./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:16:25,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:16:26,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:16:26,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:16:26,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:16:26,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:16:26,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:16:26,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:16:26,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:16:26,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:16:26,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:16:26,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:16:26,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:16:26,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:16:26,097 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:16:26,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:16:26,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:16:26,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:16:26,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:16:26,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:16:26,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:16:26,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:16:26,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:16:26,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:16:26,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:16:26,099 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:16:26,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:16:26,099 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:16:26,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:16:26,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:16:26,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:16:26,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:16:26,102 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:16:26,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:16:26,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:16:26,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:16:26,339 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:16:26,340 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:16:26,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.opt.yml/witness.yml [2024-06-28 00:16:26,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:16:26,441 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:16:26,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-28 00:16:27,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:16:27,695 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:16:27,695 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-28 00:16:27,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493cb12f6/bbc77a0211384134bb2d4b06863ae356/FLAG50d441a81 [2024-06-28 00:16:27,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493cb12f6/bbc77a0211384134bb2d4b06863ae356 [2024-06-28 00:16:27,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:16:27,726 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:16:27,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:16:27,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:16:27,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:16:27,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:26" (1/2) ... [2024-06-28 00:16:27,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dab6be6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:16:27, skipping insertion in model container [2024-06-28 00:16:27,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:26" (1/2) ... [2024-06-28 00:16:27,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@507e101 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:16:27, skipping insertion in model container [2024-06-28 00:16:27,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:16:27" (2/2) ... [2024-06-28 00:16:27,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dab6be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:27, skipping insertion in model container [2024-06-28 00:16:27,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:16:27" (2/2) ... [2024-06-28 00:16:27,737 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:16:27,773 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:16:27,774 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:16:27,775 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:16:27,775 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd3) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-28 00:16:27,775 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:16:27,775 INFO L106 edCorrectnessWitness]: ghost_update [L839-L839] multithreaded = 1; [2024-06-28 00:16:27,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:16:28,127 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:16:28,136 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:16:28,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:16:28,334 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:16:28,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28 WrapperNode [2024-06-28 00:16:28,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:16:28,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:16:28,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:16:28,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:16:28,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,415 INFO L138 Inliner]: procedures = 175, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-06-28 00:16:28,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:16:28,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:16:28,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:16:28,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:16:28,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,463 INFO L175 MemorySlicer]: Split 25 memory accesses to 2 slices as follows [2, 23]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-28 00:16:28,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:16:28,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:16:28,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:16:28,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:16:28,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (1/1) ... [2024-06-28 00:16:28,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:16:28,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:16:28,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:16:28,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:16:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:16:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:16:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:16:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:16:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:16:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:16:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:16:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:16:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:16:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:16:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:16:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:16:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:16:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:16:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:16:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:16:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:16:28,583 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:16:28,730 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:16:28,732 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:16:29,327 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:16:29,328 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:16:29,529 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:16:29,529 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:16:29,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:16:29 BoogieIcfgContainer [2024-06-28 00:16:29,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:16:29,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:16:29,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:16:29,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:16:29,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:16:26" (1/4) ... [2024-06-28 00:16:29,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d686 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:16:29, skipping insertion in model container [2024-06-28 00:16:29,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:16:27" (2/4) ... [2024-06-28 00:16:29,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:16:29, skipping insertion in model container [2024-06-28 00:16:29,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:16:28" (3/4) ... [2024-06-28 00:16:29,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:16:29, skipping insertion in model container [2024-06-28 00:16:29,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:16:29" (4/4) ... [2024-06-28 00:16:29,539 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.opt.i [2024-06-28 00:16:29,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:16:29,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:16:29,553 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:16:29,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:16:29,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:16:29,679 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 00:16:29,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:16:29,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:16:29,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 00:16:29,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 00:16:29,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:16:29,695 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;@78d4db9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:16:29,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:16:29,698 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:16:29,698 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:16:29,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:16:29,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:29,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:16:29,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:29,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash 615194231, now seen corresponding path program 1 times [2024-06-28 00:16:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225945173] [2024-06-28 00:16:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:31,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225945173] [2024-06-28 00:16:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225945173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:31,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:16:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379768422] [2024-06-28 00:16:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:16:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:16:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:16:31,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2024-06-28 00:16:31,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:31,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:31,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2024-06-28 00:16:31,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:32,143 INFO L124 PetriNetUnfolderBase]: 1205/1833 cut-off events. [2024-06-28 00:16:32,143 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 00:16:32,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1833 events. 1205/1833 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8349 event pairs, 800 based on Foata normal form. 1/1800 useless extension candidates. Maximal degree in co-relation 3726. Up to 1818 conditions per place. [2024-06-28 00:16:32,155 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 35 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 00:16:32,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2024-06-28 00:16:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:16:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:16:32,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-06-28 00:16:32,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-06-28 00:16:32,165 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 66 transitions. [2024-06-28 00:16:32,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2024-06-28 00:16:32,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:16:32,169 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 00:16:32,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 00:16:32,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 00:16:32,173 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 00:16:32,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:32,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:32,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:32,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:16:32,174 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:32,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 627214339, now seen corresponding path program 1 times [2024-06-28 00:16:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:32,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044618350] [2024-06-28 00:16:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:32,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044618350] [2024-06-28 00:16:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044618350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:34,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:34,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:16:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162580568] [2024-06-28 00:16:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:34,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:16:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:34,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:16:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:16:34,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:34,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:34,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:34,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:34,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:34,671 INFO L124 PetriNetUnfolderBase]: 1454/2199 cut-off events. [2024-06-28 00:16:34,671 INFO L125 PetriNetUnfolderBase]: For 387/391 co-relation queries the response was YES. [2024-06-28 00:16:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5057 conditions, 2199 events. 1454/2199 cut-off events. For 387/391 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9905 event pairs, 628 based on Foata normal form. 10/2209 useless extension candidates. Maximal degree in co-relation 5045. Up to 2126 conditions per place. [2024-06-28 00:16:34,681 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 47 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 00:16:34,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 266 flow [2024-06-28 00:16:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:16:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:16:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-06-28 00:16:34,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2024-06-28 00:16:34,683 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 85 transitions. [2024-06-28 00:16:34,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 266 flow [2024-06-28 00:16:34,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:16:34,685 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-28 00:16:34,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 00:16:34,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 00:16:34,686 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-28 00:16:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:34,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:16:34,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:34,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash -149916992, now seen corresponding path program 1 times [2024-06-28 00:16:34,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:34,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866637069] [2024-06-28 00:16:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:34,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866637069] [2024-06-28 00:16:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866637069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660374786] [2024-06-28 00:16:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:38,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:38,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:38,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:38,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:38,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:38,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:38,849 INFO L124 PetriNetUnfolderBase]: 1445/2184 cut-off events. [2024-06-28 00:16:38,850 INFO L125 PetriNetUnfolderBase]: For 1101/1109 co-relation queries the response was YES. [2024-06-28 00:16:38,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 2184 events. 1445/2184 cut-off events. For 1101/1109 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9810 event pairs, 483 based on Foata normal form. 14/2198 useless extension candidates. Maximal degree in co-relation 5549. Up to 2073 conditions per place. [2024-06-28 00:16:38,861 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 52 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-28 00:16:38,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 326 flow [2024-06-28 00:16:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:16:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:16:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 00:16:38,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2024-06-28 00:16:38,864 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 5 states and 99 transitions. [2024-06-28 00:16:38,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 326 flow [2024-06-28 00:16:38,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:38,867 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 157 flow [2024-06-28 00:16:38,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-28 00:16:38,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-28 00:16:38,868 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 157 flow [2024-06-28 00:16:38,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:38,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:38,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:38,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:16:38,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:38,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1182207722, now seen corresponding path program 1 times [2024-06-28 00:16:38,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:38,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067203300] [2024-06-28 00:16:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:41,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067203300] [2024-06-28 00:16:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067203300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:16:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361675078] [2024-06-28 00:16:41,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:41,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:16:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:16:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:16:41,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 41 [2024-06-28 00:16:41,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:41,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:41,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 41 [2024-06-28 00:16:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:42,401 INFO L124 PetriNetUnfolderBase]: 1179/1793 cut-off events. [2024-06-28 00:16:42,402 INFO L125 PetriNetUnfolderBase]: For 1667/1667 co-relation queries the response was YES. [2024-06-28 00:16:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4952 conditions, 1793 events. 1179/1793 cut-off events. For 1667/1667 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8132 event pairs, 604 based on Foata normal form. 2/1794 useless extension candidates. Maximal degree in co-relation 4936. Up to 1767 conditions per place. [2024-06-28 00:16:42,410 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 43 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-28 00:16:42,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 319 flow [2024-06-28 00:16:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:16:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:16:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 00:16:42,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:16:42,414 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 157 flow. Second operand 5 states and 85 transitions. [2024-06-28 00:16:42,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 319 flow [2024-06-28 00:16:42,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 294 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:16:42,418 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 197 flow [2024-06-28 00:16:42,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 00:16:42,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-06-28 00:16:42,420 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 197 flow [2024-06-28 00:16:42,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:42,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:42,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:16:42,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:42,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:42,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2006268229, now seen corresponding path program 1 times [2024-06-28 00:16:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:42,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534997305] [2024-06-28 00:16:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:42,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:45,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534997305] [2024-06-28 00:16:45,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534997305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:45,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:45,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:16:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953985028] [2024-06-28 00:16:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:45,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:16:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:16:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:16:45,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:16:45,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:45,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:45,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:16:45,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:46,524 INFO L124 PetriNetUnfolderBase]: 1453/2218 cut-off events. [2024-06-28 00:16:46,525 INFO L125 PetriNetUnfolderBase]: For 3255/3255 co-relation queries the response was YES. [2024-06-28 00:16:46,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6445 conditions, 2218 events. 1453/2218 cut-off events. For 3255/3255 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10213 event pairs, 904 based on Foata normal form. 8/2226 useless extension candidates. Maximal degree in co-relation 6425. Up to 2077 conditions per place. [2024-06-28 00:16:46,537 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 66 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-28 00:16:46,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 86 transitions, 511 flow [2024-06-28 00:16:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:16:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:16:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 00:16:46,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 00:16:46,541 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 197 flow. Second operand 6 states and 106 transitions. [2024-06-28 00:16:46,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 86 transitions, 511 flow [2024-06-28 00:16:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 86 transitions, 486 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:46,549 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 316 flow [2024-06-28 00:16:46,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2024-06-28 00:16:46,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-28 00:16:46,551 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 316 flow [2024-06-28 00:16:46,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:46,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:46,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:16:46,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:46,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1393033384, now seen corresponding path program 1 times [2024-06-28 00:16:46,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473567588] [2024-06-28 00:16:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473567588] [2024-06-28 00:16:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473567588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:49,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:49,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:49,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109623043] [2024-06-28 00:16:49,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:49,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:49,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:49,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:49,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:49,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:16:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:16:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:50,411 INFO L124 PetriNetUnfolderBase]: 1492/2269 cut-off events. [2024-06-28 00:16:50,412 INFO L125 PetriNetUnfolderBase]: For 4989/4993 co-relation queries the response was YES. [2024-06-28 00:16:50,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7574 conditions, 2269 events. 1492/2269 cut-off events. For 4989/4993 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10292 event pairs, 702 based on Foata normal form. 10/2279 useless extension candidates. Maximal degree in co-relation 7548. Up to 2147 conditions per place. [2024-06-28 00:16:50,425 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 76 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-28 00:16:50,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 621 flow [2024-06-28 00:16:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:16:50,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:16:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 00:16:50,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 00:16:50,428 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 316 flow. Second operand 6 states and 111 transitions. [2024-06-28 00:16:50,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 621 flow [2024-06-28 00:16:50,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 617 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:16:50,435 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 415 flow [2024-06-28 00:16:50,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-06-28 00:16:50,437 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-28 00:16:50,437 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 415 flow [2024-06-28 00:16:50,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:50,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:50,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:50,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:16:50,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:50,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1504508932, now seen corresponding path program 1 times [2024-06-28 00:16:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:50,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838342549] [2024-06-28 00:16:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838342549] [2024-06-28 00:16:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838342549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:53,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181751648] [2024-06-28 00:16:53,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:53,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:53,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:53,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:53,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:53,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:16:53,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:53,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:53,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:16:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:55,069 INFO L124 PetriNetUnfolderBase]: 1610/2440 cut-off events. [2024-06-28 00:16:55,069 INFO L125 PetriNetUnfolderBase]: For 8941/8941 co-relation queries the response was YES. [2024-06-28 00:16:55,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 2440 events. 1610/2440 cut-off events. For 8941/8941 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11243 event pairs, 793 based on Foata normal form. 8/2448 useless extension candidates. Maximal degree in co-relation 9073. Up to 2172 conditions per place. [2024-06-28 00:16:55,089 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 68 selfloop transitions, 35 changer transitions 0/106 dead transitions. [2024-06-28 00:16:55,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 106 transitions, 791 flow [2024-06-28 00:16:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:16:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:16:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:16:55,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:16:55,091 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 415 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:16:55,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 106 transitions, 791 flow [2024-06-28 00:16:55,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 748 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:55,099 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 574 flow [2024-06-28 00:16:55,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-06-28 00:16:55,100 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 00:16:55,100 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 574 flow [2024-06-28 00:16:55,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:55,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:55,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:55,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:16:55,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:55,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1504508746, now seen corresponding path program 2 times [2024-06-28 00:16:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80420723] [2024-06-28 00:16:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80420723] [2024-06-28 00:16:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80420723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:16:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242101944] [2024-06-28 00:16:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:16:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:16:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:16:57,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:16:57,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 574 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:57,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:57,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:16:57,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:58,919 INFO L124 PetriNetUnfolderBase]: 1600/2422 cut-off events. [2024-06-28 00:16:58,919 INFO L125 PetriNetUnfolderBase]: For 11548/11548 co-relation queries the response was YES. [2024-06-28 00:16:58,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 2422 events. 1600/2422 cut-off events. For 11548/11548 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11191 event pairs, 860 based on Foata normal form. 4/2426 useless extension candidates. Maximal degree in co-relation 10101. Up to 2320 conditions per place. [2024-06-28 00:16:58,933 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 82 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 00:16:58,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 101 transitions, 850 flow [2024-06-28 00:16:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:16:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:16:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 00:16:58,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-06-28 00:16:58,935 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 574 flow. Second operand 7 states and 105 transitions. [2024-06-28 00:16:58,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 101 transitions, 850 flow [2024-06-28 00:16:58,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 806 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:16:58,947 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 608 flow [2024-06-28 00:16:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=608, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-28 00:16:58,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-28 00:16:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 608 flow [2024-06-28 00:16:58,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:58,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:58,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:16:58,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1183722192, now seen corresponding path program 2 times [2024-06-28 00:16:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323178814] [2024-06-28 00:16:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:58,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:02,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:02,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:02,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323178814] [2024-06-28 00:17:02,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323178814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:02,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:02,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:02,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157411768] [2024-06-28 00:17:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:02,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:02,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:02,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:02,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:03,481 INFO L124 PetriNetUnfolderBase]: 1650/2492 cut-off events. [2024-06-28 00:17:03,482 INFO L125 PetriNetUnfolderBase]: For 14393/14393 co-relation queries the response was YES. [2024-06-28 00:17:03,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2492 events. 1650/2492 cut-off events. For 14393/14393 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11547 event pairs, 798 based on Foata normal form. 8/2500 useless extension candidates. Maximal degree in co-relation 10775. Up to 2078 conditions per place. [2024-06-28 00:17:03,495 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 81 selfloop transitions, 45 changer transitions 0/129 dead transitions. [2024-06-28 00:17:03,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 129 transitions, 1106 flow [2024-06-28 00:17:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 00:17:03,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-28 00:17:03,522 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 608 flow. Second operand 7 states and 128 transitions. [2024-06-28 00:17:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 129 transitions, 1106 flow [2024-06-28 00:17:03,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 129 transitions, 1052 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:03,540 INFO L231 Difference]: Finished difference. Result has 80 places, 96 transitions, 818 flow [2024-06-28 00:17:03,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=818, PETRI_PLACES=80, PETRI_TRANSITIONS=96} [2024-06-28 00:17:03,541 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-28 00:17:03,541 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 96 transitions, 818 flow [2024-06-28 00:17:03,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:03,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:03,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:17:03,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:03,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -416484508, now seen corresponding path program 1 times [2024-06-28 00:17:03,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195226697] [2024-06-28 00:17:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:07,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195226697] [2024-06-28 00:17:07,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195226697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:07,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:07,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:17:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219572968] [2024-06-28 00:17:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:07,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:17:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:07,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:17:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:17:07,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:07,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 96 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:07,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:07,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:07,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:08,657 INFO L124 PetriNetUnfolderBase]: 1702/2580 cut-off events. [2024-06-28 00:17:08,657 INFO L125 PetriNetUnfolderBase]: For 19303/19303 co-relation queries the response was YES. [2024-06-28 00:17:08,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12049 conditions, 2580 events. 1702/2580 cut-off events. For 19303/19303 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12119 event pairs, 876 based on Foata normal form. 16/2596 useless extension candidates. Maximal degree in co-relation 12009. Up to 2346 conditions per place. [2024-06-28 00:17:08,669 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 112 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2024-06-28 00:17:08,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 1255 flow [2024-06-28 00:17:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:17:08,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39939024390243905 [2024-06-28 00:17:08,671 INFO L175 Difference]: Start difference. First operand has 80 places, 96 transitions, 818 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:17:08,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 1255 flow [2024-06-28 00:17:08,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 1223 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-28 00:17:08,683 INFO L231 Difference]: Finished difference. Result has 87 places, 98 transitions, 868 flow [2024-06-28 00:17:08,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=868, PETRI_PLACES=87, PETRI_TRANSITIONS=98} [2024-06-28 00:17:08,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 00:17:08,684 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 98 transitions, 868 flow [2024-06-28 00:17:08,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:08,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:08,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:08,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:17:08,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:08,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:08,685 INFO L85 PathProgramCache]: Analyzing trace with hash 234363891, now seen corresponding path program 1 times [2024-06-28 00:17:08,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601535188] [2024-06-28 00:17:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:08,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:12,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601535188] [2024-06-28 00:17:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601535188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:12,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:12,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:12,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527071015] [2024-06-28 00:17:12,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:12,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:12,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:12,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 98 transitions, 868 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:12,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:12,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:12,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:13,661 INFO L124 PetriNetUnfolderBase]: 2004/2994 cut-off events. [2024-06-28 00:17:13,661 INFO L125 PetriNetUnfolderBase]: For 21822/21826 co-relation queries the response was YES. [2024-06-28 00:17:13,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13773 conditions, 2994 events. 2004/2994 cut-off events. For 21822/21826 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14114 event pairs, 697 based on Foata normal form. 25/3019 useless extension candidates. Maximal degree in co-relation 13730. Up to 2554 conditions per place. [2024-06-28 00:17:13,679 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 128 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2024-06-28 00:17:13,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 1602 flow [2024-06-28 00:17:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 00:17:13,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2024-06-28 00:17:13,685 INFO L175 Difference]: Start difference. First operand has 87 places, 98 transitions, 868 flow. Second operand 10 states and 182 transitions. [2024-06-28 00:17:13,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 1602 flow [2024-06-28 00:17:13,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 174 transitions, 1544 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:13,703 INFO L231 Difference]: Finished difference. Result has 94 places, 121 transitions, 1134 flow [2024-06-28 00:17:13,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1134, PETRI_PLACES=94, PETRI_TRANSITIONS=121} [2024-06-28 00:17:13,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-28 00:17:13,704 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 121 transitions, 1134 flow [2024-06-28 00:17:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:13,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:13,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:13,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:17:13,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:13,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1020451633, now seen corresponding path program 2 times [2024-06-28 00:17:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36453932] [2024-06-28 00:17:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:13,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:16,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36453932] [2024-06-28 00:17:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36453932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62971759] [2024-06-28 00:17:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:16,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:16,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 121 transitions, 1134 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:16,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:16,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:16,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:18,495 INFO L124 PetriNetUnfolderBase]: 2280/3394 cut-off events. [2024-06-28 00:17:18,496 INFO L125 PetriNetUnfolderBase]: For 33256/33256 co-relation queries the response was YES. [2024-06-28 00:17:18,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18299 conditions, 3394 events. 