 23:45:01,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 437 predicate places. [2024-06-27 23:45:01,802 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 443 transitions, 5029 flow [2024-06-27 23:45:01,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:01,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:01,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:01,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:45:01,803 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)] === [2024-06-27 23:45:01,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:01,803 INFO L85 PathProgramCache]: Analyzing trace with hash 913480496, now seen corresponding path program 29 times [2024-06-27 23:45:01,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:01,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724803813] [2024-06-27 23:45:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:03,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724803813] [2024-06-27 23:45:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724803813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:03,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:03,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866193740] [2024-06-27 23:45:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:03,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:03,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 443 transitions, 5029 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) [2024-06-27 23:45:03,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:03,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:03,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:03,945 INFO L124 PetriNetUnfolderBase]: 912/1559 cut-off events. [2024-06-27 23:45:03,945 INFO L125 PetriNetUnfolderBase]: For 731634/731634 co-relation queries the response was YES. [2024-06-27 23:45:03,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16961 conditions, 1559 events. 912/1559 cut-off events. For 731634/731634 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7992 event pairs, 215 based on Foata normal form. 1/1560 useless extension candidates. Maximal degree in co-relation 16746. Up to 1375 conditions per place. [2024-06-27 23:45:03,969 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 384 selfloop transitions, 69 changer transitions 0/455 dead transitions. [2024-06-27 23:45:03,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 455 transitions, 6639 flow [2024-06-27 23:45:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 23:45:03,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:45:03,970 INFO L175 Difference]: Start difference. First operand has 469 places, 443 transitions, 5029 flow. Second operand 10 states and 125 transitions. [2024-06-27 23:45:03,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 455 transitions, 6639 flow [2024-06-27 23:45:06,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 455 transitions, 6506 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:45:06,689 INFO L231 Difference]: Finished difference. Result has 472 places, 443 transitions, 5039 flow [2024-06-27 23:45:06,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5039, PETRI_PLACES=472, PETRI_TRANSITIONS=443} [2024-06-27 23:45:06,690 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 440 predicate places. [2024-06-27 23:45:06,690 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 443 transitions, 5039 flow [2024-06-27 23:45:06,690 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) [2024-06-27 23:45:06,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:06,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:06,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:45:06,690 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)] === [2024-06-27 23:45:06,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash 920845383, now seen corresponding path program 25 times [2024-06-27 23:45:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645249528] [2024-06-27 23:45:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:08,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645249528] [2024-06-27 23:45:08,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645249528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:08,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:08,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077444948] [2024-06-27 23:45:08,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:08,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:08,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:08,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:08,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 443 transitions, 5039 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) [2024-06-27 23:45:08,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:08,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:08,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:08,799 INFO L124 PetriNetUnfolderBase]: 906/1550 cut-off events. [2024-06-27 23:45:08,800 INFO L125 PetriNetUnfolderBase]: For 725812/725812 co-relation queries the response was YES. [2024-06-27 23:45:08,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16476 conditions, 1550 events. 906/1550 cut-off events. For 725812/725812 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7979 event pairs, 209 based on Foata normal form. 3/1553 useless extension candidates. Maximal degree in co-relation 16260. Up to 1146 conditions per place. [2024-06-27 23:45:08,823 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 377 selfloop transitions, 83 changer transitions 0/462 dead transitions. [2024-06-27 23:45:08,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 462 transitions, 6703 flow [2024-06-27 23:45:08,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:45:08,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:45:08,824 INFO L175 Difference]: Start difference. First operand has 472 places, 443 transitions, 5039 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:45:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 462 transitions, 6703 flow [2024-06-27 23:45:11,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 462 transitions, 6566 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:11,351 INFO L231 Difference]: Finished difference. Result has 474 places, 443 transitions, 5075 flow [2024-06-27 23:45:11,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5075, PETRI_PLACES=474, PETRI_TRANSITIONS=443} [2024-06-27 23:45:11,352 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-27 23:45:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 443 transitions, 5075 flow [2024-06-27 23:45:11,352 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) [2024-06-27 23:45:11,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:11,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:11,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:45:11,352 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)] === [2024-06-27 23:45:11,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:11,352 INFO L85 PathProgramCache]: Analyzing trace with hash 920837726, now seen corresponding path program 30 times [2024-06-27 23:45:11,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:11,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371793139] [2024-06-27 23:45:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:11,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:12,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:12,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371793139] [2024-06-27 23:45:12,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371793139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:12,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:12,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:12,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106608471] [2024-06-27 23:45:12,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:12,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:12,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:12,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:12,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 443 transitions, 5075 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) [2024-06-27 23:45:12,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:12,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:12,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:13,475 INFO L124 PetriNetUnfolderBase]: 904/1547 cut-off events. [2024-06-27 23:45:13,475 INFO L125 PetriNetUnfolderBase]: For 691192/691192 co-relation queries the response was YES. [2024-06-27 23:45:13,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16404 conditions, 1547 events. 904/1547 cut-off events. For 691192/691192 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7942 event pairs, 212 based on Foata normal form. 1/1548 useless extension candidates. Maximal degree in co-relation 16187. Up to 1364 conditions per place. [2024-06-27 23:45:13,499 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 380 selfloop transitions, 72 changer transitions 0/454 dead transitions. [2024-06-27 23:45:13,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 454 transitions, 6347 flow [2024-06-27 23:45:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:45:13,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:45:13,500 INFO L175 Difference]: Start difference. First operand has 474 places, 443 transitions, 5075 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:45:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 454 transitions, 6347 flow [2024-06-27 23:45:15,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 454 transitions, 6168 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:15,870 INFO L231 Difference]: Finished difference. Result has 475 places, 443 transitions, 5045 flow [2024-06-27 23:45:15,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5045, PETRI_PLACES=475, PETRI_TRANSITIONS=443} [2024-06-27 23:45:15,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2024-06-27 23:45:15,870 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 443 transitions, 5045 flow [2024-06-27 23:45:15,870 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) [2024-06-27 23:45:15,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:15,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:45:15,871 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)] === [2024-06-27 23:45:15,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1444300092, now seen corresponding path program 12 times [2024-06-27 23:45:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:15,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185421058] [2024-06-27 23:45:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:17,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185421058] [2024-06-27 23:45:17,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185421058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:17,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:17,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91855183] [2024-06-27 23:45:17,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:17,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:17,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:17,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:17,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:17,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 443 transitions, 5045 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) [2024-06-27 23:45:17,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:17,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:17,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:18,117 INFO L124 PetriNetUnfolderBase]: 898/1538 cut-off events. [2024-06-27 23:45:18,118 INFO L125 PetriNetUnfolderBase]: For 684013/684013 co-relation queries the response was YES. [2024-06-27 23:45:18,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15824 conditions, 1538 events. 898/1538 cut-off events. For 684013/684013 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7897 event pairs, 207 based on Foata normal form. 3/1541 useless extension candidates. Maximal degree in co-relation 15606. Up to 1487 conditions per place. [2024-06-27 23:45:18,141 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 431 selfloop transitions, 23 changer transitions 0/456 dead transitions. [2024-06-27 23:45:18,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 456 transitions, 6005 flow [2024-06-27 23:45:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:45:18,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 23:45:18,142 INFO L175 Difference]: Start difference. First operand has 475 places, 443 transitions, 5045 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:45:18,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 456 transitions, 6005 flow [2024-06-27 23:45:20,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 456 transitions, 5828 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:20,497 INFO L231 Difference]: Finished difference. Result has 474 places, 445 transitions, 4950 flow [2024-06-27 23:45:20,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4950, PETRI_PLACES=474, PETRI_TRANSITIONS=445} [2024-06-27 23:45:20,497 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-27 23:45:20,497 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 445 transitions, 4950 flow [2024-06-27 23:45:20,497 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) [2024-06-27 23:45:20,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:20,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:45:20,498 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)] === [2024-06-27 23:45:20,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -476362570, now seen corresponding path program 31 times [2024-06-27 23:45:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655674520] [2024-06-27 23:45:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:22,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:22,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655674520] [2024-06-27 23:45:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655674520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:22,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658526887] [2024-06-27 23:45:22,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:22,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:22,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 445 transitions, 4950 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) [2024-06-27 23:45:22,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:22,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:22,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:22,798 INFO L124 PetriNetUnfolderBase]: 906/1551 cut-off events. [2024-06-27 23:45:22,798 INFO L125 PetriNetUnfolderBase]: For 676072/676072 co-relation queries the response was YES. [2024-06-27 23:45:22,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16028 conditions, 1551 events. 906/1551 cut-off events. For 676072/676072 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8009 event pairs, 209 based on Foata normal form. 1/1552 useless extension candidates. Maximal degree in co-relation 15809. Up to 1475 conditions per place. [2024-06-27 23:45:22,817 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 426 selfloop transitions, 32 changer transitions 0/460 dead transitions. [2024-06-27 23:45:22,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 460 transitions, 6634 flow [2024-06-27 23:45:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:45:22,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:45:22,819 INFO L175 Difference]: Start difference. First operand has 474 places, 445 transitions, 4950 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:45:22,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 460 transitions, 6634 flow [2024-06-27 23:45:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 460 transitions, 6516 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:25,175 INFO L231 Difference]: Finished difference. Result has 475 places, 449 transitions, 4953 flow [2024-06-27 23:45:25,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4832, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4953, PETRI_PLACES=475, PETRI_TRANSITIONS=449} [2024-06-27 23:45:25,175 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 443 predicate places. [2024-06-27 23:45:25,175 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 449 transitions, 4953 flow [2024-06-27 23:45:25,175 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) [2024-06-27 23:45:25,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:25,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:45:25,176 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)] === [2024-06-27 23:45:25,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash -476095443, now seen corresponding path program 26 times [2024-06-27 23:45:25,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:25,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700243377] [2024-06-27 23:45:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700243377] [2024-06-27 23:45:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700243377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:26,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:26,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:26,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552127210] [2024-06-27 23:45:26,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:26,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:26,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:26,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:26,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:26,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:26,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 449 transitions, 4953 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) [2024-06-27 23:45:26,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:26,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:26,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:27,294 INFO L124 PetriNetUnfolderBase]: 952/1626 cut-off events. [2024-06-27 23:45:27,294 INFO L125 PetriNetUnfolderBase]: For 820342/820342 co-relation queries the response was YES. [2024-06-27 23:45:27,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 1626 events. 