./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 --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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:44:22,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:44:22,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:44:22,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:44:22,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:44:22,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:44:22,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:44:22,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:44:22,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:44:22,662 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:44:22,662 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:44:22,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:44:22,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:44:22,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:44:22,664 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:44:22,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:44:22,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:44:22,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:44:22,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:44:22,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:44:22,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:44:22,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:44:22,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:44:22,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:44:22,666 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:44:22,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:44:22,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:44:22,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:44:22,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:44:22,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:44:22,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:44:22,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:44:22,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:44:22,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:44:22,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:44:22,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:44:22,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:44:22,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:44:22,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:44:22,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:44:22,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:44:22,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:44:22,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:44:22,923 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:44:22,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-27 22:44:23,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:44:24,114 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:44:24,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i [2024-06-27 22:44:24,132 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3444f3e/1c1e1e0256844ae2b760c481a9a2f016/FLAG7c10beaa4 [2024-06-27 22:44:24,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c3444f3e/1c1e1e0256844ae2b760c481a9a2f016 [2024-06-27 22:44:24,147 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:44:24,148 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:44:24,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe009_rmo.opt.yml/witness.yml [2024-06-27 22:44:24,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:44:24,258 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:44:24,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:44:24,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:44:24,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:44:24,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:44:24" (1/2) ... [2024-06-27 22:44:24,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4311a9ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:44:24, skipping insertion in model container [2024-06-27 22:44:24,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:44:24" (1/2) ... [2024-06-27 22:44:24,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e8db760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:44:24, skipping insertion in model container [2024-06-27 22:44:24,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:44:24" (2/2) ... [2024-06-27 22:44:24,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4311a9ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24, skipping insertion in model container [2024-06-27 22:44:24,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:44:24" (2/2) ... [2024-06-27 22:44:24,270 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:44:24,291 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:44:24,293 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) [2024-06-27 22:44:24,293 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$mem_tmp >= 0LL) [2024-06-27 22:44:24,293 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )x$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) [2024-06-27 22:44:24,293 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:44:24,294 INFO L106 edCorrectnessWitness]: ghost_update [L839-L839] multithreaded = 1; [2024-06-27 22:44:24,329 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:44:24,455 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i[949,962] [2024-06-27 22:44:24,582 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:44:24,597 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:44:24,638 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_rmo.opt.i[949,962] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:44:24,777 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:44:24,819 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:44:24,819 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24 WrapperNode [2024-06-27 22:44:24,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:44:24,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:44:24,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:44:24,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:44:24,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,914 INFO L138 Inliner]: procedures = 175, calls = 63, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2024-06-27 22:44:24,915 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:44:24,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:44:24,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:44:24,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:44:24,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,959 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]. [2024-06-27 22:44:24,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:24,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:25,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:44:25,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:44:25,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:44:25,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:44:25,009 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (1/1) ... [2024-06-27 22:44:25,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:44:25,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:44:25,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:44:25,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:44:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:44:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:44:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:44:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:44:25,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:44:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:44:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:44:25,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:44:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:44:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:44:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:44:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:44:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:44:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:44:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:44:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:44:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:44:25,102 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:44:25,270 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:44:25,272 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:44:25,697 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:44:25,698 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:44:25,923 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:44:25,924 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:44:25,924 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:44:25 BoogieIcfgContainer [2024-06-27 22:44:25,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:44:25,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:44:25,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:44:25,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:44:25,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:44:24" (1/4) ... [2024-06-27 22:44:25,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcf22fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:44:25, skipping insertion in model container [2024-06-27 22:44:25,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:44:24" (2/4) ... [2024-06-27 22:44:25,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcf22fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:44:25, skipping insertion in model container [2024-06-27 22:44:25,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:44:24" (3/4) ... [2024-06-27 22:44:25,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcf22fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:44:25, skipping insertion in model container [2024-06-27 22:44:25,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:44:25" (4/4) ... [2024-06-27 22:44:25,934 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.opt.i [2024-06-27 22:44:25,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:44:25,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:44:25,950 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:44:26,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:44:26,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:44:26,078 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:44:26,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:44:26,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:44:26,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:44:26,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-27 22:44:26,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:44:26,106 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;@2dda0113, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:44:26,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:44:26,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:44:26,111 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:44:26,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:44:26,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:26,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:44:26,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:26,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:26,117 INFO L85 PathProgramCache]: Analyzing trace with hash 605591595, now seen corresponding path program 1 times [2024-06-27 22:44:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:26,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529989867] [2024-06-27 22:44:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:27,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:27,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529989867] [2024-06-27 22:44:27,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529989867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:27,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:27,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:44:27,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856856211] [2024-06-27 22:44:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:27,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:44:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:44:27,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:44:27,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:44:27,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:27,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:27,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:44:27,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:28,797 INFO L124 PetriNetUnfolderBase]: 3395/4925 cut-off events. [2024-06-27 22:44:28,798 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 22:44:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9920 conditions, 4925 events. 