2280/3394 cut-off events. For 33256/33256 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16367 event pairs, 853 based on Foata normal form. 16/3410 useless extension candidates. Maximal degree in co-relation 18254. Up to 2797 conditions per place. [2024-06-28 00:17:18,517 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 128 selfloop transitions, 41 changer transitions 0/172 dead transitions. [2024-06-28 00:17:18,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 172 transitions, 1824 flow [2024-06-28 00:17:18,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:17:18,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951219512195122 [2024-06-28 00:17:18,519 INFO L175 Difference]: Start difference. First operand has 94 places, 121 transitions, 1134 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:17:18,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 172 transitions, 1824 flow [2024-06-28 00:17:18,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 172 transitions, 1716 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:18,559 INFO L231 Difference]: Finished difference. Result has 102 places, 129 transitions, 1226 flow [2024-06-28 00:17:18,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1226, PETRI_PLACES=102, PETRI_TRANSITIONS=129} [2024-06-28 00:17:18,560 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-28 00:17:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 129 transitions, 1226 flow [2024-06-28 00:17:18,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:18,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:18,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:17:18,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:18,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1020446053, now seen corresponding path program 3 times [2024-06-28 00:17:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:18,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79961521] [2024-06-28 00:17:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:21,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:21,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79961521] [2024-06-28 00:17:21,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79961521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:21,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485831008] [2024-06-28 00:17:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:21,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:21,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:21,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 129 transitions, 1226 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:21,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:21,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:21,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:23,355 INFO L124 PetriNetUnfolderBase]: 2316/3446 cut-off events. [2024-06-28 00:17:23,355 INFO L125 PetriNetUnfolderBase]: For 37915/37915 co-relation queries the response was YES. [2024-06-28 00:17:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19280 conditions, 3446 events. 2316/3446 cut-off events. For 37915/37915 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16637 event pairs, 819 based on Foata normal form. 16/3462 useless extension candidates. Maximal degree in co-relation 19231. Up to 2825 conditions per place. [2024-06-28 00:17:23,377 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 133 selfloop transitions, 49 changer transitions 0/185 dead transitions. [2024-06-28 00:17:23,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 185 transitions, 1915 flow [2024-06-28 00:17:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:17:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:17:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 00:17:23,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-28 00:17:23,379 INFO L175 Difference]: Start difference. First operand has 102 places, 129 transitions, 1226 flow. Second operand 12 states and 192 transitions. [2024-06-28 00:17:23,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 185 transitions, 1915 flow [2024-06-28 00:17:23,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 185 transitions, 1813 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:23,412 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 1294 flow [2024-06-28 00:17:23,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1294, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-06-28 00:17:23,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-06-28 00:17:23,413 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 1294 flow [2024-06-28 00:17:23,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:23,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:23,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:17:23,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:23,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:23,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1959319473, now seen corresponding path program 4 times [2024-06-28 00:17:23,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763312107] [2024-06-28 00:17:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:26,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763312107] [2024-06-28 00:17:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763312107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134150584] [2024-06-28 00:17:26,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:26,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:26,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:26,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:26,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:26,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:26,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:28,675 INFO L124 PetriNetUnfolderBase]: 2512/3718 cut-off events. [2024-06-28 00:17:28,675 INFO L125 PetriNetUnfolderBase]: For 43330/43330 co-relation queries the response was YES. [2024-06-28 00:17:28,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21112 conditions, 3718 events. 2512/3718 cut-off events. For 43330/43330 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17992 event pairs, 805 based on Foata normal form. 16/3734 useless extension candidates. Maximal degree in co-relation 21061. Up to 2661 conditions per place. [2024-06-28 00:17:28,708 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 130 selfloop transitions, 70 changer transitions 0/203 dead transitions. [2024-06-28 00:17:28,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 203 transitions, 2186 flow [2024-06-28 00:17:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 00:17:28,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42350332594235035 [2024-06-28 00:17:28,711 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 1294 flow. Second operand 11 states and 191 transitions. [2024-06-28 00:17:28,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 203 transitions, 2186 flow [2024-06-28 00:17:28,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 203 transitions, 2042 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 00:17:28,806 INFO L231 Difference]: Finished difference. Result has 110 places, 144 transitions, 1463 flow [2024-06-28 00:17:28,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1463, PETRI_PLACES=110, PETRI_TRANSITIONS=144} [2024-06-28 00:17:28,807 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 00:17:28,807 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 144 transitions, 1463 flow [2024-06-28 00:17:28,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:28,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:28,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:28,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:17:28,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:28,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1162249072, now seen corresponding path program 1 times [2024-06-28 00:17:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:28,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324940689] [2024-06-28 00:17:28,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:28,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324940689] [2024-06-28 00:17:30,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324940689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:30,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:17:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571128877] [2024-06-28 00:17:30,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:30,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:17:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:17:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:17:30,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:30,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 144 transitions, 1463 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:30,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:30,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:30,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:31,594 INFO L124 PetriNetUnfolderBase]: 2440/3622 cut-off events. [2024-06-28 00:17:31,594 INFO L125 PetriNetUnfolderBase]: For 47467/47473 co-relation queries the response was YES. [2024-06-28 00:17:31,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21141 conditions, 3622 events. 2440/3622 cut-off events. For 47467/47473 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17629 event pairs, 1104 based on Foata normal form. 14/3636 useless extension candidates. Maximal degree in co-relation 21088. Up to 3495 conditions per place. [2024-06-28 00:17:31,618 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 138 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2024-06-28 00:17:31,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 159 transitions, 1834 flow [2024-06-28 00:17:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:17:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:17:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 00:17:31,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:17:31,623 INFO L175 Difference]: Start difference. First operand has 110 places, 144 transitions, 1463 flow. Second operand 5 states and 85 transitions. [2024-06-28 00:17:31,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 159 transitions, 1834 flow [2024-06-28 00:17:31,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 1648 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:31,680 INFO L231 Difference]: Finished difference. Result has 110 places, 146 transitions, 1353 flow [2024-06-28 00:17:31,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1353, PETRI_PLACES=110, PETRI_TRANSITIONS=146} [2024-06-28 00:17:31,682 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 00:17:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 146 transitions, 1353 flow [2024-06-28 00:17:31,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:31,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:31,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:17:31,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:31,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash -508738487, now seen corresponding path program 1 times [2024-06-28 00:17:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:31,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616189164] [2024-06-28 00:17:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616189164] [2024-06-28 00:17:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616189164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850484598] [2024-06-28 00:17:36,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:36,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:36,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:36,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 146 transitions, 1353 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:36,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:36,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:36,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:37,352 INFO L124 PetriNetUnfolderBase]: 2460/3634 cut-off events. [2024-06-28 00:17:37,353 INFO L125 PetriNetUnfolderBase]: For 46991/46999 co-relation queries the response was YES. [2024-06-28 00:17:37,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20699 conditions, 3634 events. 2460/3634 cut-off events. For 46991/46999 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17520 event pairs, 784 based on Foata normal form. 12/3646 useless extension candidates. Maximal degree in co-relation 20643. Up to 3440 conditions per place. [2024-06-28 00:17:37,376 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 160 selfloop transitions, 20 changer transitions 0/183 dead transitions. [2024-06-28 00:17:37,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 183 transitions, 1851 flow [2024-06-28 00:17:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:17:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:17:37,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 00:17:37,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:17:37,378 INFO L175 Difference]: Start difference. First operand has 110 places, 146 transitions, 1353 flow. Second operand 7 states and 123 transitions. [2024-06-28 00:17:37,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 183 transitions, 1851 flow [2024-06-28 00:17:37,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 183 transitions, 1822 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 00:17:37,424 INFO L231 Difference]: Finished difference. Result has 115 places, 148 transitions, 1423 flow [2024-06-28 00:17:37,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1423, PETRI_PLACES=115, PETRI_TRANSITIONS=148} [2024-06-28 00:17:37,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-28 00:17:37,424 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 148 transitions, 1423 flow [2024-06-28 00:17:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:37,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:37,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:37,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:17:37,425 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:37,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1569047835, now seen corresponding path program 1 times [2024-06-28 00:17:37,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:37,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714705090] [2024-06-28 00:17:37,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:41,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714705090] [2024-06-28 00:17:41,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714705090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:41,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:41,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117833618] [2024-06-28 00:17:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:41,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:41,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:41,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:41,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 148 transitions, 1423 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:41,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:41,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:41,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:43,618 INFO L124 PetriNetUnfolderBase]: 2540/3770 cut-off events. [2024-06-28 00:17:43,618 INFO L125 PetriNetUnfolderBase]: For 52174/52174 co-relation queries the response was YES. [2024-06-28 00:17:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21412 conditions, 3770 events. 2540/3770 cut-off events. For 52174/52174 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18423 event pairs, 873 based on Foata normal form. 16/3786 useless extension candidates. Maximal degree in co-relation 21355. Up to 3359 conditions per place. [2024-06-28 00:17:43,642 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 144 selfloop transitions, 41 changer transitions 0/188 dead transitions. [2024-06-28 00:17:43,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 188 transitions, 2033 flow [2024-06-28 00:17:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 00:17:43,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-28 00:17:43,644 INFO L175 Difference]: Start difference. First operand has 115 places, 148 transitions, 1423 flow. Second operand 9 states and 150 transitions. [2024-06-28 00:17:43,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 188 transitions, 2033 flow [2024-06-28 00:17:43,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1960 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:17:43,696 INFO L231 Difference]: Finished difference. Result has 119 places, 150 transitions, 1486 flow [2024-06-28 00:17:43,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1486, PETRI_PLACES=119, PETRI_TRANSITIONS=150} [2024-06-28 00:17:43,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-28 00:17:43,697 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 150 transitions, 1486 flow [2024-06-28 00:17:43,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:43,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:43,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:43,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:17:43,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:43,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1571016471, now seen corresponding path program 2 times [2024-06-28 00:17:43,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223792590] [2024-06-28 00:17:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:43,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223792590] [2024-06-28 00:17:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223792590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935752993] [2024-06-28 00:17:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:47,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:47,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 150 transitions, 1486 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:47,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:47,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:47,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:49,183 INFO L124 PetriNetUnfolderBase]: 2532/3758 cut-off events. [2024-06-28 00:17:49,183 INFO L125 PetriNetUnfolderBase]: For 54284/54284 co-relation queries the response was YES. [2024-06-28 00:17:49,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21790 conditions, 3758 events. 2532/3758 cut-off events. For 54284/54284 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18458 event pairs, 1067 based on Foata normal form. 4/3762 useless extension candidates. Maximal degree in co-relation 21731. Up to 3633 conditions per place. [2024-06-28 00:17:49,215 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 154 selfloop transitions, 20 changer transitions 0/177 dead transitions. [2024-06-28 00:17:49,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 177 transitions, 1948 flow [2024-06-28 00:17:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2024-06-28 00:17:49,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628048780487805 [2024-06-28 00:17:49,217 INFO L175 Difference]: Start difference. First operand has 119 places, 150 transitions, 1486 flow. Second operand 8 states and 119 transitions. [2024-06-28 00:17:49,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 177 transitions, 1948 flow [2024-06-28 00:17:49,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 177 transitions, 1846 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:49,295 INFO L231 Difference]: Finished difference. Result has 120 places, 152 transitions, 1483 flow [2024-06-28 00:17:49,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1483, PETRI_PLACES=120, PETRI_TRANSITIONS=152} [2024-06-28 00:17:49,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 78 predicate places. [2024-06-28 00:17:49,296 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 152 transitions, 1483 flow [2024-06-28 00:17:49,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:49,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:49,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:49,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:17:49,297 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:49,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 896194277, now seen corresponding path program 2 times [2024-06-28 00:17:49,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115249413] [2024-06-28 00:17:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115249413] [2024-06-28 00:17:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115249413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:53,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:17:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023123525] [2024-06-28 00:17:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:53,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:17:53,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:53,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:17:53,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:17:53,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:17:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 152 transitions, 1483 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:17:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:55,230 INFO L124 PetriNetUnfolderBase]: 2596/3858 cut-off events. [2024-06-28 00:17:55,231 INFO L125 PetriNetUnfolderBase]: For 61396/61396 co-relation queries the response was YES. [2024-06-28 00:17:55,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22257 conditions, 3858 events. 2596/3858 cut-off events. For 61396/61396 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 18900 event pairs, 842 based on Foata normal form. 16/3874 useless extension candidates. Maximal degree in co-relation 22197. Up to 3407 conditions per place. [2024-06-28 00:17:55,258 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 148 selfloop transitions, 47 changer transitions 0/198 dead transitions. [2024-06-28 00:17:55,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 198 transitions, 2189 flow [2024-06-28 00:17:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 00:17:55,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:17:55,260 INFO L175 Difference]: Start difference. First operand has 120 places, 152 transitions, 1483 flow. Second operand 9 states and 153 transitions. [2024-06-28 00:17:55,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 198 transitions, 2189 flow [2024-06-28 00:17:55,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 2108 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:55,330 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1552 flow [2024-06-28 00:17:55,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1552, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-06-28 00:17:55,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-06-28 00:17:55,330 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1552 flow [2024-06-28 00:17:55,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:55,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:55,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:17:55,331 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:55,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -809599261, now seen corresponding path program 3 times [2024-06-28 00:17:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003211446] [2024-06-28 00:17:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:01,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003211446] [2024-06-28 00:18:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003211446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:01,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:01,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:18:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642509712] [2024-06-28 00:18:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:18:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:18:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:18:01,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:01,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1552 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:01,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:01,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:01,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:03,566 INFO L124 PetriNetUnfolderBase]: 2704/4022 cut-off events. [2024-06-28 00:18:03,566 INFO L125 PetriNetUnfolderBase]: For 69369/69369 co-relation queries the response was YES. [2024-06-28 00:18:03,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23626 conditions, 4022 events. 2704/4022 cut-off events. For 69369/69369 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19928 event pairs, 818 based on Foata normal form. 16/4038 useless extension candidates. Maximal degree in co-relation 23565. Up to 3223 conditions per place. [2024-06-28 00:18:03,593 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 150 selfloop transitions, 53 changer transitions 0/206 dead transitions. [2024-06-28 00:18:03,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 206 transitions, 2364 flow [2024-06-28 00:18:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:18:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:18:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 00:18:03,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 00:18:03,595 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1552 flow. Second operand 9 states and 157 transitions. [2024-06-28 00:18:03,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 206 transitions, 2364 flow [2024-06-28 00:18:03,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 206 transitions, 2238 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:03,657 INFO L231 Difference]: Finished difference. Result has 125 places, 157 transitions, 1603 flow [2024-06-28 00:18:03,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=125, PETRI_TRANSITIONS=157} [2024-06-28 00:18:03,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-28 00:18:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 157 transitions, 1603 flow [2024-06-28 00:18:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:03,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:03,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:18:03,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash -317832922, now seen corresponding path program 1 times [2024-06-28 00:18:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442254565] [2024-06-28 00:18:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:07,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:07,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442254565] [2024-06-28 00:18:07,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442254565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011907283] [2024-06-28 00:18:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:07,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:07,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:07,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:07,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 157 transitions, 1603 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:07,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:07,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:07,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:09,718 INFO L124 PetriNetUnfolderBase]: 2961/4409 cut-off events. [2024-06-28 00:18:09,718 INFO L125 PetriNetUnfolderBase]: For 84409/84417 co-relation queries the response was YES. [2024-06-28 00:18:09,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26253 conditions, 4409 events. 2961/4409 cut-off events. For 84409/84417 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22409 event pairs, 787 based on Foata normal form. 24/4433 useless extension candidates. Maximal degree in co-relation 26191. Up to 3785 conditions per place. [2024-06-28 00:18:09,751 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 185 selfloop transitions, 47 changer transitions 0/235 dead transitions. [2024-06-28 00:18:09,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 235 transitions, 2635 flow [2024-06-28 00:18:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 00:18:09,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44789356984478934 [2024-06-28 00:18:09,752 INFO L175 Difference]: Start difference. First operand has 125 places, 157 transitions, 1603 flow. Second operand 11 states and 202 transitions. [2024-06-28 00:18:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 235 transitions, 2635 flow [2024-06-28 00:18:09,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 235 transitions, 2535 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:09,843 INFO L231 Difference]: Finished difference. Result has 133 places, 169 transitions, 1775 flow [2024-06-28 00:18:09,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1775, PETRI_PLACES=133, PETRI_TRANSITIONS=169} [2024-06-28 00:18:09,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-28 00:18:09,843 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 169 transitions, 1775 flow [2024-06-28 00:18:09,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:09,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:09,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:18:09,844 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:09,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash 211232632, now seen corresponding path program 1 times [2024-06-28 00:18:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:09,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154271546] [2024-06-28 00:18:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:14,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:14,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154271546] [2024-06-28 00:18:14,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154271546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:14,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995048266] [2024-06-28 00:18:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:14,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:14,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:14,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 169 transitions, 1775 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:14,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:14,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:14,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:16,884 INFO L124 PetriNetUnfolderBase]: 3397/5133 cut-off events. [2024-06-28 00:18:16,884 INFO L125 PetriNetUnfolderBase]: For 119453/119459 co-relation queries the response was YES. [2024-06-28 00:18:16,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32331 conditions, 5133 events. 3397/5133 cut-off events. For 119453/119459 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 27272 event pairs, 1096 based on Foata normal form. 86/5219 useless extension candidates. Maximal degree in co-relation 32266. Up to 4060 conditions per place. [2024-06-28 00:18:16,923 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 183 selfloop transitions, 44 changer transitions 0/230 dead transitions. [2024-06-28 00:18:16,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 230 transitions, 2758 flow [2024-06-28 00:18:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 00:18:16,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170731707317073 [2024-06-28 00:18:16,925 INFO L175 Difference]: Start difference. First operand has 133 places, 169 transitions, 1775 flow. Second operand 10 states and 171 transitions. [2024-06-28 00:18:16,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 230 transitions, 2758 flow [2024-06-28 00:18:17,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 230 transitions, 2605 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 00:18:17,045 INFO L231 Difference]: Finished difference. Result has 137 places, 175 transitions, 1863 flow [2024-06-28 00:18:17,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1863, PETRI_PLACES=137, PETRI_TRANSITIONS=175} [2024-06-28 00:18:17,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 00:18:17,046 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 175 transitions, 1863 flow [2024-06-28 00:18:17,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:17,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:17,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:17,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:18:17,046 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:17,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash 206466010, now seen corresponding path program 2 times [2024-06-28 00:18:17,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729111466] [2024-06-28 00:18:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:22,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729111466] [2024-06-28 00:18:22,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729111466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:22,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:22,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:22,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399986744] [2024-06-28 00:18:22,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:22,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:22,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 175 transitions, 1863 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:22,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:22,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:22,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:24,486 INFO L124 PetriNetUnfolderBase]: 4490/6915 cut-off events. [2024-06-28 00:18:24,487 INFO L125 PetriNetUnfolderBase]: For 159517/159523 co-relation queries the response was YES. [2024-06-28 00:18:24,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43601 conditions, 6915 events. 4490/6915 cut-off events. For 159517/159523 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 39897 event pairs, 1374 based on Foata normal form. 70/6985 useless extension candidates. Maximal degree in co-relation 43533. Up to 4381 conditions per place. [2024-06-28 00:18:24,541 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 203 selfloop transitions, 56 changer transitions 0/262 dead transitions. [2024-06-28 00:18:24,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 262 transitions, 3279 flow [2024-06-28 00:18:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 00:18:24,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43458980044345896 [2024-06-28 00:18:24,550 INFO L175 Difference]: Start difference. First operand has 137 places, 175 transitions, 1863 flow. Second operand 11 states and 196 transitions. [2024-06-28 00:18:24,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 262 transitions, 3279 flow [2024-06-28 00:18:24,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 262 transitions, 3139 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:24,787 INFO L231 Difference]: Finished difference. Result has 141 places, 190 transitions, 2138 flow [2024-06-28 00:18:24,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2138, PETRI_PLACES=141, PETRI_TRANSITIONS=190} [2024-06-28 00:18:24,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 00:18:24,788 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 190 transitions, 2138 flow [2024-06-28 00:18:24,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:24,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:24,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:24,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:18:24,789 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:24,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1456714576, now seen corresponding path program 2 times [2024-06-28 00:18:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:24,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497599530] [2024-06-28 00:18:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:29,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:29,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497599530] [2024-06-28 00:18:29,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497599530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:29,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:29,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767297612] [2024-06-28 00:18:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:29,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:29,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:29,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:29,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:29,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 190 transitions, 2138 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:29,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:29,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:29,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:32,342 INFO L124 PetriNetUnfolderBase]: 4846/7524 cut-off events. [2024-06-28 00:18:32,343 INFO L125 PetriNetUnfolderBase]: For 190320/190320 co-relation queries the response was YES. [2024-06-28 00:18:32,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48436 conditions, 7524 events. 4846/7524 cut-off events. For 190320/190320 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 44831 event pairs, 2146 based on Foata normal form. 80/7604 useless extension candidates. Maximal degree in co-relation 48366. Up to 6289 conditions per place. [2024-06-28 00:18:32,409 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 196 selfloop transitions, 47 changer transitions 0/246 dead transitions. [2024-06-28 00:18:32,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 246 transitions, 3126 flow [2024-06-28 00:18:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:32,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 00:18:32,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035476718403548 [2024-06-28 00:18:32,411 INFO L175 Difference]: Start difference. First operand has 141 places, 190 transitions, 2138 flow. Second operand 11 states and 182 transitions. [2024-06-28 00:18:32,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 246 transitions, 3126 flow [2024-06-28 00:18:32,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 246 transitions, 3019 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:32,663 INFO L231 Difference]: Finished difference. Result has 145 places, 191 transitions, 2179 flow [2024-06-28 00:18:32,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2179, PETRI_PLACES=145, PETRI_TRANSITIONS=191} [2024-06-28 00:18:32,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 00:18:32,664 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 191 transitions, 2179 flow [2024-06-28 00:18:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:32,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:32,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:32,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:18:32,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:32,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:32,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1451150386, now seen corresponding path program 3 times [2024-06-28 00:18:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:32,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490590535] [2024-06-28 00:18:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:32,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490590535] [2024-06-28 00:18:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490590535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:18:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545885904] [2024-06-28 00:18:36,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:36,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:18:36,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:36,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:18:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:18:36,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:36,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 191 transitions, 2179 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:36,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:36,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:36,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:39,615 INFO L124 PetriNetUnfolderBase]: 5202/8120 cut-off events. [2024-06-28 00:18:39,616 INFO L125 PetriNetUnfolderBase]: For 206148/206148 co-relation queries the response was YES. [2024-06-28 00:18:39,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51685 conditions, 8120 events. 5202/8120 cut-off events. For 206148/206148 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 49514 event pairs, 2301 based on Foata normal form. 80/8200 useless extension candidates. Maximal degree in co-relation 51613. Up to 6885 conditions per place. [2024-06-28 00:18:39,685 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 203 selfloop transitions, 52 changer transitions 0/258 dead transitions. [2024-06-28 00:18:39,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 258 transitions, 3287 flow [2024-06-28 00:18:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:18:39,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:18:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-28 00:18:39,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399624765478424 [2024-06-28 00:18:39,686 INFO L175 Difference]: Start difference. First operand has 145 places, 191 transitions, 2179 flow. Second operand 13 states and 213 transitions. [2024-06-28 00:18:39,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 258 transitions, 3287 flow [2024-06-28 00:18:39,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 258 transitions, 3165 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 00:18:39,921 INFO L231 Difference]: Finished difference. Result has 149 places, 192 transitions, 2217 flow [2024-06-28 00:18:39,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2217, PETRI_PLACES=149, PETRI_TRANSITIONS=192} [2024-06-28 00:18:39,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-06-28 00:18:39,922 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 192 transitions, 2217 flow [2024-06-28 00:18:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:39,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:39,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:18:39,923 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:39,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1451142946, now seen corresponding path program 4 times [2024-06-28 00:18:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497419064] [2024-06-28 00:18:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497419064] [2024-06-28 00:18:44,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497419064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:44,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:44,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152502022] [2024-06-28 00:18:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:44,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:44,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:44,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 192 transitions, 2217 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:44,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:44,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:44,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:48,013 INFO L124 PetriNetUnfolderBase]: 5474/8584 cut-off events. [2024-06-28 00:18:48,013 INFO L125 PetriNetUnfolderBase]: For 213103/213103 co-relation queries the response was YES. [2024-06-28 00:18:48,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54196 conditions, 8584 events. 