952/1626 cut-off events. For 820342/820342 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8426 event pairs, 218 based on Foata normal form. 3/1629 useless extension candidates. Maximal degree in co-relation 17331. Up to 1405 conditions per place. [2024-06-27 23:45:27,318 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 432 selfloop transitions, 43 changer transitions 0/477 dead transitions. [2024-06-27 23:45:27,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 477 transitions, 7133 flow [2024-06-27 23:45:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:45:27,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:45:27,320 INFO L175 Difference]: Start difference. First operand has 475 places, 449 transitions, 4953 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:45:27,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 477 transitions, 7133 flow [2024-06-27 23:45:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 477 transitions, 7017 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:30,223 INFO L231 Difference]: Finished difference. Result has 478 places, 458 transitions, 5050 flow [2024-06-27 23:45:30,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5050, PETRI_PLACES=478, PETRI_TRANSITIONS=458} [2024-06-27 23:45:30,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 446 predicate places. [2024-06-27 23:45:30,223 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 458 transitions, 5050 flow [2024-06-27 23:45:30,223 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) [2024-06-27 23:45:30,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:30,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:30,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:45:30,223 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)] === [2024-06-27 23:45:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -476095164, now seen corresponding path program 13 times [2024-06-27 23:45:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552579905] [2024-06-27 23:45:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552579905] [2024-06-27 23:45:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552579905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332757487] [2024-06-27 23:45:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:31,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 458 transitions, 5050 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) [2024-06-27 23:45:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:32,688 INFO L124 PetriNetUnfolderBase]: 958/1636 cut-off events. [2024-06-27 23:45:32,689 INFO L125 PetriNetUnfolderBase]: For 815002/815002 co-relation queries the response was YES. [2024-06-27 23:45:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17659 conditions, 1636 events. 958/1636 cut-off events. For 815002/815002 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8510 event pairs, 211 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 17439. Up to 1479 conditions per place. [2024-06-27 23:45:32,712 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 432 selfloop transitions, 43 changer transitions 0/477 dead transitions. [2024-06-27 23:45:32,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 477 transitions, 7144 flow [2024-06-27 23:45:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:45:32,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:45:32,713 INFO L175 Difference]: Start difference. First operand has 478 places, 458 transitions, 5050 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:45:32,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 477 transitions, 7144 flow [2024-06-27 23:45:35,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 477 transitions, 7037 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 23:45:35,666 INFO L231 Difference]: Finished difference. Result has 483 places, 461 transitions, 5086 flow [2024-06-27 23:45:35,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5086, PETRI_PLACES=483, PETRI_TRANSITIONS=461} [2024-06-27 23:45:35,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 451 predicate places. [2024-06-27 23:45:35,666 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 461 transitions, 5086 flow [2024-06-27 23:45:35,667 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) [2024-06-27 23:45:35,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:35,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:35,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:45:35,667 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)] === [2024-06-27 23:45:35,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash -476085864, now seen corresponding path program 14 times [2024-06-27 23:45:35,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:35,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792832993] [2024-06-27 23:45:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:35,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792832993] [2024-06-27 23:45:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792832993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:37,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:37,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71517511] [2024-06-27 23:45:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:37,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:37,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:37,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 461 transitions, 5086 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) [2024-06-27 23:45:37,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:37,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:37,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:38,173 INFO L124 PetriNetUnfolderBase]: 952/1626 cut-off events. [2024-06-27 23:45:38,173 INFO L125 PetriNetUnfolderBase]: For 792487/792487 co-relation queries the response was YES. [2024-06-27 23:45:38,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17271 conditions, 1626 events. 952/1626 cut-off events. For 792487/792487 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8458 event pairs, 212 based on Foata normal form. 2/1628 useless extension candidates. Maximal degree in co-relation 17050. Up to 1472 conditions per place. [2024-06-27 23:45:38,199 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 428 selfloop transitions, 45 changer transitions 0/475 dead transitions. [2024-06-27 23:45:38,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 475 transitions, 6772 flow [2024-06-27 23:45:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:45:38,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2024-06-27 23:45:38,200 INFO L175 Difference]: Start difference. First operand has 483 places, 461 transitions, 5086 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:45:38,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 475 transitions, 6772 flow [2024-06-27 23:45:40,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 475 transitions, 6654 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:40,953 INFO L231 Difference]: Finished difference. Result has 485 places, 461 transitions, 5063 flow [2024-06-27 23:45:40,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5063, PETRI_PLACES=485, PETRI_TRANSITIONS=461} [2024-06-27 23:45:40,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 453 predicate places. [2024-06-27 23:45:40,954 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 461 transitions, 5063 flow [2024-06-27 23:45:40,955 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) [2024-06-27 23:45:40,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:40,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:40,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:45:40,955 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)] === [2024-06-27 23:45:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 85774744, now seen corresponding path program 15 times [2024-06-27 23:45:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093601558] [2024-06-27 23:45:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:42,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:42,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093601558] [2024-06-27 23:45:42,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093601558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:42,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:42,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:42,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775259264] [2024-06-27 23:45:42,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:42,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:42,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:42,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:42,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:42,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:42,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 461 transitions, 5063 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) [2024-06-27 23:45:42,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:42,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:42,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:43,591 INFO L124 PetriNetUnfolderBase]: 968/1652 cut-off events. [2024-06-27 23:45:43,591 INFO L125 PetriNetUnfolderBase]: For 832688/832688 co-relation queries the response was YES. [2024-06-27 23:45:43,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17784 conditions, 1652 events. 968/1652 cut-off events. For 832688/832688 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8604 event pairs, 217 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 17563. Up to 1581 conditions per place. [2024-06-27 23:45:43,617 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 451 selfloop transitions, 25 changer transitions 0/478 dead transitions. [2024-06-27 23:45:43,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 478 transitions, 6467 flow [2024-06-27 23:45:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:45:43,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2024-06-27 23:45:43,618 INFO L175 Difference]: Start difference. First operand has 485 places, 461 transitions, 5063 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:45:43,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 478 transitions, 6467 flow [2024-06-27 23:45:46,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 478 transitions, 6370 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:46,851 INFO L231 Difference]: Finished difference. Result has 487 places, 465 transitions, 5089 flow [2024-06-27 23:45:46,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5089, PETRI_PLACES=487, PETRI_TRANSITIONS=465} [2024-06-27 23:45:46,852 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 455 predicate places. [2024-06-27 23:45:46,852 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 465 transitions, 5089 flow [2024-06-27 23:45:46,852 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) [2024-06-27 23:45:46,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:46,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:46,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:45:46,852 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)] === [2024-06-27 23:45:46,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2068282644, now seen corresponding path program 16 times [2024-06-27 23:45:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:46,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699271200] [2024-06-27 23:45:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699271200] [2024-06-27 23:45:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699271200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717044407] [2024-06-27 23:45:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:48,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:48,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:48,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 465 transitions, 5089 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) [2024-06-27 23:45:48,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:48,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:48,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:49,295 INFO L124 PetriNetUnfolderBase]: 964/1646 cut-off events. [2024-06-27 23:45:49,295 INFO L125 PetriNetUnfolderBase]: For 810549/810549 co-relation queries the response was YES. [2024-06-27 23:45:49,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17393 conditions, 1646 events. 964/1646 cut-off events. For 810549/810549 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8563 event pairs, 217 based on Foata normal form. 2/1648 useless extension candidates. Maximal degree in co-relation 17171. Up to 1578 conditions per place. [2024-06-27 23:45:49,321 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 449 selfloop transitions, 26 changer transitions 0/477 dead transitions. [2024-06-27 23:45:49,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 477 transitions, 6071 flow [2024-06-27 23:45:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 23:45:49,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305785123966942 [2024-06-27 23:45:49,322 INFO L175 Difference]: Start difference. First operand has 487 places, 465 transitions, 5089 flow. Second operand 11 states and 120 transitions. [2024-06-27 23:45:49,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 477 transitions, 6071 flow [2024-06-27 23:45:52,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 477 transitions, 6025 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 23:45:52,300 INFO L231 Difference]: Finished difference. Result has 492 places, 465 transitions, 5100 flow [2024-06-27 23:45:52,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5043, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5100, PETRI_PLACES=492, PETRI_TRANSITIONS=465} [2024-06-27 23:45:52,300 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 460 predicate places. [2024-06-27 23:45:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 465 transitions, 5100 flow [2024-06-27 23:45:52,300 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) [2024-06-27 23:45:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:52,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:45:52,301 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)] === [2024-06-27 23:45:52,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -476354634, now seen corresponding path program 17 times [2024-06-27 23:45:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922157014] [2024-06-27 23:45:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922157014] [2024-06-27 23:45:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922157014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:53,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453572761] [2024-06-27 23:45:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:54,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 465 transitions, 5100 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) [2024-06-27 23:45:54,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:54,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:54,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:54,784 INFO L124 PetriNetUnfolderBase]: 970/1656 cut-off events. [2024-06-27 23:45:54,784 INFO L125 PetriNetUnfolderBase]: For 819845/819845 co-relation queries the response was YES. [2024-06-27 23:45:54,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17499 conditions, 1656 events. 970/1656 cut-off events. For 819845/819845 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8640 event pairs, 213 based on Foata normal form. 2/1658 useless extension candidates. Maximal degree in co-relation 17275. Up to 1490 conditions per place. [2024-06-27 23:45:54,811 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 432 selfloop transitions, 48 changer transitions 0/482 dead transitions. [2024-06-27 23:45:54,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 482 transitions, 6840 flow [2024-06-27 23:45:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:45:54,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:45:54,812 INFO L175 Difference]: Start difference. First operand has 492 places, 465 transitions, 5100 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:45:54,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 482 transitions, 6840 flow [2024-06-27 23:45:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 482 transitions, 6782 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:57,929 INFO L231 Difference]: Finished difference. Result has 495 places, 467 transitions, 5167 flow [2024-06-27 23:45:57,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5167, PETRI_PLACES=495, PETRI_TRANSITIONS=467} [2024-06-27 23:45:57,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 463 predicate places. [2024-06-27 23:45:57,930 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 467 transitions, 5167 flow [2024-06-27 23:45:57,930 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) [2024-06-27 23:45:57,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:57,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:57,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:45:57,930 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)] === [2024-06-27 23:45:57,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash 771275279, now seen corresponding path program 27 times [2024-06-27 23:45:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:57,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021205484] [2024-06-27 23:45:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021205484] [2024-06-27 23:45:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021205484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644179453] [2024-06-27 23:45:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:59,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:59,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:45:59,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 467 transitions, 5167 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) [2024-06-27 23:45:59,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:59,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:45:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:00,185 INFO L124 PetriNetUnfolderBase]: 994/1695 cut-off events. [2024-06-27 23:46:00,185 INFO L125 PetriNetUnfolderBase]: For 893878/893878 co-relation queries the response was YES. [2024-06-27 23:46:00,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18296 conditions, 1695 events. 994/1695 cut-off events. For 893878/893878 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8873 event pairs, 218 based on Foata normal form. 3/1698 useless extension candidates. Maximal degree in co-relation 18071. Up to 1429 conditions per place. [2024-06-27 23:46:00,213 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 442 selfloop transitions, 50 changer transitions 0/494 dead transitions. [2024-06-27 23:46:00,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 494 transitions, 7365 flow [2024-06-27 23:46:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:46:00,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:46:00,214 INFO L175 Difference]: Start difference. First operand has 495 places, 467 transitions, 5167 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:46:00,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 494 transitions, 7365 flow [2024-06-27 23:46:03,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 494 transitions, 7276 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:03,615 INFO L231 Difference]: Finished difference. Result has 497 places, 473 transitions, 5241 flow [2024-06-27 23:46:03,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5078, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5241, PETRI_PLACES=497, PETRI_TRANSITIONS=473} [2024-06-27 23:46:03,615 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2024-06-27 23:46:03,615 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 473 transitions, 5241 flow [2024-06-27 23:46:03,615 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) [2024-06-27 23:46:03,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:03,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:03,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:46:03,616 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)] === [2024-06-27 23:46:03,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 85765165, now seen corresponding path program 28 times [2024-06-27 23:46:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541342555] [2024-06-27 23:46:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541342555] [2024-06-27 23:46:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541342555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007980861] [2024-06-27 23:46:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:04,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:05,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:05,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 473 transitions, 5241 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) [2024-06-27 23:46:05,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:05,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:05,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:05,732 INFO L124 PetriNetUnfolderBase]: 1003/1710 cut-off events. [2024-06-27 23:46:05,733 INFO L125 PetriNetUnfolderBase]: For 904871/904871 co-relation queries the response was YES. [2024-06-27 23:46:05,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18437 conditions, 1710 events. 