3395/4925 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 25411 event pairs, 1898 based on Foata normal form. 0/4741 useless extension candidates. Maximal degree in co-relation 9908. Up to 4902 conditions per place. [2024-06-27 22:44:28,822 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 47 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:44:28,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 233 flow [2024-06-27 22:44:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:44:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:44:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-27 22:44:28,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 22:44:28,834 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 87 transitions. [2024-06-27 22:44:28,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 233 flow [2024-06-27 22:44:28,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:44:28,839 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 116 flow [2024-06-27 22:44:28,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 22:44:28,843 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-27 22:44:28,843 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 116 flow [2024-06-27 22:44:28,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:28,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:28,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:28,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:44:28,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:28,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1974167461, now seen corresponding path program 1 times [2024-06-27 22:44:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663791228] [2024-06-27 22:44:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:30,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:30,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663791228] [2024-06-27 22:44:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663791228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:30,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:30,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:44:30,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352855631] [2024-06-27 22:44:30,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:30,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:44:30,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:30,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:44:30,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:44:30,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:30,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:30,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:31,581 INFO L124 PetriNetUnfolderBase]: 4118/5947 cut-off events. [2024-06-27 22:44:31,581 INFO L125 PetriNetUnfolderBase]: For 837/841 co-relation queries the response was YES. [2024-06-27 22:44:31,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13155 conditions, 5947 events. 4118/5947 cut-off events. For 837/841 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30525 event pairs, 1432 based on Foata normal form. 10/5956 useless extension candidates. Maximal degree in co-relation 13143. Up to 5828 conditions per place. [2024-06-27 22:44:31,642 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 65 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2024-06-27 22:44:31,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 342 flow [2024-06-27 22:44:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:44:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:44:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-27 22:44:31,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 22:44:31,644 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 116 flow. Second operand 4 states and 115 transitions. [2024-06-27 22:44:31,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 342 flow [2024-06-27 22:44:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 338 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:44:31,646 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 152 flow [2024-06-27 22:44:31,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 22:44:31,647 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2024-06-27 22:44:31,647 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 152 flow [2024-06-27 22:44:31,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:31,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:31,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:31,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:44:31,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:31,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1200664186, now seen corresponding path program 1 times [2024-06-27 22:44:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:31,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228070811] [2024-06-27 22:44:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228070811] [2024-06-27 22:44:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228070811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:34,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:44:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291815193] [2024-06-27 22:44:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:44:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:44:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:44:34,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:34,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:34,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:34,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:34,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:35,775 INFO L124 PetriNetUnfolderBase]: 4109/5932 cut-off events. [2024-06-27 22:44:35,776 INFO L125 PetriNetUnfolderBase]: For 2337/2345 co-relation queries the response was YES. [2024-06-27 22:44:35,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14243 conditions, 5932 events. 4109/5932 cut-off events. For 2337/2345 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30392 event pairs, 1065 based on Foata normal form. 14/5945 useless extension candidates. Maximal degree in co-relation 14229. Up to 5751 conditions per place. [2024-06-27 22:44:35,802 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 76 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-06-27 22:44:35,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 91 transitions, 426 flow [2024-06-27 22:44:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:44:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:44:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-27 22:44:35,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 22:44:35,805 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 152 flow. Second operand 5 states and 138 transitions. [2024-06-27 22:44:35,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 91 transitions, 426 flow [2024-06-27 22:44:35,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 91 transitions, 412 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:44:35,807 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 173 flow [2024-06-27 22:44:35,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 22:44:35,808 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places. [2024-06-27 22:44:35,808 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 173 flow [2024-06-27 22:44:35,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:35,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:35,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:35,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:44:35,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:35,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1518911482, now seen corresponding path program 1 times [2024-06-27 22:44:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:35,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419239891] [2024-06-27 22:44:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:35,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419239891] [2024-06-27 22:44:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419239891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:38,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:38,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:44:38,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201085201] [2024-06-27 22:44:38,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:44:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:44:38,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:44:38,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:44:38,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:38,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:38,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:44:38,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:39,488 INFO L124 PetriNetUnfolderBase]: 3369/4885 cut-off events. [2024-06-27 22:44:39,488 INFO L125 PetriNetUnfolderBase]: For 3509/3509 co-relation queries the response was YES. [2024-06-27 22:44:39,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12490 conditions, 4885 events. 3369/4885 cut-off events. For 3509/3509 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 25264 event pairs, 1408 based on Foata normal form. 2/4886 useless extension candidates. Maximal degree in co-relation 12474. Up to 4839 conditions per place. [2024-06-27 22:44:39,516 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 61 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-27 22:44:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 395 flow [2024-06-27 22:44:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:44:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:44:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 22:44:39,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-27 22:44:39,520 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 173 flow. Second operand 5 states and 118 transitions. [2024-06-27 22:44:39,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 395 flow [2024-06-27 22:44:39,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 370 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:44:39,525 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 213 flow [2024-06-27 22:44:39,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-06-27 22:44:39,527 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2024-06-27 22:44:39,527 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 213 flow [2024-06-27 22:44:39,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:39,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:39,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:39,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:44:39,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:39,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 158386371, now seen corresponding path program 1 times [2024-06-27 22:44:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930716426] [2024-06-27 22:44:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930716426] [2024-06-27 22:44:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930716426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:42,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:44:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315094503] [2024-06-27 22:44:42,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:42,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:44:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:44:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:44:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:44:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2024-06-27 22:44:42,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:44:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:43,619 INFO L124 PetriNetUnfolderBase]: 4189/6040 cut-off events. [2024-06-27 22:44:43,619 INFO L125 PetriNetUnfolderBase]: For 5985/5985 co-relation queries the response was YES. [2024-06-27 22:44:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16117 conditions, 6040 events. 