5474/8584 cut-off events. For 213103/213103 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 53076 event pairs, 2150 based on Foata normal form. 64/8648 useless extension candidates. Maximal degree in co-relation 54123. Up to 6053 conditions per place. [2024-06-28 00:18:48,081 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 204 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-28 00:18:48,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 265 transitions, 3383 flow [2024-06-28 00:18:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:18:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:18:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-28 00:18:48,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 00:18:48,087 INFO L175 Difference]: Start difference. First operand has 149 places, 192 transitions, 2217 flow. Second operand 12 states and 212 transitions. [2024-06-28 00:18:48,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 265 transitions, 3383 flow [2024-06-28 00:18:48,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 265 transitions, 3251 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-28 00:18:48,352 INFO L231 Difference]: Finished difference. Result has 150 places, 193 transitions, 2257 flow [2024-06-28 00:18:48,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2257, PETRI_PLACES=150, PETRI_TRANSITIONS=193} [2024-06-28 00:18:48,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-28 00:18:48,353 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 193 transitions, 2257 flow [2024-06-28 00:18:48,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:48,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:48,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:48,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:18:48,354 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:48,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1456868398, now seen corresponding path program 3 times [2024-06-28 00:18:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:48,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51425521] [2024-06-28 00:18:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:48,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:53,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:53,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51425521] [2024-06-28 00:18:53,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51425521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:53,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:53,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812679061] [2024-06-28 00:18:53,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:53,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:53,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 193 transitions, 2257 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:53,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:53,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:53,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:56,497 INFO L124 PetriNetUnfolderBase]: 6122/9628 cut-off events. [2024-06-28 00:18:56,498 INFO L125 PetriNetUnfolderBase]: For 255925/255925 co-relation queries the response was YES. [2024-06-28 00:18:56,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61439 conditions, 9628 events. 6122/9628 cut-off events. For 255925/255925 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 61059 event pairs, 2617 based on Foata normal form. 64/9692 useless extension candidates. Maximal degree in co-relation 61365. Up to 6583 conditions per place. [2024-06-28 00:18:56,565 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 208 selfloop transitions, 46 changer transitions 0/257 dead transitions. [2024-06-28 00:18:56,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 257 transitions, 3407 flow [2024-06-28 00:18:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:56,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 00:18:56,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:18:56,567 INFO L175 Difference]: Start difference. First operand has 150 places, 193 transitions, 2257 flow. Second operand 11 states and 187 transitions. [2024-06-28 00:18:56,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 257 transitions, 3407 flow [2024-06-28 00:18:56,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 257 transitions, 3259 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 00:18:56,811 INFO L231 Difference]: Finished difference. Result has 152 places, 195 transitions, 2297 flow [2024-06-28 00:18:56,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2297, PETRI_PLACES=152, PETRI_TRANSITIONS=195} [2024-06-28 00:18:56,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 00:18:56,811 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 195 transitions, 2297 flow [2024-06-28 00:18:56,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:56,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:56,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:56,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:18:56,812 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:56,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -263195345, now seen corresponding path program 1 times [2024-06-28 00:18:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:56,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32492958] [2024-06-28 00:18:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:58,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32492958] [2024-06-28 00:18:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32492958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:58,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:18:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186728526] [2024-06-28 00:18:58,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:58,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:18:58,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:58,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:18:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:18:58,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:18:58,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 195 transitions, 2297 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:58,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:58,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:18:58,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:00,759 INFO L124 PetriNetUnfolderBase]: 5942/9314 cut-off events. [2024-06-28 00:19:00,759 INFO L125 PetriNetUnfolderBase]: For 241554/241573 co-relation queries the response was YES. [2024-06-28 00:19:00,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59576 conditions, 9314 events. 5942/9314 cut-off events. For 241554/241573 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 58652 event pairs, 2878 based on Foata normal form. 23/9337 useless extension candidates. Maximal degree in co-relation 59500. Up to 9087 conditions per place. [2024-06-28 00:19:00,838 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 176 selfloop transitions, 31 changer transitions 3/213 dead transitions. [2024-06-28 00:19:00,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 213 transitions, 2807 flow [2024-06-28 00:19:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:19:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:19:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 00:19:00,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37630662020905925 [2024-06-28 00:19:00,840 INFO L175 Difference]: Start difference. First operand has 152 places, 195 transitions, 2297 flow. Second operand 7 states and 108 transitions. [2024-06-28 00:19:00,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 213 transitions, 2807 flow [2024-06-28 00:19:01,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 213 transitions, 2669 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:01,152 INFO L231 Difference]: Finished difference. Result has 151 places, 192 transitions, 2203 flow [2024-06-28 00:19:01,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2203, PETRI_PLACES=151, PETRI_TRANSITIONS=192} [2024-06-28 00:19:01,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-28 00:19:01,157 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 192 transitions, 2203 flow [2024-06-28 00:19:01,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:01,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:01,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:01,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:19:01,158 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:01,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash -563345956, now seen corresponding path program 4 times [2024-06-28 00:19:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345448209] [2024-06-28 00:19:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345448209] [2024-06-28 00:19:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345448209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:19:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653280513] [2024-06-28 00:19:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:05,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:19:05,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:19:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:19:05,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:05,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 192 transitions, 2203 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:05,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:05,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:05,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:08,880 INFO L124 PetriNetUnfolderBase]: 5762/9044 cut-off events. [2024-06-28 00:19:08,880 INFO L125 PetriNetUnfolderBase]: For 277750/277750 co-relation queries the response was YES. [2024-06-28 00:19:08,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58283 conditions, 9044 events. 5762/9044 cut-off events. For 277750/277750 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 56688 event pairs, 2560 based on Foata normal form. 80/9124 useless extension candidates. Maximal degree in co-relation 58206. Up to 7637 conditions per place. [2024-06-28 00:19:08,956 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 191 selfloop transitions, 67 changer transitions 5/266 dead transitions. [2024-06-28 00:19:08,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 266 transitions, 3517 flow [2024-06-28 00:19:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:19:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:19:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-28 00:19:08,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-28 00:19:08,970 INFO L175 Difference]: Start difference. First operand has 151 places, 192 transitions, 2203 flow. Second operand 12 states and 212 transitions. [2024-06-28 00:19:08,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 266 transitions, 3517 flow [2024-06-28 00:19:09,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 266 transitions, 3453 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 00:19:09,246 INFO L231 Difference]: Finished difference. Result has 157 places, 192 transitions, 2329 flow [2024-06-28 00:19:09,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2329, PETRI_PLACES=157, PETRI_TRANSITIONS=192} [2024-06-28 00:19:09,248 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 00:19:09,249 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 192 transitions, 2329 flow [2024-06-28 00:19:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:09,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:09,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:09,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:19:09,249 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:09,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2026246214, now seen corresponding path program 5 times [2024-06-28 00:19:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:09,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827085430] [2024-06-28 00:19:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827085430] [2024-06-28 00:19:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827085430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:14,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:14,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420856922] [2024-06-28 00:19:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:14,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:14,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:14,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:14,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 192 transitions, 2329 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:14,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:14,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:14,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:17,947 INFO L124 PetriNetUnfolderBase]: 6080/9562 cut-off events. [2024-06-28 00:19:17,948 INFO L125 PetriNetUnfolderBase]: For 296820/296820 co-relation queries the response was YES. [2024-06-28 00:19:17,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63558 conditions, 9562 events. 6080/9562 cut-off events. For 296820/296820 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 60550 event pairs, 2728 based on Foata normal form. 16/9578 useless extension candidates. Maximal degree in co-relation 63480. Up to 7549 conditions per place. [2024-06-28 00:19:18,019 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 203 selfloop transitions, 74 changer transitions 1/281 dead transitions. [2024-06-28 00:19:18,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 281 transitions, 3945 flow [2024-06-28 00:19:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:19:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:19:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-06-28 00:19:18,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2024-06-28 00:19:18,026 INFO L175 Difference]: Start difference. First operand has 157 places, 192 transitions, 2329 flow. Second operand 13 states and 233 transitions. [2024-06-28 00:19:18,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 281 transitions, 3945 flow [2024-06-28 00:19:18,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 281 transitions, 3776 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:18,338 INFO L231 Difference]: Finished difference. Result has 160 places, 197 transitions, 2479 flow [2024-06-28 00:19:18,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2479, PETRI_PLACES=160, PETRI_TRANSITIONS=197} [2024-06-28 00:19:18,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 00:19:18,339 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 197 transitions, 2479 flow [2024-06-28 00:19:18,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:18,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:18,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:18,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:19:18,340 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:18,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 672228446, now seen corresponding path program 6 times [2024-06-28 00:19:18,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:18,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549630] [2024-06-28 00:19:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:18,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:23,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:23,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549630] [2024-06-28 00:19:23,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:23,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:23,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919684485] [2024-06-28 00:19:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:23,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:23,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:23,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:23,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 197 transitions, 2479 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:23,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:23,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:23,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:26,918 INFO L124 PetriNetUnfolderBase]: 6686/10520 cut-off events. [2024-06-28 00:19:26,919 INFO L125 PetriNetUnfolderBase]: For 373451/373451 co-relation queries the response was YES. [2024-06-28 00:19:26,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72991 conditions, 10520 events. 6686/10520 cut-off events. For 373451/373451 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 67440 event pairs, 2668 based on Foata normal form. 16/10536 useless extension candidates. Maximal degree in co-relation 72912. Up to 6175 conditions per place. [2024-06-28 00:19:26,997 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 202 selfloop transitions, 82 changer transitions 0/287 dead transitions. [2024-06-28 00:19:26,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 287 transitions, 4289 flow [2024-06-28 00:19:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:19:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:19:26,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 00:19:26,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 00:19:26,999 INFO L175 Difference]: Start difference. First operand has 160 places, 197 transitions, 2479 flow. Second operand 12 states and 224 transitions. [2024-06-28 00:19:26,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 287 transitions, 4289 flow [2024-06-28 00:19:27,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 287 transitions, 4105 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 00:19:27,385 INFO L231 Difference]: Finished difference. Result has 163 places, 202 transitions, 2640 flow [2024-06-28 00:19:27,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2640, PETRI_PLACES=163, PETRI_TRANSITIONS=202} [2024-06-28 00:19:27,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 00:19:27,385 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 202 transitions, 2640 flow [2024-06-28 00:19:27,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:27,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:27,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:27,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:19:27,386 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:27,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:27,386 INFO L85 PathProgramCache]: Analyzing trace with hash 229909871, now seen corresponding path program 2 times [2024-06-28 00:19:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:27,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490665914] [2024-06-28 00:19:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:29,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:29,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490665914] [2024-06-28 00:19:29,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490665914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:29,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:29,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:19:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5366265] [2024-06-28 00:19:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:29,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:19:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:29,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:19:29,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:19:29,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:29,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 202 transitions, 2640 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:29,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:29,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:29,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:32,020 INFO L124 PetriNetUnfolderBase]: 6694/10538 cut-off events. [2024-06-28 00:19:32,020 INFO L125 PetriNetUnfolderBase]: For 395799/395812 co-relation queries the response was YES. [2024-06-28 00:19:32,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75297 conditions, 10538 events. 6694/10538 cut-off events. For 395799/395812 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 68070 event pairs, 3340 based on Foata normal form. 17/10555 useless extension candidates. Maximal degree in co-relation 75216. Up to 10187 conditions per place. [2024-06-28 00:19:32,112 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 176 selfloop transitions, 44 changer transitions 0/223 dead transitions. [2024-06-28 00:19:32,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 223 transitions, 3392 flow [2024-06-28 00:19:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:19:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:19:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 00:19:32,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-28 00:19:32,114 INFO L175 Difference]: Start difference. First operand has 163 places, 202 transitions, 2640 flow. Second operand 6 states and 104 transitions. [2024-06-28 00:19:32,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 223 transitions, 3392 flow [2024-06-28 00:19:32,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 223 transitions, 3121 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 00:19:32,454 INFO L231 Difference]: Finished difference. Result has 160 places, 205 transitions, 2513 flow [2024-06-28 00:19:32,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2513, PETRI_PLACES=160, PETRI_TRANSITIONS=205} [2024-06-28 00:19:32,454 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 00:19:32,454 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 205 transitions, 2513 flow [2024-06-28 00:19:32,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:32,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:32,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:32,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:19:32,455 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:32,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:32,455 INFO L85 PathProgramCache]: Analyzing trace with hash -171361011, now seen corresponding path program 1 times [2024-06-28 00:19:32,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:32,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331370587] [2024-06-28 00:19:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331370587] [2024-06-28 00:19:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331370587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:19:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127381271] [2024-06-28 00:19:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:35,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:19:35,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:35,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:19:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:19:35,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:35,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 205 transitions, 2513 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:35,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:35,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:35,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:37,999 INFO L124 PetriNetUnfolderBase]: 6741/10613 cut-off events. [2024-06-28 00:19:38,000 INFO L125 PetriNetUnfolderBase]: For 414785/414791 co-relation queries the response was YES. [2024-06-28 00:19:38,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75049 conditions, 10613 events. 6741/10613 cut-off events. For 414785/414791 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 68257 event pairs, 3973 based on Foata normal form. 22/10635 useless extension candidates. Maximal degree in co-relation 74966. Up to 10422 conditions per place. [2024-06-28 00:19:38,123 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 204 selfloop transitions, 21 changer transitions 0/228 dead transitions. [2024-06-28 00:19:38,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 228 transitions, 3163 flow [2024-06-28 00:19:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:19:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:19:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 00:19:38,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37282229965156793 [2024-06-28 00:19:38,125 INFO L175 Difference]: Start difference. First operand has 160 places, 205 transitions, 2513 flow. Second operand 7 states and 107 transitions. [2024-06-28 00:19:38,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 228 transitions, 3163 flow [2024-06-28 00:19:38,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 228 transitions, 3087 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:38,686 INFO L231 Difference]: Finished difference. Result has 163 places, 208 transitions, 2537 flow [2024-06-28 00:19:38,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2537, PETRI_PLACES=163, PETRI_TRANSITIONS=208} [2024-06-28 00:19:38,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 00:19:38,687 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 208 transitions, 2537 flow [2024-06-28 00:19:38,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:38,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:38,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:38,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:19:38,687 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:38,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash 728648072, now seen corresponding path program 1 times [2024-06-28 00:19:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:38,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490033638] [2024-06-28 00:19:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:38,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:44,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:44,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490033638] [2024-06-28 00:19:44,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490033638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562592031] [2024-06-28 00:19:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:44,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:44,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:44,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:44,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 208 transitions, 2537 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:44,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:44,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:44,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:48,763 INFO L124 PetriNetUnfolderBase]: 8384/13381 cut-off events. [2024-06-28 00:19:48,764 INFO L125 PetriNetUnfolderBase]: For 577693/577703 co-relation queries the response was YES. [2024-06-28 00:19:48,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90009 conditions, 13381 events. 8384/13381 cut-off events. For 577693/577703 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 91648 event pairs, 2900 based on Foata normal form. 194/13575 useless extension candidates. Maximal degree in co-relation 89925. Up to 6904 conditions per place. [2024-06-28 00:19:48,881 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 252 selfloop transitions, 90 changer transitions 0/345 dead transitions. [2024-06-28 00:19:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 345 transitions, 4698 flow [2024-06-28 00:19:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:19:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:19:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2024-06-28 00:19:48,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474671669793621 [2024-06-28 00:19:48,882 INFO L175 Difference]: Start difference. First operand has 163 places, 208 transitions, 2537 flow. Second operand 13 states and 253 transitions. [2024-06-28 00:19:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 345 transitions, 4698 flow [2024-06-28 00:19:49,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 345 transitions, 4632 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:19:49,316 INFO L231 Difference]: Finished difference. Result has 176 places, 237 transitions, 3403 flow [2024-06-28 00:19:49,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3403, PETRI_PLACES=176, PETRI_TRANSITIONS=237} [2024-06-28 00:19:49,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 00:19:49,317 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 237 transitions, 3403 flow [2024-06-28 00:19:49,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:49,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:49,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:19:49,317 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:49,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2097020216, now seen corresponding path program 1 times [2024-06-28 00:19:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621345635] [2024-06-28 00:19:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621345635] [2024-06-28 00:19:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621345635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:51,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:51,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:19:51,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6461598] [2024-06-28 00:19:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:51,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:19:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:19:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:19:51,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:51,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 237 transitions, 3403 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:51,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:51,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:54,085 INFO L124 PetriNetUnfolderBase]: 8412/13425 cut-off events. [2024-06-28 00:19:54,085 INFO L125 PetriNetUnfolderBase]: For 576478/576494 co-relation queries the response was YES. [2024-06-28 00:19:54,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98160 conditions, 13425 events. 8412/13425 cut-off events. For 576478/576494 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 92696 event pairs, 4261 based on Foata normal form. 17/13442 useless extension candidates. Maximal degree in co-relation 98072. Up to 13278 conditions per place. [2024-06-28 00:19:54,207 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 244 selfloop transitions, 35 changer transitions 0/282 dead transitions. [2024-06-28 00:19:54,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 282 transitions, 4509 flow [2024-06-28 00:19:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:19:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:19:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:19:54,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:19:54,209 INFO L175 Difference]: Start difference. First operand has 176 places, 237 transitions, 3403 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:19:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 282 transitions, 4509 flow [2024-06-28 00:19:55,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 282 transitions, 4202 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-06-28 00:19:55,712 INFO L231 Difference]: Finished difference. Result has 181 places, 253 transitions, 3493 flow [2024-06-28 00:19:55,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3493, PETRI_PLACES=181, PETRI_TRANSITIONS=253} [2024-06-28 00:19:55,712 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2024-06-28 00:19:55,712 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 253 transitions, 3493 flow [2024-06-28 00:19:55,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:55,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:55,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:55,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:19:55,713 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:55,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash 443382468, now seen corresponding path program 2 times [2024-06-28 00:19:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:55,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708818111] [2024-06-28 00:19:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708818111] [2024-06-28 00:19:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708818111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:57,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:57,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:19:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915770815] [2024-06-28 00:19:57,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:57,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:19:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:19:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:19:57,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:19:57,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 253 transitions, 3493 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:57,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:57,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:19:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:01,129 INFO L124 PetriNetUnfolderBase]: 8127/12978 cut-off events. [2024-06-28 00:20:01,130 INFO L125 PetriNetUnfolderBase]: For 466375/466389 co-relation queries the response was YES. [2024-06-28 00:20:01,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90819 conditions, 12978 events. 8127/12978 cut-off events. For 466375/466389 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 88784 event pairs, 3626 based on Foata normal form. 15/12993 useless extension candidates. Maximal degree in co-relation 90727. Up to 12814 conditions per place. [2024-06-28 00:20:01,266 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 239 selfloop transitions, 43 changer transitions 0/285 dead transitions. [2024-06-28 00:20:01,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 285 transitions, 4567 flow [2024-06-28 00:20:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:20:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:20:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 00:20:01,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38109756097560976 [2024-06-28 00:20:01,268 INFO L175 Difference]: Start difference. First operand has 181 places, 253 transitions, 3493 flow. Second operand 8 states and 125 transitions. [2024-06-28 00:20:01,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 285 transitions, 4567 flow [2024-06-28 00:20:02,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 285 transitions, 4271 flow, removed 147 selfloop flow, removed 1 redundant places. [2024-06-28 00:20:02,119 INFO L231 Difference]: Finished difference. Result has 190 places, 265 transitions, 3588 flow [2024-06-28 00:20:02,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3588, PETRI_PLACES=190, PETRI_TRANSITIONS=265} [2024-06-28 00:20:02,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-28 00:20:02,120 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 265 transitions, 3588 flow [2024-06-28 00:20:02,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:02,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:02,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:02,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:20:02,121 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:02,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash 443392698, now seen corresponding path program 3 times [2024-06-28 00:20:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:02,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943691729] [2024-06-28 00:20:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:04,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:04,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943691729] [2024-06-28 00:20:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943691729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:04,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:20:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017483366] [2024-06-28 00:20:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:20:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:20:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:20:04,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:04,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 265 transitions, 3588 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:04,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:04,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:04,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:08,120 INFO L124 PetriNetUnfolderBase]: 8121/12971 cut-off events. [2024-06-28 00:20:08,120 INFO L125 PetriNetUnfolderBase]: For 478387/478397 co-relation queries the response was YES. [2024-06-28 00:20:08,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90778 conditions, 12971 events. 8121/12971 cut-off events. For 478387/478397 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 88787 event pairs, 3632 based on Foata normal form. 7/12978 useless extension candidates. Maximal degree in co-relation 90681. Up to 12811 conditions per place. [2024-06-28 00:20:08,240 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 238 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-06-28 00:20:08,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 277 transitions, 4278 flow [2024-06-28 00:20:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 00:20:08,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623693379790941 [2024-06-28 00:20:08,244 INFO L175 Difference]: Start difference. First operand has 190 places, 265 transitions, 3588 flow. Second operand 7 states and 104 transitions. [2024-06-28 00:20:08,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 277 transitions, 4278 flow [2024-06-28 00:20:08,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 277 transitions, 4186 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-06-28 00:20:08,852 INFO L231 Difference]: Finished difference. Result has 196 places, 265 transitions, 3575 flow [2024-06-28 00:20:08,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3575, PETRI_PLACES=196, PETRI_TRANSITIONS=265} [2024-06-28 00:20:08,853 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 00:20:08,853 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 265 transitions, 3575 flow [2024-06-28 00:20:08,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:08,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:08,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:08,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:20:08,854 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:08,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -920852732, now seen corresponding path program 1 times [2024-06-28 00:20:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382343772] [2024-06-28 00:20:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:14,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382343772] [2024-06-28 00:20:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382343772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:14,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:14,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819230505] [2024-06-28 00:20:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:14,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:14,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 265 transitions, 3575 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:14,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:14,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:14,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:18,778 INFO L124 PetriNetUnfolderBase]: 8011/12822 cut-off events. [2024-06-28 00:20:18,778 INFO L125 PetriNetUnfolderBase]: For 494153/494165 co-relation queries the response was YES. [2024-06-28 00:20:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88043 conditions, 12822 events. 8011/12822 cut-off events. For 494153/494165 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 88007 event pairs, 3815 based on Foata normal form. 68/12890 useless extension candidates. Maximal degree in co-relation 87943. Up to 10960 conditions per place. [2024-06-28 00:20:18,899 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 261 selfloop transitions, 73 changer transitions 14/351 dead transitions. [2024-06-28 00:20:18,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 351 transitions, 5391 flow [2024-06-28 00:20:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:20:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:20:18,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-06-28 00:20:18,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352720450281426 [2024-06-28 00:20:18,901 INFO L175 Difference]: Start difference. First operand has 196 places, 265 transitions, 3575 flow. Second operand 13 states and 232 transitions. [2024-06-28 00:20:18,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 351 transitions, 5391 flow [2024-06-28 00:20:19,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 351 transitions, 5300 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 00:20:19,579 INFO L231 Difference]: Finished difference. Result has 204 places, 262 transitions, 3617 flow [2024-06-28 00:20:19,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3484, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3617, PETRI_PLACES=204, PETRI_TRANSITIONS=262} [2024-06-28 00:20:19,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-28 00:20:19,580 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 262 transitions, 3617 flow [2024-06-28 00:20:19,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:19,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:19,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:19,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:20:19,580 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:19,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:19,581 INFO L85 PathProgramCache]: Analyzing trace with hash -635752862, now seen corresponding path program 2 times [2024-06-28 00:20:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881062877] [2024-06-28 00:20:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:25,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:25,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881062877] [2024-06-28 00:20:25,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881062877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:25,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:25,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:25,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535141900] [2024-06-28 00:20:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:25,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:25,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:25,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:25,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 262 transitions, 3617 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:25,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:25,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:25,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:28,955 INFO L124 PetriNetUnfolderBase]: 8097/12964 cut-off events. [2024-06-28 00:20:28,956 INFO L125 PetriNetUnfolderBase]: For 522172/522184 co-relation queries the response was YES. [2024-06-28 00:20:29,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89756 conditions, 12964 events. 