1003/1710 cut-off events. For 904871/904871 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8985 event pairs, 218 based on Foata normal form. 3/1713 useless extension candidates. Maximal degree in co-relation 18211. Up to 1642 conditions per place. [2024-06-27 23:46:05,756 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 464 selfloop transitions, 23 changer transitions 0/489 dead transitions. [2024-06-27 23:46:05,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 489 transitions, 6297 flow [2024-06-27 23:46:05,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:46:05,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 23:46:05,757 INFO L175 Difference]: Start difference. First operand has 497 places, 473 transitions, 5241 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:46:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 489 transitions, 6297 flow [2024-06-27 23:46:09,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 489 transitions, 6213 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:46:09,106 INFO L231 Difference]: Finished difference. Result has 501 places, 476 transitions, 5259 flow [2024-06-27 23:46:09,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5163, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5259, PETRI_PLACES=501, PETRI_TRANSITIONS=476} [2024-06-27 23:46:09,107 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 469 predicate places. [2024-06-27 23:46:09,107 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 476 transitions, 5259 flow [2024-06-27 23:46:09,107 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) [2024-06-27 23:46:09,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:09,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:46:09,107 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)] === [2024-06-27 23:46:09,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash -228200975, now seen corresponding path program 29 times [2024-06-27 23:46:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102586282] [2024-06-27 23:46:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102586282] [2024-06-27 23:46:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102586282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:10,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:10,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:10,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108347164] [2024-06-27 23:46:10,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:10,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:10,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:10,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:10,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:10,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 476 transitions, 5259 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) [2024-06-27 23:46:10,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:10,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:10,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:11,245 INFO L124 PetriNetUnfolderBase]: 1012/1725 cut-off events. [2024-06-27 23:46:11,245 INFO L125 PetriNetUnfolderBase]: For 914910/914910 co-relation queries the response was YES. [2024-06-27 23:46:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18514 conditions, 1725 events. 1012/1725 cut-off events. For 914910/914910 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9069 event pairs, 218 based on Foata normal form. 3/1728 useless extension candidates. Maximal degree in co-relation 18287. Up to 1587 conditions per place. [2024-06-27 23:46:11,273 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 455 selfloop transitions, 39 changer transitions 0/496 dead transitions. [2024-06-27 23:46:11,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 496 transitions, 7073 flow [2024-06-27 23:46:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:46:11,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:46:11,274 INFO L175 Difference]: Start difference. First operand has 501 places, 476 transitions, 5259 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:46:11,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 496 transitions, 7073 flow [2024-06-27 23:46:14,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 496 transitions, 7021 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:14,796 INFO L231 Difference]: Finished difference. Result has 503 places, 479 transitions, 5333 flow [2024-06-27 23:46:14,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5207, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5333, PETRI_PLACES=503, PETRI_TRANSITIONS=479} [2024-06-27 23:46:14,796 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-27 23:46:14,796 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 479 transitions, 5333 flow [2024-06-27 23:46:14,796 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) [2024-06-27 23:46:14,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:14,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:14,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:46:14,797 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)] === [2024-06-27 23:46:14,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash -228201192, now seen corresponding path program 32 times [2024-06-27 23:46:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674458272] [2024-06-27 23:46:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674458272] [2024-06-27 23:46:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674458272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:16,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:16,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270737293] [2024-06-27 23:46:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:16,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:16,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 479 transitions, 5333 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) [2024-06-27 23:46:16,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:16,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:16,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:16,894 INFO L124 PetriNetUnfolderBase]: 1010/1722 cut-off events. [2024-06-27 23:46:16,895 INFO L125 PetriNetUnfolderBase]: For 874294/874294 co-relation queries the response was YES. [2024-06-27 23:46:16,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 1722 events. 1010/1722 cut-off events. For 874294/874294 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9040 event pairs, 223 based on Foata normal form. 1/1723 useless extension candidates. Maximal degree in co-relation 18192. Up to 1688 conditions per place. [2024-06-27 23:46:16,922 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 468 selfloop transitions, 18 changer transitions 0/488 dead transitions. [2024-06-27 23:46:16,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 488 transitions, 6325 flow [2024-06-27 23:46:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:46:16,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32727272727272727 [2024-06-27 23:46:16,923 INFO L175 Difference]: Start difference. First operand has 503 places, 479 transitions, 5333 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:46:16,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 488 transitions, 6325 flow [2024-06-27 23:46:20,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 488 transitions, 6209 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:20,312 INFO L231 Difference]: Finished difference. Result has 505 places, 479 transitions, 5258 flow [2024-06-27 23:46:20,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5258, PETRI_PLACES=505, PETRI_TRANSITIONS=479} [2024-06-27 23:46:20,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 473 predicate places. [2024-06-27 23:46:20,313 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 479 transitions, 5258 flow [2024-06-27 23:46:20,313 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) [2024-06-27 23:46:20,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:20,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:20,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:46:20,313 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)] === [2024-06-27 23:46:20,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:20,314 INFO L85 PathProgramCache]: Analyzing trace with hash -228193256, now seen corresponding path program 18 times [2024-06-27 23:46:20,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:20,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527584282] [2024-06-27 23:46:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:21,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527584282] [2024-06-27 23:46:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527584282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:21,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:21,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549930023] [2024-06-27 23:46:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:21,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:21,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:21,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:21,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 479 transitions, 5258 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) [2024-06-27 23:46:21,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:21,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:21,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:22,760 INFO L124 PetriNetUnfolderBase]: 1016/1732 cut-off events. [2024-06-27 23:46:22,761 INFO L125 PetriNetUnfolderBase]: For 900494/900494 co-relation queries the response was YES. [2024-06-27 23:46:22,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18452 conditions, 1732 events. 1016/1732 cut-off events. For 900494/900494 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9126 event pairs, 215 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 18223. Up to 1624 conditions per place. [2024-06-27 23:46:22,791 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 455 selfloop transitions, 37 changer transitions 0/494 dead transitions. [2024-06-27 23:46:22,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 494 transitions, 6674 flow [2024-06-27 23:46:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:46:22,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-27 23:46:22,792 INFO L175 Difference]: Start difference. First operand has 505 places, 479 transitions, 5258 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:46:22,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 494 transitions, 6674 flow [2024-06-27 23:46:26,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 494 transitions, 6625 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:26,113 INFO L231 Difference]: Finished difference. Result has 507 places, 481 transitions, 5318 flow [2024-06-27 23:46:26,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5209, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5318, PETRI_PLACES=507, PETRI_TRANSITIONS=481} [2024-06-27 23:46:26,114 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 475 predicate places. [2024-06-27 23:46:26,114 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 481 transitions, 5318 flow [2024-06-27 23:46:26,114 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) [2024-06-27 23:46:26,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:26,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:26,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:46:26,114 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)] === [2024-06-27 23:46:26,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:26,115 INFO L85 PathProgramCache]: Analyzing trace with hash -483719955, now seen corresponding path program 7 times [2024-06-27 23:46:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699350303] [2024-06-27 23:46:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:27,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:27,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699350303] [2024-06-27 23:46:27,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699350303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:27,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:27,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930787868] [2024-06-27 23:46:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:27,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:27,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:27,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:27,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 481 transitions, 5318 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) [2024-06-27 23:46:27,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:27,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:27,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:28,426 INFO L124 PetriNetUnfolderBase]: 971/1686 cut-off events. [2024-06-27 23:46:28,427 INFO L125 PetriNetUnfolderBase]: For 877334/877334 co-relation queries the response was YES. [2024-06-27 23:46:28,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18114 conditions, 1686 events. 971/1686 cut-off events. For 877334/877334 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9061 event pairs, 205 based on Foata normal form. 1/1687 useless extension candidates. Maximal degree in co-relation 17884. Up to 1506 conditions per place. [2024-06-27 23:46:28,454 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 403 selfloop transitions, 18 changer transitions 0/492 dead transitions. [2024-06-27 23:46:28,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 492 transitions, 6212 flow [2024-06-27 23:46:28,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:28,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:46:28,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:46:28,455 INFO L175 Difference]: Start difference. First operand has 507 places, 481 transitions, 5318 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:46:28,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 492 transitions, 6212 flow [2024-06-27 23:46:31,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 492 transitions, 6145 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:31,499 INFO L231 Difference]: Finished difference. Result has 509 places, 483 transitions, 5328 flow [2024-06-27 23:46:31,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5251, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5328, PETRI_PLACES=509, PETRI_TRANSITIONS=483} [2024-06-27 23:46:31,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-27 23:46:31,500 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 483 transitions, 5328 flow [2024-06-27 23:46:31,500 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) [2024-06-27 23:46:31,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:31,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:46:31,500 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)] === [2024-06-27 23:46:31,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -476362353, now seen corresponding path program 30 times [2024-06-27 23:46:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444272614] [2024-06-27 23:46:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:32,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444272614] [2024-06-27 23:46:32,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444272614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:32,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:32,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042477765] [2024-06-27 23:46:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:32,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:32,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 483 transitions, 5328 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) [2024-06-27 23:46:32,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:32,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:32,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:33,589 INFO L124 PetriNetUnfolderBase]: 1008/1720 cut-off events. [2024-06-27 23:46:33,589 INFO L125 PetriNetUnfolderBase]: For 867787/867787 co-relation queries the response was YES. [2024-06-27 23:46:33,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17788 conditions, 1720 events. 1008/1720 cut-off events. For 867787/867787 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9061 event pairs, 217 based on Foata normal form. 3/1723 useless extension candidates. Maximal degree in co-relation 17557. Up to 1437 conditions per place. [2024-06-27 23:46:33,617 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 440 selfloop transitions, 60 changer transitions 0/502 dead transitions. [2024-06-27 23:46:33,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 502 transitions, 7140 flow [2024-06-27 23:46:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:46:33,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:46:33,618 INFO L175 Difference]: Start difference. First operand has 509 places, 483 transitions, 5328 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:46:33,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 502 transitions, 7140 flow [2024-06-27 23:46:36,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 502 transitions, 7075 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:36,814 INFO L231 Difference]: Finished difference. Result has 511 places, 483 transitions, 5389 flow [2024-06-27 23:46:36,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5389, PETRI_PLACES=511, PETRI_TRANSITIONS=483} [2024-06-27 23:46:36,815 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 479 predicate places. [2024-06-27 23:46:36,815 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 483 transitions, 5389 flow [2024-06-27 23:46:36,815 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) [2024-06-27 23:46:36,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:36,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:36,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:46:36,816 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)] === [2024-06-27 23:46:36,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:36,816 INFO L85 PathProgramCache]: Analyzing trace with hash 764117782, now seen corresponding path program 33 times [2024-06-27 23:46:36,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:36,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671340785] [2024-06-27 23:46:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:36,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:38,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:38,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671340785] [2024-06-27 23:46:38,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671340785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:38,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:38,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:38,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486475195] [2024-06-27 23:46:38,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:38,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:38,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:38,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:38,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 483 transitions, 5389 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) [2024-06-27 23:46:38,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:38,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:38,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:39,076 INFO L124 PetriNetUnfolderBase]: 1011/1725 cut-off events. [2024-06-27 23:46:39,076 INFO L125 PetriNetUnfolderBase]: For 842240/842240 co-relation queries the response was YES. [2024-06-27 23:46:39,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 1725 events. 