4189/6040 cut-off events. For 5985/5985 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30638 event pairs, 1472 based on Foata normal form. 8/6047 useless extension candidates. Maximal degree in co-relation 16097. Up to 5695 conditions per place. [2024-06-27 22:44:43,644 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 90 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-06-27 22:44:43,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 112 transitions, 611 flow [2024-06-27 22:44:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:44:43,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:44:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 22:44:43,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-27 22:44:43,649 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 213 flow. Second operand 6 states and 148 transitions. [2024-06-27 22:44:43,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 112 transitions, 611 flow [2024-06-27 22:44:43,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 112 transitions, 586 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:44:43,662 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 332 flow [2024-06-27 22:44:43,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-27 22:44:43,664 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2024-06-27 22:44:43,665 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 332 flow [2024-06-27 22:44:43,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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) [2024-06-27 22:44:43,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:43,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:43,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:44:43,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:43,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:43,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1448247172, now seen corresponding path program 1 times [2024-06-27 22:44:43,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160480405] [2024-06-27 22:44:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:43,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:47,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160480405] [2024-06-27 22:44:47,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160480405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:47,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:47,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:44:47,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832175929] [2024-06-27 22:44:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:44:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:47,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:44:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:44:47,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:44:47,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:47,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:47,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:44:47,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:49,075 INFO L124 PetriNetUnfolderBase]: 4298/6193 cut-off events. [2024-06-27 22:44:49,076 INFO L125 PetriNetUnfolderBase]: For 9858/9858 co-relation queries the response was YES. [2024-06-27 22:44:49,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18888 conditions, 6193 events. 4298/6193 cut-off events. For 9858/9858 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 31552 event pairs, 1156 based on Foata normal form. 6/6198 useless extension candidates. Maximal degree in co-relation 18862. Up to 5883 conditions per place. [2024-06-27 22:44:49,112 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 150 selfloop transitions, 34 changer transitions 0/189 dead transitions. [2024-06-27 22:44:49,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 189 transitions, 1082 flow [2024-06-27 22:44:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:49,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-27 22:44:49,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-06-27 22:44:49,114 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 332 flow. Second operand 10 states and 261 transitions. [2024-06-27 22:44:49,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 189 transitions, 1082 flow [2024-06-27 22:44:49,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 189 transitions, 1078 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:44:49,126 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 559 flow [2024-06-27 22:44:49,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=559, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-06-27 22:44:49,129 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2024-06-27 22:44:49,129 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 559 flow [2024-06-27 22:44:49,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:49,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:49,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:49,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:44:49,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1487513656, now seen corresponding path program 1 times [2024-06-27 22:44:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:49,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336878158] [2024-06-27 22:44:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:52,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:52,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336878158] [2024-06-27 22:44:52,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336878158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:52,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:52,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:44:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435479955] [2024-06-27 22:44:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:44:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:44:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:44:52,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:44:52,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:52,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:52,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:44:52,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:54,543 INFO L124 PetriNetUnfolderBase]: 4991/7150 cut-off events. [2024-06-27 22:44:54,544 INFO L125 PetriNetUnfolderBase]: For 18008/18012 co-relation queries the response was YES. [2024-06-27 22:44:54,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24950 conditions, 7150 events. 4991/7150 cut-off events. For 18008/18012 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 36640 event pairs, 1469 based on Foata normal form. 12/7161 useless extension candidates. Maximal degree in co-relation 24916. Up to 6489 conditions per place. [2024-06-27 22:44:54,586 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 144 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-27 22:44:54,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 185 transitions, 1321 flow [2024-06-27 22:44:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:44:54,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-27 22:44:54,588 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 559 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:44:54,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 185 transitions, 1321 flow [2024-06-27 22:44:54,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 185 transitions, 1267 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 22:44:54,615 INFO L231 Difference]: Finished difference. Result has 90 places, 107 transitions, 773 flow [2024-06-27 22:44:54,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=773, PETRI_PLACES=90, PETRI_TRANSITIONS=107} [2024-06-27 22:44:54,616 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2024-06-27 22:44:54,616 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 107 transitions, 773 flow [2024-06-27 22:44:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:54,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:54,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:44:54,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:54,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2128189334, now seen corresponding path program 2 times [2024-06-27 22:44:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260954386] [2024-06-27 22:44:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:58,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260954386] [2024-06-27 22:44:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260954386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:58,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:44:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494831983] [2024-06-27 22:44:58,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:58,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:44:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:44:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:44:58,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:44:58,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 107 transitions, 773 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:58,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:58,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:44:58,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:59,953 INFO L124 PetriNetUnfolderBase]: 5061/7249 cut-off events. [2024-06-27 22:44:59,953 INFO L125 PetriNetUnfolderBase]: For 24825/24829 co-relation queries the response was YES. [2024-06-27 22:44:59,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27898 conditions, 7249 events. 5061/7249 cut-off events. For 24825/24829 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 37199 event pairs, 1517 based on Foata normal form. 8/7256 useless extension candidates. Maximal degree in co-relation 27856. Up to 7020 conditions per place. [2024-06-27 22:45:00,000 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 130 selfloop transitions, 29 changer transitions 0/164 dead transitions. [2024-06-27 22:45:00,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 164 transitions, 1281 flow [2024-06-27 22:45:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 22:45:00,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:45:00,002 INFO L175 Difference]: Start difference. First operand has 90 places, 107 transitions, 773 flow. Second operand 8 states and 176 transitions. [2024-06-27 22:45:00,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 164 transitions, 1281 flow [2024-06-27 22:45:00,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 164 transitions, 1239 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:00,048 INFO L231 Difference]: Finished difference. Result has 97 places, 112 transitions, 857 flow [2024-06-27 22:45:00,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=97, PETRI_TRANSITIONS=112} [2024-06-27 22:45:00,049 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2024-06-27 22:45:00,050 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 112 transitions, 857 flow [2024-06-27 22:45:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:00,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:00,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:00,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:45:00,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1958365706, now seen corresponding path program 2 times [2024-06-27 22:45:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:00,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333857455] [2024-06-27 22:45:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:00,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:03,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333857455] [2024-06-27 22:45:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333857455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:03,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:03,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:03,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200255873] [2024-06-27 22:45:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:03,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:03,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:03,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:03,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 112 transitions, 857 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:03,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:03,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:03,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:05,477 INFO L124 PetriNetUnfolderBase]: 5151/7371 cut-off events. [2024-06-27 22:45:05,478 INFO L125 PetriNetUnfolderBase]: For 26522/26530 co-relation queries the response was YES. [2024-06-27 22:45:05,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28454 conditions, 7371 events. 