8097/12964 cut-off events. For 522172/522184 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 88943 event pairs, 3655 based on Foata normal form. 68/13032 useless extension candidates. Maximal degree in co-relation 89655. Up to 9094 conditions per place. [2024-06-28 00:20:29,089 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 247 selfloop transitions, 79 changer transitions 15/344 dead transitions. [2024-06-28 00:20:29,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 344 transitions, 5373 flow [2024-06-28 00:20:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:20:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:20:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 00:20:29,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44308943089430897 [2024-06-28 00:20:29,090 INFO L175 Difference]: Start difference. First operand has 204 places, 262 transitions, 3617 flow. Second operand 12 states and 218 transitions. [2024-06-28 00:20:29,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 344 transitions, 5373 flow [2024-06-28 00:20:29,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 344 transitions, 5176 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-28 00:20:29,898 INFO L231 Difference]: Finished difference. Result has 204 places, 257 transitions, 3476 flow [2024-06-28 00:20:29,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3476, PETRI_PLACES=204, PETRI_TRANSITIONS=257} [2024-06-28 00:20:29,900 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-28 00:20:29,900 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 257 transitions, 3476 flow [2024-06-28 00:20:29,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:29,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:29,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:29,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:20:29,901 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:29,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1462727010, now seen corresponding path program 4 times [2024-06-28 00:20:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:29,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769702282] [2024-06-28 00:20:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769702282] [2024-06-28 00:20:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769702282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:20:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470098447] [2024-06-28 00:20:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:20:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:20:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:20:32,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:32,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 257 transitions, 3476 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:32,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:32,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:32,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:35,567 INFO L124 PetriNetUnfolderBase]: 7487/11970 cut-off events. [2024-06-28 00:20:35,567 INFO L125 PetriNetUnfolderBase]: For 450956/450966 co-relation queries the response was YES. [2024-06-28 00:20:35,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84074 conditions, 11970 events. 7487/11970 cut-off events. For 450956/450966 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 81067 event pairs, 3254 based on Foata normal form. 7/11977 useless extension candidates. Maximal degree in co-relation 83972. Up to 11778 conditions per place. [2024-06-28 00:20:35,724 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 234 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2024-06-28 00:20:35,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 280 transitions, 4458 flow [2024-06-28 00:20:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 00:20:35,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3867595818815331 [2024-06-28 00:20:35,726 INFO L175 Difference]: Start difference. First operand has 204 places, 257 transitions, 3476 flow. Second operand 7 states and 111 transitions. [2024-06-28 00:20:35,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 280 transitions, 4458 flow [2024-06-28 00:20:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 280 transitions, 4271 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 00:20:36,760 INFO L231 Difference]: Finished difference. Result has 202 places, 264 transitions, 3531 flow [2024-06-28 00:20:36,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3531, PETRI_PLACES=202, PETRI_TRANSITIONS=264} [2024-06-28 00:20:36,761 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-28 00:20:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 264 transitions, 3531 flow [2024-06-28 00:20:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:36,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:36,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:36,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:20:36,762 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1916626002, now seen corresponding path program 1 times [2024-06-28 00:20:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:36,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369737932] [2024-06-28 00:20:36,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:36,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369737932] [2024-06-28 00:20:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369737932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:20:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111399559] [2024-06-28 00:20:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:38,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:20:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:20:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:20:38,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:38,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 264 transitions, 3531 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:38,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:38,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:38,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:41,604 INFO L124 PetriNetUnfolderBase]: 7174/11488 cut-off events. [2024-06-28 00:20:41,604 INFO L125 PetriNetUnfolderBase]: For 411065/411075 co-relation queries the response was YES. [2024-06-28 00:20:41,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80416 conditions, 11488 events. 7174/11488 cut-off events. For 411065/411075 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 77191 event pairs, 3452 based on Foata normal form. 13/11501 useless extension candidates. Maximal degree in co-relation 80311. Up to 11331 conditions per place. [2024-06-28 00:20:41,749 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 232 selfloop transitions, 48 changer transitions 0/283 dead transitions. [2024-06-28 00:20:41,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 283 transitions, 4175 flow [2024-06-28 00:20:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:20:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:20:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-28 00:20:41,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33875338753387535 [2024-06-28 00:20:41,751 INFO L175 Difference]: Start difference. First operand has 202 places, 264 transitions, 3531 flow. Second operand 9 states and 125 transitions. [2024-06-28 00:20:41,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 283 transitions, 4175 flow [2024-06-28 00:20:42,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 283 transitions, 4006 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 00:20:42,942 INFO L231 Difference]: Finished difference. Result has 206 places, 264 transitions, 3480 flow [2024-06-28 00:20:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3480, PETRI_PLACES=206, PETRI_TRANSITIONS=264} [2024-06-28 00:20:42,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-28 00:20:42,943 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 264 transitions, 3480 flow [2024-06-28 00:20:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:42,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:42,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:42,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:20:42,943 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:42,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash 472406446, now seen corresponding path program 1 times [2024-06-28 00:20:42,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:42,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911686131] [2024-06-28 00:20:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:46,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:46,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911686131] [2024-06-28 00:20:46,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911686131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:46,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:46,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:20:46,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738574721] [2024-06-28 00:20:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:46,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:20:46,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:20:46,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:20:46,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:46,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 264 transitions, 3480 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:46,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:46,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:46,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:49,320 INFO L124 PetriNetUnfolderBase]: 7234/11598 cut-off events. [2024-06-28 00:20:49,320 INFO L125 PetriNetUnfolderBase]: For 439172/439191 co-relation queries the response was YES. [2024-06-28 00:20:49,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81195 conditions, 11598 events. 7234/11598 cut-off events. For 439172/439191 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 78058 event pairs, 3904 based on Foata normal form. 34/11632 useless extension candidates. Maximal degree in co-relation 81089. Up to 11273 conditions per place. [2024-06-28 00:20:49,460 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 253 selfloop transitions, 35 changer transitions 0/291 dead transitions. [2024-06-28 00:20:49,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 291 transitions, 4292 flow [2024-06-28 00:20:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:20:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:20:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 00:20:49,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36890243902439024 [2024-06-28 00:20:49,464 INFO L175 Difference]: Start difference. First operand has 206 places, 264 transitions, 3480 flow. Second operand 8 states and 121 transitions. [2024-06-28 00:20:49,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 291 transitions, 4292 flow [2024-06-28 00:20:50,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 291 transitions, 4178 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 00:20:50,381 INFO L231 Difference]: Finished difference. Result has 206 places, 267 transitions, 3512 flow [2024-06-28 00:20:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3512, PETRI_PLACES=206, PETRI_TRANSITIONS=267} [2024-06-28 00:20:50,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-28 00:20:50,382 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 267 transitions, 3512 flow [2024-06-28 00:20:50,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:50,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:50,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:20:50,383 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1469571154, now seen corresponding path program 2 times [2024-06-28 00:20:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960043596] [2024-06-28 00:20:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:54,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:54,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960043596] [2024-06-28 00:20:54,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960043596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:54,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:54,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:20:54,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344113114] [2024-06-28 00:20:54,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:54,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:20:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:20:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:20:54,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:20:54,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 267 transitions, 3512 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:54,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:54,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:20:54,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:57,449 INFO L124 PetriNetUnfolderBase]: 7294/11693 cut-off events. [2024-06-28 00:20:57,449 INFO L125 PetriNetUnfolderBase]: For 454088/454109 co-relation queries the response was YES. [2024-06-28 00:20:57,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82417 conditions, 11693 events. 7294/11693 cut-off events. For 454088/454109 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 78906 event pairs, 3895 based on Foata normal form. 33/11726 useless extension candidates. Maximal degree in co-relation 82311. Up to 11313 conditions per place. [2024-06-28 00:20:57,559 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 248 selfloop transitions, 44 changer transitions 0/295 dead transitions. [2024-06-28 00:20:57,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 295 transitions, 4596 flow [2024-06-28 00:20:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:20:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:20:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:20:57,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780487804878049 [2024-06-28 00:20:57,561 INFO L175 Difference]: Start difference. First operand has 206 places, 267 transitions, 3512 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:20:57,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 295 transitions, 4596 flow [2024-06-28 00:20:58,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 295 transitions, 4504 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:20:58,439 INFO L231 Difference]: Finished difference. Result has 208 places, 270 transitions, 3584 flow [2024-06-28 00:20:58,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3584, PETRI_PLACES=208, PETRI_TRANSITIONS=270} [2024-06-28 00:20:58,440 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 166 predicate places. [2024-06-28 00:20:58,440 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 270 transitions, 3584 flow [2024-06-28 00:20:58,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:58,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:58,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:58,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:20:58,441 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:58,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:58,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1482470068, now seen corresponding path program 2 times [2024-06-28 00:20:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221434580] [2024-06-28 00:20:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221434580] [2024-06-28 00:21:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221434580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:02,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:02,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:21:02,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111309023] [2024-06-28 00:21:02,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:02,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:21:02,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:21:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:21:02,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:02,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 270 transitions, 3584 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:02,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:02,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:02,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:05,727 INFO L124 PetriNetUnfolderBase]: 7285/11658 cut-off events. [2024-06-28 00:21:05,728 INFO L125 PetriNetUnfolderBase]: For 452153/452159 co-relation queries the response was YES. [2024-06-28 00:21:05,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82505 conditions, 11658 events. 7285/11658 cut-off events. For 452153/452159 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 78354 event pairs, 3076 based on Foata normal form. 6/11664 useless extension candidates. Maximal degree in co-relation 82398. Up to 11476 conditions per place. [2024-06-28 00:21:05,874 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 241 selfloop transitions, 41 changer transitions 0/285 dead transitions. [2024-06-28 00:21:05,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 285 transitions, 4318 flow [2024-06-28 00:21:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:21:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:21:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 00:21:05,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37630662020905925 [2024-06-28 00:21:05,877 INFO L175 Difference]: Start difference. First operand has 208 places, 270 transitions, 3584 flow. Second operand 7 states and 108 transitions. [2024-06-28 00:21:05,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 285 transitions, 4318 flow [2024-06-28 00:21:06,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 285 transitions, 4160 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:06,869 INFO L231 Difference]: Finished difference. Result has 209 places, 270 transitions, 3518 flow [2024-06-28 00:21:06,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3518, PETRI_PLACES=209, PETRI_TRANSITIONS=270} [2024-06-28 00:21:06,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-28 00:21:06,870 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 270 transitions, 3518 flow [2024-06-28 00:21:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:06,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:06,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:21:06,870 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:06,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1915232880, now seen corresponding path program 3 times [2024-06-28 00:21:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838217552] [2024-06-28 00:21:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838217552] [2024-06-28 00:21:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838217552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:21:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598731073] [2024-06-28 00:21:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:21:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:21:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:21:10,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:10,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 270 transitions, 3518 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:10,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:13,700 INFO L124 PetriNetUnfolderBase]: 7404/11862 cut-off events. [2024-06-28 00:21:13,702 INFO L125 PetriNetUnfolderBase]: For 495198/495219 co-relation queries the response was YES. [2024-06-28 00:21:13,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84097 conditions, 11862 events. 7404/11862 cut-off events. For 495198/495219 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 80021 event pairs, 3882 based on Foata normal form. 33/11895 useless extension candidates. Maximal degree in co-relation 83989. Up to 11186 conditions per place. [2024-06-28 00:21:13,813 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 249 selfloop transitions, 52 changer transitions 0/304 dead transitions. [2024-06-28 00:21:13,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 304 transitions, 4774 flow [2024-06-28 00:21:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:21:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:21:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:21:13,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-28 00:21:13,815 INFO L175 Difference]: Start difference. First operand has 209 places, 270 transitions, 3518 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:21:13,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 304 transitions, 4774 flow [2024-06-28 00:21:14,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 304 transitions, 4672 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:14,699 INFO L231 Difference]: Finished difference. Result has 211 places, 274 transitions, 3618 flow [2024-06-28 00:21:14,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3618, PETRI_PLACES=211, PETRI_TRANSITIONS=274} [2024-06-28 00:21:14,701 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-06-28 00:21:14,701 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 274 transitions, 3618 flow [2024-06-28 00:21:14,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:14,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:14,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:21:14,701 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:14,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1469119732, now seen corresponding path program 1 times [2024-06-28 00:21:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242288913] [2024-06-28 00:21:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242288913] [2024-06-28 00:21:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242288913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:19,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:19,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033960306] [2024-06-28 00:21:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:19,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:19,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:19,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:19,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:19,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 274 transitions, 3618 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:19,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:19,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:19,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:22,522 INFO L124 PetriNetUnfolderBase]: 7399/11860 cut-off events. [2024-06-28 00:21:22,523 INFO L125 PetriNetUnfolderBase]: For 493807/493813 co-relation queries the response was YES. [2024-06-28 00:21:22,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84659 conditions, 11860 events. 7399/11860 cut-off events. For 493807/493813 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 80259 event pairs, 4592 based on Foata normal form. 8/11868 useless extension candidates. Maximal degree in co-relation 84550. Up to 11673 conditions per place. [2024-06-28 00:21:22,660 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 273 selfloop transitions, 21 changer transitions 0/297 dead transitions. [2024-06-28 00:21:22,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 297 transitions, 4418 flow [2024-06-28 00:21:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:21:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:21:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-28 00:21:22,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3445121951219512 [2024-06-28 00:21:22,662 INFO L175 Difference]: Start difference. First operand has 211 places, 274 transitions, 3618 flow. Second operand 8 states and 113 transitions. [2024-06-28 00:21:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 297 transitions, 4418 flow [2024-06-28 00:21:23,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 297 transitions, 4314 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 00:21:23,553 INFO L231 Difference]: Finished difference. Result has 215 places, 276 transitions, 3607 flow [2024-06-28 00:21:23,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3607, PETRI_PLACES=215, PETRI_TRANSITIONS=276} [2024-06-28 00:21:23,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-28 00:21:23,553 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 276 transitions, 3607 flow [2024-06-28 00:21:23,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:23,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:23,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:23,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:21:23,554 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:23,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2121269761, now seen corresponding path program 1 times [2024-06-28 00:21:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341126298] [2024-06-28 00:21:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:23,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:25,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:25,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341126298] [2024-06-28 00:21:25,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341126298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:25,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:25,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:21:25,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883216200] [2024-06-28 00:21:25,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:25,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:21:25,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:21:25,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:21:25,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-28 00:21:25,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 276 transitions, 3607 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:25,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:25,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-28 00:21:25,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:27,551 INFO L124 PetriNetUnfolderBase]: 5386/9543 cut-off events. [2024-06-28 00:21:27,552 INFO L125 PetriNetUnfolderBase]: For 407949/408334 co-relation queries the response was YES. [2024-06-28 00:21:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67589 conditions, 9543 events. 5386/9543 cut-off events. For 407949/408334 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 74041 event pairs, 1936 based on Foata normal form. 22/9212 useless extension candidates. Maximal degree in co-relation 67478. Up to 7607 conditions per place. [2024-06-28 00:21:27,663 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 193 selfloop transitions, 34 changer transitions 0/291 dead transitions. [2024-06-28 00:21:27,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 291 transitions, 4196 flow [2024-06-28 00:21:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:21:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:21:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 00:21:27,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:21:27,664 INFO L175 Difference]: Start difference. First operand has 215 places, 276 transitions, 3607 flow. Second operand 6 states and 102 transitions. [2024-06-28 00:21:27,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 291 transitions, 4196 flow [2024-06-28 00:21:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 291 transitions, 4109 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:28,380 INFO L231 Difference]: Finished difference. Result has 215 places, 278 transitions, 3647 flow [2024-06-28 00:21:28,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3522, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3647, PETRI_PLACES=215, PETRI_TRANSITIONS=278} [2024-06-28 00:21:28,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-28 00:21:28,381 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 278 transitions, 3647 flow [2024-06-28 00:21:28,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:28,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:28,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:28,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:21:28,382 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:28,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash 891106423, now seen corresponding path program 1 times [2024-06-28 00:21:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5095360] [2024-06-28 00:21:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:32,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5095360] [2024-06-28 00:21:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5095360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237895136] [2024-06-28 00:21:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:32,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:32,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 278 transitions, 3647 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:32,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:32,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:32,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:35,756 INFO L124 PetriNetUnfolderBase]: 7329/11730 cut-off events. [2024-06-28 00:21:35,756 INFO L125 PetriNetUnfolderBase]: For 506495/506503 co-relation queries the response was YES. [2024-06-28 00:21:35,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83739 conditions, 11730 events. 7329/11730 cut-off events. For 506495/506503 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 78933 event pairs, 3928 based on Foata normal form. 23/11753 useless extension candidates. Maximal degree in co-relation 83627. Up to 11199 conditions per place. [2024-06-28 00:21:35,880 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 261 selfloop transitions, 57 changer transitions 2/323 dead transitions. [2024-06-28 00:21:35,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 323 transitions, 4901 flow [2024-06-28 00:21:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:21:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:21:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:21:35,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38482384823848237 [2024-06-28 00:21:35,882 INFO L175 Difference]: Start difference. First operand has 215 places, 278 transitions, 3647 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:21:35,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 323 transitions, 4901 flow [2024-06-28 00:21:36,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 323 transitions, 4823 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:21:36,873 INFO L231 Difference]: Finished difference. Result has 219 places, 281 transitions, 3747 flow [2024-06-28 00:21:36,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3747, PETRI_PLACES=219, PETRI_TRANSITIONS=281} [2024-06-28 00:21:36,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 00:21:36,874 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 281 transitions, 3747 flow [2024-06-28 00:21:36,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:36,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:36,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:36,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:21:36,874 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:36,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:36,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1284699163, now seen corresponding path program 2 times [2024-06-28 00:21:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:36,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097299435] [2024-06-28 00:21:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:40,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097299435] [2024-06-28 00:21:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097299435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:40,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934915994] [2024-06-28 00:21:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:40,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:40,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:40,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:40,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 281 transitions, 3747 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:40,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:40,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:40,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:43,989 INFO L124 PetriNetUnfolderBase]: 7369/11784 cut-off events. [2024-06-28 00:21:43,989 INFO L125 PetriNetUnfolderBase]: For 477276/477284 co-relation queries the response was YES. [2024-06-28 00:21:44,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83895 conditions, 11784 events. 7369/11784 cut-off events. For 477276/477284 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 79163 event pairs, 3988 based on Foata normal form. 15/11799 useless extension candidates. Maximal degree in co-relation 83784. Up to 11469 conditions per place. [2024-06-28 00:21:44,100 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 266 selfloop transitions, 57 changer transitions 2/328 dead transitions. [2024-06-28 00:21:44,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 328 transitions, 4951 flow [2024-06-28 00:21:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 00:21:44,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37472283813747226 [2024-06-28 00:21:44,102 INFO L175 Difference]: Start difference. First operand has 219 places, 281 transitions, 3747 flow. Second operand 11 states and 169 transitions. [2024-06-28 00:21:44,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 328 transitions, 4951 flow [2024-06-28 00:21:44,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 328 transitions, 4849 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:44,938 INFO L231 Difference]: Finished difference. Result has 225 places, 292 transitions, 3928 flow [2024-06-28 00:21:44,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3654, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3928, PETRI_PLACES=225, PETRI_TRANSITIONS=292} [2024-06-28 00:21:44,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-06-28 00:21:44,939 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 292 transitions, 3928 flow [2024-06-28 00:21:44,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:44,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:44,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:21:44,939 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:44,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1582023453, now seen corresponding path program 3 times [2024-06-28 00:21:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:44,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317180328] [2024-06-28 00:21:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:49,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:49,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317180328] [2024-06-28 00:21:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317180328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:49,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711607190] [2024-06-28 00:21:49,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:49,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:49,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:49,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 292 transitions, 3928 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:52,227 INFO L124 PetriNetUnfolderBase]: 7415/11858 cut-off events. [2024-06-28 00:21:52,227 INFO L125 PetriNetUnfolderBase]: For 500607/500615 co-relation queries the response was YES. [2024-06-28 00:21:52,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85018 conditions, 11858 events. 7415/11858 cut-off events. For 500607/500615 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 79425 event pairs, 3527 based on Foata normal form. 20/11878 useless extension candidates. Maximal degree in co-relation 84906. Up to 11317 conditions per place. [2024-06-28 00:21:52,391 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 281 selfloop transitions, 46 changer transitions 1/331 dead transitions. [2024-06-28 00:21:52,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 331 transitions, 5053 flow [2024-06-28 00:21:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:21:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:21:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:21:52,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-28 00:21:52,410 INFO L175 Difference]: Start difference. First operand has 225 places, 292 transitions, 3928 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:21:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 331 transitions, 5053 flow [2024-06-28 00:21:53,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 331 transitions, 4960 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:21:53,307 INFO L231 Difference]: Finished difference. Result has 229 places, 295 transitions, 3971 flow [2024-06-28 00:21:53,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3971, PETRI_PLACES=229, PETRI_TRANSITIONS=295} [2024-06-28 00:21:53,307 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-28 00:21:53,307 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 295 transitions, 3971 flow [2024-06-28 00:21:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:53,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:53,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:21:53,308 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:53,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1582321983, now seen corresponding path program 4 times [2024-06-28 00:21:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461397607] [2024-06-28 00:21:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461397607] [2024-06-28 00:21:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461397607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:21:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477132721] [2024-06-28 00:21:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:57,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:21:57,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:21:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:21:57,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:21:57,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 295 transitions, 3971 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:57,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:57,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:21:57,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:00,574 INFO L124 PetriNetUnfolderBase]: 7415/11866 cut-off events. [2024-06-28 00:22:00,575 INFO L125 PetriNetUnfolderBase]: For 508541/508549 co-relation queries the response was YES. [2024-06-28 00:22:00,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85218 conditions, 11866 events. 7415/11866 cut-off events. For 508541/508549 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 79530 event pairs, 3502 based on Foata normal form. 20/11886 useless extension candidates. Maximal degree in co-relation 85104. Up to 11321 conditions per place. [2024-06-28 00:22:00,700 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 286 selfloop transitions, 54 changer transitions 1/344 dead transitions. [2024-06-28 00:22:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 344 transitions, 5334 flow [2024-06-28 00:22:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:22:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:22:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-28 00:22:00,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3617886178861789 [2024-06-28 00:22:00,702 INFO L175 Difference]: Start difference. First operand has 229 places, 295 transitions, 3971 flow. Second operand 12 states and 178 transitions. [2024-06-28 00:22:00,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 344 transitions, 5334 flow [2024-06-28 00:22:01,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 344 transitions, 5250 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:01,570 INFO L231 Difference]: Finished difference. Result has 235 places, 301 transitions, 4107 flow [2024-06-28 00:22:01,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4107, PETRI_PLACES=235, PETRI_TRANSITIONS=301} [2024-06-28 00:22:01,571 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-28 00:22:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 301 transitions, 4107 flow [2024-06-28 00:22:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:01,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:01,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:01,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:22:01,572 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:01,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 898795035, now seen corresponding path program 5 times [2024-06-28 00:22:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:01,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671076338] [2024-06-28 00:22:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671076338] [2024-06-28 00:22:05,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671076338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:05,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770326197] [2024-06-28 00:22:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:05,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:05,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 301 transitions, 4107 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:05,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:05,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:05,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:08,361 INFO L124 PetriNetUnfolderBase]: 7315/11700 cut-off events. [2024-06-28 00:22:08,362 INFO L125 PetriNetUnfolderBase]: For 506616/506635 co-relation queries the response was YES. [2024-06-28 00:22:08,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84007 conditions, 11700 events. 