1011/1725 cut-off events. For 842240/842240 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9104 event pairs, 223 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 17720. Up to 1649 conditions per place. [2024-06-27 23:46:39,098 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 458 selfloop transitions, 35 changer transitions 0/495 dead transitions. [2024-06-27 23:46:39,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 495 transitions, 6791 flow [2024-06-27 23:46:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:46:39,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 23:46:39,099 INFO L175 Difference]: Start difference. First operand has 511 places, 483 transitions, 5389 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:46:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 495 transitions, 6791 flow [2024-06-27 23:46:42,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 495 transitions, 6667 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:42,013 INFO L231 Difference]: Finished difference. Result has 512 places, 485 transitions, 5360 flow [2024-06-27 23:46:42,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5265, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5360, PETRI_PLACES=512, PETRI_TRANSITIONS=485} [2024-06-27 23:46:42,013 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-27 23:46:42,013 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 485 transitions, 5360 flow [2024-06-27 23:46:42,013 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) [2024-06-27 23:46:42,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:42,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:42,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:46:42,014 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)] === [2024-06-27 23:46:42,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash -227933786, now seen corresponding path program 19 times [2024-06-27 23:46:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009810822] [2024-06-27 23:46:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009810822] [2024-06-27 23:46:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009810822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529713386] [2024-06-27 23:46:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:43,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:43,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:43,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 485 transitions, 5360 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) [2024-06-27 23:46:43,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:43,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:43,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:44,423 INFO L124 PetriNetUnfolderBase]: 1017/1735 cut-off events. [2024-06-27 23:46:44,423 INFO L125 PetriNetUnfolderBase]: For 868937/868937 co-relation queries the response was YES. [2024-06-27 23:46:44,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17982 conditions, 1735 events. 1017/1735 cut-off events. For 868937/868937 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9152 event pairs, 217 based on Foata normal form. 2/1737 useless extension candidates. Maximal degree in co-relation 17749. Up to 1623 conditions per place. [2024-06-27 23:46:44,451 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 463 selfloop transitions, 36 changer transitions 0/501 dead transitions. [2024-06-27 23:46:44,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 501 transitions, 6804 flow [2024-06-27 23:46:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:46:44,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.349862258953168 [2024-06-27 23:46:44,452 INFO L175 Difference]: Start difference. First operand has 512 places, 485 transitions, 5360 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:46:44,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 501 transitions, 6804 flow [2024-06-27 23:46:47,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 501 transitions, 6686 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:47,482 INFO L231 Difference]: Finished difference. Result has 514 places, 487 transitions, 5351 flow [2024-06-27 23:46:47,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5242, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5351, PETRI_PLACES=514, PETRI_TRANSITIONS=487} [2024-06-27 23:46:47,482 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 482 predicate places. [2024-06-27 23:46:47,482 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 487 transitions, 5351 flow [2024-06-27 23:46:47,483 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) [2024-06-27 23:46:47,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:47,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:47,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:46:47,483 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)] === [2024-06-27 23:46:47,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:47,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1912725673, now seen corresponding path program 31 times [2024-06-27 23:46:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379131940] [2024-06-27 23:46:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:48,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:48,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379131940] [2024-06-27 23:46:48,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379131940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:48,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:48,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038140983] [2024-06-27 23:46:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:48,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:48,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:48,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:48,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 487 transitions, 5351 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) [2024-06-27 23:46:48,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:48,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:48,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:49,559 INFO L124 PetriNetUnfolderBase]: 1026/1750 cut-off events. [2024-06-27 23:46:49,559 INFO L125 PetriNetUnfolderBase]: For 895629/895629 co-relation queries the response was YES. [2024-06-27 23:46:49,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18102 conditions, 1750 events. 1026/1750 cut-off events. For 895629/895629 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9244 event pairs, 215 based on Foata normal form. 3/1753 useless extension candidates. Maximal degree in co-relation 17868. Up to 1589 conditions per place. [2024-06-27 23:46:49,587 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 465 selfloop transitions, 40 changer transitions 0/507 dead transitions. [2024-06-27 23:46:49,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 507 transitions, 6839 flow [2024-06-27 23:46:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:46:49,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:46:49,588 INFO L175 Difference]: Start difference. First operand has 514 places, 487 transitions, 5351 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:46:49,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 507 transitions, 6839 flow [2024-06-27 23:46:52,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 507 transitions, 6702 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:46:52,898 INFO L231 Difference]: Finished difference. Result has 513 places, 490 transitions, 5339 flow [2024-06-27 23:46:52,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5214, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5339, PETRI_PLACES=513, PETRI_TRANSITIONS=490} [2024-06-27 23:46:52,899 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 481 predicate places. [2024-06-27 23:46:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 490 transitions, 5339 flow [2024-06-27 23:46:52,899 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) [2024-06-27 23:46:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:52,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:46:52,900 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)] === [2024-06-27 23:46:52,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1912994722, now seen corresponding path program 20 times [2024-06-27 23:46:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:52,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185818999] [2024-06-27 23:46:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:54,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:54,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185818999] [2024-06-27 23:46:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185818999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:54,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:54,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960167299] [2024-06-27 23:46:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:54,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:54,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:46:54,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 490 transitions, 5339 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) [2024-06-27 23:46:54,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:54,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:46:54,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:55,418 INFO L124 PetriNetUnfolderBase]: 1022/1744 cut-off events. [2024-06-27 23:46:55,418 INFO L125 PetriNetUnfolderBase]: For 850798/850798 co-relation queries the response was YES. [2024-06-27 23:46:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17663 conditions, 1744 events. 1022/1744 cut-off events. For 850798/850798 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9244 event pairs, 216 based on Foata normal form. 2/1746 useless extension candidates. Maximal degree in co-relation 17429. Up to 1635 conditions per place. [2024-06-27 23:46:55,446 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 463 selfloop transitions, 37 changer transitions 0/502 dead transitions. [2024-06-27 23:46:55,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 502 transitions, 6371 flow [2024-06-27 23:46:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 23:46:55,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3415977961432507 [2024-06-27 23:46:55,447 INFO L175 Difference]: Start difference. First operand has 513 places, 490 transitions, 5339 flow. Second operand 11 states and 124 transitions. [2024-06-27 23:46:55,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 502 transitions, 6371 flow [2024-06-27 23:46:59,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 502 transitions, 6294 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:59,064 INFO L231 Difference]: Finished difference. Result has 517 places, 490 transitions, 5341 flow [2024-06-27 23:46:59,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5341, PETRI_PLACES=517, PETRI_TRANSITIONS=490} [2024-06-27 23:46:59,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-27 23:46:59,064 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 490 transitions, 5341 flow [2024-06-27 23:46:59,065 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) [2024-06-27 23:46:59,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:59,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:59,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:46:59,065 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)] === [2024-06-27 23:46:59,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -227934065, now seen corresponding path program 32 times [2024-06-27 23:46:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:59,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079756551] [2024-06-27 23:46:59,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:59,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079756551] [2024-06-27 23:47:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079756551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:00,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:00,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:00,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190414074] [2024-06-27 23:47:00,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:00,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:00,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:00,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 490 transitions, 5341 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) [2024-06-27 23:47:00,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:00,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:00,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:01,135 INFO L124 PetriNetUnfolderBase]: 1016/1735 cut-off events. [2024-06-27 23:47:01,135 INFO L125 PetriNetUnfolderBase]: For 823540/823540 co-relation queries the response was YES. [2024-06-27 23:47:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 1735 events. 1016/1735 cut-off events. For 823540/823540 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9195 event pairs, 217 based on Foata normal form. 3/1738 useless extension candidates. Maximal degree in co-relation 16854. Up to 1584 conditions per place. [2024-06-27 23:47:01,162 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 465 selfloop transitions, 39 changer transitions 0/506 dead transitions. [2024-06-27 23:47:01,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 506 transitions, 6409 flow [2024-06-27 23:47:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:47:01,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:47:01,164 INFO L175 Difference]: Start difference. First operand has 517 places, 490 transitions, 5341 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:47:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 506 transitions, 6409 flow [2024-06-27 23:47:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 506 transitions, 6333 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:04,835 INFO L231 Difference]: Finished difference. Result has 518 places, 490 transitions, 5351 flow [2024-06-27 23:47:04,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5265, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5351, PETRI_PLACES=518, PETRI_TRANSITIONS=490} [2024-06-27 23:47:04,835 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-27 23:47:04,835 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 490 transitions, 5351 flow [2024-06-27 23:47:04,835 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) [2024-06-27 23:47:04,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:04,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:04,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:47:04,836 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)] === [2024-06-27 23:47:04,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1657205205, now seen corresponding path program 33 times [2024-06-27 23:47:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:04,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620339404] [2024-06-27 23:47:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:06,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620339404] [2024-06-27 23:47:06,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620339404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:06,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:06,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509761461] [2024-06-27 23:47:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:06,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:06,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 490 transitions, 5351 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) [2024-06-27 23:47:06,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:06,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:06,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:06,994 INFO L124 PetriNetUnfolderBase]: 1025/1750 cut-off events. [2024-06-27 23:47:06,994 INFO L125 PetriNetUnfolderBase]: For 832195/832195 co-relation queries the response was YES. [2024-06-27 23:47:07,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 1750 events. 1025/1750 cut-off events. For 832195/832195 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9281 event pairs, 209 based on Foata normal form. 3/1753 useless extension candidates. Maximal degree in co-relation 16954. Up to 1455 conditions per place. [2024-06-27 23:47:07,025 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 423 selfloop transitions, 84 changer transitions 0/509 dead transitions. [2024-06-27 23:47:07,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 509 transitions, 7212 flow [2024-06-27 23:47:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:47:07,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:47:07,026 INFO L175 Difference]: Start difference. First operand has 518 places, 490 transitions, 5351 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:47:07,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 509 transitions, 7212 flow [2024-06-27 23:47:10,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 509 transitions, 7092 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:10,809 INFO L231 Difference]: Finished difference. Result has 518 places, 493 transitions, 5436 flow [2024-06-27 23:47:10,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5436, PETRI_PLACES=518, PETRI_TRANSITIONS=493} [2024-06-27 23:47:10,809 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-27 23:47:10,809 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 493 transitions, 5436 flow [2024-06-27 23:47:10,809 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) [2024-06-27 23:47:10,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:10,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:47:10,809 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)] === [2024-06-27 23:47:10,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1657204988, now seen corresponding path program 34 times [2024-06-27 23:47:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:10,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125800786] [2024-06-27 23:47:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:12,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:12,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125800786] [2024-06-27 23:47:12,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125800786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:12,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158951623] [2024-06-27 23:47:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:12,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:12,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:12,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:12,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 493 transitions, 5436 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) [2024-06-27 23:47:12,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:12,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:12,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:13,038 INFO L124 PetriNetUnfolderBase]: 1028/1755 cut-off events. [2024-06-27 23:47:13,038 INFO L125 PetriNetUnfolderBase]: For 803649/803649 co-relation queries the response was YES. [2024-06-27 23:47:13,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17342 conditions, 1755 events. 