5151/7371 cut-off events. For 26522/26530 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37810 event pairs, 1488 based on Foata normal form. 16/7386 useless extension candidates. Maximal degree in co-relation 28409. Up to 6948 conditions per place. [2024-06-27 22:45:05,512 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 140 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-06-27 22:45:05,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 178 transitions, 1428 flow [2024-06-27 22:45:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:45:05,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:45:05,514 INFO L175 Difference]: Start difference. First operand has 97 places, 112 transitions, 857 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:45:05,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 178 transitions, 1428 flow [2024-06-27 22:45:05,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 178 transitions, 1348 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:05,551 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 926 flow [2024-06-27 22:45:05,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2024-06-27 22:45:05,552 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 50 predicate places. [2024-06-27 22:45:05,552 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 926 flow [2024-06-27 22:45:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:05,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:05,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:05,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:45:05,557 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:05,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1887051692, now seen corresponding path program 3 times [2024-06-27 22:45:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882719429] [2024-06-27 22:45:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882719429] [2024-06-27 22:45:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882719429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:09,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:09,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:09,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613477079] [2024-06-27 22:45:09,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:09,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:09,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:09,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:09,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 926 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:09,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:09,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:09,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:11,865 INFO L124 PetriNetUnfolderBase]: 5221/7466 cut-off events. [2024-06-27 22:45:11,866 INFO L125 PetriNetUnfolderBase]: For 31293/31301 co-relation queries the response was YES. [2024-06-27 22:45:11,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29946 conditions, 7466 events. 5221/7466 cut-off events. For 31293/31301 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 38296 event pairs, 1520 based on Foata normal form. 12/7477 useless extension candidates. Maximal degree in co-relation 29900. Up to 7131 conditions per place. [2024-06-27 22:45:11,911 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 143 selfloop transitions, 40 changer transitions 0/188 dead transitions. [2024-06-27 22:45:11,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 188 transitions, 1564 flow [2024-06-27 22:45:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:45:11,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 22:45:11,913 INFO L175 Difference]: Start difference. First operand has 100 places, 119 transitions, 926 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:45:11,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 188 transitions, 1564 flow [2024-06-27 22:45:11,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 188 transitions, 1500 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:45:11,968 INFO L231 Difference]: Finished difference. Result has 105 places, 124 transitions, 1010 flow [2024-06-27 22:45:11,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1010, PETRI_PLACES=105, PETRI_TRANSITIONS=124} [2024-06-27 22:45:11,969 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 55 predicate places. [2024-06-27 22:45:11,969 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 124 transitions, 1010 flow [2024-06-27 22:45:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:11,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:11,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:45:11,970 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:11,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1887289028, now seen corresponding path program 3 times [2024-06-27 22:45:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:11,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648259840] [2024-06-27 22:45:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:11,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:15,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648259840] [2024-06-27 22:45:15,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648259840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:15,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:15,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715415548] [2024-06-27 22:45:15,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:15,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:15,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:15,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:15,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 1010 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:15,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:15,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:17,476 INFO L124 PetriNetUnfolderBase]: 5487/7846 cut-off events. [2024-06-27 22:45:17,476 INFO L125 PetriNetUnfolderBase]: For 34731/34739 co-relation queries the response was YES. [2024-06-27 22:45:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31647 conditions, 7846 events. 5487/7846 cut-off events. For 34731/34739 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 40326 event pairs, 1376 based on Foata normal form. 16/7861 useless extension candidates. Maximal degree in co-relation 31600. Up to 6261 conditions per place. [2024-06-27 22:45:17,524 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 132 selfloop transitions, 60 changer transitions 0/197 dead transitions. [2024-06-27 22:45:17,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 197 transitions, 1758 flow [2024-06-27 22:45:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:45:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:45:17,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:45:17,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590062111801242 [2024-06-27 22:45:17,537 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 1010 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:45:17,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 197 transitions, 1758 flow [2024-06-27 22:45:17,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 197 transitions, 1660 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:45:17,593 INFO L231 Difference]: Finished difference. Result has 109 places, 139 transitions, 1237 flow [2024-06-27 22:45:17,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1237, PETRI_PLACES=109, PETRI_TRANSITIONS=139} [2024-06-27 22:45:17,594 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 59 predicate places. [2024-06-27 22:45:17,594 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 139 transitions, 1237 flow [2024-06-27 22:45:17,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:17,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:17,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:45:17,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 344179208, now seen corresponding path program 4 times [2024-06-27 22:45:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22709294] [2024-06-27 22:45:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22709294] [2024-06-27 22:45:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22709294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:20,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494818198] [2024-06-27 22:45:20,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:20,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:20,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:20,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:20,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:20,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:20,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 139 transitions, 1237 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:20,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:20,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:20,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:21,785 INFO L124 PetriNetUnfolderBase]: 5477/7814 cut-off events. [2024-06-27 22:45:21,785 INFO L125 PetriNetUnfolderBase]: For 43634/43644 co-relation queries the response was YES. [2024-06-27 22:45:21,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34534 conditions, 7814 events. 5477/7814 cut-off events. For 43634/43644 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 40286 event pairs, 1574 based on Foata normal form. 14/7827 useless extension candidates. Maximal degree in co-relation 34483. Up to 7485 conditions per place. [2024-06-27 22:45:21,829 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 132 selfloop transitions, 39 changer transitions 0/176 dead transitions. [2024-06-27 22:45:21,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 176 transitions, 1677 flow [2024-06-27 22:45:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:45:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:45:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 22:45:21,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658385093167702 [2024-06-27 22:45:21,831 INFO L175 Difference]: Start difference. First operand has 109 places, 139 transitions, 1237 flow. Second operand 7 states and 150 transitions. [2024-06-27 22:45:21,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 176 transitions, 1677 flow [2024-06-27 22:45:21,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 1601 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:21,926 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1261 flow [2024-06-27 22:45:21,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1261, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2024-06-27 22:45:21,927 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 65 predicate places. [2024-06-27 22:45:21,927 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1261 flow [2024-06-27 22:45:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:21,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:21,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:21,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:45:21,928 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:21,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 344179394, now seen corresponding path program 4 times [2024-06-27 22:45:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019029563] [2024-06-27 22:45:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:24,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019029563] [2024-06-27 22:45:24,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019029563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:24,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:24,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:45:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450555036] [2024-06-27 22:45:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:24,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:45:24,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:45:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:45:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:24,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1261 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:24,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:24,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:27,065 INFO L124 PetriNetUnfolderBase]: 5775/8222 cut-off events. [2024-06-27 22:45:27,065 INFO L125 PetriNetUnfolderBase]: For 42997/43007 co-relation queries the response was YES. [2024-06-27 22:45:27,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35211 conditions, 8222 events. 5775/8222 cut-off events. For 42997/43007 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 42315 event pairs, 1341 based on Foata normal form. 18/8239 useless extension candidates. Maximal degree in co-relation 35157. Up to 6907 conditions per place. [2024-06-27 22:45:27,114 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 136 selfloop transitions, 65 changer transitions 0/206 dead transitions. [2024-06-27 22:45:27,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 206 transitions, 1963 flow [2024-06-27 22:45:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:45:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:45:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:45:27,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806763285024155 [2024-06-27 22:45:27,116 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1261 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:45:27,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 206 transitions, 1963 flow [2024-06-27 22:45:27,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 206 transitions, 1863 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:45:27,171 INFO L231 Difference]: Finished difference. Result has 119 places, 149 transitions, 1492 flow [2024-06-27 22:45:27,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1492, PETRI_PLACES=119, PETRI_TRANSITIONS=149} [2024-06-27 22:45:27,172 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-06-27 22:45:27,172 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 149 transitions, 1492 flow [2024-06-27 22:45:27,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:27,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:27,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:45:27,173 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:27,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1885514018, now seen corresponding path program 1 times [2024-06-27 22:45:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998114817] [2024-06-27 22:45:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:32,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:32,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998114817] [2024-06-27 22:45:32,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998114817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:32,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:32,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298982404] [2024-06-27 22:45:32,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:32,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:32,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:32,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:33,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:33,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 149 transitions, 1492 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:33,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:33,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:33,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:35,405 INFO L124 PetriNetUnfolderBase]: 5995/8583 cut-off events. [2024-06-27 22:45:35,405 INFO L125 PetriNetUnfolderBase]: For 46858/46858 co-relation queries the response was YES. [2024-06-27 22:45:35,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38018 conditions, 8583 events. 