7315/11700 cut-off events. For 506616/506635 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 78221 event pairs, 3560 based on Foata normal form. 22/11722 useless extension candidates. Maximal degree in co-relation 83892. Up to 11479 conditions per place. [2024-06-28 00:22:08,524 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 281 selfloop transitions, 37 changer transitions 2/323 dead transitions. [2024-06-28 00:22:08,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 323 transitions, 4959 flow [2024-06-28 00:22:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:22:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:22:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-28 00:22:08,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34417344173441733 [2024-06-28 00:22:08,534 INFO L175 Difference]: Start difference. First operand has 235 places, 301 transitions, 4107 flow. Second operand 9 states and 127 transitions. [2024-06-28 00:22:08,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 323 transitions, 4959 flow [2024-06-28 00:22:09,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 323 transitions, 4867 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:22:09,624 INFO L231 Difference]: Finished difference. Result has 236 places, 299 transitions, 4067 flow [2024-06-28 00:22:09,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4067, PETRI_PLACES=236, PETRI_TRANSITIONS=299} [2024-06-28 00:22:09,625 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-28 00:22:09,625 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 299 transitions, 4067 flow [2024-06-28 00:22:09,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:09,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:09,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:09,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:22:09,626 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:09,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash 898675065, now seen corresponding path program 6 times [2024-06-28 00:22:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:09,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559609736] [2024-06-28 00:22:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:13,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559609736] [2024-06-28 00:22:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559609736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395514163] [2024-06-28 00:22:13,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:13,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:13,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:13,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:13,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 299 transitions, 4067 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:13,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:13,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:13,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:16,597 INFO L124 PetriNetUnfolderBase]: 6988/11035 cut-off events. [2024-06-28 00:22:16,598 INFO L125 PetriNetUnfolderBase]: For 507507/507513 co-relation queries the response was YES. [2024-06-28 00:22:16,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81259 conditions, 11035 events. 6988/11035 cut-off events. For 507507/507513 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 71262 event pairs, 2435 based on Foata normal form. 10/11045 useless extension candidates. Maximal degree in co-relation 81143. Up to 10157 conditions per place. [2024-06-28 00:22:16,724 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 241 selfloop transitions, 93 changer transitions 17/354 dead transitions. [2024-06-28 00:22:16,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 354 transitions, 5560 flow [2024-06-28 00:22:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:22:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:22:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:22:16,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2024-06-28 00:22:16,726 INFO L175 Difference]: Start difference. First operand has 236 places, 299 transitions, 4067 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:22:16,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 354 transitions, 5560 flow [2024-06-28 00:22:17,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 354 transitions, 5350 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 00:22:17,610 INFO L231 Difference]: Finished difference. Result has 239 places, 302 transitions, 4216 flow [2024-06-28 00:22:17,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3893, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4216, PETRI_PLACES=239, PETRI_TRANSITIONS=302} [2024-06-28 00:22:17,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 00:22:17,611 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 302 transitions, 4216 flow [2024-06-28 00:22:17,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:17,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:17,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:17,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:22:17,611 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:17,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 826592573, now seen corresponding path program 1 times [2024-06-28 00:22:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026291246] [2024-06-28 00:22:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026291246] [2024-06-28 00:22:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026291246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:22,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626668069] [2024-06-28 00:22:22,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:22,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:22,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 302 transitions, 4216 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:22,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:22,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:22,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:25,421 INFO L124 PetriNetUnfolderBase]: 6004/9488 cut-off events. [2024-06-28 00:22:25,421 INFO L125 PetriNetUnfolderBase]: For 508513/508521 co-relation queries the response was YES. [2024-06-28 00:22:25,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74478 conditions, 9488 events. 6004/9488 cut-off events. For 508513/508521 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 59997 event pairs, 2788 based on Foata normal form. 12/9500 useless extension candidates. Maximal degree in co-relation 74358. Up to 9125 conditions per place. [2024-06-28 00:22:25,525 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 281 selfloop transitions, 51 changer transitions 0/335 dead transitions. [2024-06-28 00:22:25,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 335 transitions, 5254 flow [2024-06-28 00:22:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:22:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:22:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 00:22:25,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-28 00:22:25,527 INFO L175 Difference]: Start difference. First operand has 239 places, 302 transitions, 4216 flow. Second operand 8 states and 134 transitions. [2024-06-28 00:22:25,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 335 transitions, 5254 flow [2024-06-28 00:22:26,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 335 transitions, 5091 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:22:26,420 INFO L231 Difference]: Finished difference. Result has 240 places, 302 transitions, 4161 flow [2024-06-28 00:22:26,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4161, PETRI_PLACES=240, PETRI_TRANSITIONS=302} [2024-06-28 00:22:26,421 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 00:22:26,421 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 302 transitions, 4161 flow [2024-06-28 00:22:26,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:26,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:26,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:26,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:22:26,421 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:26,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 953074433, now seen corresponding path program 2 times [2024-06-28 00:22:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:26,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445371905] [2024-06-28 00:22:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445371905] [2024-06-28 00:22:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445371905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191266834] [2024-06-28 00:22:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:31,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:31,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:31,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 302 transitions, 4161 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:31,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:31,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:31,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:34,048 INFO L124 PetriNetUnfolderBase]: 6034/9530 cut-off events. [2024-06-28 00:22:34,048 INFO L125 PetriNetUnfolderBase]: For 524771/524779 co-relation queries the response was YES. [2024-06-28 00:22:34,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74878 conditions, 9530 events. 6034/9530 cut-off events. For 524771/524779 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60188 event pairs, 2816 based on Foata normal form. 12/9542 useless extension candidates. Maximal degree in co-relation 74758. Up to 9147 conditions per place. [2024-06-28 00:22:34,182 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 274 selfloop transitions, 57 changer transitions 0/334 dead transitions. [2024-06-28 00:22:34,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 334 transitions, 5288 flow [2024-06-28 00:22:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:22:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:22:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:22:34,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-28 00:22:34,185 INFO L175 Difference]: Start difference. First operand has 240 places, 302 transitions, 4161 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:22:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 334 transitions, 5288 flow [2024-06-28 00:22:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 334 transitions, 5135 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:22:35,254 INFO L231 Difference]: Finished difference. Result has 242 places, 308 transitions, 4212 flow [2024-06-28 00:22:35,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4020, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4212, PETRI_PLACES=242, PETRI_TRANSITIONS=308} [2024-06-28 00:22:35,255 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 200 predicate places. [2024-06-28 00:22:35,255 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 308 transitions, 4212 flow [2024-06-28 00:22:35,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:35,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:35,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:35,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:22:35,256 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:35,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1254341919, now seen corresponding path program 7 times [2024-06-28 00:22:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023375947] [2024-06-28 00:22:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:39,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023375947] [2024-06-28 00:22:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023375947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:39,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170878473] [2024-06-28 00:22:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:39,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:39,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:39,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:39,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 308 transitions, 4212 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:39,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:39,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:39,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:42,271 INFO L124 PetriNetUnfolderBase]: 6094/9614 cut-off events. [2024-06-28 00:22:42,271 INFO L125 PetriNetUnfolderBase]: For 550100/550108 co-relation queries the response was YES. [2024-06-28 00:22:42,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75910 conditions, 9614 events. 6094/9614 cut-off events. For 550100/550108 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60649 event pairs, 2645 based on Foata normal form. 20/9634 useless extension candidates. Maximal degree in co-relation 75788. Up to 8411 conditions per place. [2024-06-28 00:22:42,376 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 250 selfloop transitions, 102 changer transitions 0/355 dead transitions. [2024-06-28 00:22:42,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 355 transitions, 5802 flow [2024-06-28 00:22:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:22:42,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:22:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 00:22:42,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37472283813747226 [2024-06-28 00:22:42,377 INFO L175 Difference]: Start difference. First operand has 242 places, 308 transitions, 4212 flow. Second operand 11 states and 169 transitions. [2024-06-28 00:22:42,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 355 transitions, 5802 flow [2024-06-28 00:22:43,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 355 transitions, 5710 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:22:43,325 INFO L231 Difference]: Finished difference. Result has 249 places, 314 transitions, 4387 flow [2024-06-28 00:22:43,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4387, PETRI_PLACES=249, PETRI_TRANSITIONS=314} [2024-06-28 00:22:43,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 00:22:43,326 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 314 transitions, 4387 flow [2024-06-28 00:22:43,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:43,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:43,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:43,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:22:43,327 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:43,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash 491568153, now seen corresponding path program 8 times [2024-06-28 00:22:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229222526] [2024-06-28 00:22:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229222526] [2024-06-28 00:22:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229222526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:46,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:46,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:46,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897442028] [2024-06-28 00:22:46,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:46,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:46,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:46,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:46,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 314 transitions, 4387 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:46,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:46,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:46,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:49,757 INFO L124 PetriNetUnfolderBase]: 6082/9581 cut-off events. [2024-06-28 00:22:49,758 INFO L125 PetriNetUnfolderBase]: For 546091/546097 co-relation queries the response was YES. [2024-06-28 00:22:49,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76254 conditions, 9581 events. 6082/9581 cut-off events. For 546091/546097 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 60036 event pairs, 1916 based on Foata normal form. 7/9588 useless extension candidates. Maximal degree in co-relation 76131. Up to 7931 conditions per place. [2024-06-28 00:22:49,897 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 205 selfloop transitions, 152 changer transitions 0/360 dead transitions. [2024-06-28 00:22:49,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 360 transitions, 6101 flow [2024-06-28 00:22:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:22:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:22:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-28 00:22:49,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3699186991869919 [2024-06-28 00:22:49,899 INFO L175 Difference]: Start difference. First operand has 249 places, 314 transitions, 4387 flow. Second operand 12 states and 182 transitions. [2024-06-28 00:22:49,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 360 transitions, 6101 flow [2024-06-28 00:22:50,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 360 transitions, 5945 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:22:50,994 INFO L231 Difference]: Finished difference. Result has 255 places, 320 transitions, 4707 flow [2024-06-28 00:22:50,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4707, PETRI_PLACES=255, PETRI_TRANSITIONS=320} [2024-06-28 00:22:50,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-28 00:22:50,995 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 320 transitions, 4707 flow [2024-06-28 00:22:50,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:50,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:50,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:22:50,995 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:50,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:50,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1170873993, now seen corresponding path program 3 times [2024-06-28 00:22:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:50,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333506887] [2024-06-28 00:22:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:50,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:54,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333506887] [2024-06-28 00:22:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333506887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:54,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:54,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:22:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334855547] [2024-06-28 00:22:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:22:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:22:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:22:54,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:22:54,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 320 transitions, 4707 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:54,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:22:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:58,478 INFO L124 PetriNetUnfolderBase]: 6112/9647 cut-off events. [2024-06-28 00:22:58,479 INFO L125 PetriNetUnfolderBase]: For 573988/574018 co-relation queries the response was YES. [2024-06-28 00:22:58,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78930 conditions, 9647 events. 6112/9647 cut-off events. For 573988/574018 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60951 event pairs, 2852 based on Foata normal form. 26/9673 useless extension candidates. Maximal degree in co-relation 78805. Up to 9237 conditions per place. [2024-06-28 00:22:58,635 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 283 selfloop transitions, 64 changer transitions 0/350 dead transitions. [2024-06-28 00:22:58,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 350 transitions, 5886 flow [2024-06-28 00:22:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:22:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:22:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-28 00:22:58,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34146341463414637 [2024-06-28 00:22:58,637 INFO L175 Difference]: Start difference. First operand has 255 places, 320 transitions, 4707 flow. Second operand 10 states and 140 transitions. [2024-06-28 00:22:58,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 350 transitions, 5886 flow [2024-06-28 00:22:59,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 350 transitions, 5591 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 00:22:59,841 INFO L231 Difference]: Finished difference. Result has 255 places, 326 transitions, 4633 flow [2024-06-28 00:22:59,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4633, PETRI_PLACES=255, PETRI_TRANSITIONS=326} [2024-06-28 00:22:59,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 213 predicate places. [2024-06-28 00:22:59,842 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 326 transitions, 4633 flow [2024-06-28 00:22:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:59,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:59,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:59,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:22:59,842 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1170874179, now seen corresponding path program 9 times [2024-06-28 00:22:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876181598] [2024-06-28 00:22:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:03,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:03,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876181598] [2024-06-28 00:23:03,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876181598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:03,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:03,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:03,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189275566] [2024-06-28 00:23:03,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:03,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:03,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:03,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:03,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:03,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 326 transitions, 4633 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:03,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:03,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:03,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:06,768 INFO L124 PetriNetUnfolderBase]: 6132/9675 cut-off events. [2024-06-28 00:23:06,769 INFO L125 PetriNetUnfolderBase]: For 588249/588279 co-relation queries the response was YES. [2024-06-28 00:23:06,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78831 conditions, 9675 events. 6132/9675 cut-off events. For 588249/588279 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61163 event pairs, 2856 based on Foata normal form. 26/9701 useless extension candidates. Maximal degree in co-relation 78707. Up to 9249 conditions per place. [2024-06-28 00:23:06,888 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 281 selfloop transitions, 67 changer transitions 0/351 dead transitions. [2024-06-28 00:23:06,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 351 transitions, 5764 flow [2024-06-28 00:23:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 00:23:06,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523035230352303 [2024-06-28 00:23:06,893 INFO L175 Difference]: Start difference. First operand has 255 places, 326 transitions, 4633 flow. Second operand 9 states and 130 transitions. [2024-06-28 00:23:06,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 351 transitions, 5764 flow [2024-06-28 00:23:08,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 351 transitions, 5591 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:23:08,043 INFO L231 Difference]: Finished difference. Result has 257 places, 329 transitions, 4637 flow [2024-06-28 00:23:08,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4637, PETRI_PLACES=257, PETRI_TRANSITIONS=329} [2024-06-28 00:23:08,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 00:23:08,044 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 329 transitions, 4637 flow [2024-06-28 00:23:08,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:08,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:08,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:08,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:23:08,045 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:08,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -993742659, now seen corresponding path program 10 times [2024-06-28 00:23:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:08,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473846464] [2024-06-28 00:23:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:08,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:12,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:12,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473846464] [2024-06-28 00:23:12,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473846464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:12,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:12,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:12,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523016254] [2024-06-28 00:23:12,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:12,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:12,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:12,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 329 transitions, 4637 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:12,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:12,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:12,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:15,585 INFO L124 PetriNetUnfolderBase]: 6120/9659 cut-off events. [2024-06-28 00:23:15,585 INFO L125 PetriNetUnfolderBase]: For 595853/595883 co-relation queries the response was YES. [2024-06-28 00:23:15,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78539 conditions, 9659 events. 6120/9659 cut-off events. For 595853/595883 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61103 event pairs, 2854 based on Foata normal form. 26/9685 useless extension candidates. Maximal degree in co-relation 78415. Up to 9201 conditions per place. [2024-06-28 00:23:15,702 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 278 selfloop transitions, 72 changer transitions 0/353 dead transitions. [2024-06-28 00:23:15,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 353 transitions, 5801 flow [2024-06-28 00:23:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:23:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:23:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:23:15,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439024390243902 [2024-06-28 00:23:15,704 INFO L175 Difference]: Start difference. First operand has 257 places, 329 transitions, 4637 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:23:15,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 353 transitions, 5801 flow [2024-06-28 00:23:17,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 353 transitions, 5653 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:23:17,048 INFO L231 Difference]: Finished difference. Result has 260 places, 329 transitions, 4639 flow [2024-06-28 00:23:17,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4489, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4639, PETRI_PLACES=260, PETRI_TRANSITIONS=329} [2024-06-28 00:23:17,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:23:17,049 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 329 transitions, 4639 flow [2024-06-28 00:23:17,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:17,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:17,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:17,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:23:17,050 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:17,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1778218313, now seen corresponding path program 4 times [2024-06-28 00:23:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746558680] [2024-06-28 00:23:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:21,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:21,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746558680] [2024-06-28 00:23:21,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746558680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:21,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:21,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:21,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162518283] [2024-06-28 00:23:21,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:21,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:21,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:21,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 329 transitions, 4639 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:21,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:21,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:21,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:25,168 INFO L124 PetriNetUnfolderBase]: 6108/9643 cut-off events. [2024-06-28 00:23:25,168 INFO L125 PetriNetUnfolderBase]: For 604473/604503 co-relation queries the response was YES. [2024-06-28 00:23:25,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78412 conditions, 9643 events. 6108/9643 cut-off events. For 604473/604503 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 61015 event pairs, 2848 based on Foata normal form. 26/9669 useless extension candidates. Maximal degree in co-relation 78287. Up to 9241 conditions per place. [2024-06-28 00:23:25,267 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 282 selfloop transitions, 64 changer transitions 0/349 dead transitions. [2024-06-28 00:23:25,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 349 transitions, 5583 flow [2024-06-28 00:23:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:23:25,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34688346883468835 [2024-06-28 00:23:25,269 INFO L175 Difference]: Start difference. First operand has 260 places, 329 transitions, 4639 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:23:25,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 349 transitions, 5583 flow [2024-06-28 00:23:26,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 349 transitions, 5351 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 00:23:26,429 INFO L231 Difference]: Finished difference. Result has 257 places, 329 transitions, 4541 flow [2024-06-28 00:23:26,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4407, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4541, PETRI_PLACES=257, PETRI_TRANSITIONS=329} [2024-06-28 00:23:26,430 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 00:23:26,430 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 329 transitions, 4541 flow [2024-06-28 00:23:26,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:26,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:26,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:23:26,430 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:26,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -771142943, now seen corresponding path program 1 times [2024-06-28 00:23:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068397048] [2024-06-28 00:23:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:30,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068397048] [2024-06-28 00:23:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068397048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:30,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:30,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142336970] [2024-06-28 00:23:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:30,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:30,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:30,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 329 transitions, 4541 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:33,702 INFO L124 PetriNetUnfolderBase]: 6126/9649 cut-off events. [2024-06-28 00:23:33,703 INFO L125 PetriNetUnfolderBase]: For 625553/625559 co-relation queries the response was YES. [2024-06-28 00:23:33,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78390 conditions, 9649 events. 6126/9649 cut-off events. For 625553/625559 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60760 event pairs, 2354 based on Foata normal form. 15/9664 useless extension candidates. Maximal degree in co-relation 78265. Up to 9406 conditions per place. [2024-06-28 00:23:33,832 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 304 selfloop transitions, 45 changer transitions 0/352 dead transitions. [2024-06-28 00:23:33,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 352 transitions, 5533 flow [2024-06-28 00:23:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-28 00:23:33,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34688346883468835 [2024-06-28 00:23:33,833 INFO L175 Difference]: Start difference. First operand has 257 places, 329 transitions, 4541 flow. Second operand 9 states and 128 transitions. [2024-06-28 00:23:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 352 transitions, 5533 flow [2024-06-28 00:23:34,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 352 transitions, 5369 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:23:34,991 INFO L231 Difference]: Finished difference. Result has 257 places, 330 transitions, 4497 flow [2024-06-28 00:23:34,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4497, PETRI_PLACES=257, PETRI_TRANSITIONS=330} [2024-06-28 00:23:34,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-28 00:23:34,992 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 330 transitions, 4497 flow [2024-06-28 00:23:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:34,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:34,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:23:34,992 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:34,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1687936063, now seen corresponding path program 2 times [2024-06-28 00:23:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:34,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486380569] [2024-06-28 00:23:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486380569] [2024-06-28 00:23:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486380569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:39,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:39,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:23:39,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288874873] [2024-06-28 00:23:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:39,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:23:39,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:23:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:23:39,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:39,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 330 transitions, 4497 flow. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:39,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:39,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:39,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:41,969 INFO L124 PetriNetUnfolderBase]: 6154/9693 cut-off events. [2024-06-28 00:23:41,970 INFO L125 PetriNetUnfolderBase]: For 633997/634003 co-relation queries the response was YES. [2024-06-28 00:23:42,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78879 conditions, 9693 events. 6154/9693 cut-off events. For 633997/634003 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61077 event pairs, 2354 based on Foata normal form. 11/9704 useless extension candidates. Maximal degree in co-relation 78753. Up to 9412 conditions per place. [2024-06-28 00:23:42,130 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 307 selfloop transitions, 47 changer transitions 0/357 dead transitions. [2024-06-28 00:23:42,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 357 transitions, 5523 flow [2024-06-28 00:23:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 00:23:42,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35501355013550134 [2024-06-28 00:23:42,131 INFO L175 Difference]: Start difference. First operand has 257 places, 330 transitions, 4497 flow. Second operand 9 states and 131 transitions. [2024-06-28 00:23:42,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 357 transitions, 5523 flow [2024-06-28 00:23:43,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 357 transitions, 5423 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:23:43,836 INFO L231 Difference]: Finished difference. Result has 260 places, 332 transitions, 4538 flow [2024-06-28 00:23:43,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4538, PETRI_PLACES=260, PETRI_TRANSITIONS=332} [2024-06-28 00:23:43,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:23:43,838 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 332 transitions, 4538 flow [2024-06-28 00:23:43,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:43,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:43,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:43,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:23:43,838 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:43,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash -757321283, now seen corresponding path program 3 times [2024-06-28 00:23:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:43,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780237515] [2024-06-28 00:23:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:48,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:48,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780237515] [2024-06-28 00:23:48,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780237515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:48,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:48,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:48,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43829649] [2024-06-28 00:23:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:48,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:48,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:48,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:48,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 332 transitions, 4538 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:48,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:48,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:50,867 INFO L124 PetriNetUnfolderBase]: 6164/9711 cut-off events. [2024-06-28 00:23:50,868 INFO L125 PetriNetUnfolderBase]: For 634768/634774 co-relation queries the response was YES. [2024-06-28 00:23:50,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78627 conditions, 9711 events. 6164/9711 cut-off events. For 634768/634774 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 61259 event pairs, 2268 based on Foata normal form. 11/9722 useless extension candidates. Maximal degree in co-relation 78499. Up to 9276 conditions per place. [2024-06-28 00:23:50,999 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 306 selfloop transitions, 53 changer transitions 0/362 dead transitions. [2024-06-28 00:23:50,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 362 transitions, 5555 flow [2024-06-28 00:23:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:23:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:23:51,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 00:23:51,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34959349593495936 [2024-06-28 00:23:51,000 INFO L175 Difference]: Start difference. First operand has 260 places, 332 transitions, 4538 flow. Second operand 9 states and 129 transitions. [2024-06-28 00:23:51,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 362 transitions, 5555 flow [2024-06-28 00:23:52,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 362 transitions, 5452 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:52,325 INFO L231 Difference]: Finished difference. Result has 265 places, 335 transitions, 4606 flow [2024-06-28 00:23:52,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4435, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4606, PETRI_PLACES=265, PETRI_TRANSITIONS=335} [2024-06-28 00:23:52,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 00:23:52,326 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 335 transitions, 4606 flow [2024-06-28 00:23:52,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:52,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:52,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:23:52,327 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:52,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1372243785, now seen corresponding path program 1 times [2024-06-28 00:23:52,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:52,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427764728] [2024-06-28 00:23:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:52,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427764728] [2024-06-28 00:23:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427764728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:23:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873337838] [2024-06-28 00:23:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:23:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:23:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:23:58,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:23:58,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 335 transitions, 4606 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:58,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:58,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:23:58,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:00,794 INFO L124 PetriNetUnfolderBase]: 6212/9812 cut-off events. [2024-06-28 00:24:00,794 INFO L125 PetriNetUnfolderBase]: For 661185/661185 co-relation queries the response was YES. [2024-06-28 00:24:00,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79561 conditions, 9812 events. 