1028/1755 cut-off events. For 803649/803649 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9351 event pairs, 221 based on Foata normal form. 1/1756 useless extension candidates. Maximal degree in co-relation 17105. Up to 1678 conditions per place. [2024-06-27 23:47:13,067 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 464 selfloop transitions, 39 changer transitions 0/505 dead transitions. [2024-06-27 23:47:13,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 505 transitions, 6868 flow [2024-06-27 23:47:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:47:13,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:47:13,068 INFO L175 Difference]: Start difference. First operand has 518 places, 493 transitions, 5436 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:47:13,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 505 transitions, 6868 flow [2024-06-27 23:47:16,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 505 transitions, 6476 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:16,784 INFO L231 Difference]: Finished difference. Result has 518 places, 495 transitions, 5145 flow [2024-06-27 23:47:16,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5044, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5145, PETRI_PLACES=518, PETRI_TRANSITIONS=495} [2024-06-27 23:47:16,784 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 486 predicate places. [2024-06-27 23:47:16,785 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 495 transitions, 5145 flow [2024-06-27 23:47:16,785 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) [2024-06-27 23:47:16,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:16,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:47:16,785 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)] === [2024-06-27 23:47:16,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash -483504753, now seen corresponding path program 34 times [2024-06-27 23:47:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95461679] [2024-06-27 23:47:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:16,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95461679] [2024-06-27 23:47:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95461679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:18,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:18,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811896686] [2024-06-27 23:47:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:18,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:18,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:18,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:18,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 495 transitions, 5145 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) [2024-06-27 23:47:18,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:18,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:18,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:18,953 INFO L124 PetriNetUnfolderBase]: 1039/1774 cut-off events. [2024-06-27 23:47:18,953 INFO L125 PetriNetUnfolderBase]: For 847712/847712 co-relation queries the response was YES. [2024-06-27 23:47:18,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17188 conditions, 1774 events. 1039/1774 cut-off events. For 847712/847712 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9471 event pairs, 215 based on Foata normal form. 3/1777 useless extension candidates. Maximal degree in co-relation 16950. Up to 1471 conditions per place. [2024-06-27 23:47:18,982 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 439 selfloop transitions, 73 changer transitions 0/514 dead transitions. [2024-06-27 23:47:18,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 514 transitions, 6639 flow [2024-06-27 23:47:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:47:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:47:18,983 INFO L175 Difference]: Start difference. First operand has 518 places, 495 transitions, 5145 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:47:18,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 514 transitions, 6639 flow [2024-06-27 23:47:22,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 514 transitions, 6505 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:22,777 INFO L231 Difference]: Finished difference. Result has 519 places, 498 transitions, 5192 flow [2024-06-27 23:47:22,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5011, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5192, PETRI_PLACES=519, PETRI_TRANSITIONS=498} [2024-06-27 23:47:22,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 487 predicate places. [2024-06-27 23:47:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 498 transitions, 5192 flow [2024-06-27 23:47:22,777 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) [2024-06-27 23:47:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:22,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:47:22,778 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)] === [2024-06-27 23:47:22,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -483512193, now seen corresponding path program 35 times [2024-06-27 23:47:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448652542] [2024-06-27 23:47:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:24,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448652542] [2024-06-27 23:47:24,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448652542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:24,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613063505] [2024-06-27 23:47:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:24,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:24,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 498 transitions, 5192 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) [2024-06-27 23:47:24,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:24,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:24,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:24,934 INFO L124 PetriNetUnfolderBase]: 1033/1765 cut-off events. [2024-06-27 23:47:24,935 INFO L125 PetriNetUnfolderBase]: For 799936/799936 co-relation queries the response was YES. [2024-06-27 23:47:24,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16700 conditions, 1765 events. 1033/1765 cut-off events. For 799936/799936 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9421 event pairs, 211 based on Foata normal form. 3/1768 useless extension candidates. Maximal degree in co-relation 16461. Up to 1467 conditions per place. [2024-06-27 23:47:24,964 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 442 selfloop transitions, 72 changer transitions 0/516 dead transitions. [2024-06-27 23:47:24,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 516 transitions, 6676 flow [2024-06-27 23:47:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:24,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:47:24,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:47:24,965 INFO L175 Difference]: Start difference. First operand has 519 places, 498 transitions, 5192 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:47:24,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 516 transitions, 6676 flow [2024-06-27 23:47:28,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 516 transitions, 6494 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:28,482 INFO L231 Difference]: Finished difference. Result has 520 places, 498 transitions, 5160 flow [2024-06-27 23:47:28,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5010, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5160, PETRI_PLACES=520, PETRI_TRANSITIONS=498} [2024-06-27 23:47:28,483 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 488 predicate places. [2024-06-27 23:47:28,483 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 498 transitions, 5160 flow [2024-06-27 23:47:28,483 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) [2024-06-27 23:47:28,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:28,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:47:28,483 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)] === [2024-06-27 23:47:28,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1657414734, now seen corresponding path program 21 times [2024-06-27 23:47:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958951745] [2024-06-27 23:47:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958951745] [2024-06-27 23:47:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958951745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872473014] [2024-06-27 23:47:30,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:30,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:30,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 498 transitions, 5160 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) [2024-06-27 23:47:30,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:30,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:30,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:30,875 INFO L124 PetriNetUnfolderBase]: 1027/1755 cut-off events. [2024-06-27 23:47:30,875 INFO L125 PetriNetUnfolderBase]: For 750161/750161 co-relation queries the response was YES. [2024-06-27 23:47:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16292 conditions, 1755 events. 1027/1755 cut-off events. For 750161/750161 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9379 event pairs, 204 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 16052. Up to 1587 conditions per place. [2024-06-27 23:47:30,903 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 450 selfloop transitions, 58 changer transitions 0/510 dead transitions. [2024-06-27 23:47:30,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 510 transitions, 6208 flow [2024-06-27 23:47:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 23:47:30,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-27 23:47:30,904 INFO L175 Difference]: Start difference. First operand has 520 places, 498 transitions, 5160 flow. Second operand 11 states and 126 transitions. [2024-06-27 23:47:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 510 transitions, 6208 flow [2024-06-27 23:47:34,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 510 transitions, 6021 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:47:34,184 INFO L231 Difference]: Finished difference. Result has 523 places, 498 transitions, 5094 flow [2024-06-27 23:47:34,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5094, PETRI_PLACES=523, PETRI_TRANSITIONS=498} [2024-06-27 23:47:34,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 491 predicate places. [2024-06-27 23:47:34,184 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 498 transitions, 5094 flow [2024-06-27 23:47:34,184 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) [2024-06-27 23:47:34,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:34,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:34,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:47:34,184 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)] === [2024-06-27 23:47:34,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:34,185 INFO L85 PathProgramCache]: Analyzing trace with hash 763910392, now seen corresponding path program 35 times [2024-06-27 23:47:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319482231] [2024-06-27 23:47:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319482231] [2024-06-27 23:47:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319482231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:35,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:35,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:35,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770710032] [2024-06-27 23:47:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:35,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:35,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:35,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 498 transitions, 5094 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) [2024-06-27 23:47:35,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:35,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:35,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:36,311 INFO L124 PetriNetUnfolderBase]: 1025/1752 cut-off events. [2024-06-27 23:47:36,312 INFO L125 PetriNetUnfolderBase]: For 718757/718757 co-relation queries the response was YES. [2024-06-27 23:47:36,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16041 conditions, 1752 events. 1025/1752 cut-off events. For 718757/718757 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9328 event pairs, 218 based on Foata normal form. 1/1753 useless extension candidates. Maximal degree in co-relation 15800. Up to 1676 conditions per place. [2024-06-27 23:47:36,341 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 463 selfloop transitions, 42 changer transitions 0/507 dead transitions. [2024-06-27 23:47:36,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 507 transitions, 6124 flow [2024-06-27 23:47:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:47:36,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-27 23:47:36,342 INFO L175 Difference]: Start difference. First operand has 523 places, 498 transitions, 5094 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:47:36,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 507 transitions, 6124 flow [2024-06-27 23:47:39,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 507 transitions, 5926 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 23:47:39,546 INFO L231 Difference]: Finished difference. Result has 519 places, 498 transitions, 4985 flow [2024-06-27 23:47:39,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4985, PETRI_PLACES=519, PETRI_TRANSITIONS=498} [2024-06-27 23:47:39,546 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 487 predicate places. [2024-06-27 23:47:39,546 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 498 transitions, 4985 flow [2024-06-27 23:47:39,546 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) [2024-06-27 23:47:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:39,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:47:39,546 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)] === [2024-06-27 23:47:39,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 989037227, now seen corresponding path program 1 times [2024-06-27 23:47:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144781122] [2024-06-27 23:47:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:39,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144781122] [2024-06-27 23:47:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144781122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:40,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:40,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:47:40,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114881777] [2024-06-27 23:47:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:40,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:47:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:47:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:47:40,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:47:40,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 498 transitions, 4985 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:40,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:40,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:47:40,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:41,646 INFO L124 PetriNetUnfolderBase]: 969/1711 cut-off events. [2024-06-27 23:47:41,647 INFO L125 PetriNetUnfolderBase]: For 912472/912477 co-relation queries the response was YES. [2024-06-27 23:47:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16992 conditions, 1711 events. 969/1711 cut-off events. For 912472/912477 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9600 event pairs, 87 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 16750. Up to 1249 conditions per place. [2024-06-27 23:47:41,675 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 339 selfloop transitions, 50 changer transitions 0/523 dead transitions. [2024-06-27 23:47:41,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 523 transitions, 6261 flow [2024-06-27 23:47:41,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 23:47:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44077134986225897 [2024-06-27 23:47:41,676 INFO L175 Difference]: Start difference. First operand has 519 places, 498 transitions, 4985 flow. Second operand 11 states and 160 transitions. [2024-06-27 23:47:41,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 523 transitions, 6261 flow [2024-06-27 23:47:45,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 523 transitions, 6172 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:45,112 INFO L231 Difference]: Finished difference. Result has 521 places, 501 transitions, 5055 flow [2024-06-27 23:47:45,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5055, PETRI_PLACES=521, PETRI_TRANSITIONS=501} [2024-06-27 23:47:45,113 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 489 predicate places. [2024-06-27 23:47:45,113 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 501 transitions, 5055 flow [2024-06-27 23:47:45,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:45,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:47:45,114 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:45,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1969201735, now seen corresponding path program 2 times [2024-06-27 23:47:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883696758] [2024-06-27 23:47:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:47,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:47,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883696758] [2024-06-27 23:47:47,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883696758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:47,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:47,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:47,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24981712] [2024-06-27 23:47:47,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:47,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:47,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:47,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:47,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 501 transitions, 5055 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) [2024-06-27 23:47:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:47,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:48,268 INFO L124 PetriNetUnfolderBase]: 1049/1797 cut-off events. [2024-06-27 23:47:48,268 INFO L125 PetriNetUnfolderBase]: For 792013/792013 co-relation queries the response was YES. [2024-06-27 23:47:48,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16875 conditions, 1797 events. 