5995/8583 cut-off events. For 46858/46858 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 44929 event pairs, 1586 based on Foata normal form. 16/8598 useless extension candidates. Maximal degree in co-relation 37962. Up to 7871 conditions per place. [2024-06-27 22:45:35,473 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 185 selfloop transitions, 21 changer transitions 0/211 dead transitions. [2024-06-27 22:45:35,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 211 transitions, 2130 flow [2024-06-27 22:45:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:45:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:45:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:45:35,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 22:45:35,476 INFO L175 Difference]: Start difference. First operand has 119 places, 149 transitions, 1492 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:45:35,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 211 transitions, 2130 flow [2024-06-27 22:45:35,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 211 transitions, 2002 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:35,560 INFO L231 Difference]: Finished difference. Result has 119 places, 151 transitions, 1442 flow [2024-06-27 22:45:35,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1442, PETRI_PLACES=119, PETRI_TRANSITIONS=151} [2024-06-27 22:45:35,561 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 69 predicate places. [2024-06-27 22:45:35,561 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 151 transitions, 1442 flow [2024-06-27 22:45:35,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:35,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:35,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:35,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:45:35,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:35,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1464200767, now seen corresponding path program 1 times [2024-06-27 22:45:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403711520] [2024-06-27 22:45:35,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:35,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:38,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403711520] [2024-06-27 22:45:38,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403711520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762975606] [2024-06-27 22:45:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:38,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:38,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:38,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 151 transitions, 1442 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:38,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:38,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:38,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:42,947 INFO L124 PetriNetUnfolderBase]: 7610/10792 cut-off events. [2024-06-27 22:45:42,947 INFO L125 PetriNetUnfolderBase]: For 58689/58689 co-relation queries the response was YES. [2024-06-27 22:45:42,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46001 conditions, 10792 events. 7610/10792 cut-off events. For 58689/58689 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 58003 event pairs, 1443 based on Foata normal form. 20/10811 useless extension candidates. Maximal degree in co-relation 45947. Up to 7295 conditions per place. [2024-06-27 22:45:43,020 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 244 selfloop transitions, 110 changer transitions 0/359 dead transitions. [2024-06-27 22:45:43,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 359 transitions, 3030 flow [2024-06-27 22:45:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 22:45:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 22:45:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 421 transitions. [2024-06-27 22:45:43,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720108695652174 [2024-06-27 22:45:43,023 INFO L175 Difference]: Start difference. First operand has 119 places, 151 transitions, 1442 flow. Second operand 16 states and 421 transitions. [2024-06-27 22:45:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 359 transitions, 3030 flow [2024-06-27 22:45:43,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 359 transitions, 2974 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:43,126 INFO L231 Difference]: Finished difference. Result has 133 places, 186 transitions, 1971 flow [2024-06-27 22:45:43,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1971, PETRI_PLACES=133, PETRI_TRANSITIONS=186} [2024-06-27 22:45:43,127 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2024-06-27 22:45:43,128 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 186 transitions, 1971 flow [2024-06-27 22:45:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:43,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:43,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:43,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:45:43,129 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:43,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:43,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1467925417, now seen corresponding path program 2 times [2024-06-27 22:45:43,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:43,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099134647] [2024-06-27 22:45:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:43,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:46,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099134647] [2024-06-27 22:45:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099134647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:46,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:46,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:46,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856608793] [2024-06-27 22:45:46,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:46,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:46,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 186 transitions, 1971 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:46,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:46,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:46,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:49,832 INFO L124 PetriNetUnfolderBase]: 9089/12994 cut-off events. [2024-06-27 22:45:49,833 INFO L125 PetriNetUnfolderBase]: For 108699/108719 co-relation queries the response was YES. [2024-06-27 22:45:49,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69145 conditions, 12994 events. 9089/12994 cut-off events. For 108699/108719 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 72386 event pairs, 1936 based on Foata normal form. 32/13025 useless extension candidates. Maximal degree in co-relation 69087. Up to 10770 conditions per place. [2024-06-27 22:45:49,926 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 280 selfloop transitions, 68 changer transitions 0/353 dead transitions. [2024-06-27 22:45:49,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 353 transitions, 3789 flow [2024-06-27 22:45:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:45:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:45:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 311 transitions. [2024-06-27 22:45:49,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520066889632107 [2024-06-27 22:45:49,929 INFO L175 Difference]: Start difference. First operand has 133 places, 186 transitions, 1971 flow. Second operand 13 states and 311 transitions. [2024-06-27 22:45:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 353 transitions, 3789 flow [2024-06-27 22:45:50,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 353 transitions, 3526 flow, removed 94 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:50,189 INFO L231 Difference]: Finished difference. Result has 143 places, 225 transitions, 2438 flow [2024-06-27 22:45:50,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2438, PETRI_PLACES=143, PETRI_TRANSITIONS=225} [2024-06-27 22:45:50,189 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 93 predicate places. [2024-06-27 22:45:50,189 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 225 transitions, 2438 flow [2024-06-27 22:45:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:50,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:50,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:45:50,190 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:50,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1131713211, now seen corresponding path program 3 times [2024-06-27 22:45:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:50,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814850605] [2024-06-27 22:45:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:50,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:53,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:53,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814850605] [2024-06-27 22:45:53,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814850605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:53,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:45:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936495298] [2024-06-27 22:45:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:53,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:45:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:45:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:45:53,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:45:53,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 225 transitions, 2438 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:53,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:53,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:45:53,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:56,837 INFO L124 PetriNetUnfolderBase]: 9454/13450 cut-off events. [2024-06-27 22:45:56,837 INFO L125 PetriNetUnfolderBase]: For 137762/137783 co-relation queries the response was YES. [2024-06-27 22:45:56,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78108 conditions, 13450 events. 