6212/9812 cut-off events. For 661185/661185 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 62213 event pairs, 3522 based on Foata normal form. 8/9820 useless extension candidates. Maximal degree in co-relation 79430. Up to 9532 conditions per place. [2024-06-28 00:24:00,912 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 345 selfloop transitions, 22 changer transitions 0/370 dead transitions. [2024-06-28 00:24:00,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 370 transitions, 5762 flow [2024-06-28 00:24:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:24:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:24:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 00:24:00,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41114982578397213 [2024-06-28 00:24:00,913 INFO L175 Difference]: Start difference. First operand has 265 places, 335 transitions, 4606 flow. Second operand 7 states and 118 transitions. [2024-06-28 00:24:00,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 370 transitions, 5762 flow [2024-06-28 00:24:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 370 transitions, 5654 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:02,314 INFO L231 Difference]: Finished difference. Result has 267 places, 337 transitions, 4568 flow [2024-06-28 00:24:02,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4568, PETRI_PLACES=267, PETRI_TRANSITIONS=337} [2024-06-28 00:24:02,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 00:24:02,315 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 337 transitions, 4568 flow [2024-06-28 00:24:02,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:02,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:02,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:02,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:24:02,315 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:02,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1253911205, now seen corresponding path program 1 times [2024-06-28 00:24:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023696791] [2024-06-28 00:24:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:07,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023696791] [2024-06-28 00:24:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023696791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:07,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:07,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:07,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190148465] [2024-06-28 00:24:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:07,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:07,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:07,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 337 transitions, 4568 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:07,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:07,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:07,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:10,845 INFO L124 PetriNetUnfolderBase]: 6194/9786 cut-off events. [2024-06-28 00:24:10,845 INFO L125 PetriNetUnfolderBase]: For 660590/660590 co-relation queries the response was YES. [2024-06-28 00:24:10,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78997 conditions, 9786 events. 6194/9786 cut-off events. For 660590/660590 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 61990 event pairs, 3512 based on Foata normal form. 8/9794 useless extension candidates. Maximal degree in co-relation 78865. Up to 9524 conditions per place. [2024-06-28 00:24:11,006 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 344 selfloop transitions, 22 changer transitions 0/369 dead transitions. [2024-06-28 00:24:11,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 369 transitions, 5548 flow [2024-06-28 00:24:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 00:24:11,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:24:11,008 INFO L175 Difference]: Start difference. First operand has 267 places, 337 transitions, 4568 flow. Second operand 8 states and 123 transitions. [2024-06-28 00:24:11,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 369 transitions, 5548 flow [2024-06-28 00:24:12,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 369 transitions, 5517 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 00:24:12,659 INFO L231 Difference]: Finished difference. Result has 272 places, 337 transitions, 4585 flow [2024-06-28 00:24:12,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4585, PETRI_PLACES=272, PETRI_TRANSITIONS=337} [2024-06-28 00:24:12,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 00:24:12,660 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 337 transitions, 4585 flow [2024-06-28 00:24:12,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:12,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:12,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:12,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:24:12,660 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:12,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash -812438663, now seen corresponding path program 2 times [2024-06-28 00:24:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:12,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88602654] [2024-06-28 00:24:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:17,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:17,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88602654] [2024-06-28 00:24:17,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88602654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:17,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:17,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:17,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273924313] [2024-06-28 00:24:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:17,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:17,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:17,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:17,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:17,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 337 transitions, 4585 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:17,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:17,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:17,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:19,725 INFO L124 PetriNetUnfolderBase]: 6176/9763 cut-off events. [2024-06-28 00:24:19,725 INFO L125 PetriNetUnfolderBase]: For 661353/661361 co-relation queries the response was YES. [2024-06-28 00:24:19,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78678 conditions, 9763 events. 6176/9763 cut-off events. For 661353/661361 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61824 event pairs, 3477 based on Foata normal form. 16/9779 useless extension candidates. Maximal degree in co-relation 78544. Up to 9452 conditions per place. [2024-06-28 00:24:19,874 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 338 selfloop transitions, 24 changer transitions 0/365 dead transitions. [2024-06-28 00:24:19,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 365 transitions, 5511 flow [2024-06-28 00:24:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:24:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:24:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 00:24:19,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597560975609756 [2024-06-28 00:24:19,876 INFO L175 Difference]: Start difference. First operand has 272 places, 337 transitions, 4585 flow. Second operand 8 states and 118 transitions. [2024-06-28 00:24:19,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 365 transitions, 5511 flow [2024-06-28 00:24:21,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 365 transitions, 5473 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:24:21,744 INFO L231 Difference]: Finished difference. Result has 275 places, 337 transitions, 4599 flow [2024-06-28 00:24:21,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4599, PETRI_PLACES=275, PETRI_TRANSITIONS=337} [2024-06-28 00:24:21,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-28 00:24:21,745 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 337 transitions, 4599 flow [2024-06-28 00:24:21,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:21,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:21,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:21,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:24:21,745 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:21,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:21,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1061717753, now seen corresponding path program 1 times [2024-06-28 00:24:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:21,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663129863] [2024-06-28 00:24:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:21,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:26,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663129863] [2024-06-28 00:24:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663129863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:26,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100980061] [2024-06-28 00:24:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:26,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:26,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:26,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 337 transitions, 4599 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:26,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:26,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:26,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:29,760 INFO L124 PetriNetUnfolderBase]: 6184/9768 cut-off events. [2024-06-28 00:24:29,761 INFO L125 PetriNetUnfolderBase]: For 664301/664327 co-relation queries the response was YES. [2024-06-28 00:24:29,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79070 conditions, 9768 events. 6184/9768 cut-off events. For 664301/664327 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 62052 event pairs, 2801 based on Foata normal form. 26/9794 useless extension candidates. Maximal degree in co-relation 78935. Up to 9355 conditions per place. [2024-06-28 00:24:29,901 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 312 selfloop transitions, 50 changer transitions 0/365 dead transitions. [2024-06-28 00:24:29,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 365 transitions, 5569 flow [2024-06-28 00:24:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:24:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:24:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 00:24:29,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35772357723577236 [2024-06-28 00:24:29,902 INFO L175 Difference]: Start difference. First operand has 275 places, 337 transitions, 4599 flow. Second operand 9 states and 132 transitions. [2024-06-28 00:24:29,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 365 transitions, 5569 flow [2024-06-28 00:24:31,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 365 transitions, 5502 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:31,884 INFO L231 Difference]: Finished difference. Result has 277 places, 339 transitions, 4702 flow [2024-06-28 00:24:31,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4532, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4702, PETRI_PLACES=277, PETRI_TRANSITIONS=339} [2024-06-28 00:24:31,884 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 00:24:31,884 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 339 transitions, 4702 flow [2024-06-28 00:24:31,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:31,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:31,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:31,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:24:31,885 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:31,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 25471862, now seen corresponding path program 1 times [2024-06-28 00:24:31,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:31,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682116867] [2024-06-28 00:24:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:31,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682116867] [2024-06-28 00:24:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682116867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510871166] [2024-06-28 00:24:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:35,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:35,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 339 transitions, 4702 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:35,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:35,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:35,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:39,809 INFO L124 PetriNetUnfolderBase]: 6231/9825 cut-off events. [2024-06-28 00:24:39,809 INFO L125 PetriNetUnfolderBase]: For 699438/699464 co-relation queries the response was YES. [2024-06-28 00:24:39,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80242 conditions, 9825 events. 6231/9825 cut-off events. For 699438/699464 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 62532 event pairs, 2043 based on Foata normal form. 26/9851 useless extension candidates. Maximal degree in co-relation 80107. Up to 8425 conditions per place. [2024-06-28 00:24:39,932 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 272 selfloop transitions, 143 changer transitions 0/418 dead transitions. [2024-06-28 00:24:39,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 418 transitions, 6791 flow [2024-06-28 00:24:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:24:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:24:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2024-06-28 00:24:39,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853658536585366 [2024-06-28 00:24:39,934 INFO L175 Difference]: Start difference. First operand has 277 places, 339 transitions, 4702 flow. Second operand 15 states and 237 transitions. [2024-06-28 00:24:39,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 418 transitions, 6791 flow [2024-06-28 00:24:41,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 418 transitions, 6627 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 00:24:41,485 INFO L231 Difference]: Finished difference. Result has 287 places, 352 transitions, 5129 flow [2024-06-28 00:24:41,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5129, PETRI_PLACES=287, PETRI_TRANSITIONS=352} [2024-06-28 00:24:41,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:24:41,485 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 352 transitions, 5129 flow [2024-06-28 00:24:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:24:41,486 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:41,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 25770392, now seen corresponding path program 2 times [2024-06-28 00:24:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80403030] [2024-06-28 00:24:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80403030] [2024-06-28 00:24:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80403030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718861601] [2024-06-28 00:24:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:44,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:44,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 352 transitions, 5129 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:44,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:44,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:44,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:49,068 INFO L124 PetriNetUnfolderBase]: 6219/9809 cut-off events. [2024-06-28 00:24:49,068 INFO L125 PetriNetUnfolderBase]: For 712040/712066 co-relation queries the response was YES. [2024-06-28 00:24:49,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83520 conditions, 9809 events. 6219/9809 cut-off events. For 712040/712066 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 62370 event pairs, 2043 based on Foata normal form. 28/9837 useless extension candidates. Maximal degree in co-relation 83382. Up to 8421 conditions per place. [2024-06-28 00:24:49,195 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 270 selfloop transitions, 138 changer transitions 0/411 dead transitions. [2024-06-28 00:24:49,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 411 transitions, 6883 flow [2024-06-28 00:24:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:24:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:24:49,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-06-28 00:24:49,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37630662020905925 [2024-06-28 00:24:49,197 INFO L175 Difference]: Start difference. First operand has 287 places, 352 transitions, 5129 flow. Second operand 14 states and 216 transitions. [2024-06-28 00:24:49,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 411 transitions, 6883 flow [2024-06-28 00:24:50,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 411 transitions, 6443 flow, removed 107 selfloop flow, removed 10 redundant places. [2024-06-28 00:24:50,890 INFO L231 Difference]: Finished difference. Result has 291 places, 352 transitions, 4973 flow [2024-06-28 00:24:50,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4973, PETRI_PLACES=291, PETRI_TRANSITIONS=352} [2024-06-28 00:24:50,891 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 00:24:50,891 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 352 transitions, 4973 flow [2024-06-28 00:24:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:50,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:24:50,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:24:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:24:50,892 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:24:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:24:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1260651914, now seen corresponding path program 3 times [2024-06-28 00:24:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:24:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67715659] [2024-06-28 00:24:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:24:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:24:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:24:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:24:54,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:24:54,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67715659] [2024-06-28 00:24:54,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67715659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:24:54,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:24:54,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:24:54,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652127097] [2024-06-28 00:24:54,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:24:54,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:24:54,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:24:54,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:24:54,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:24:54,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:24:54,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 352 transitions, 4973 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:24:54,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:24:54,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:24:54,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:24:58,411 INFO L124 PetriNetUnfolderBase]: 6239/9841 cut-off events. [2024-06-28 00:24:58,412 INFO L125 PetriNetUnfolderBase]: For 721181/721211 co-relation queries the response was YES. [2024-06-28 00:24:58,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83570 conditions, 9841 events. 6239/9841 cut-off events. For 721181/721211 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 62360 event pairs, 2084 based on Foata normal form. 26/9867 useless extension candidates. Maximal degree in co-relation 83432. Up to 8429 conditions per place. [2024-06-28 00:24:58,584 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 247 selfloop transitions, 150 changer transitions 0/400 dead transitions. [2024-06-28 00:24:58,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 400 transitions, 6783 flow [2024-06-28 00:24:58,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:24:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:24:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2024-06-28 00:24:58,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519163763066202 [2024-06-28 00:24:58,586 INFO L175 Difference]: Start difference. First operand has 291 places, 352 transitions, 4973 flow. Second operand 14 states and 202 transitions. [2024-06-28 00:24:58,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 400 transitions, 6783 flow [2024-06-28 00:25:00,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 400 transitions, 6503 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-28 00:25:00,616 INFO L231 Difference]: Finished difference. Result has 292 places, 357 transitions, 5131 flow [2024-06-28 00:25:00,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4697, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5131, PETRI_PLACES=292, PETRI_TRANSITIONS=357} [2024-06-28 00:25:00,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-28 00:25:00,619 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 357 transitions, 5131 flow [2024-06-28 00:25:00,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:00,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:00,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:00,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:25:00,619 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:00,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:00,620 INFO L85 PathProgramCache]: Analyzing trace with hash -348264824, now seen corresponding path program 4 times [2024-06-28 00:25:00,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:00,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329223435] [2024-06-28 00:25:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:00,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:04,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329223435] [2024-06-28 00:25:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329223435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:25:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749025865] [2024-06-28 00:25:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:04,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:25:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:25:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:25:04,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:04,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 357 transitions, 5131 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:04,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:04,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:04,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:09,029 INFO L124 PetriNetUnfolderBase]: 6271/9886 cut-off events. [2024-06-28 00:25:09,029 INFO L125 PetriNetUnfolderBase]: For 742894/742924 co-relation queries the response was YES. [2024-06-28 00:25:09,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85510 conditions, 9886 events. 6271/9886 cut-off events. For 742894/742924 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 62551 event pairs, 2082 based on Foata normal form. 24/9910 useless extension candidates. Maximal degree in co-relation 85371. Up to 8445 conditions per place. [2024-06-28 00:25:09,141 INFO L140 encePairwiseOnDemand]: 26/41 looper letters, 247 selfloop transitions, 166 changer transitions 0/416 dead transitions. [2024-06-28 00:25:09,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 416 transitions, 7191 flow [2024-06-28 00:25:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 00:25:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 00:25:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 221 transitions. [2024-06-28 00:25:09,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359349593495935 [2024-06-28 00:25:09,143 INFO L175 Difference]: Start difference. First operand has 292 places, 357 transitions, 5131 flow. Second operand 15 states and 221 transitions. [2024-06-28 00:25:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 416 transitions, 7191 flow [2024-06-28 00:25:11,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 416 transitions, 6752 flow, removed 53 selfloop flow, removed 12 redundant places. [2024-06-28 00:25:11,247 INFO L231 Difference]: Finished difference. Result has 296 places, 371 transitions, 5359 flow [2024-06-28 00:25:11,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5359, PETRI_PLACES=296, PETRI_TRANSITIONS=371} [2024-06-28 00:25:11,248 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-28 00:25:11,248 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 371 transitions, 5359 flow [2024-06-28 00:25:11,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:11,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:11,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:25:11,249 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:11,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1864752913, now seen corresponding path program 2 times [2024-06-28 00:25:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726371607] [2024-06-28 00:25:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:16,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:16,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726371607] [2024-06-28 00:25:16,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726371607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:16,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:16,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:16,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382331726] [2024-06-28 00:25:16,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:16,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:16,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:16,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:16,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 371 transitions, 5359 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:16,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:16,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:16,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:19,132 INFO L124 PetriNetUnfolderBase]: 6307/9950 cut-off events. [2024-06-28 00:25:19,132 INFO L125 PetriNetUnfolderBase]: For 787550/787580 co-relation queries the response was YES. [2024-06-28 00:25:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88023 conditions, 9950 events. 6307/9950 cut-off events. For 787550/787580 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 63219 event pairs, 2846 based on Foata normal form. 24/9974 useless extension candidates. Maximal degree in co-relation 87883. Up to 9480 conditions per place. [2024-06-28 00:25:19,276 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 325 selfloop transitions, 71 changer transitions 0/399 dead transitions. [2024-06-28 00:25:19,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 399 transitions, 6571 flow [2024-06-28 00:25:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:25:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:25:19,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:25:19,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-28 00:25:19,278 INFO L175 Difference]: Start difference. First operand has 296 places, 371 transitions, 5359 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:25:19,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 399 transitions, 6571 flow [2024-06-28 00:25:21,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 399 transitions, 6085 flow, removed 98 selfloop flow, removed 11 redundant places. [2024-06-28 00:25:21,927 INFO L231 Difference]: Finished difference. Result has 294 places, 376 transitions, 5183 flow [2024-06-28 00:25:21,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4873, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5183, PETRI_PLACES=294, PETRI_TRANSITIONS=376} [2024-06-28 00:25:21,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 00:25:21,928 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 376 transitions, 5183 flow [2024-06-28 00:25:21,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:21,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:21,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:21,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:25:21,929 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:21,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1996403793, now seen corresponding path program 3 times [2024-06-28 00:25:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:21,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036193007] [2024-06-28 00:25:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:21,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036193007] [2024-06-28 00:25:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036193007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:26,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:26,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981357150] [2024-06-28 00:25:26,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:26,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:26,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:26,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:26,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:26,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 376 transitions, 5183 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:26,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:26,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:26,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:30,257 INFO L124 PetriNetUnfolderBase]: 6315/9962 cut-off events. [2024-06-28 00:25:30,258 INFO L125 PetriNetUnfolderBase]: For 813454/813484 co-relation queries the response was YES. [2024-06-28 00:25:30,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88089 conditions, 9962 events. 6315/9962 cut-off events. For 813454/813484 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 63301 event pairs, 2808 based on Foata normal form. 24/9986 useless extension candidates. Maximal degree in co-relation 87947. Up to 9115 conditions per place. [2024-06-28 00:25:30,386 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 318 selfloop transitions, 85 changer transitions 0/406 dead transitions. [2024-06-28 00:25:30,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 406 transitions, 6697 flow [2024-06-28 00:25:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:25:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:25:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 00:25:30,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604336043360434 [2024-06-28 00:25:30,388 INFO L175 Difference]: Start difference. First operand has 294 places, 376 transitions, 5183 flow. Second operand 9 states and 133 transitions. [2024-06-28 00:25:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 406 transitions, 6697 flow [2024-06-28 00:25:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 406 transitions, 6439 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 00:25:32,546 INFO L231 Difference]: Finished difference. Result has 298 places, 380 transitions, 5232 flow [2024-06-28 00:25:32,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5232, PETRI_PLACES=298, PETRI_TRANSITIONS=380} [2024-06-28 00:25:32,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 00:25:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 380 transitions, 5232 flow [2024-06-28 00:25:32,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:32,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:32,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:25:32,548 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1214512651, now seen corresponding path program 4 times [2024-06-28 00:25:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462905082] [2024-06-28 00:25:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:32,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462905082] [2024-06-28 00:25:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462905082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334505952] [2024-06-28 00:25:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:37,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:37,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:37,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:37,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 380 transitions, 5232 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:37,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:37,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:37,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:41,014 INFO L124 PetriNetUnfolderBase]: 6440/10157 cut-off events. [2024-06-28 00:25:41,014 INFO L125 PetriNetUnfolderBase]: For 844462/844492 co-relation queries the response was YES. [2024-06-28 00:25:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89698 conditions, 10157 events. 6440/10157 cut-off events. For 844462/844492 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64713 event pairs, 2803 based on Foata normal form. 24/10181 useless extension candidates. Maximal degree in co-relation 89555. Up to 9417 conditions per place. [2024-06-28 00:25:41,133 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 327 selfloop transitions, 84 changer transitions 0/414 dead transitions. [2024-06-28 00:25:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 414 transitions, 6650 flow [2024-06-28 00:25:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:25:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:25:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:25:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39939024390243905 [2024-06-28 00:25:41,135 INFO L175 Difference]: Start difference. First operand has 298 places, 380 transitions, 5232 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:25:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 414 transitions, 6650 flow [2024-06-28 00:25:43,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 414 transitions, 6342 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 00:25:43,320 INFO L231 Difference]: Finished difference. Result has 301 places, 388 transitions, 5360 flow [2024-06-28 00:25:43,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5360, PETRI_PLACES=301, PETRI_TRANSITIONS=388} [2024-06-28 00:25:43,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-28 00:25:43,321 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 388 transitions, 5360 flow [2024-06-28 00:25:43,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:43,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:43,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:43,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:25:43,322 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:43,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1275551880, now seen corresponding path program 5 times [2024-06-28 00:25:43,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130652736] [2024-06-28 00:25:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130652736] [2024-06-28 00:25:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130652736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:47,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:47,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993606480] [2024-06-28 00:25:47,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:47,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:47,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:47,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 388 transitions, 5360 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:47,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:47,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:47,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:25:51,840 INFO L124 PetriNetUnfolderBase]: 6446/10143 cut-off events. [2024-06-28 00:25:51,840 INFO L125 PetriNetUnfolderBase]: For 880957/880963 co-relation queries the response was YES. [2024-06-28 00:25:51,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90894 conditions, 10143 events. 6446/10143 cut-off events. For 880957/880963 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 64029 event pairs, 1947 based on Foata normal form. 14/10157 useless extension candidates. Maximal degree in co-relation 90749. Up to 8376 conditions per place. [2024-06-28 00:25:51,971 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 245 selfloop transitions, 197 changer transitions 0/445 dead transitions. [2024-06-28 00:25:51,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 445 transitions, 7772 flow [2024-06-28 00:25:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 00:25:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 00:25:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 238 transitions. [2024-06-28 00:25:51,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628048780487805 [2024-06-28 00:25:51,973 INFO L175 Difference]: Start difference. First operand has 301 places, 388 transitions, 5360 flow. Second operand 16 states and 238 transitions. [2024-06-28 00:25:51,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 445 transitions, 7772 flow [2024-06-28 00:25:54,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 445 transitions, 7508 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 00:25:54,775 INFO L231 Difference]: Finished difference. Result has 314 places, 398 transitions, 5798 flow [2024-06-28 00:25:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5096, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5798, PETRI_PLACES=314, PETRI_TRANSITIONS=398} [2024-06-28 00:25:54,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 00:25:54,775 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 398 transitions, 5798 flow [2024-06-28 00:25:54,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:54,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:25:54,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:25:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:25:54,776 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:25:54,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:25:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1143761574, now seen corresponding path program 1 times [2024-06-28 00:25:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:25:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817206909] [2024-06-28 00:25:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:25:54,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:25:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:25:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:25:59,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:25:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817206909] [2024-06-28 00:25:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817206909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:25:59,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:25:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:25:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44348805] [2024-06-28 00:25:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:25:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:25:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:25:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:25:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:25:59,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:25:59,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 398 transitions, 5798 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:25:59,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:25:59,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:25:59,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:03,533 INFO L124 PetriNetUnfolderBase]: 6219/9813 cut-off events. [2024-06-28 00:26:03,534 INFO L125 PetriNetUnfolderBase]: For 924955/924963 co-relation queries the response was YES. [2024-06-28 00:26:03,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88452 conditions, 9813 events. 6219/9813 cut-off events. For 924955/924963 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 62040 event pairs, 1621 based on Foata normal form. 152/9965 useless extension candidates. Maximal degree in co-relation 88304. Up to 6006 conditions per place. [2024-06-28 00:26:03,667 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 336 selfloop transitions, 52 changer transitions 87/478 dead transitions. [2024-06-28 00:26:03,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 478 transitions, 7697 flow [2024-06-28 00:26:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:26:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:26:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 229 transitions. [2024-06-28 00:26:03,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3989547038327526 [2024-06-28 00:26:03,669 INFO L175 Difference]: Start difference. First operand has 314 places, 398 transitions, 5798 flow. Second operand 14 states and 229 transitions. [2024-06-28 00:26:03,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 478 transitions, 7697 flow [2024-06-28 00:26:05,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 478 transitions, 6987 flow, removed 138 selfloop flow, removed 12 redundant places. [2024-06-28 00:26:05,708 INFO L231 Difference]: Finished difference. Result has 317 places, 345 transitions, 4419 flow [2024-06-28 00:26:05,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5068, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4419, PETRI_PLACES=317, PETRI_TRANSITIONS=345} [2024-06-28 00:26:05,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-28 00:26:05,709 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 345 transitions, 4419 flow [2024-06-28 00:26:05,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:05,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:05,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:26:05,709 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:05,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1914203000, now seen corresponding path program 2 times [2024-06-28 00:26:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777749413] [2024-06-28 00:26:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:11,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:11,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777749413] [2024-06-28 00:26:11,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777749413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:11,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:11,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:26:11,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69669129] [2024-06-28 00:26:11,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:11,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:26:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:11,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:26:11,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:26:11,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:26:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 345 transitions, 4419 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:11,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:11,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:26:11,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:14,262 INFO L124 PetriNetUnfolderBase]: 5463/8601 cut-off events. [2024-06-28 00:26:14,262 INFO L125 PetriNetUnfolderBase]: For 1064201/1064206 co-relation queries the response was YES. [2024-06-28 00:26:14,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84065 conditions, 8601 events. 