1049/1797 cut-off events. For 792013/792013 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9700 event pairs, 105 based on Foata normal form. 1/1798 useless extension candidates. Maximal degree in co-relation 16632. Up to 1076 conditions per place. [2024-06-27 23:47:48,298 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 173 changer transitions 0/526 dead transitions. [2024-06-27 23:47:48,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 526 transitions, 7373 flow [2024-06-27 23:47:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 23:47:48,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-27 23:47:48,300 INFO L175 Difference]: Start difference. First operand has 521 places, 501 transitions, 5055 flow. Second operand 11 states and 151 transitions. [2024-06-27 23:47:48,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 526 transitions, 7373 flow [2024-06-27 23:47:52,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 526 transitions, 7227 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 23:47:52,015 INFO L231 Difference]: Finished difference. Result has 522 places, 505 transitions, 5290 flow [2024-06-27 23:47:52,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5290, PETRI_PLACES=522, PETRI_TRANSITIONS=505} [2024-06-27 23:47:52,016 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 490 predicate places. [2024-06-27 23:47:52,016 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 505 transitions, 5290 flow [2024-06-27 23:47:52,016 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) [2024-06-27 23:47:52,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:52,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:52,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:47:52,016 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:52,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1355230273, now seen corresponding path program 1 times [2024-06-27 23:47:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:52,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525883591] [2024-06-27 23:47:52,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525883591] [2024-06-27 23:47:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525883591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:53,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:47:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249789330] [2024-06-27 23:47:53,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:53,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:47:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:47:53,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:47:53,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:47:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 505 transitions, 5290 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) [2024-06-27 23:47:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:47:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:54,650 INFO L124 PetriNetUnfolderBase]: 1057/1809 cut-off events. [2024-06-27 23:47:54,650 INFO L125 PetriNetUnfolderBase]: For 813990/813990 co-relation queries the response was YES. [2024-06-27 23:47:54,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17359 conditions, 1809 events. 1057/1809 cut-off events. For 813990/813990 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9773 event pairs, 138 based on Foata normal form. 1/1810 useless extension candidates. Maximal degree in co-relation 17120. Up to 1631 conditions per place. [2024-06-27 23:47:54,680 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 474 selfloop transitions, 54 changer transitions 0/530 dead transitions. [2024-06-27 23:47:54,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 530 transitions, 6850 flow [2024-06-27 23:47:54,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 23:47:54,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-27 23:47:54,681 INFO L175 Difference]: Start difference. First operand has 522 places, 505 transitions, 5290 flow. Second operand 12 states and 145 transitions. [2024-06-27 23:47:54,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 530 transitions, 6850 flow [2024-06-27 23:47:58,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 530 transitions, 6524 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:58,578 INFO L231 Difference]: Finished difference. Result has 527 places, 509 transitions, 5136 flow [2024-06-27 23:47:58,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4964, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5136, PETRI_PLACES=527, PETRI_TRANSITIONS=509} [2024-06-27 23:47:58,579 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-27 23:47:58,579 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 509 transitions, 5136 flow [2024-06-27 23:47:58,579 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) [2024-06-27 23:47:58,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:58,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:58,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:47:58,579 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:58,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -484792321, now seen corresponding path program 2 times [2024-06-27 23:47:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:58,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583642480] [2024-06-27 23:47:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:00,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:00,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583642480] [2024-06-27 23:48:00,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583642480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:00,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:00,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:00,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290960732] [2024-06-27 23:48:00,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:00,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:00,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 509 transitions, 5136 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:00,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:00,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:00,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:01,511 INFO L124 PetriNetUnfolderBase]: 1025/1784 cut-off events. [2024-06-27 23:48:01,512 INFO L125 PetriNetUnfolderBase]: For 950164/950169 co-relation queries the response was YES. [2024-06-27 23:48:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 1784 events. 1025/1784 cut-off events. For 950164/950169 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9929 event pairs, 99 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 17571. Up to 1432 conditions per place. [2024-06-27 23:48:01,541 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 399 selfloop transitions, 61 changer transitions 0/535 dead transitions. [2024-06-27 23:48:01,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 535 transitions, 6543 flow [2024-06-27 23:48:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 165 transitions. [2024-06-27 23:48:01,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:48:01,543 INFO L175 Difference]: Start difference. First operand has 527 places, 509 transitions, 5136 flow. Second operand 12 states and 165 transitions. [2024-06-27 23:48:01,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 535 transitions, 6543 flow [2024-06-27 23:48:05,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 535 transitions, 6448 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:05,529 INFO L231 Difference]: Finished difference. Result has 530 places, 511 transitions, 5198 flow [2024-06-27 23:48:05,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5043, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5198, PETRI_PLACES=530, PETRI_TRANSITIONS=511} [2024-06-27 23:48:05,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 498 predicate places. [2024-06-27 23:48:05,529 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 511 transitions, 5198 flow [2024-06-27 23:48:05,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:05,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:48:05,530 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 989036711, now seen corresponding path program 3 times [2024-06-27 23:48:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:05,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690615078] [2024-06-27 23:48:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690615078] [2024-06-27 23:48:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690615078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:07,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:07,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:07,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380176903] [2024-06-27 23:48:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:07,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:48:07,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 511 transitions, 5198 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) [2024-06-27 23:48:07,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:07,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:48:07,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:08,887 INFO L124 PetriNetUnfolderBase]: 1083/1854 cut-off events. [2024-06-27 23:48:08,887 INFO L125 PetriNetUnfolderBase]: For 880274/880274 co-relation queries the response was YES. [2024-06-27 23:48:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18057 conditions, 1854 events. 1083/1854 cut-off events. For 880274/880274 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10112 event pairs, 104 based on Foata normal form. 1/1855 useless extension candidates. Maximal degree in co-relation 17815. Up to 1127 conditions per place. [2024-06-27 23:48:08,918 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 388 selfloop transitions, 151 changer transitions 0/541 dead transitions. [2024-06-27 23:48:08,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 541 transitions, 8394 flow [2024-06-27 23:48:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-27 23:48:08,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-27 23:48:08,920 INFO L175 Difference]: Start difference. First operand has 530 places, 511 transitions, 5198 flow. Second operand 12 states and 163 transitions. [2024-06-27 23:48:08,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 541 transitions, 8394 flow [2024-06-27 23:48:12,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 541 transitions, 8259 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:12,829 INFO L231 Difference]: Finished difference. Result has 533 places, 519 transitions, 5434 flow [2024-06-27 23:48:12,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5063, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5434, PETRI_PLACES=533, PETRI_TRANSITIONS=519} [2024-06-27 23:48:12,830 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 501 predicate places. [2024-06-27 23:48:12,830 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 519 transitions, 5434 flow [2024-06-27 23:48:12,830 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) [2024-06-27 23:48:12,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:12,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:48:12,831 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:12,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash 989440777, now seen corresponding path program 3 times [2024-06-27 23:48:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:12,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446162220] [2024-06-27 23:48:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:12,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446162220] [2024-06-27 23:48:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446162220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781889186] [2024-06-27 23:48:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:15,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:15,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 519 transitions, 5434 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:15,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:15,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:15,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:15,698 INFO L124 PetriNetUnfolderBase]: 1038/1811 cut-off events. [2024-06-27 23:48:15,698 INFO L125 PetriNetUnfolderBase]: For 951017/951020 co-relation queries the response was YES. [2024-06-27 23:48:15,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18250 conditions, 1811 events. 1038/1811 cut-off events. For 951017/951020 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10100 event pairs, 131 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 18007. Up to 1506 conditions per place. [2024-06-27 23:48:15,728 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 408 selfloop transitions, 59 changer transitions 0/542 dead transitions. [2024-06-27 23:48:15,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 542 transitions, 6439 flow [2024-06-27 23:48:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-27 23:48:15,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:48:15,729 INFO L175 Difference]: Start difference. First operand has 533 places, 519 transitions, 5434 flow. Second operand 12 states and 164 transitions. [2024-06-27 23:48:15,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 542 transitions, 6439 flow [2024-06-27 23:48:20,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 542 transitions, 6250 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:48:20,032 INFO L231 Difference]: Finished difference. Result has 539 places, 520 transitions, 5386 flow [2024-06-27 23:48:20,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5245, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5386, PETRI_PLACES=539, PETRI_TRANSITIONS=520} [2024-06-27 23:48:20,033 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-27 23:48:20,033 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 520 transitions, 5386 flow [2024-06-27 23:48:20,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:20,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:20,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:48:20,033 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:20,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1478937101, now seen corresponding path program 2 times [2024-06-27 23:48:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551462784] [2024-06-27 23:48:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551462784] [2024-06-27 23:48:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551462784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:21,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:21,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886933254] [2024-06-27 23:48:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:21,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:21,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:22,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:22,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 520 transitions, 5386 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) [2024-06-27 23:48:22,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:22,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:22,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:22,802 INFO L124 PetriNetUnfolderBase]: 1090/1867 cut-off events. [2024-06-27 23:48:22,802 INFO L125 PetriNetUnfolderBase]: For 899913/899913 co-relation queries the response was YES. [2024-06-27 23:48:22,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18227 conditions, 1867 events. 1090/1867 cut-off events. For 899913/899913 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10213 event pairs, 146 based on Foata normal form. 1/1868 useless extension candidates. Maximal degree in co-relation 17983. Up to 1688 conditions per place. [2024-06-27 23:48:22,831 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 476 selfloop transitions, 66 changer transitions 0/544 dead transitions. [2024-06-27 23:48:22,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 544 transitions, 6954 flow [2024-06-27 23:48:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:22,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:48:22,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-27 23:48:22,833 INFO L175 Difference]: Start difference. First operand has 539 places, 520 transitions, 5386 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:48:22,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 544 transitions, 6954 flow [2024-06-27 23:48:26,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 544 transitions, 6830 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:26,984 INFO L231 Difference]: Finished difference. Result has 540 places, 522 transitions, 5426 flow [2024-06-27 23:48:26,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5426, PETRI_PLACES=540, PETRI_TRANSITIONS=522} [2024-06-27 23:48:26,984 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 508 predicate places. [2024-06-27 23:48:26,984 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 522 transitions, 5426 flow [2024-06-27 23:48:26,985 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) [2024-06-27 23:48:26,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:26,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:26,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:48:26,985 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:26,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1565778827, now seen corresponding path program 4 times [2024-06-27 23:48:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880371212] [2024-06-27 23:48:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880371212] [2024-06-27 23:48:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880371212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:28,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158296371] [2024-06-27 23:48:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:28,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:28,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:28,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:48:28,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 522 transitions, 5426 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) [2024-06-27 23:48:28,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:28,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:48:28,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:29,762 INFO L124 PetriNetUnfolderBase]: 1098/1880 cut-off events. [2024-06-27 23:48:29,763 INFO L125 PetriNetUnfolderBase]: For 928946/928946 co-relation queries the response was YES. [2024-06-27 23:48:29,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18531 conditions, 1880 events. 