9454/13450 cut-off events. For 137762/137783 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 74582 event pairs, 1910 based on Foata normal form. 32/13481 useless extension candidates. Maximal degree in co-relation 78043. Up to 10648 conditions per place. [2024-06-27 22:45:56,962 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 257 selfloop transitions, 78 changer transitions 0/340 dead transitions. [2024-06-27 22:45:56,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 340 transitions, 3797 flow [2024-06-27 22:45:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2024-06-27 22:45:56,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237154150197628 [2024-06-27 22:45:56,965 INFO L175 Difference]: Start difference. First operand has 143 places, 225 transitions, 2438 flow. Second operand 11 states and 265 transitions. [2024-06-27 22:45:56,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 340 transitions, 3797 flow [2024-06-27 22:45:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 340 transitions, 3661 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 22:45:57,283 INFO L231 Difference]: Finished difference. Result has 150 places, 235 transitions, 2607 flow [2024-06-27 22:45:57,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2607, PETRI_PLACES=150, PETRI_TRANSITIONS=235} [2024-06-27 22:45:57,284 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2024-06-27 22:45:57,284 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 235 transitions, 2607 flow [2024-06-27 22:45:57,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:57,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:57,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:57,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:45:57,284 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:57,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash -821791891, now seen corresponding path program 4 times [2024-06-27 22:45:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:57,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554557747] [2024-06-27 22:45:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:57,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:00,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:00,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554557747] [2024-06-27 22:46:00,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554557747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:00,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:00,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:00,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859123050] [2024-06-27 22:46:00,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:00,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:00,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:00,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:00,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 235 transitions, 2607 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:00,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:00,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:00,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:04,573 INFO L124 PetriNetUnfolderBase]: 10706/15078 cut-off events. [2024-06-27 22:46:04,574 INFO L125 PetriNetUnfolderBase]: For 161890/161900 co-relation queries the response was YES. [2024-06-27 22:46:04,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90315 conditions, 15078 events. 10706/15078 cut-off events. For 161890/161900 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 83113 event pairs, 1401 based on Foata normal form. 26/15103 useless extension candidates. Maximal degree in co-relation 90247. Up to 9120 conditions per place. [2024-06-27 22:46:04,733 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 224 selfloop transitions, 144 changer transitions 0/373 dead transitions. [2024-06-27 22:46:04,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 373 transitions, 4434 flow [2024-06-27 22:46:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-27 22:46:04,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395256916996047 [2024-06-27 22:46:04,735 INFO L175 Difference]: Start difference. First operand has 150 places, 235 transitions, 2607 flow. Second operand 11 states and 273 transitions. [2024-06-27 22:46:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 373 transitions, 4434 flow [2024-06-27 22:46:05,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 373 transitions, 4328 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:46:05,040 INFO L231 Difference]: Finished difference. Result has 155 places, 259 transitions, 3134 flow [2024-06-27 22:46:05,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3134, PETRI_PLACES=155, PETRI_TRANSITIONS=259} [2024-06-27 22:46:05,041 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 105 predicate places. [2024-06-27 22:46:05,041 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 259 transitions, 3134 flow [2024-06-27 22:46:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:05,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:05,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:46:05,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1686234133, now seen corresponding path program 5 times [2024-06-27 22:46:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593715468] [2024-06-27 22:46:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:08,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593715468] [2024-06-27 22:46:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593715468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:08,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:08,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80037481] [2024-06-27 22:46:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:08,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:08,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 259 transitions, 3134 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:08,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:08,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:08,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:12,883 INFO L124 PetriNetUnfolderBase]: 11978/17098 cut-off events. [2024-06-27 22:46:12,883 INFO L125 PetriNetUnfolderBase]: For 211691/211701 co-relation queries the response was YES. [2024-06-27 22:46:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108225 conditions, 17098 events. 11978/17098 cut-off events. For 211691/211701 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 98856 event pairs, 2647 based on Foata normal form. 31/17128 useless extension candidates. Maximal degree in co-relation 108154. Up to 14722 conditions per place. [2024-06-27 22:46:13,058 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 326 selfloop transitions, 65 changer transitions 0/396 dead transitions. [2024-06-27 22:46:13,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 396 transitions, 4882 flow [2024-06-27 22:46:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:46:13,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:46:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 279 transitions. [2024-06-27 22:46:13,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 22:46:13,060 INFO L175 Difference]: Start difference. First operand has 155 places, 259 transitions, 3134 flow. Second operand 12 states and 279 transitions. [2024-06-27 22:46:13,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 396 transitions, 4882 flow [2024-06-27 22:46:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 396 transitions, 4628 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:13,572 INFO L231 Difference]: Finished difference. Result has 162 places, 276 transitions, 3326 flow [2024-06-27 22:46:13,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3326, PETRI_PLACES=162, PETRI_TRANSITIONS=276} [2024-06-27 22:46:13,573 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 112 predicate places. [2024-06-27 22:46:13,573 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 276 transitions, 3326 flow [2024-06-27 22:46:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:13,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:13,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:13,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:46:13,574 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:13,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:13,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1611810367, now seen corresponding path program 6 times [2024-06-27 22:46:13,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:13,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216393473] [2024-06-27 22:46:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:17,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216393473] [2024-06-27 22:46:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216393473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357249187] [2024-06-27 22:46:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:17,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:17,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 276 transitions, 3326 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:17,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:17,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:22,201 INFO L124 PetriNetUnfolderBase]: 11949/17063 cut-off events. [2024-06-27 22:46:22,202 INFO L125 PetriNetUnfolderBase]: For 203347/203357 co-relation queries the response was YES. [2024-06-27 22:46:22,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106981 conditions, 17063 events. 11949/17063 cut-off events. For 203347/203357 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 98725 event pairs, 2676 based on Foata normal form. 27/17089 useless extension candidates. Maximal degree in co-relation 106908. Up to 14714 conditions per place. [2024-06-27 22:46:22,365 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 322 selfloop transitions, 64 changer transitions 0/391 dead transitions. [2024-06-27 22:46:22,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 391 transitions, 4716 flow [2024-06-27 22:46:22,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-06-27 22:46:22,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375494071146245 [2024-06-27 22:46:22,367 INFO L175 Difference]: Start difference. First operand has 162 places, 276 transitions, 3326 flow. Second operand 11 states and 272 transitions. [2024-06-27 22:46:22,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 391 transitions, 4716 flow [2024-06-27 22:46:22,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 391 transitions, 4594 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:46:22,944 INFO L231 Difference]: Finished difference. Result has 166 places, 276 transitions, 3344 flow [2024-06-27 22:46:22,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3344, PETRI_PLACES=166, PETRI_TRANSITIONS=276} [2024-06-27 22:46:22,945 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 116 predicate places. [2024-06-27 22:46:22,945 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 276 transitions, 3344 flow [2024-06-27 22:46:22,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:22,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:22,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:46:22,946 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:22,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1664044043, now seen corresponding path program 7 times [2024-06-27 22:46:22,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:22,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409971377] [2024-06-27 22:46:22,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:22,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:25,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:25,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409971377] [2024-06-27 22:46:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409971377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:25,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:25,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948253166] [2024-06-27 22:46:25,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:25,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:26,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:26,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 276 transitions, 3344 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:26,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:26,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:26,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:30,166 INFO L124 PetriNetUnfolderBase]: 12302/17395 cut-off events. [2024-06-27 22:46:30,166 INFO L125 PetriNetUnfolderBase]: For 207237/207247 co-relation queries the response was YES. [2024-06-27 22:46:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110095 conditions, 17395 events. 