5463/8601 cut-off events. For 1064201/1064206 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 52629 event pairs, 1585 based on Foata normal form. 57/8658 useless extension candidates. Maximal degree in co-relation 83915. Up to 6669 conditions per place. [2024-06-28 00:26:14,374 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 342 selfloop transitions, 46 changer transitions 30/421 dead transitions. [2024-06-28 00:26:14,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 421 transitions, 6333 flow [2024-06-28 00:26:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:26:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:26:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 00:26:14,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39227642276422764 [2024-06-28 00:26:14,375 INFO L175 Difference]: Start difference. First operand has 317 places, 345 transitions, 4419 flow. Second operand 12 states and 193 transitions. [2024-06-28 00:26:14,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 421 transitions, 6333 flow [2024-06-28 00:26:17,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 421 transitions, 6102 flow, removed 51 selfloop flow, removed 18 redundant places. [2024-06-28 00:26:17,183 INFO L231 Difference]: Finished difference. Result has 301 places, 339 transitions, 4309 flow [2024-06-28 00:26:17,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4240, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4309, PETRI_PLACES=301, PETRI_TRANSITIONS=339} [2024-06-28 00:26:17,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-28 00:26:17,184 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 339 transitions, 4309 flow [2024-06-28 00:26:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:17,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:17,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:17,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:26:17,185 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:17,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:17,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2012460068, now seen corresponding path program 1 times [2024-06-28 00:26:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:17,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709124279] [2024-06-28 00:26:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:17,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709124279] [2024-06-28 00:26:22,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709124279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:22,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:26:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803840346] [2024-06-28 00:26:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:22,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:26:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:22,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:26:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:26:22,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:26:22,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 339 transitions, 4309 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:22,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:22,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:26:22,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:25,440 INFO L124 PetriNetUnfolderBase]: 5340/8416 cut-off events. [2024-06-28 00:26:25,440 INFO L125 PetriNetUnfolderBase]: For 916853/916858 co-relation queries the response was YES. [2024-06-28 00:26:25,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81632 conditions, 8416 events. 5340/8416 cut-off events. For 916853/916858 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 51682 event pairs, 1727 based on Foata normal form. 13/8429 useless extension candidates. Maximal degree in co-relation 81487. Up to 7797 conditions per place. [2024-06-28 00:26:25,535 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 327 selfloop transitions, 52 changer transitions 0/382 dead transitions. [2024-06-28 00:26:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 382 transitions, 5669 flow [2024-06-28 00:26:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:26:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:26:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:26:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37317073170731707 [2024-06-28 00:26:25,537 INFO L175 Difference]: Start difference. First operand has 301 places, 339 transitions, 4309 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:26:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 382 transitions, 5669 flow [2024-06-28 00:26:27,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 382 transitions, 5537 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-28 00:26:27,867 INFO L231 Difference]: Finished difference. Result has 298 places, 342 transitions, 4374 flow [2024-06-28 00:26:27,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4374, PETRI_PLACES=298, PETRI_TRANSITIONS=342} [2024-06-28 00:26:27,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 00:26:27,868 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 342 transitions, 4374 flow [2024-06-28 00:26:27,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:27,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:27,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:27,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:26:27,869 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:27,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash -102403716, now seen corresponding path program 3 times [2024-06-28 00:26:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646132198] [2024-06-28 00:26:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646132198] [2024-06-28 00:26:36,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646132198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:36,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:36,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:26:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704459078] [2024-06-28 00:26:36,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:26:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:36,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:26:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:26:36,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:26:36,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 342 transitions, 4374 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:36,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:36,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:26:36,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:39,563 INFO L124 PetriNetUnfolderBase]: 5520/8708 cut-off events. [2024-06-28 00:26:39,563 INFO L125 PetriNetUnfolderBase]: For 1038860/1038865 co-relation queries the response was YES. [2024-06-28 00:26:39,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83546 conditions, 8708 events. 5520/8708 cut-off events. For 1038860/1038865 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 53913 event pairs, 1667 based on Foata normal form. 61/8769 useless extension candidates. Maximal degree in co-relation 83401. Up to 5975 conditions per place. [2024-06-28 00:26:39,679 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 311 selfloop transitions, 54 changer transitions 30/398 dead transitions. [2024-06-28 00:26:39,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 398 transitions, 6042 flow [2024-06-28 00:26:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:26:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:26:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 00:26:39,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924611973392461 [2024-06-28 00:26:39,681 INFO L175 Difference]: Start difference. First operand has 298 places, 342 transitions, 4374 flow. Second operand 11 states and 177 transitions. [2024-06-28 00:26:39,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 398 transitions, 6042 flow [2024-06-28 00:26:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 398 transitions, 5962 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 00:26:42,029 INFO L231 Difference]: Finished difference. Result has 302 places, 327 transitions, 4196 flow [2024-06-28 00:26:42,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4196, PETRI_PLACES=302, PETRI_TRANSITIONS=327} [2024-06-28 00:26:42,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-28 00:26:42,030 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 327 transitions, 4196 flow [2024-06-28 00:26:42,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:42,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:42,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:26:42,031 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:42,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -102164706, now seen corresponding path program 4 times [2024-06-28 00:26:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974013436] [2024-06-28 00:26:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:47,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974013436] [2024-06-28 00:26:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974013436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:26:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755286667] [2024-06-28 00:26:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:47,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:26:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:26:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:26:47,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:26:47,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 327 transitions, 4196 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:47,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:47,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:26:47,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:26:51,300 INFO L124 PetriNetUnfolderBase]: 5156/8164 cut-off events. [2024-06-28 00:26:51,301 INFO L125 PetriNetUnfolderBase]: For 1070977/1070982 co-relation queries the response was YES. [2024-06-28 00:26:51,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80363 conditions, 8164 events. 5156/8164 cut-off events. For 1070977/1070982 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 50332 event pairs, 1705 based on Foata normal form. 73/8237 useless extension candidates. Maximal degree in co-relation 80217. Up to 6999 conditions per place. [2024-06-28 00:26:51,409 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 289 selfloop transitions, 46 changer transitions 34/372 dead transitions. [2024-06-28 00:26:51,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 372 transitions, 5612 flow [2024-06-28 00:26:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:26:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:26:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:26:51,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37028824833702884 [2024-06-28 00:26:51,411 INFO L175 Difference]: Start difference. First operand has 302 places, 327 transitions, 4196 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:26:51,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 372 transitions, 5612 flow [2024-06-28 00:26:53,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 372 transitions, 5492 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 00:26:53,168 INFO L231 Difference]: Finished difference. Result has 297 places, 312 transitions, 3981 flow [2024-06-28 00:26:53,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3981, PETRI_PLACES=297, PETRI_TRANSITIONS=312} [2024-06-28 00:26:53,169 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-28 00:26:53,169 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 312 transitions, 3981 flow [2024-06-28 00:26:53,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:53,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:26:53,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:26:53,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:26:53,170 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:26:53,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:26:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1894496636, now seen corresponding path program 5 times [2024-06-28 00:26:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:26:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811877613] [2024-06-28 00:26:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:26:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:26:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:26:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:26:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:26:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811877613] [2024-06-28 00:26:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811877613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:26:58,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:26:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:26:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303892408] [2024-06-28 00:26:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:26:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:26:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:26:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:26:58,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:26:58,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:26:58,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 312 transitions, 3981 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:26:58,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:26:58,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:26:58,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:01,595 INFO L124 PetriNetUnfolderBase]: 4560/7232 cut-off events. [2024-06-28 00:27:01,596 INFO L125 PetriNetUnfolderBase]: For 823486/823491 co-relation queries the response was YES. [2024-06-28 00:27:01,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66138 conditions, 7232 events. 4560/7232 cut-off events. For 823486/823491 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 44113 event pairs, 1539 based on Foata normal form. 73/7305 useless extension candidates. Maximal degree in co-relation 65995. Up to 6463 conditions per place. [2024-06-28 00:27:01,694 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 288 selfloop transitions, 41 changer transitions 23/355 dead transitions. [2024-06-28 00:27:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 355 transitions, 5405 flow [2024-06-28 00:27:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:27:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:27:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-06-28 00:27:01,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3475609756097561 [2024-06-28 00:27:01,696 INFO L175 Difference]: Start difference. First operand has 297 places, 312 transitions, 3981 flow. Second operand 12 states and 171 transitions. [2024-06-28 00:27:01,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 355 transitions, 5405 flow [2024-06-28 00:27:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 355 transitions, 5288 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 00:27:03,025 INFO L231 Difference]: Finished difference. Result has 290 places, 304 transitions, 3844 flow [2024-06-28 00:27:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3866, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3844, PETRI_PLACES=290, PETRI_TRANSITIONS=304} [2024-06-28 00:27:03,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 00:27:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 304 transitions, 3844 flow [2024-06-28 00:27:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:27:03,027 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1429365478, now seen corresponding path program 1 times [2024-06-28 00:27:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945345702] [2024-06-28 00:27:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:08,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:08,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945345702] [2024-06-28 00:27:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945345702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:08,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021995246] [2024-06-28 00:27:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:08,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:08,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:08,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:08,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 304 transitions, 3844 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:08,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:08,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:08,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:10,754 INFO L124 PetriNetUnfolderBase]: 4400/7008 cut-off events. [2024-06-28 00:27:10,754 INFO L125 PetriNetUnfolderBase]: For 713548/713553 co-relation queries the response was YES. [2024-06-28 00:27:10,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62416 conditions, 7008 events. 4400/7008 cut-off events. For 713548/713553 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 42805 event pairs, 1487 based on Foata normal form. 61/7069 useless extension candidates. Maximal degree in co-relation 62277. Up to 6253 conditions per place. [2024-06-28 00:27:10,841 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 298 selfloop transitions, 43 changer transitions 10/354 dead transitions. [2024-06-28 00:27:10,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 354 transitions, 5290 flow [2024-06-28 00:27:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:27:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:27:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 00:27:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3516260162601626 [2024-06-28 00:27:10,842 INFO L175 Difference]: Start difference. First operand has 290 places, 304 transitions, 3844 flow. Second operand 12 states and 173 transitions. [2024-06-28 00:27:10,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 354 transitions, 5290 flow [2024-06-28 00:27:12,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 354 transitions, 5196 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-28 00:27:12,043 INFO L231 Difference]: Finished difference. Result has 287 places, 304 transitions, 3880 flow [2024-06-28 00:27:12,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3750, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3880, PETRI_PLACES=287, PETRI_TRANSITIONS=304} [2024-06-28 00:27:12,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:27:12,044 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 304 transitions, 3880 flow [2024-06-28 00:27:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:12,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:12,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:27:12,045 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:12,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1894127488, now seen corresponding path program 1 times [2024-06-28 00:27:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:12,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304143412] [2024-06-28 00:27:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:12,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:17,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304143412] [2024-06-28 00:27:17,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304143412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:17,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:17,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:27:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253981175] [2024-06-28 00:27:17,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:27:17,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:27:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:27:17,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 304 transitions, 3880 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:19,515 INFO L124 PetriNetUnfolderBase]: 4126/6574 cut-off events. [2024-06-28 00:27:19,515 INFO L125 PetriNetUnfolderBase]: For 567080/567085 co-relation queries the response was YES. [2024-06-28 00:27:19,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58347 conditions, 6574 events. 4126/6574 cut-off events. For 567080/567085 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 39596 event pairs, 1367 based on Foata normal form. 13/6587 useless extension candidates. Maximal degree in co-relation 58209. Up to 6077 conditions per place. [2024-06-28 00:27:19,602 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 291 selfloop transitions, 49 changer transitions 0/343 dead transitions. [2024-06-28 00:27:19,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 343 transitions, 4954 flow [2024-06-28 00:27:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:19,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:27:19,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36829268292682926 [2024-06-28 00:27:19,604 INFO L175 Difference]: Start difference. First operand has 287 places, 304 transitions, 3880 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:27:19,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 343 transitions, 4954 flow [2024-06-28 00:27:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 343 transitions, 4841 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:27:20,801 INFO L231 Difference]: Finished difference. Result has 288 places, 304 transitions, 3873 flow [2024-06-28 00:27:20,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3873, PETRI_PLACES=288, PETRI_TRANSITIONS=304} [2024-06-28 00:27:20,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 00:27:20,801 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 304 transitions, 3873 flow [2024-06-28 00:27:20,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:20,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:20,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:20,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:27:20,802 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:20,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1157707674, now seen corresponding path program 2 times [2024-06-28 00:27:20,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:20,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019666655] [2024-06-28 00:27:20,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:25,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:25,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019666655] [2024-06-28 00:27:25,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019666655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:25,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:25,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811216842] [2024-06-28 00:27:25,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:25,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:25,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:25,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:25,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 304 transitions, 3873 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:25,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:25,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:25,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:27,918 INFO L124 PetriNetUnfolderBase]: 3994/6335 cut-off events. [2024-06-28 00:27:27,919 INFO L125 PetriNetUnfolderBase]: For 562041/562044 co-relation queries the response was YES. [2024-06-28 00:27:27,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55973 conditions, 6335 events. 3994/6335 cut-off events. For 562041/562044 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 37705 event pairs, 1317 based on Foata normal form. 34/6369 useless extension candidates. Maximal degree in co-relation 55834. Up to 5886 conditions per place. [2024-06-28 00:27:28,014 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 264 selfloop transitions, 40 changer transitions 27/334 dead transitions. [2024-06-28 00:27:28,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 334 transitions, 5009 flow [2024-06-28 00:27:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:27:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:27:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:27:28,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35033259423503327 [2024-06-28 00:27:28,016 INFO L175 Difference]: Start difference. First operand has 288 places, 304 transitions, 3873 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:27:28,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 334 transitions, 5009 flow [2024-06-28 00:27:29,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 334 transitions, 4873 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:27:29,239 INFO L231 Difference]: Finished difference. Result has 290 places, 282 transitions, 3517 flow [2024-06-28 00:27:29,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3517, PETRI_PLACES=290, PETRI_TRANSITIONS=282} [2024-06-28 00:27:29,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-28 00:27:29,240 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 282 transitions, 3517 flow [2024-06-28 00:27:29,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:29,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:29,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:29,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:27:29,241 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:29,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1153988604, now seen corresponding path program 3 times [2024-06-28 00:27:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077311876] [2024-06-28 00:27:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:34,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:34,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077311876] [2024-06-28 00:27:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077311876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:34,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:34,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:34,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105163884] [2024-06-28 00:27:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:34,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:34,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:34,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:34,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 282 transitions, 3517 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:34,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:34,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:34,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:37,087 INFO L124 PetriNetUnfolderBase]: 3639/5752 cut-off events. [2024-06-28 00:27:37,088 INFO L125 PetriNetUnfolderBase]: For 527009/527018 co-relation queries the response was YES. [2024-06-28 00:27:37,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51290 conditions, 5752 events. 3639/5752 cut-off events. For 527009/527018 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33334 event pairs, 1242 based on Foata normal form. 21/5773 useless extension candidates. Maximal degree in co-relation 51152. Up to 5476 conditions per place. [2024-06-28 00:27:37,163 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 262 selfloop transitions, 32 changer transitions 14/311 dead transitions. [2024-06-28 00:27:37,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 311 transitions, 4583 flow [2024-06-28 00:27:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 00:27:37,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33902439024390246 [2024-06-28 00:27:37,165 INFO L175 Difference]: Start difference. First operand has 290 places, 282 transitions, 3517 flow. Second operand 10 states and 139 transitions. [2024-06-28 00:27:37,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 311 transitions, 4583 flow [2024-06-28 00:27:38,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 311 transitions, 4346 flow, removed 71 selfloop flow, removed 15 redundant places. [2024-06-28 00:27:38,182 INFO L231 Difference]: Finished difference. Result has 279 places, 278 transitions, 3350 flow [2024-06-28 00:27:38,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3350, PETRI_PLACES=279, PETRI_TRANSITIONS=278} [2024-06-28 00:27:38,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-28 00:27:38,183 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 278 transitions, 3350 flow [2024-06-28 00:27:38,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:38,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:38,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:38,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:27:38,183 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:38,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:38,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1153976514, now seen corresponding path program 4 times [2024-06-28 00:27:38,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:38,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114599360] [2024-06-28 00:27:38,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114599360] [2024-06-28 00:27:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114599360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643458174] [2024-06-28 00:27:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:43,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:43,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:43,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 278 transitions, 3350 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:43,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:43,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:43,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:45,460 INFO L124 PetriNetUnfolderBase]: 3455/5456 cut-off events. [2024-06-28 00:27:45,460 INFO L125 PetriNetUnfolderBase]: For 455478/455487 co-relation queries the response was YES. [2024-06-28 00:27:45,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46706 conditions, 5456 events. 3455/5456 cut-off events. For 455478/455487 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31247 event pairs, 1148 based on Foata normal form. 17/5473 useless extension candidates. Maximal degree in co-relation 46574. Up to 5204 conditions per place. [2024-06-28 00:27:45,534 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 265 selfloop transitions, 37 changer transitions 0/305 dead transitions. [2024-06-28 00:27:45,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 305 transitions, 4246 flow [2024-06-28 00:27:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:45,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-28 00:27:45,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33170731707317075 [2024-06-28 00:27:45,536 INFO L175 Difference]: Start difference. First operand has 279 places, 278 transitions, 3350 flow. Second operand 10 states and 136 transitions. [2024-06-28 00:27:45,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 305 transitions, 4246 flow [2024-06-28 00:27:46,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 305 transitions, 4172 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 00:27:46,294 INFO L231 Difference]: Finished difference. Result has 272 places, 279 transitions, 3392 flow [2024-06-28 00:27:46,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3392, PETRI_PLACES=272, PETRI_TRANSITIONS=279} [2024-06-28 00:27:46,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 00:27:46,295 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 279 transitions, 3392 flow [2024-06-28 00:27:46,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:46,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:46,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:27:46,295 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:46,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 678459616, now seen corresponding path program 5 times [2024-06-28 00:27:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035543978] [2024-06-28 00:27:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:50,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035543978] [2024-06-28 00:27:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035543978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:50,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:50,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:27:50,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981768364] [2024-06-28 00:27:50,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:50,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:27:50,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:50,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:27:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:27:50,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:50,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 279 transitions, 3392 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:50,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:50,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:50,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:27:52,892 INFO L124 PetriNetUnfolderBase]: 3265/5112 cut-off events. [2024-06-28 00:27:52,892 INFO L125 PetriNetUnfolderBase]: For 413628/413631 co-relation queries the response was YES. [2024-06-28 00:27:52,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43195 conditions, 5112 events. 3265/5112 cut-off events. For 413628/413631 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 28714 event pairs, 893 based on Foata normal form. 30/5142 useless extension candidates. Maximal degree in co-relation 43066. Up to 4618 conditions per place. [2024-06-28 00:27:52,958 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 258 selfloop transitions, 39 changer transitions 13/313 dead transitions. [2024-06-28 00:27:52,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 313 transitions, 4372 flow [2024-06-28 00:27:52,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:27:52,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:27:52,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:27:52,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36097560975609755 [2024-06-28 00:27:52,960 INFO L175 Difference]: Start difference. First operand has 272 places, 279 transitions, 3392 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:27:52,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 313 transitions, 4372 flow [2024-06-28 00:27:53,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 313 transitions, 4150 flow, removed 43 selfloop flow, removed 13 redundant places. [2024-06-28 00:27:53,746 INFO L231 Difference]: Finished difference. Result has 269 places, 267 transitions, 3157 flow [2024-06-28 00:27:53,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3156, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3157, PETRI_PLACES=269, PETRI_TRANSITIONS=267} [2024-06-28 00:27:53,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 00:27:53,747 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 267 transitions, 3157 flow [2024-06-28 00:27:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:53,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:27:53,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:27:53,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:27:53,748 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:27:53,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:27:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 690198076, now seen corresponding path program 6 times [2024-06-28 00:27:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:27:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306305518] [2024-06-28 00:27:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:27:53,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:27:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:27:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:27:58,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:27:58,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306305518] [2024-06-28 00:27:58,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306305518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:27:58,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:27:58,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:27:58,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293603857] [2024-06-28 00:27:58,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:27:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:27:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:27:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:27:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:27:58,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:27:58,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 267 transitions, 3157 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:27:58,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:27:58,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:27:58,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:00,319 INFO L124 PetriNetUnfolderBase]: 2945/4614 cut-off events. [2024-06-28 00:28:00,319 INFO L125 PetriNetUnfolderBase]: For 381970/381979 co-relation queries the response was YES. [2024-06-28 00:28:00,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40170 conditions, 4614 events. 2945/4614 cut-off events. For 381970/381979 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 25441 event pairs, 736 based on Foata normal form. 17/4631 useless extension candidates. Maximal degree in co-relation 40042. Up to 4276 conditions per place. [2024-06-28 00:28:00,368 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 247 selfloop transitions, 49 changer transitions 0/299 dead transitions. [2024-06-28 00:28:00,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 299 transitions, 4069 flow [2024-06-28 00:28:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:28:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:28:00,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 00:28:00,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.348780487804878 [2024-06-28 00:28:00,369 INFO L175 Difference]: Start difference. First operand has 269 places, 267 transitions, 3157 flow. Second operand 10 states and 143 transitions. [2024-06-28 00:28:00,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 299 transitions, 4069 flow [2024-06-28 00:28:01,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 299 transitions, 3890 flow, removed 40 selfloop flow, removed 14 redundant places. [2024-06-28 00:28:01,137 INFO L231 Difference]: Finished difference. Result has 260 places, 270 transitions, 3208 flow [2024-06-28 00:28:01,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3208, PETRI_PLACES=260, PETRI_TRANSITIONS=270} [2024-06-28 00:28:01,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-28 00:28:01,138 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 270 transitions, 3208 flow [2024-06-28 00:28:01,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:01,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:01,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:01,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:28:01,139 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:01,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash 690198262, now seen corresponding path program 2 times [2024-06-28 00:28:01,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:01,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495294458] [2024-06-28 00:28:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495294458] [2024-06-28 00:28:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495294458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:06,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:06,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680147394] [2024-06-28 00:28:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:06,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:06,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:06,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:06,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 270 transitions, 3208 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:06,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:06,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:06,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:08,075 INFO L124 PetriNetUnfolderBase]: 2973/4658 cut-off events. [2024-06-28 00:28:08,076 INFO L125 PetriNetUnfolderBase]: For 343315/343324 co-relation queries the response was YES. [2024-06-28 00:28:08,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38898 conditions, 4658 events. 2973/4658 cut-off events. For 343315/343324 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25682 event pairs, 664 based on Foata normal form. 17/4675 useless extension candidates. Maximal degree in co-relation 38774. Up to 4066 conditions per place. [2024-06-28 00:28:08,130 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 251 selfloop transitions, 50 changer transitions 0/304 dead transitions. [2024-06-28 00:28:08,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 304 transitions, 4102 flow [2024-06-28 00:28:08,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:28:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:28:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:28:08,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:28:08,132 INFO L175 Difference]: Start difference. First operand has 260 places, 270 transitions, 3208 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:28:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 304 transitions, 4102 flow [2024-06-28 00:28:08,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 304 transitions, 3947 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 00:28:08,698 INFO L231 Difference]: Finished difference. Result has 261 places, 271 transitions, 3187 flow [2024-06-28 00:28:08,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3187, PETRI_PLACES=261, PETRI_TRANSITIONS=271} [2024-06-28 00:28:08,698 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 00:28:08,698 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 271 transitions, 3187 flow [2024-06-28 00:28:08,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:08,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:08,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:08,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:28:08,699 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:08,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 690078106, now seen corresponding path program 7 times [2024-06-28 00:28:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:08,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555784435] [2024-06-28 00:28:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:13,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:13,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555784435] [2024-06-28 00:28:13,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555784435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:13,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:13,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:28:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969293360] [2024-06-28 00:28:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:13,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:28:13,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:28:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:28:13,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:13,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 271 transitions, 3187 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:13,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:13,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:13,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:14,778 INFO L124 PetriNetUnfolderBase]: 3090/4835 cut-off events. [2024-06-28 00:28:14,778 INFO L125 PetriNetUnfolderBase]: For 367247/367250 co-relation queries the response was YES. [2024-06-28 00:28:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40621 conditions, 4835 events. 