1098/1880 cut-off events. For 928946/928946 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10261 event pairs, 154 based on Foata normal form. 1/1881 useless extension candidates. Maximal degree in co-relation 18287. Up to 1744 conditions per place. [2024-06-27 23:48:29,795 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 489 selfloop transitions, 57 changer transitions 0/548 dead transitions. [2024-06-27 23:48:29,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 548 transitions, 7012 flow [2024-06-27 23:48:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 23:48:29,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:48:29,797 INFO L175 Difference]: Start difference. First operand has 540 places, 522 transitions, 5426 flow. Second operand 12 states and 144 transitions. [2024-06-27 23:48:29,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 548 transitions, 7012 flow [2024-06-27 23:48:33,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 548 transitions, 6889 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:48:33,725 INFO L231 Difference]: Finished difference. Result has 545 places, 526 transitions, 5476 flow [2024-06-27 23:48:33,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5303, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5476, PETRI_PLACES=545, PETRI_TRANSITIONS=526} [2024-06-27 23:48:33,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2024-06-27 23:48:33,726 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 526 transitions, 5476 flow [2024-06-27 23:48:33,726 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) [2024-06-27 23:48:33,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:33,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:33,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:48:33,726 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:33,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:33,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1565608451, now seen corresponding path program 3 times [2024-06-27 23:48:33,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508643475] [2024-06-27 23:48:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:35,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508643475] [2024-06-27 23:48:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508643475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:35,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766155102] [2024-06-27 23:48:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:35,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:35,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:35,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 526 transitions, 5476 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) [2024-06-27 23:48:35,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:35,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:35,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:36,604 INFO L124 PetriNetUnfolderBase]: 1101/1885 cut-off events. [2024-06-27 23:48:36,605 INFO L125 PetriNetUnfolderBase]: For 938185/938185 co-relation queries the response was YES. [2024-06-27 23:48:36,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18650 conditions, 1885 events. 1101/1885 cut-off events. For 938185/938185 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 10301 event pairs, 153 based on Foata normal form. 1/1886 useless extension candidates. Maximal degree in co-relation 18404. Up to 1740 conditions per place. [2024-06-27 23:48:36,637 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 487 selfloop transitions, 58 changer transitions 0/547 dead transitions. [2024-06-27 23:48:36,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 547 transitions, 7046 flow [2024-06-27 23:48:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:48:36,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:48:36,639 INFO L175 Difference]: Start difference. First operand has 545 places, 526 transitions, 5476 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:48:36,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 547 transitions, 7046 flow [2024-06-27 23:48:41,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 547 transitions, 6943 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:41,485 INFO L231 Difference]: Finished difference. Result has 547 places, 528 transitions, 5518 flow [2024-06-27 23:48:41,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5373, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5518, PETRI_PLACES=547, PETRI_TRANSITIONS=528} [2024-06-27 23:48:41,486 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-27 23:48:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 528 transitions, 5518 flow [2024-06-27 23:48:41,486 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) [2024-06-27 23:48:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:48:41,486 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:41,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1565625067, now seen corresponding path program 4 times [2024-06-27 23:48:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197171065] [2024-06-27 23:48:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197171065] [2024-06-27 23:48:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197171065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:43,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:43,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553775860] [2024-06-27 23:48:43,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:43,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:43,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 528 transitions, 5518 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) [2024-06-27 23:48:43,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:43,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:43,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:44,631 INFO L124 PetriNetUnfolderBase]: 1056/1843 cut-off events. [2024-06-27 23:48:44,631 INFO L125 PetriNetUnfolderBase]: For 983413/983415 co-relation queries the response was YES. [2024-06-27 23:48:44,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18483 conditions, 1843 events. 1056/1843 cut-off events. For 983413/983415 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10346 event pairs, 139 based on Foata normal form. 2/1839 useless extension candidates. Maximal degree in co-relation 18235. Up to 1576 conditions per place. [2024-06-27 23:48:44,663 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 425 selfloop transitions, 51 changer transitions 0/553 dead transitions. [2024-06-27 23:48:44,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 553 transitions, 6566 flow [2024-06-27 23:48:44,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:48:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:48:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 159 transitions. [2024-06-27 23:48:44,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-06-27 23:48:44,664 INFO L175 Difference]: Start difference. First operand has 547 places, 528 transitions, 5518 flow. Second operand 13 states and 159 transitions. [2024-06-27 23:48:44,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 553 transitions, 6566 flow [2024-06-27 23:48:48,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 553 transitions, 6426 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:48,651 INFO L231 Difference]: Finished difference. Result has 552 places, 531 transitions, 5533 flow [2024-06-27 23:48:48,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5533, PETRI_PLACES=552, PETRI_TRANSITIONS=531} [2024-06-27 23:48:48,651 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 520 predicate places. [2024-06-27 23:48:48,651 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 531 transitions, 5533 flow [2024-06-27 23:48:48,651 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) [2024-06-27 23:48:48,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:48,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:48,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:48:48,652 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:48,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1565757251, now seen corresponding path program 4 times [2024-06-27 23:48:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:48,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052217034] [2024-06-27 23:48:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:50,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052217034] [2024-06-27 23:48:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052217034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:50,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:50,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394964361] [2024-06-27 23:48:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:50,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:50,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:50,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 531 transitions, 5533 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:50,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:50,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:50,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:51,645 INFO L124 PetriNetUnfolderBase]: 1106/1895 cut-off events. [2024-06-27 23:48:51,645 INFO L125 PetriNetUnfolderBase]: For 935610/935610 co-relation queries the response was YES. [2024-06-27 23:48:51,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18563 conditions, 1895 events. 1106/1895 cut-off events. For 935610/935610 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10423 event pairs, 157 based on Foata normal form. 1/1896 useless extension candidates. Maximal degree in co-relation 18313. Up to 1765 conditions per place. [2024-06-27 23:48:51,677 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 488 selfloop transitions, 59 changer transitions 0/549 dead transitions. [2024-06-27 23:48:51,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 549 transitions, 6673 flow [2024-06-27 23:48:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:48:51,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:48:51,678 INFO L175 Difference]: Start difference. First operand has 552 places, 531 transitions, 5533 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:48:51,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 549 transitions, 6673 flow [2024-06-27 23:48:56,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 549 transitions, 6552 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:48:56,075 INFO L231 Difference]: Finished difference. Result has 553 places, 531 transitions, 5539 flow [2024-06-27 23:48:56,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5539, PETRI_PLACES=553, PETRI_TRANSITIONS=531} [2024-06-27 23:48:56,075 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 521 predicate places. [2024-06-27 23:48:56,075 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 531 transitions, 5539 flow [2024-06-27 23:48:56,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:56,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:56,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:56,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:48:56,076 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:56,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:56,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1589869205, now seen corresponding path program 5 times [2024-06-27 23:48:56,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628754074] [2024-06-27 23:48:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:56,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:58,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:58,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628754074] [2024-06-27 23:48:58,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628754074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:58,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:58,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:58,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715646402] [2024-06-27 23:48:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:58,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:58,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:48:58,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 531 transitions, 5539 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) [2024-06-27 23:48:58,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:58,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:48:58,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:59,062 INFO L124 PetriNetUnfolderBase]: 1104/1892 cut-off events. [2024-06-27 23:48:59,062 INFO L125 PetriNetUnfolderBase]: For 923221/923221 co-relation queries the response was YES. [2024-06-27 23:48:59,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18376 conditions, 1892 events. 1104/1892 cut-off events. For 923221/923221 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10385 event pairs, 163 based on Foata normal form. 1/1893 useless extension candidates. Maximal degree in co-relation 18125. Up to 1794 conditions per place. [2024-06-27 23:48:59,097 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 508 selfloop transitions, 40 changer transitions 0/550 dead transitions. [2024-06-27 23:48:59,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 550 transitions, 6685 flow [2024-06-27 23:48:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:48:59,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 23:48:59,098 INFO L175 Difference]: Start difference. First operand has 553 places, 531 transitions, 5539 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:48:59,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 550 transitions, 6685 flow [2024-06-27 23:49:03,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 550 transitions, 6554 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:03,741 INFO L231 Difference]: Finished difference. Result has 554 places, 531 transitions, 5493 flow [2024-06-27 23:49:03,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5408, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5493, PETRI_PLACES=554, PETRI_TRANSITIONS=531} [2024-06-27 23:49:03,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 522 predicate places. [2024-06-27 23:49:03,741 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 531 transitions, 5493 flow [2024-06-27 23:49:03,741 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) [2024-06-27 23:49:03,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:03,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:03,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:49:03,742 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1845458415, now seen corresponding path program 5 times [2024-06-27 23:49:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924618597] [2024-06-27 23:49:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:05,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:05,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924618597] [2024-06-27 23:49:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924618597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:05,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:05,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525541323] [2024-06-27 23:49:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:05,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:05,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:05,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 531 transitions, 5493 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:05,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:05,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:05,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:06,702 INFO L124 PetriNetUnfolderBase]: 1050/1833 cut-off events. [2024-06-27 23:49:06,702 INFO L125 PetriNetUnfolderBase]: For 919191/919192 co-relation queries the response was YES. [2024-06-27 23:49:06,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17649 conditions, 1833 events. 1050/1833 cut-off events. For 919191/919192 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10285 event pairs, 137 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 17398. Up to 1552 conditions per place. [2024-06-27 23:49:06,734 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 420 selfloop transitions, 53 changer transitions 0/550 dead transitions. [2024-06-27 23:49:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 550 transitions, 6487 flow [2024-06-27 23:49:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:49:06,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-27 23:49:06,735 INFO L175 Difference]: Start difference. First operand has 554 places, 531 transitions, 5493 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:49:06,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 550 transitions, 6487 flow [2024-06-27 23:49:11,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 550 transitions, 6385 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:11,110 INFO L231 Difference]: Finished difference. Result has 555 places, 531 transitions, 5503 flow [2024-06-27 23:49:11,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5503, PETRI_PLACES=555, PETRI_TRANSITIONS=531} [2024-06-27 23:49:11,110 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 523 predicate places. [2024-06-27 23:49:11,110 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 531 transitions, 5503 flow [2024-06-27 23:49:11,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:11,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:11,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:11,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:49:11,111 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:11,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1969196899, now seen corresponding path program 5 times [2024-06-27 23:49:11,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:11,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599755336] [2024-06-27 23:49:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:11,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:13,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599755336] [2024-06-27 23:49:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599755336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:13,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:13,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:13,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118888798] [2024-06-27 23:49:13,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:13,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:13,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:49:13,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 531 transitions, 5503 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:13,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:13,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:49:13,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:13,893 INFO L124 PetriNetUnfolderBase]: 1109/1901 cut-off events. [2024-06-27 23:49:13,893 INFO L125 PetriNetUnfolderBase]: For 919101/919101 co-relation queries the response was YES. [2024-06-27 23:49:13,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18285 conditions, 1901 events. 1109/1901 cut-off events. For 919101/919101 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10443 event pairs, 106 based on Foata normal form. 1/1902 useless extension candidates. Maximal degree in co-relation 18032. Up to 1466 conditions per place. [2024-06-27 23:49:13,926 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 185 changer transitions 0/552 dead transitions. [2024-06-27 23:49:13,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 552 transitions, 7123 flow [2024-06-27 23:49:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:49:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-27 23:49:13,927 INFO L175 Difference]: Start difference. First operand has 555 places, 531 transitions, 5503 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:49:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 552 transitions, 7123 flow [2024-06-27 23:49:18,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 552 transitions, 7003 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:18,510 INFO L231 Difference]: Finished difference. Result has 556 places, 535 transitions, 5824 flow [2024-06-27 23:49:18,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5385, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5824, PETRI_PLACES=556, PETRI_TRANSITIONS=535} [2024-06-27 23:49:18,510 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-27 23:49:18,510 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 535 transitions, 5824 flow [2024-06-27 23:49:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:18,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:18,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:18,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:49:18,510 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:18,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1387378545, now seen corresponding path program 6 times [2024-06-27 23:49:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060898810] [2024-06-27 23:49:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060898810] [2024-06-27 23:49:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060898810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:20,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:20,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:20,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199713943] [2024-06-27 23:49:20,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:20,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:20,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:20,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:20,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 535 transitions, 5824 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:20,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:20,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:20,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:21,416 INFO L124 PetriNetUnfolderBase]: 1062/1854 cut-off events. [2024-06-27 23:49:21,416 INFO L125 PetriNetUnfolderBase]: For 944466/944466 co-relation queries the response was YES. [2024-06-27 23:49:21,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18321 conditions, 1854 events. 