12302/17395 cut-off events. For 207237/207247 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 98507 event pairs, 1734 based on Foata normal form. 36/17430 useless extension candidates. Maximal degree in co-relation 110020. Up to 11195 conditions per place. [2024-06-27 22:46:30,377 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 244 selfloop transitions, 151 changer transitions 0/400 dead transitions. [2024-06-27 22:46:30,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 400 transitions, 5055 flow [2024-06-27 22:46:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:46:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:46:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 284 transitions. [2024-06-27 22:46:30,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 22:46:30,379 INFO L175 Difference]: Start difference. First operand has 166 places, 276 transitions, 3344 flow. Second operand 12 states and 284 transitions. [2024-06-27 22:46:30,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 400 transitions, 5055 flow [2024-06-27 22:46:30,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 400 transitions, 4900 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 22:46:30,914 INFO L231 Difference]: Finished difference. Result has 170 places, 282 transitions, 3670 flow [2024-06-27 22:46:30,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3670, PETRI_PLACES=170, PETRI_TRANSITIONS=282} [2024-06-27 22:46:30,915 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2024-06-27 22:46:30,915 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 282 transitions, 3670 flow [2024-06-27 22:46:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:30,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:30,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:46:30,915 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:30,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2079622913, now seen corresponding path program 8 times [2024-06-27 22:46:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553444305] [2024-06-27 22:46:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:30,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:34,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:34,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553444305] [2024-06-27 22:46:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553444305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:34,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:34,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:34,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185119840] [2024-06-27 22:46:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:34,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:34,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:34,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:34,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:34,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 282 transitions, 3670 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:34,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:34,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:34,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:38,324 INFO L124 PetriNetUnfolderBase]: 12273/17366 cut-off events. [2024-06-27 22:46:38,324 INFO L125 PetriNetUnfolderBase]: For 221339/221349 co-relation queries the response was YES. [2024-06-27 22:46:38,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113627 conditions, 17366 events. 12273/17366 cut-off events. For 221339/221349 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 98536 event pairs, 1911 based on Foata normal form. 27/17392 useless extension candidates. Maximal degree in co-relation 113550. Up to 11187 conditions per place. [2024-06-27 22:46:38,494 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 226 selfloop transitions, 137 changer transitions 0/368 dead transitions. [2024-06-27 22:46:38,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 368 transitions, 4953 flow [2024-06-27 22:46:38,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:46:38,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-27 22:46:38,498 INFO L175 Difference]: Start difference. First operand has 170 places, 282 transitions, 3670 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:46:38,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 368 transitions, 4953 flow [2024-06-27 22:46:39,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 368 transitions, 4684 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 22:46:39,215 INFO L231 Difference]: Finished difference. Result has 170 places, 282 transitions, 3720 flow [2024-06-27 22:46:39,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3720, PETRI_PLACES=170, PETRI_TRANSITIONS=282} [2024-06-27 22:46:39,215 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2024-06-27 22:46:39,215 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 282 transitions, 3720 flow [2024-06-27 22:46:39,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:39,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:39,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:46:39,216 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:39,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 139777854, now seen corresponding path program 1 times [2024-06-27 22:46:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750932380] [2024-06-27 22:46:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750932380] [2024-06-27 22:46:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750932380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:40,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:40,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:46:40,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976266334] [2024-06-27 22:46:40,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:46:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:40,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:46:40,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:46:40,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:40,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 282 transitions, 3720 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:40,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:40,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:40,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:44,265 INFO L124 PetriNetUnfolderBase]: 12201/17521 cut-off events. [2024-06-27 22:46:44,266 INFO L125 PetriNetUnfolderBase]: For 226211/226217 co-relation queries the response was YES. [2024-06-27 22:46:44,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113028 conditions, 17521 events. 12201/17521 cut-off events. For 226211/226217 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 102482 event pairs, 2752 based on Foata normal form. 14/17534 useless extension candidates. Maximal degree in co-relation 112951. Up to 16631 conditions per place. [2024-06-27 22:46:44,427 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 284 selfloop transitions, 18 changer transitions 0/307 dead transitions. [2024-06-27 22:46:44,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 307 transitions, 4458 flow [2024-06-27 22:46:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 22:46:44,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-27 22:46:44,429 INFO L175 Difference]: Start difference. First operand has 170 places, 282 transitions, 3720 flow. Second operand 5 states and 118 transitions. [2024-06-27 22:46:44,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 307 transitions, 4458 flow [2024-06-27 22:46:44,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 307 transitions, 4151 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 22:46:44,918 INFO L231 Difference]: Finished difference. Result has 165 places, 282 transitions, 3462 flow [2024-06-27 22:46:44,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3462, PETRI_PLACES=165, PETRI_TRANSITIONS=282} [2024-06-27 22:46:44,919 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 115 predicate places. [2024-06-27 22:46:44,919 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 282 transitions, 3462 flow [2024-06-27 22:46:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:44,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:44,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:46:44,920 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:44,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1857276311, now seen corresponding path program 1 times [2024-06-27 22:46:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651638403] [2024-06-27 22:46:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:48,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651638403] [2024-06-27 22:46:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651638403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:48,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:48,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490424711] [2024-06-27 22:46:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:48,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:48,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:48,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 282 transitions, 3462 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:48,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:48,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:52,345 INFO L124 PetriNetUnfolderBase]: 12251/17486 cut-off events. [2024-06-27 22:46:52,346 INFO L125 PetriNetUnfolderBase]: For 196529/196529 co-relation queries the response was YES. [2024-06-27 22:46:52,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109525 conditions, 17486 events. 12251/17486 cut-off events. For 196529/196529 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 101579 event pairs, 1998 based on Foata normal form. 4/17489 useless extension candidates. Maximal degree in co-relation 109448. Up to 16343 conditions per place. [2024-06-27 22:46:52,570 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 330 selfloop transitions, 55 changer transitions 0/390 dead transitions. [2024-06-27 22:46:52,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 390 transitions, 4780 flow [2024-06-27 22:46:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:52,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-06-27 22:46:52,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:46:52,572 INFO L175 Difference]: Start difference. First operand has 165 places, 282 transitions, 3462 flow. Second operand 11 states and 264 transitions. [2024-06-27 22:46:52,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 390 transitions, 4780 flow [2024-06-27 22:46:53,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 390 transitions, 4765 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:53,157 INFO L231 Difference]: Finished difference. Result has 174 places, 286 transitions, 3660 flow [2024-06-27 22:46:53,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3660, PETRI_PLACES=174, PETRI_TRANSITIONS=286} [2024-06-27 22:46:53,160 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 124 predicate places. [2024-06-27 22:46:53,160 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 286 transitions, 3660 flow [2024-06-27 22:46:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:53,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:53,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:53,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:46:53,161 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:53,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1857215861, now seen corresponding path program 2 times [2024-06-27 22:46:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321283308] [2024-06-27 22:46:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:57,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321283308] [2024-06-27 22:46:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321283308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:57,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:57,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084430908] [2024-06-27 22:46:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:57,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:46:57,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 286 transitions, 3660 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:57,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:57,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:46:57,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:02,304 INFO L124 PetriNetUnfolderBase]: 12301/17560 cut-off events. [2024-06-27 22:47:02,304 INFO L125 PetriNetUnfolderBase]: For 208677/208677 co-relation queries the response was YES. [2024-06-27 22:47:02,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111236 conditions, 17560 events. 12301/17560 cut-off events. For 208677/208677 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 101936 event pairs, 2291 based on Foata normal form. 4/17563 useless extension candidates. Maximal degree in co-relation 111157. Up to 16579 conditions per place. [2024-06-27 22:47:02,467 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 350 selfloop transitions, 55 changer transitions 0/410 dead transitions. [2024-06-27 22:47:02,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 410 transitions, 4950 flow [2024-06-27 22:47:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:47:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:47:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 309 transitions. [2024-06-27 22:47:02,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167224080267558 [2024-06-27 22:47:02,475 INFO L175 Difference]: Start difference. First operand has 174 places, 286 transitions, 3660 flow. Second operand 13 states and 309 transitions. [2024-06-27 22:47:02,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 410 transitions, 4950 flow [2024-06-27 22:47:02,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 410 transitions, 4827 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:02,970 INFO L231 Difference]: Finished difference. Result has 181 places, 288 transitions, 3709 flow [2024-06-27 22:47:02,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3553, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3709, PETRI_PLACES=181, PETRI_TRANSITIONS=288} [2024-06-27 22:47:02,970 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2024-06-27 22:47:02,970 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 288 transitions, 3709 flow [2024-06-27 22:47:02,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:02,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:02,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:47:02,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:02,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -80591625, now seen corresponding path program 1 times [2024-06-27 22:47:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332939920] [2024-06-27 22:47:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:07,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332939920] [2024-06-27 22:47:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332939920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:07,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419039812] [2024-06-27 22:47:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:07,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:07,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:07,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:47:07,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 288 transitions, 3709 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:07,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:07,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:47:07,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:11,501 INFO L124 PetriNetUnfolderBase]: 12579/17966 cut-off events. [2024-06-27 22:47:11,501 INFO L125 PetriNetUnfolderBase]: For 220723/220734 co-relation queries the response was YES. [2024-06-27 22:47:11,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113327 conditions, 17966 events. 