3090/4835 cut-off events. For 367247/367250 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 26951 event pairs, 724 based on Foata normal form. 10/4845 useless extension candidates. Maximal degree in co-relation 40496. Up to 3980 conditions per place. [2024-06-28 00:28:14,836 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 252 selfloop transitions, 63 changer transitions 0/318 dead transitions. [2024-06-28 00:28:14,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 318 transitions, 4431 flow [2024-06-28 00:28:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:28:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:28:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:28:14,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37317073170731707 [2024-06-28 00:28:14,837 INFO L175 Difference]: Start difference. First operand has 261 places, 271 transitions, 3187 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:28:14,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 318 transitions, 4431 flow [2024-06-28 00:28:15,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 318 transitions, 4303 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:28:15,505 INFO L231 Difference]: Finished difference. Result has 265 places, 282 transitions, 3452 flow [2024-06-28 00:28:15,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3452, PETRI_PLACES=265, PETRI_TRANSITIONS=282} [2024-06-28 00:28:15,505 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 00:28:15,505 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 282 transitions, 3452 flow [2024-06-28 00:28:15,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:15,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:15,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:15,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:28:15,506 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:15,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:15,506 INFO L85 PathProgramCache]: Analyzing trace with hash -854705282, now seen corresponding path program 2 times [2024-06-28 00:28:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938300917] [2024-06-28 00:28:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:15,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:21,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:21,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938300917] [2024-06-28 00:28:21,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938300917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:21,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:21,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:28:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092505992] [2024-06-28 00:28:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:28:21,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:28:21,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:28:21,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:21,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 282 transitions, 3452 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:21,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:21,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:21,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:24,138 INFO L124 PetriNetUnfolderBase]: 3118/4882 cut-off events. [2024-06-28 00:28:24,138 INFO L125 PetriNetUnfolderBase]: For 371307/371312 co-relation queries the response was YES. [2024-06-28 00:28:24,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41324 conditions, 4882 events. 3118/4882 cut-off events. For 371307/371312 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 27378 event pairs, 901 based on Foata normal form. 13/4895 useless extension candidates. Maximal degree in co-relation 41197. Up to 4353 conditions per place. [2024-06-28 00:28:24,205 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 268 selfloop transitions, 59 changer transitions 0/330 dead transitions. [2024-06-28 00:28:24,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 330 transitions, 4698 flow [2024-06-28 00:28:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:28:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:28:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:28:24,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-28 00:28:24,207 INFO L175 Difference]: Start difference. First operand has 265 places, 282 transitions, 3452 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:28:24,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 330 transitions, 4698 flow [2024-06-28 00:28:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 330 transitions, 4550 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 00:28:25,048 INFO L231 Difference]: Finished difference. Result has 270 places, 283 transitions, 3456 flow [2024-06-28 00:28:25,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3456, PETRI_PLACES=270, PETRI_TRANSITIONS=283} [2024-06-28 00:28:25,049 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 00:28:25,049 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 283 transitions, 3456 flow [2024-06-28 00:28:25,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:25,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:25,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:28:25,052 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:25,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1843781250, now seen corresponding path program 3 times [2024-06-28 00:28:25,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:25,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767790512] [2024-06-28 00:28:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767790512] [2024-06-28 00:28:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767790512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:32,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:28:32,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733788753] [2024-06-28 00:28:32,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:32,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:28:32,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:28:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:28:32,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:32,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 283 transitions, 3456 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:32,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:32,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:32,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:35,585 INFO L124 PetriNetUnfolderBase]: 3072/4816 cut-off events. [2024-06-28 00:28:35,585 INFO L125 PetriNetUnfolderBase]: For 363955/363960 co-relation queries the response was YES. [2024-06-28 00:28:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39612 conditions, 4816 events. 3072/4816 cut-off events. For 363955/363960 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 26979 event pairs, 895 based on Foata normal form. 25/4841 useless extension candidates. Maximal degree in co-relation 39483. Up to 4387 conditions per place. [2024-06-28 00:28:35,656 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 261 selfloop transitions, 56 changer transitions 0/320 dead transitions. [2024-06-28 00:28:35,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 320 transitions, 4460 flow [2024-06-28 00:28:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:28:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:28:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:28:35,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37317073170731707 [2024-06-28 00:28:35,658 INFO L175 Difference]: Start difference. First operand has 270 places, 283 transitions, 3456 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:28:35,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 320 transitions, 4460 flow [2024-06-28 00:28:36,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 320 transitions, 4273 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 00:28:36,747 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 3387 flow [2024-06-28 00:28:36,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3387, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2024-06-28 00:28:36,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-28 00:28:36,748 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 3387 flow [2024-06-28 00:28:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:36,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:36,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:36,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:28:36,749 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:36,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:36,749 INFO L85 PathProgramCache]: Analyzing trace with hash 173151550, now seen corresponding path program 1 times [2024-06-28 00:28:36,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:36,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053001875] [2024-06-28 00:28:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:36,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:42,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:42,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053001875] [2024-06-28 00:28:42,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053001875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:42,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:42,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:28:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639585468] [2024-06-28 00:28:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:42,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:28:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:28:42,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:28:42,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:42,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 3387 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:42,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:42,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:42,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:45,763 INFO L124 PetriNetUnfolderBase]: 3107/4865 cut-off events. [2024-06-28 00:28:45,763 INFO L125 PetriNetUnfolderBase]: For 348927/348932 co-relation queries the response was YES. [2024-06-28 00:28:45,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39765 conditions, 4865 events. 3107/4865 cut-off events. For 348927/348932 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27233 event pairs, 889 based on Foata normal form. 12/4877 useless extension candidates. Maximal degree in co-relation 39635. Up to 4096 conditions per place. [2024-06-28 00:28:45,811 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 249 selfloop transitions, 91 changer transitions 0/343 dead transitions. [2024-06-28 00:28:45,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 343 transitions, 5171 flow [2024-06-28 00:28:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:28:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:28:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-06-28 00:28:45,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827392120075047 [2024-06-28 00:28:45,813 INFO L175 Difference]: Start difference. First operand has 273 places, 283 transitions, 3387 flow. Second operand 13 states and 204 transitions. [2024-06-28 00:28:45,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 343 transitions, 5171 flow [2024-06-28 00:28:46,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 343 transitions, 5019 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:28:46,457 INFO L231 Difference]: Finished difference. Result has 276 places, 286 transitions, 3447 flow [2024-06-28 00:28:46,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3447, PETRI_PLACES=276, PETRI_TRANSITIONS=286} [2024-06-28 00:28:46,457 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 00:28:46,458 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 286 transitions, 3447 flow [2024-06-28 00:28:46,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:46,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:46,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:46,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:28:46,458 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:46,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash 173472214, now seen corresponding path program 1 times [2024-06-28 00:28:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:46,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797633399] [2024-06-28 00:28:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:46,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797633399] [2024-06-28 00:28:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797633399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:51,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:51,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:28:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195449355] [2024-06-28 00:28:51,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:51,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:28:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:28:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:28:51,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:28:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 286 transitions, 3447 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:28:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:54,039 INFO L124 PetriNetUnfolderBase]: 3086/4837 cut-off events. [2024-06-28 00:28:54,040 INFO L125 PetriNetUnfolderBase]: For 344395/344400 co-relation queries the response was YES. [2024-06-28 00:28:54,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39395 conditions, 4837 events. 3086/4837 cut-off events. For 344395/344400 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27107 event pairs, 889 based on Foata normal form. 12/4849 useless extension candidates. Maximal degree in co-relation 39264. Up to 4084 conditions per place. [2024-06-28 00:28:54,100 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 248 selfloop transitions, 91 changer transitions 0/342 dead transitions. [2024-06-28 00:28:54,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 342 transitions, 5083 flow [2024-06-28 00:28:54,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:28:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:28:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-06-28 00:28:54,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641114982578397 [2024-06-28 00:28:54,102 INFO L175 Difference]: Start difference. First operand has 276 places, 286 transitions, 3447 flow. Second operand 14 states and 209 transitions. [2024-06-28 00:28:54,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 342 transitions, 5083 flow [2024-06-28 00:28:54,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 342 transitions, 4905 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 00:28:54,849 INFO L231 Difference]: Finished difference. Result has 280 places, 286 transitions, 3459 flow [2024-06-28 00:28:54,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3459, PETRI_PLACES=280, PETRI_TRANSITIONS=286} [2024-06-28 00:28:54,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 00:28:54,849 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 286 transitions, 3459 flow [2024-06-28 00:28:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:54,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:54,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:54,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:28:54,850 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:28:54,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash -171654824, now seen corresponding path program 4 times [2024-06-28 00:28:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883749266] [2024-06-28 00:28:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:54,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:01,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883749266] [2024-06-28 00:29:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883749266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:29:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953966409] [2024-06-28 00:29:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:01,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:29:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:29:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:29:01,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:01,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 286 transitions, 3459 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:01,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:01,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:01,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:03,939 INFO L124 PetriNetUnfolderBase]: 3114/4881 cut-off events. [2024-06-28 00:29:03,940 INFO L125 PetriNetUnfolderBase]: For 357278/357283 co-relation queries the response was YES. [2024-06-28 00:29:03,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39963 conditions, 4881 events. 3114/4881 cut-off events. For 357278/357283 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 27425 event pairs, 749 based on Foata normal form. 13/4894 useless extension candidates. Maximal degree in co-relation 39831. Up to 4304 conditions per place. [2024-06-28 00:29:03,995 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 267 selfloop transitions, 63 changer transitions 0/333 dead transitions. [2024-06-28 00:29:03,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 333 transitions, 4693 flow [2024-06-28 00:29:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:29:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:29:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:29:03,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878048780487805 [2024-06-28 00:29:03,997 INFO L175 Difference]: Start difference. First operand has 280 places, 286 transitions, 3459 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:29:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 333 transitions, 4693 flow [2024-06-28 00:29:04,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 333 transitions, 4501 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 00:29:04,739 INFO L231 Difference]: Finished difference. Result has 276 places, 287 transitions, 3431 flow [2024-06-28 00:29:04,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3431, PETRI_PLACES=276, PETRI_TRANSITIONS=287} [2024-06-28 00:29:04,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 00:29:04,739 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 287 transitions, 3431 flow [2024-06-28 00:29:04,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:04,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:04,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:04,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:29:04,740 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:04,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash -171268874, now seen corresponding path program 5 times [2024-06-28 00:29:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137651689] [2024-06-28 00:29:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:10,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:10,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137651689] [2024-06-28 00:29:10,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137651689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:10,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:10,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:29:10,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989676136] [2024-06-28 00:29:10,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:10,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:29:10,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:29:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:29:11,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:11,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 287 transitions, 3431 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:11,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:11,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:12,631 INFO L124 PetriNetUnfolderBase]: 3162/4957 cut-off events. [2024-06-28 00:29:12,631 INFO L125 PetriNetUnfolderBase]: For 368484/368489 co-relation queries the response was YES. [2024-06-28 00:29:12,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40745 conditions, 4957 events. 3162/4957 cut-off events. For 368484/368489 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 28056 event pairs, 773 based on Foata normal form. 13/4970 useless extension candidates. Maximal degree in co-relation 40613. Up to 3690 conditions per place. [2024-06-28 00:29:12,694 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 254 selfloop transitions, 70 changer transitions 0/327 dead transitions. [2024-06-28 00:29:12,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 327 transitions, 4649 flow [2024-06-28 00:29:12,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:29:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:29:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:29:12,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2024-06-28 00:29:12,695 INFO L175 Difference]: Start difference. First operand has 276 places, 287 transitions, 3431 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:29:12,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 327 transitions, 4649 flow [2024-06-28 00:29:13,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 327 transitions, 4499 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 00:29:13,420 INFO L231 Difference]: Finished difference. Result has 277 places, 289 transitions, 3491 flow [2024-06-28 00:29:13,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3491, PETRI_PLACES=277, PETRI_TRANSITIONS=289} [2024-06-28 00:29:13,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 00:29:13,420 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 289 transitions, 3491 flow [2024-06-28 00:29:13,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:13,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:13,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:13,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:29:13,421 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:13,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:13,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1463462330, now seen corresponding path program 6 times [2024-06-28 00:29:13,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:13,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082708028] [2024-06-28 00:29:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082708028] [2024-06-28 00:29:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082708028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394242365] [2024-06-28 00:29:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:20,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:20,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 289 transitions, 3491 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:20,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:20,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:20,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:22,286 INFO L124 PetriNetUnfolderBase]: 3206/5025 cut-off events. [2024-06-28 00:29:22,287 INFO L125 PetriNetUnfolderBase]: For 387785/387790 co-relation queries the response was YES. [2024-06-28 00:29:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41393 conditions, 5025 events. 3206/5025 cut-off events. For 387785/387790 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 28557 event pairs, 942 based on Foata normal form. 17/5042 useless extension candidates. Maximal degree in co-relation 41260. Up to 4624 conditions per place. [2024-06-28 00:29:22,352 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 265 selfloop transitions, 54 changer transitions 0/322 dead transitions. [2024-06-28 00:29:22,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 322 transitions, 4599 flow [2024-06-28 00:29:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:29:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:29:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-28 00:29:22,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35609756097560974 [2024-06-28 00:29:22,354 INFO L175 Difference]: Start difference. First operand has 277 places, 289 transitions, 3491 flow. Second operand 10 states and 146 transitions. [2024-06-28 00:29:22,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 322 transitions, 4599 flow [2024-06-28 00:29:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 322 transitions, 4489 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:29:23,132 INFO L231 Difference]: Finished difference. Result has 280 places, 290 transitions, 3512 flow [2024-06-28 00:29:23,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3381, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3512, PETRI_PLACES=280, PETRI_TRANSITIONS=290} [2024-06-28 00:29:23,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 00:29:23,133 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 290 transitions, 3512 flow [2024-06-28 00:29:23,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:23,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:23,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:23,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:29:23,134 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:23,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1476223116, now seen corresponding path program 8 times [2024-06-28 00:29:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:23,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816143670] [2024-06-28 00:29:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816143670] [2024-06-28 00:29:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816143670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:28,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:29:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806379701] [2024-06-28 00:29:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:29:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:29:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:29:28,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:28,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 290 transitions, 3512 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:28,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:28,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:28,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:30,820 INFO L124 PetriNetUnfolderBase]: 3434/5389 cut-off events. [2024-06-28 00:29:30,821 INFO L125 PetriNetUnfolderBase]: For 533779/533784 co-relation queries the response was YES. [2024-06-28 00:29:30,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44304 conditions, 5389 events. 3434/5389 cut-off events. For 533779/533784 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 30879 event pairs, 991 based on Foata normal form. 73/5462 useless extension candidates. Maximal degree in co-relation 44171. Up to 4254 conditions per place. [2024-06-28 00:29:30,880 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 247 selfloop transitions, 85 changer transitions 7/342 dead transitions. [2024-06-28 00:29:30,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 342 transitions, 5130 flow [2024-06-28 00:29:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:29:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:29:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 00:29:30,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37398373983739835 [2024-06-28 00:29:30,882 INFO L175 Difference]: Start difference. First operand has 280 places, 290 transitions, 3512 flow. Second operand 12 states and 184 transitions. [2024-06-28 00:29:30,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 342 transitions, 5130 flow [2024-06-28 00:29:31,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 342 transitions, 5017 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:29:31,719 INFO L231 Difference]: Finished difference. Result has 284 places, 288 transitions, 3589 flow [2024-06-28 00:29:31,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3589, PETRI_PLACES=284, PETRI_TRANSITIONS=288} [2024-06-28 00:29:31,720 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-28 00:29:31,720 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 288 transitions, 3589 flow [2024-06-28 00:29:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:31,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:31,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:29:31,721 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:31,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1476235206, now seen corresponding path program 9 times [2024-06-28 00:29:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:31,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503868472] [2024-06-28 00:29:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:37,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:37,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503868472] [2024-06-28 00:29:37,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503868472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:37,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:37,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:29:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591093851] [2024-06-28 00:29:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:29:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:29:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:29:37,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:37,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 288 transitions, 3589 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:37,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:37,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:37,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:40,624 INFO L124 PetriNetUnfolderBase]: 3571/5624 cut-off events. [2024-06-28 00:29:40,624 INFO L125 PetriNetUnfolderBase]: For 520006/520011 co-relation queries the response was YES. [2024-06-28 00:29:40,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46214 conditions, 5624 events. 3571/5624 cut-off events. For 520006/520011 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32590 event pairs, 989 based on Foata normal form. 61/5685 useless extension candidates. Maximal degree in co-relation 46080. Up to 4152 conditions per place. [2024-06-28 00:29:40,693 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 248 selfloop transitions, 87 changer transitions 14/352 dead transitions. [2024-06-28 00:29:40,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 352 transitions, 5403 flow [2024-06-28 00:29:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:29:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:29:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 00:29:40,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-28 00:29:40,695 INFO L175 Difference]: Start difference. First operand has 284 places, 288 transitions, 3589 flow. Second operand 12 states and 195 transitions. [2024-06-28 00:29:40,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 352 transitions, 5403 flow [2024-06-28 00:29:41,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 352 transitions, 5207 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 00:29:41,535 INFO L231 Difference]: Finished difference. Result has 287 places, 287 transitions, 3609 flow [2024-06-28 00:29:41,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3609, PETRI_PLACES=287, PETRI_TRANSITIONS=287} [2024-06-28 00:29:41,536 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:29:41,536 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 287 transitions, 3609 flow [2024-06-28 00:29:41,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:41,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:41,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:29:41,537 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:41,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1134144314, now seen corresponding path program 3 times [2024-06-28 00:29:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070222123] [2024-06-28 00:29:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070222123] [2024-06-28 00:29:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070222123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:29:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122920185] [2024-06-28 00:29:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:29:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:48,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:29:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:29:48,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:48,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 287 transitions, 3609 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:48,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:48,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:48,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:29:51,509 INFO L124 PetriNetUnfolderBase]: 3491/5504 cut-off events. [2024-06-28 00:29:51,509 INFO L125 PetriNetUnfolderBase]: For 423702/423707 co-relation queries the response was YES. [2024-06-28 00:29:51,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45443 conditions, 5504 events. 3491/5504 cut-off events. For 423702/423707 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31957 event pairs, 1072 based on Foata normal form. 13/5517 useless extension candidates. Maximal degree in co-relation 45307. Up to 5037 conditions per place. [2024-06-28 00:29:51,576 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 265 selfloop transitions, 56 changer transitions 1/325 dead transitions. [2024-06-28 00:29:51,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 325 transitions, 4787 flow [2024-06-28 00:29:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:29:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:29:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:29:51,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37073170731707317 [2024-06-28 00:29:51,578 INFO L175 Difference]: Start difference. First operand has 287 places, 287 transitions, 3609 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:29:51,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 325 transitions, 4787 flow [2024-06-28 00:29:52,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 325 transitions, 4550 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 00:29:52,503 INFO L231 Difference]: Finished difference. Result has 287 places, 288 transitions, 3548 flow [2024-06-28 00:29:52,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=287, PETRI_TRANSITIONS=288} [2024-06-28 00:29:52,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 00:29:52,504 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 288 transitions, 3548 flow [2024-06-28 00:29:52,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:52,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:29:52,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:29:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:29:52,504 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:29:52,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:29:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1490282112, now seen corresponding path program 4 times [2024-06-28 00:29:52,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:29:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272595412] [2024-06-28 00:29:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:29:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:29:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:29:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:29:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:29:58,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272595412] [2024-06-28 00:29:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272595412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:29:58,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:29:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:29:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297720823] [2024-06-28 00:29:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:29:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:29:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:29:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:29:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:29:58,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:29:58,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 288 transitions, 3548 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:29:58,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:29:58,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:29:58,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:00,211 INFO L124 PetriNetUnfolderBase]: 3519/5548 cut-off events. [2024-06-28 00:30:00,211 INFO L125 PetriNetUnfolderBase]: For 431359/431364 co-relation queries the response was YES. [2024-06-28 00:30:00,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45205 conditions, 5548 events. 3519/5548 cut-off events. For 431359/431364 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32192 event pairs, 903 based on Foata normal form. 13/5561 useless extension candidates. Maximal degree in co-relation 45068. Up to 4225 conditions per place. [2024-06-28 00:30:00,283 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 249 selfloop transitions, 76 changer transitions 0/328 dead transitions. [2024-06-28 00:30:00,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 328 transitions, 4848 flow [2024-06-28 00:30:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:30:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:30:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 00:30:00,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 00:30:00,284 INFO L175 Difference]: Start difference. First operand has 287 places, 288 transitions, 3548 flow. Second operand 8 states and 136 transitions. [2024-06-28 00:30:00,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 328 transitions, 4848 flow [2024-06-28 00:30:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 328 transitions, 4714 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:30:01,192 INFO L231 Difference]: Finished difference. Result has 288 places, 289 transitions, 3606 flow [2024-06-28 00:30:01,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3606, PETRI_PLACES=288, PETRI_TRANSITIONS=289} [2024-06-28 00:30:01,192 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 00:30:01,193 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 289 transitions, 3606 flow [2024-06-28 00:30:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:01,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:01,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:01,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:30:01,193 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:01,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:01,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1490044776, now seen corresponding path program 10 times [2024-06-28 00:30:01,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:01,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177925642] [2024-06-28 00:30:01,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:01,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177925642] [2024-06-28 00:30:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177925642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:30:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847662889] [2024-06-28 00:30:07,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:30:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:30:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:30:07,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:30:07,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 289 transitions, 3606 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:07,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:07,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:30:07,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:30:09,551 INFO L124 PetriNetUnfolderBase]: 4011/6324 cut-off events. [2024-06-28 00:30:09,552 INFO L125 PetriNetUnfolderBase]: For 710323/710328 co-relation queries the response was YES. [2024-06-28 00:30:09,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54771 conditions, 6324 events. 4011/6324 cut-off events. For 710323/710328 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 37278 event pairs, 1161 based on Foata normal form. 61/6385 useless extension candidates. Maximal degree in co-relation 54633. Up to 3764 conditions per place. [2024-06-28 00:30:09,634 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 241 selfloop transitions, 93 changer transitions 16/353 dead transitions. [2024-06-28 00:30:09,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 353 transitions, 5410 flow [2024-06-28 00:30:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:30:09,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:30:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 00:30:09,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41685144124168516 [2024-06-28 00:30:09,635 INFO L175 Difference]: Start difference. First operand has 288 places, 289 transitions, 3606 flow. Second operand 11 states and 188 transitions. [2024-06-28 00:30:09,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 353 transitions, 5410 flow [2024-06-28 00:30:10,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 353 transitions, 5248 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:30:10,797 INFO L231 Difference]: Finished difference. Result has 295 places, 284 transitions, 3610 flow [2024-06-28 00:30:10,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3610, PETRI_PLACES=295, PETRI_TRANSITIONS=284} [2024-06-28 00:30:10,798 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-28 00:30:10,798 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 284 transitions, 3610 flow [2024-06-28 00:30:10,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:10,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:30:10,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:30:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:30:10,799 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:30:10,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:30:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1452542310, now seen corresponding path program 5 times [2024-06-28 00:30:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:30:10,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034716200] [2024-06-28 00:30:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:30:10,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:30:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:30:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:30:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:30:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034716200] [2024-06-28 00:30:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034716200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:30:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:30:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:30:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194895332] [2024-06-28 00:30:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:30:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:30:17,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:30:17,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:30:17,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:30:17,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 41 [2024-06-28 00:30:17,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 284 transitions, 3610 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:30:17,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:30:17,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 41 [2024-06-28 00:30:17,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15