1062/1854 cut-off events. For 944466/944466 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10426 event pairs, 123 based on Foata normal form. 2/1848 useless extension candidates. Maximal degree in co-relation 18067. Up to 1487 conditions per place. [2024-06-27 23:49:21,448 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 381 selfloop transitions, 93 changer transitions 0/553 dead transitions. [2024-06-27 23:49:21,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 553 transitions, 6838 flow [2024-06-27 23:49:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 23:49:21,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-27 23:49:21,449 INFO L175 Difference]: Start difference. First operand has 556 places, 535 transitions, 5824 flow. Second operand 11 states and 152 transitions. [2024-06-27 23:49:21,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 553 transitions, 6838 flow [2024-06-27 23:49:26,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 553 transitions, 6567 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:49:26,279 INFO L231 Difference]: Finished difference. Result has 560 places, 536 transitions, 5769 flow [2024-06-27 23:49:26,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5553, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5769, PETRI_PLACES=560, PETRI_TRANSITIONS=536} [2024-06-27 23:49:26,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 528 predicate places. [2024-06-27 23:49:26,280 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 536 transitions, 5769 flow [2024-06-27 23:49:26,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:26,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:26,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:26,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:49:26,280 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:26,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash 22879991, now seen corresponding path program 6 times [2024-06-27 23:49:26,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:26,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67217893] [2024-06-27 23:49:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67217893] [2024-06-27 23:49:28,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67217893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:28,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687457982] [2024-06-27 23:49:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:28,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:28,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:28,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:28,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:49:28,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 536 transitions, 5769 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:28,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:28,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:49:28,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:29,072 INFO L124 PetriNetUnfolderBase]: 1116/1914 cut-off events. [2024-06-27 23:49:29,072 INFO L125 PetriNetUnfolderBase]: For 928352/928352 co-relation queries the response was YES. [2024-06-27 23:49:29,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18738 conditions, 1914 events. 1116/1914 cut-off events. For 928352/928352 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10562 event pairs, 106 based on Foata normal form. 1/1915 useless extension candidates. Maximal degree in co-relation 18482. Up to 1500 conditions per place. [2024-06-27 23:49:29,107 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 185 changer transitions 0/554 dead transitions. [2024-06-27 23:49:29,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 554 transitions, 6933 flow [2024-06-27 23:49:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:49:29,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-27 23:49:29,108 INFO L175 Difference]: Start difference. First operand has 560 places, 536 transitions, 5769 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:49:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 554 transitions, 6933 flow [2024-06-27 23:49:34,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 554 transitions, 6727 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:34,021 INFO L231 Difference]: Finished difference. Result has 562 places, 538 transitions, 5965 flow [2024-06-27 23:49:34,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5965, PETRI_PLACES=562, PETRI_TRANSITIONS=538} [2024-06-27 23:49:34,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 530 predicate places. [2024-06-27 23:49:34,022 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 538 transitions, 5965 flow [2024-06-27 23:49:34,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:34,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:34,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:34,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:49:34,023 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:34,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash -573692255, now seen corresponding path program 1 times [2024-06-27 23:49:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785937992] [2024-06-27 23:49:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:35,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:35,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785937992] [2024-06-27 23:49:35,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785937992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:35,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:35,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760141205] [2024-06-27 23:49:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:35,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:49:35,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 538 transitions, 5965 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) [2024-06-27 23:49:35,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:35,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:49:35,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:36,753 INFO L124 PetriNetUnfolderBase]: 1127/1933 cut-off events. [2024-06-27 23:49:36,753 INFO L125 PetriNetUnfolderBase]: For 981881/981881 co-relation queries the response was YES. [2024-06-27 23:49:36,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19238 conditions, 1933 events. 1127/1933 cut-off events. For 981881/981881 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10677 event pairs, 109 based on Foata normal form. 2/1935 useless extension candidates. Maximal degree in co-relation 18981. Up to 1110 conditions per place. [2024-06-27 23:49:36,788 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 331 selfloop transitions, 232 changer transitions 0/565 dead transitions. [2024-06-27 23:49:36,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 565 transitions, 7625 flow [2024-06-27 23:49:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:36,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 23:49:36,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:49:36,797 INFO L175 Difference]: Start difference. First operand has 562 places, 538 transitions, 5965 flow. Second operand 12 states and 156 transitions. [2024-06-27 23:49:36,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 565 transitions, 7625 flow [2024-06-27 23:49:41,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 565 transitions, 7249 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:41,576 INFO L231 Difference]: Finished difference. Result has 565 places, 542 transitions, 6110 flow [2024-06-27 23:49:41,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5589, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6110, PETRI_PLACES=565, PETRI_TRANSITIONS=542} [2024-06-27 23:49:41,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2024-06-27 23:49:41,577 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 542 transitions, 6110 flow [2024-06-27 23:49:41,577 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) [2024-06-27 23:49:41,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:41,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:49:41,577 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:41,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -571320615, now seen corresponding path program 7 times [2024-06-27 23:49:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681594061] [2024-06-27 23:49:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:43,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681594061] [2024-06-27 23:49:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681594061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:43,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10536149] [2024-06-27 23:49:43,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:43,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:43,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:43,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:43,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:49:43,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 542 transitions, 6110 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) [2024-06-27 23:49:43,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:43,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:49:43,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:44,188 INFO L124 PetriNetUnfolderBase]: 1125/1929 cut-off events. [2024-06-27 23:49:44,188 INFO L125 PetriNetUnfolderBase]: For 946575/946575 co-relation queries the response was YES. [2024-06-27 23:49:44,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19274 conditions, 1929 events. 1125/1929 cut-off events. For 946575/946575 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10643 event pairs, 103 based on Foata normal form. 1/1930 useless extension candidates. Maximal degree in co-relation 19016. Up to 1515 conditions per place. [2024-06-27 23:49:44,223 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 190 changer transitions 0/558 dead transitions. [2024-06-27 23:49:44,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 558 transitions, 7262 flow [2024-06-27 23:49:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:49:44,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:49:44,224 INFO L175 Difference]: Start difference. First operand has 565 places, 542 transitions, 6110 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:49:44,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 558 transitions, 7262 flow [2024-06-27 23:49:49,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 558 transitions, 7071 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:49:49,281 INFO L231 Difference]: Finished difference. Result has 568 places, 542 transitions, 6307 flow [2024-06-27 23:49:49,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6307, PETRI_PLACES=568, PETRI_TRANSITIONS=542} [2024-06-27 23:49:49,281 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 536 predicate places. [2024-06-27 23:49:49,281 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 542 transitions, 6307 flow [2024-06-27 23:49:49,282 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) [2024-06-27 23:49:49,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:49,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:49,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:49:49,282 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -573699013, now seen corresponding path program 6 times [2024-06-27 23:49:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266048317] [2024-06-27 23:49:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:51,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266048317] [2024-06-27 23:49:51,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266048317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:51,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568326095] [2024-06-27 23:49:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:51,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:51,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:49:51,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 542 transitions, 6307 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) [2024-06-27 23:49:51,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:51,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:49:51,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:52,447 INFO L124 PetriNetUnfolderBase]: 1123/1926 cut-off events. [2024-06-27 23:49:52,447 INFO L125 PetriNetUnfolderBase]: For 933229/933229 co-relation queries the response was YES. [2024-06-27 23:49:52,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19342 conditions, 1926 events. 1123/1926 cut-off events. For 933229/933229 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10630 event pairs, 106 based on Foata normal form. 1/1927 useless extension candidates. Maximal degree in co-relation 19082. Up to 1197 conditions per place. [2024-06-27 23:49:52,483 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 372 selfloop transitions, 187 changer transitions 0/561 dead transitions. [2024-06-27 23:49:52,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 561 transitions, 7899 flow [2024-06-27 23:49:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:49:52,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-27 23:49:52,484 INFO L175 Difference]: Start difference. First operand has 568 places, 542 transitions, 6307 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:49:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 561 transitions, 7899 flow [2024-06-27 23:49:57,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 561 transitions, 7499 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:57,547 INFO L231 Difference]: Finished difference. Result has 569 places, 542 transitions, 6286 flow [2024-06-27 23:49:57,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6286, PETRI_PLACES=569, PETRI_TRANSITIONS=542} [2024-06-27 23:49:57,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 537 predicate places. [2024-06-27 23:49:57,548 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 542 transitions, 6286 flow [2024-06-27 23:49:57,548 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) [2024-06-27 23:49:57,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:57,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:57,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:49:57,548 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:57,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:57,550 INFO L85 PathProgramCache]: Analyzing trace with hash 349607973, now seen corresponding path program 7 times [2024-06-27 23:49:57,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:57,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177267717] [2024-06-27 23:49:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:57,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:59,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177267717] [2024-06-27 23:49:59,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177267717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:59,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:59,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456367605] [2024-06-27 23:49:59,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:59,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:00,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-06-27 23:50:00,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 542 transitions, 6286 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) [2024-06-27 23:50:00,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:00,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-06-27 23:50:00,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:00,888 INFO L124 PetriNetUnfolderBase]: 1121/1922 cut-off events. [2024-06-27 23:50:00,888 INFO L125 PetriNetUnfolderBase]: For 920399/920399 co-relation queries the response was YES. [2024-06-27 23:50:00,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19166 conditions, 1922 events. 1121/1922 cut-off events. For 920399/920399 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10587 event pairs, 163 based on Foata normal form. 1/1923 useless extension candidates. Maximal degree in co-relation 18906. Up to 1824 conditions per place. [2024-06-27 23:50:00,923 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 519 selfloop transitions, 39 changer transitions 0/560 dead transitions. [2024-06-27 23:50:00,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 560 transitions, 7450 flow [2024-06-27 23:50:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:50:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:50:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:50:00,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:50:00,924 INFO L175 Difference]: Start difference. First operand has 569 places, 542 transitions, 6286 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:50:00,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 560 transitions, 7450 flow [2024-06-27 23:50:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 560 transitions, 7052 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:50:06,964 INFO L231 Difference]: Finished difference. Result has 570 places, 542 transitions, 5971 flow [2024-06-27 23:50:06,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5971, PETRI_PLACES=570, PETRI_TRANSITIONS=542} [2024-06-27 23:50:06,965 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 538 predicate places. [2024-06-27 23:50:06,965 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 542 transitions, 5971 flow [2024-06-27 23:50:06,965 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) [2024-06-27 23:50:06,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:06,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:50:06,965 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash 989216449, now seen corresponding path program 2 times [2024-06-27 23:50:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:06,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731487293] [2024-06-27 23:50:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:06,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15