12579/17966 cut-off events. For 220723/220734 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 104964 event pairs, 2649 based on Foata normal form. 23/17988 useless extension candidates. Maximal degree in co-relation 113247. Up to 16301 conditions per place. [2024-06-27 22:47:11,707 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 321 selfloop transitions, 56 changer transitions 0/382 dead transitions. [2024-06-27 22:47:11,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 382 transitions, 5013 flow [2024-06-27 22:47:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-06-27 22:47:11,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098814229249012 [2024-06-27 22:47:11,726 INFO L175 Difference]: Start difference. First operand has 181 places, 288 transitions, 3709 flow. Second operand 11 states and 258 transitions. [2024-06-27 22:47:11,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 382 transitions, 5013 flow [2024-06-27 22:47:12,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 382 transitions, 4873 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 22:47:12,285 INFO L231 Difference]: Finished difference. Result has 181 places, 290 transitions, 3733 flow [2024-06-27 22:47:12,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3733, PETRI_PLACES=181, PETRI_TRANSITIONS=290} [2024-06-27 22:47:12,286 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 131 predicate places. [2024-06-27 22:47:12,286 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 290 transitions, 3733 flow [2024-06-27 22:47:12,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:12,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:12,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:47:12,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:12,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -80776323, now seen corresponding path program 3 times [2024-06-27 22:47:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:12,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505750222] [2024-06-27 22:47:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505750222] [2024-06-27 22:47:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505750222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:16,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:16,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206684207] [2024-06-27 22:47:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:16,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:47:16,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 290 transitions, 3733 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:16,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:16,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:47:16,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:20,790 INFO L124 PetriNetUnfolderBase]: 12629/18190 cut-off events. [2024-06-27 22:47:20,790 INFO L125 PetriNetUnfolderBase]: For 232614/232625 co-relation queries the response was YES. [2024-06-27 22:47:20,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114830 conditions, 18190 events. 12629/18190 cut-off events. For 232614/232625 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 107957 event pairs, 2874 based on Foata normal form. 11/18200 useless extension candidates. Maximal degree in co-relation 114749. Up to 17327 conditions per place. [2024-06-27 22:47:20,982 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 320 selfloop transitions, 31 changer transitions 0/356 dead transitions. [2024-06-27 22:47:20,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 356 transitions, 4711 flow [2024-06-27 22:47:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:47:20,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806763285024155 [2024-06-27 22:47:20,984 INFO L175 Difference]: Start difference. First operand has 181 places, 290 transitions, 3733 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:47:20,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 356 transitions, 4711 flow [2024-06-27 22:47:21,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 356 transitions, 4583 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:21,574 INFO L231 Difference]: Finished difference. Result has 182 places, 292 transitions, 3716 flow [2024-06-27 22:47:21,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3716, PETRI_PLACES=182, PETRI_TRANSITIONS=292} [2024-06-27 22:47:21,574 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 132 predicate places. [2024-06-27 22:47:21,574 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 292 transitions, 3716 flow [2024-06-27 22:47:21,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:21,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:21,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:21,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:47:21,575 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:21,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 302538211, now seen corresponding path program 2 times [2024-06-27 22:47:21,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:21,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617049807] [2024-06-27 22:47:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:21,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617049807] [2024-06-27 22:47:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617049807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:26,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709753989] [2024-06-27 22:47:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:26,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:47:26,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 292 transitions, 3716 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:26,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:26,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:47:26,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:31,394 INFO L124 PetriNetUnfolderBase]: 12891/18236 cut-off events. [2024-06-27 22:47:31,394 INFO L125 PetriNetUnfolderBase]: For 237771/237781 co-relation queries the response was YES. [2024-06-27 22:47:31,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115752 conditions, 18236 events. 12891/18236 cut-off events. For 237771/237781 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 104506 event pairs, 1747 based on Foata normal form. 26/18261 useless extension candidates. Maximal degree in co-relation 115670. Up to 15785 conditions per place. [2024-06-27 22:47:31,553 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 283 selfloop transitions, 85 changer transitions 0/373 dead transitions. [2024-06-27 22:47:31,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 373 transitions, 5041 flow [2024-06-27 22:47:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 22:47:31,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:47:31,555 INFO L175 Difference]: Start difference. First operand has 182 places, 292 transitions, 3716 flow. Second operand 9 states and 216 transitions. [2024-06-27 22:47:31,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 373 transitions, 5041 flow [2024-06-27 22:47:32,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 373 transitions, 4952 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:32,159 INFO L231 Difference]: Finished difference. Result has 183 places, 294 transitions, 3851 flow [2024-06-27 22:47:32,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3851, PETRI_PLACES=183, PETRI_TRANSITIONS=294} [2024-06-27 22:47:32,160 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 133 predicate places. [2024-06-27 22:47:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 294 transitions, 3851 flow [2024-06-27 22:47:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:32,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:32,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:47:32,161 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:32,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1216906423, now seen corresponding path program 3 times [2024-06-27 22:47:32,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:32,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031719353] [2024-06-27 22:47:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031719353] [2024-06-27 22:47:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031719353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:37,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:37,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:37,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940055563] [2024-06-27 22:47:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:37,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:37,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-06-27 22:47:37,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 294 transitions, 3851 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:37,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:37,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-06-27 22:47:37,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:42,074 INFO L124 PetriNetUnfolderBase]: 13393/18958 cut-off events. [2024-06-27 22:47:42,074 INFO L125 PetriNetUnfolderBase]: For 262529/262539 co-relation queries the response was YES. [2024-06-27 22:47:42,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121766 conditions, 18958 events. 13393/18958 cut-off events. For 262529/262539 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 109442 event pairs, 1701 based on Foata normal form. 26/18983 useless extension candidates. Maximal degree in co-relation 121683. Up to 15107 conditions per place. [2024-06-27 22:47:42,280 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 286 selfloop transitions, 92 changer transitions 0/383 dead transitions. [2024-06-27 22:47:42,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 383 transitions, 5376 flow [2024-06-27 22:47:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:47:42,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2024-06-27 22:47:42,283 INFO L175 Difference]: Start difference. First operand has 183 places, 294 transitions, 3851 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:47:42,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 383 transitions, 5376 flow [2024-06-27 22:47:43,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 383 transitions, 5180 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:43,107 INFO L231 Difference]: Finished difference. Result has 185 places, 298 transitions, 3942 flow [2024-06-27 22:47:43,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3942, PETRI_PLACES=185, PETRI_TRANSITIONS=298} [2024-06-27 22:47:43,108 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 135 predicate places. [2024-06-27 22:47:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 298 transitions, 3942 flow [2024-06-27 22:47:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:43,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:43,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:43,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:47:43,109 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:43,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1573304349, now seen corresponding path program 4 times [2024-06-27 22:47:43,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:43,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701506502] [2024-06-27 22:47:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat