./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_power.oepc.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/safe014_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:47:49,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:47:49,366 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:47:49,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:47:49,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:47:49,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:47:49,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:47:49,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:47:49,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:47:49,412 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:47:49,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:47:49,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:47:49,413 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:47:49,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:47:49,415 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:47:49,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:47:49,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:47:49,415 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:47:49,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:47:49,416 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:47:49,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:47:49,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:47:49,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:47:49,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:47:49,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:47:49,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:47:49,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:47:49,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:47:49,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:47:49,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:47:49,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:47:49,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:47:49,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:47:49,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:47:49,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:47:49,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:47:49,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:47:49,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:47:49,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:47:49,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:47:49,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:47:49,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:47:49,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:47:49,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:47:49,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:47:49,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:47:49,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:47:49,669 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:47:49,670 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:47:49,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe014_power.oepc.yml/witness.yml [2024-06-27 22:47:49,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:47:49,774 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:47:49,774 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_power.oepc.i [2024-06-27 22:47:50,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:47:50,976 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:47:50,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_power.oepc.i [2024-06-27 22:47:50,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce2cf9ba/19662338c3554bd285242eac45741b52/FLAG3f4498a3c [2024-06-27 22:47:50,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ce2cf9ba/19662338c3554bd285242eac45741b52 [2024-06-27 22:47:51,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:47:51,000 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:47:51,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:47:51,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:47:51,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:47:51,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:47:49" (1/2) ... [2024-06-27 22:47:51,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602e14eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:47:51, skipping insertion in model container [2024-06-27 22:47:51,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:47:49" (1/2) ... [2024-06-27 22:47:51,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19609760 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:47:51, skipping insertion in model container [2024-06-27 22:47:51,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:47:50" (2/2) ... [2024-06-27 22:47:51,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602e14eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51, skipping insertion in model container [2024-06-27 22:47:51,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:47:50" (2/2) ... [2024-06-27 22:47:51,011 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:47:51,032 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:47:51,033 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:47:51,034 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:47:51,034 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd0 >= 0LL && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) + (long long )y$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$flush_delayed) - (long long )y$mem_tmp >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$mem_tmp) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )y$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) [2024-06-27 22:47:51,034 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:47:51,034 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-27 22:47:51,059 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:47:51,216 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/safe014_power.oepc.i[995,1008] [2024-06-27 22:47:51,363 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:47:51,382 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:47:51,440 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/safe014_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:47:51,630 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:47:51,668 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:47:51,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51 WrapperNode [2024-06-27 22:47:51,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:47:51,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:47:51,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:47:51,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:47:51,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,748 INFO L138 Inliner]: procedures = 175, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2024-06-27 22:47:51,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:47:51,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:47:51,755 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:47:51,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:47:51,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,768 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,806 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:47:51,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:47:51,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:47:51,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:47:51,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:47:51,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (1/1) ... [2024-06-27 22:47:51,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:47:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:47:51,890 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 22:47:51,958 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 22:47:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:47:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:47:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:47:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:47:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:47:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:47:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:47:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:47:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:47:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:47:51,970 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:47:51,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:47:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:47:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:47:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:47:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:47:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:47:51,972 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 22:47:52,077 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:47:52,079 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:47:52,544 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:47:52,545 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:47:52,806 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:47:52,807 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:47:52,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:47:52 BoogieIcfgContainer [2024-06-27 22:47:52,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:47:52,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:47:52,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:47:52,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:47:52,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:47:49" (1/4) ... [2024-06-27 22:47:52,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f4d06d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:47:52, skipping insertion in model container [2024-06-27 22:47:52,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:47:50" (2/4) ... [2024-06-27 22:47:52,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f4d06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:47:52, skipping insertion in model container [2024-06-27 22:47:52,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:47:51" (3/4) ... [2024-06-27 22:47:52,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74f4d06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:47:52, skipping insertion in model container [2024-06-27 22:47:52,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:47:52" (4/4) ... [2024-06-27 22:47:52,818 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_power.oepc.i [2024-06-27 22:47:52,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:47:52,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:47:52,832 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:47:52,920 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:47:52,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:47:52,978 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:47:52,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:47:52,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:47:52,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:47:52,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:47:52,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:47:53,015 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;@73dc5697, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:47:53,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:47:53,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:47:53,023 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:47:53,024 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:47:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:47:53,025 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 22:47:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 589608686, now seen corresponding path program 1 times [2024-06-27 22:47:53,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:53,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291876241] [2024-06-27 22:47:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:53,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:55,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:55,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291876241] [2024-06-27 22:47:55,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291876241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:55,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:55,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:47:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338454546] [2024-06-27 22:47:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:47:55,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:47:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:47:55,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:47:55,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:55,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:55,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:47:55,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:55,847 INFO L124 PetriNetUnfolderBase]: 2180/3473 cut-off events. [2024-06-27 22:47:55,847 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:47:55,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 3473 events. 2180/3473 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19911 event pairs, 1317 based on Foata normal form. 0/3339 useless extension candidates. Maximal degree in co-relation 6714. Up to 3184 conditions per place. [2024-06-27 22:47:55,865 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 22:47:55,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 227 flow [2024-06-27 22:47:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:47:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:47:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 22:47:55,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-27 22:47:55,876 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 93 transitions. [2024-06-27 22:47:55,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 227 flow [2024-06-27 22:47:55,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:55,880 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-27 22:47:55,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:47:55,884 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:47:55,884 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-27 22:47:55,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:55,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:55,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:55,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:47:55,885 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 22:47:55,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash -321709971, now seen corresponding path program 1 times [2024-06-27 22:47:55,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:55,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355947674] [2024-06-27 22:47:55,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:55,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:58,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:58,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355947674] [2024-06-27 22:47:58,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355947674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:58,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:58,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:47:58,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39158128] [2024-06-27 22:47:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:58,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:47:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:47:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:47:58,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:47:58,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:58,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:58,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:47:58,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:59,447 INFO L124 PetriNetUnfolderBase]: 2174/3323 cut-off events. [2024-06-27 22:47:59,448 INFO L125 PetriNetUnfolderBase]: For 604/614 co-relation queries the response was YES. [2024-06-27 22:47:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7442 conditions, 3323 events. 2174/3323 cut-off events. For 604/614 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18233 event pairs, 893 based on Foata normal form. 6/3322 useless extension candidates. Maximal degree in co-relation 7430. Up to 3142 conditions per place. [2024-06-27 22:47:59,463 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-27 22:47:59,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 355 flow [2024-06-27 22:47:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:47:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:47:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:47:59,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-27 22:47:59,465 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:47:59,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 355 flow [2024-06-27 22:47:59,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:47:59,467 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-27 22:47:59,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 22:47:59,468 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-27 22:47:59,468 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-27 22:47:59,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:59,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:59,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:59,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:47:59,469 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 22:47:59,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1988844745, now seen corresponding path program 1 times [2024-06-27 22:47:59,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:59,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715562509] [2024-06-27 22:47:59,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:59,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:02,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715562509] [2024-06-27 22:48:02,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715562509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:48:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170423369] [2024-06-27 22:48:02,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:48:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:48:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:48:02,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:48:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 22:48:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:02,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:48:02,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:03,811 INFO L124 PetriNetUnfolderBase]: 2769/4162 cut-off events. [2024-06-27 22:48:03,812 INFO L125 PetriNetUnfolderBase]: For 2308/2338 co-relation queries the response was YES. [2024-06-27 22:48:03,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 4162 events. 2769/4162 cut-off events. For 2308/2338 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22432 event pairs, 709 based on Foata normal form. 15/4168 useless extension candidates. Maximal degree in co-relation 10420. Up to 3890 conditions per place. [2024-06-27 22:48:03,833 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-06-27 22:48:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 546 flow [2024-06-27 22:48:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:48:03,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:48:03,839 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:48:03,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 546 flow [2024-06-27 22:48:03,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:48:03,847 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 258 flow [2024-06-27 22:48:03,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 22:48:03,848 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-27 22:48:03,848 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 258 flow [2024-06-27 22:48:03,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 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 22:48:03,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:03,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:48:03,849 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 22:48:03,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 757405796, now seen corresponding path program 1 times [2024-06-27 22:48:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422943165] [2024-06-27 22:48:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:05,663 INFO 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 22:48:05,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422943165] [2024-06-27 22:48:05,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422943165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:05,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:05,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:48:05,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415041221] [2024-06-27 22:48:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:48:05,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:05,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:48:05,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:48:05,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:05,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 22:48:05,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:05,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:05,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:07,037 INFO L124 PetriNetUnfolderBase]: 3305/4862 cut-off events. [2024-06-27 22:48:07,038 INFO L125 PetriNetUnfolderBase]: For 4517/4520 co-relation queries the response was YES. [2024-06-27 22:48:07,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13303 conditions, 4862 events. 3305/4862 cut-off events. For 4517/4520 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25677 event pairs, 935 based on Foata normal form. 6/4859 useless extension candidates. Maximal degree in co-relation 13283. Up to 4613 conditions per place. [2024-06-27 22:48:07,065 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 79 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-27 22:48:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 100 transitions, 625 flow [2024-06-27 22:48:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:48:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:48:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 22:48:07,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-06-27 22:48:07,067 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 258 flow. Second operand 5 states and 129 transitions. [2024-06-27 22:48:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 100 transitions, 625 flow [2024-06-27 22:48:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 584 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:07,074 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 349 flow [2024-06-27 22:48:07,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-27 22:48:07,075 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-06-27 22:48:07,076 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 349 flow [2024-06-27 22:48:07,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 22:48:07,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:07,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:07,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:48:07,077 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 22:48:07,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2014934321, now seen corresponding path program 1 times [2024-06-27 22:48:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:07,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814417440] [2024-06-27 22:48:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:08,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:08,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814417440] [2024-06-27 22:48:08,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814417440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:08,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:08,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:48:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042780570] [2024-06-27 22:48:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:48:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:48:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:48:08,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:08,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:08,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:08,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:08,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:10,151 INFO L124 PetriNetUnfolderBase]: 3295/4868 cut-off events. [2024-06-27 22:48:10,151 INFO L125 PetriNetUnfolderBase]: For 5861/5876 co-relation queries the response was YES. [2024-06-27 22:48:10,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14511 conditions, 4868 events. 3295/4868 cut-off events. For 5861/5876 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26032 event pairs, 967 based on Foata normal form. 14/4875 useless extension candidates. Maximal degree in co-relation 14486. Up to 4605 conditions per place. [2024-06-27 22:48:10,174 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 80 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-27 22:48:10,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 641 flow [2024-06-27 22:48:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:48:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:48:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 22:48:10,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 22:48:10,179 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 349 flow. Second operand 5 states and 127 transitions. [2024-06-27 22:48:10,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 641 flow [2024-06-27 22:48:10,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 639 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:48:10,191 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 386 flow [2024-06-27 22:48:10,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-27 22:48:10,193 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2024-06-27 22:48:10,193 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 386 flow [2024-06-27 22:48:10,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:10,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:10,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:48:10,194 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 22:48:10,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1305266932, now seen corresponding path program 1 times [2024-06-27 22:48:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634421751] [2024-06-27 22:48:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:12,765 INFO 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 22:48:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634421751] [2024-06-27 22:48:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634421751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096851694] [2024-06-27 22:48:12,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:12,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:12,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:12,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:12,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:12,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:15,104 INFO L124 PetriNetUnfolderBase]: 3723/5589 cut-off events. [2024-06-27 22:48:15,104 INFO L125 PetriNetUnfolderBase]: For 7500/7509 co-relation queries the response was YES. [2024-06-27 22:48:15,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16837 conditions, 5589 events. 3723/5589 cut-off events. For 7500/7509 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 31393 event pairs, 827 based on Foata normal form. 13/5595 useless extension candidates. Maximal degree in co-relation 16807. Up to 4856 conditions per place. [2024-06-27 22:48:15,140 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 119 selfloop transitions, 38 changer transitions 0/164 dead transitions. [2024-06-27 22:48:15,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 164 transitions, 1027 flow [2024-06-27 22:48:15,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 22:48:15,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 22:48:15,142 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 386 flow. Second operand 10 states and 248 transitions. [2024-06-27 22:48:15,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 164 transitions, 1027 flow [2024-06-27 22:48:15,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 164 transitions, 1013 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:15,153 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 603 flow [2024-06-27 22:48:15,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-27 22:48:15,156 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-06-27 22:48:15,156 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 603 flow [2024-06-27 22:48:15,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:15,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:15,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:48:15,157 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 22:48:15,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1305271582, now seen corresponding path program 2 times [2024-06-27 22:48:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:15,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912869775] [2024-06-27 22:48:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:17,745 INFO 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 22:48:17,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912869775] [2024-06-27 22:48:17,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912869775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:17,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:17,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:17,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835249083] [2024-06-27 22:48:17,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:17,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:17,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:17,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:17,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 603 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:17,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:17,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:17,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:19,467 INFO L124 PetriNetUnfolderBase]: 3754/5527 cut-off events. [2024-06-27 22:48:19,467 INFO L125 PetriNetUnfolderBase]: For 14121/14130 co-relation queries the response was YES. [2024-06-27 22:48:19,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20046 conditions, 5527 events. 3754/5527 cut-off events. For 14121/14130 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29530 event pairs, 940 based on Foata normal form. 4/5517 useless extension candidates. Maximal degree in co-relation 20010. Up to 5040 conditions per place. [2024-06-27 22:48:19,504 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 112 selfloop transitions, 33 changer transitions 0/152 dead transitions. [2024-06-27 22:48:19,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 152 transitions, 1212 flow [2024-06-27 22:48:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-06-27 22:48:19,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-27 22:48:19,506 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 603 flow. Second operand 6 states and 159 transitions. [2024-06-27 22:48:19,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 152 transitions, 1212 flow [2024-06-27 22:48:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 1178 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:19,522 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 831 flow [2024-06-27 22:48:19,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=831, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-06-27 22:48:19,523 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 22:48:19,523 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 831 flow [2024-06-27 22:48:19,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:19,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:19,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:19,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:48:19,523 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 22:48:19,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash -163179860, now seen corresponding path program 3 times [2024-06-27 22:48:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:19,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975363910] [2024-06-27 22:48:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:19,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:21,552 INFO 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 22:48:21,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:21,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975363910] [2024-06-27 22:48:21,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975363910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:21,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784230773] [2024-06-27 22:48:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:21,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:21,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:21,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:21,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 831 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:21,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:21,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:21,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:23,712 INFO L124 PetriNetUnfolderBase]: 4262/6333 cut-off events. [2024-06-27 22:48:23,712 INFO L125 PetriNetUnfolderBase]: For 20669/20678 co-relation queries the response was YES. [2024-06-27 22:48:23,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24706 conditions, 6333 events. 4262/6333 cut-off events. For 20669/20678 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 34920 event pairs, 869 based on Foata normal form. 19/6344 useless extension candidates. Maximal degree in co-relation 24664. Up to 5082 conditions per place. [2024-06-27 22:48:23,758 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 105 selfloop transitions, 65 changer transitions 0/177 dead transitions. [2024-06-27 22:48:23,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 177 transitions, 1509 flow [2024-06-27 22:48:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:48:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 22:48:23,760 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 831 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:48:23,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 177 transitions, 1509 flow [2024-06-27 22:48:23,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 177 transitions, 1489 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:23,795 INFO L231 Difference]: Finished difference. Result has 98 places, 125 transitions, 1200 flow [2024-06-27 22:48:23,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1200, PETRI_PLACES=98, PETRI_TRANSITIONS=125} [2024-06-27 22:48:23,796 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-06-27 22:48:23,796 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 125 transitions, 1200 flow [2024-06-27 22:48:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:23,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:23,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:48:23,797 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 22:48:23,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1880072840, now seen corresponding path program 1 times [2024-06-27 22:48:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:23,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485845194] [2024-06-27 22:48:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:26,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:26,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485845194] [2024-06-27 22:48:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485845194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:26,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:48:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233410949] [2024-06-27 22:48:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:26,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:48:26,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:48:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:48:26,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:26,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 125 transitions, 1200 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:26,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:26,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:27,777 INFO L124 PetriNetUnfolderBase]: 4246/6338 cut-off events. [2024-06-27 22:48:27,777 INFO L125 PetriNetUnfolderBase]: For 31910/31976 co-relation queries the response was YES. [2024-06-27 22:48:27,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28245 conditions, 6338 events. 4246/6338 cut-off events. For 31910/31976 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35462 event pairs, 958 based on Foata normal form. 52/6382 useless extension candidates. Maximal degree in co-relation 28198. Up to 5732 conditions per place. [2024-06-27 22:48:27,834 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 144 selfloop transitions, 20 changer transitions 0/171 dead transitions. [2024-06-27 22:48:27,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 1699 flow [2024-06-27 22:48:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 22:48:27,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-27 22:48:27,836 INFO L175 Difference]: Start difference. First operand has 98 places, 125 transitions, 1200 flow. Second operand 7 states and 164 transitions. [2024-06-27 22:48:27,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 1699 flow [2024-06-27 22:48:27,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 171 transitions, 1579 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:48:27,919 INFO L231 Difference]: Finished difference. Result has 97 places, 127 transitions, 1170 flow [2024-06-27 22:48:27,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1170, PETRI_PLACES=97, PETRI_TRANSITIONS=127} [2024-06-27 22:48:27,920 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 46 predicate places. [2024-06-27 22:48:27,920 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 127 transitions, 1170 flow [2024-06-27 22:48:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:27,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:27,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:48:27,921 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 22:48:27,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2113333203, now seen corresponding path program 1 times [2024-06-27 22:48:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:27,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90820398] [2024-06-27 22:48:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:30,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90820398] [2024-06-27 22:48:30,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90820398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:30,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011324708] [2024-06-27 22:48:30,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:30,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:30,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 127 transitions, 1170 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:32,654 INFO L124 PetriNetUnfolderBase]: 4232/6344 cut-off events. [2024-06-27 22:48:32,654 INFO L125 PetriNetUnfolderBase]: For 26636/26648 co-relation queries the response was YES. [2024-06-27 22:48:32,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27259 conditions, 6344 events. 4232/6344 cut-off events. For 26636/26648 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 35534 event pairs, 925 based on Foata normal form. 13/6350 useless extension candidates. Maximal degree in co-relation 27214. Up to 5567 conditions per place. [2024-06-27 22:48:32,728 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 146 selfloop transitions, 46 changer transitions 0/199 dead transitions. [2024-06-27 22:48:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 199 transitions, 1761 flow [2024-06-27 22:48:32,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-27 22:48:32,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-06-27 22:48:32,730 INFO L175 Difference]: Start difference. First operand has 97 places, 127 transitions, 1170 flow. Second operand 10 states and 244 transitions. [2024-06-27 22:48:32,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 199 transitions, 1761 flow [2024-06-27 22:48:32,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 199 transitions, 1709 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:32,769 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1222 flow [2024-06-27 22:48:32,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1222, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-06-27 22:48:32,771 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2024-06-27 22:48:32,771 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1222 flow [2024-06-27 22:48:32,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:32,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:32,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:48:32,772 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 22:48:32,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:32,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1808721003, now seen corresponding path program 2 times [2024-06-27 22:48:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:32,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423627968] [2024-06-27 22:48:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:35,097 INFO 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 22:48:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423627968] [2024-06-27 22:48:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423627968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742159792] [2024-06-27 22:48:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:35,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:35,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1222 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:35,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:35,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:36,868 INFO L124 PetriNetUnfolderBase]: 4263/6351 cut-off events. [2024-06-27 22:48:36,868 INFO L125 PetriNetUnfolderBase]: For 30938/30993 co-relation queries the response was YES. [2024-06-27 22:48:36,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27828 conditions, 6351 events. 4263/6351 cut-off events. For 30938/30993 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 35261 event pairs, 1004 based on Foata normal form. 27/6365 useless extension candidates. Maximal degree in co-relation 27783. Up to 5651 conditions per place. [2024-06-27 22:48:36,926 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 128 selfloop transitions, 40 changer transitions 0/175 dead transitions. [2024-06-27 22:48:36,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 175 transitions, 1777 flow [2024-06-27 22:48:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:48:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:48:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 22:48:36,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2024-06-27 22:48:36,928 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1222 flow. Second operand 6 states and 157 transitions. [2024-06-27 22:48:36,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 175 transitions, 1777 flow [2024-06-27 22:48:36,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 175 transitions, 1685 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:48:36,970 INFO L231 Difference]: Finished difference. Result has 99 places, 131 transitions, 1269 flow [2024-06-27 22:48:36,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1269, PETRI_PLACES=99, PETRI_TRANSITIONS=131} [2024-06-27 22:48:36,971 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-27 22:48:36,971 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 131 transitions, 1269 flow [2024-06-27 22:48:36,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:36,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:36,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:36,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:48:36,972 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 22:48:36,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:36,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2124202113, now seen corresponding path program 3 times [2024-06-27 22:48:36,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:36,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284134881] [2024-06-27 22:48:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:36,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:39,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284134881] [2024-06-27 22:48:39,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284134881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:39,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:39,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984451416] [2024-06-27 22:48:39,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:39,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:39,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 131 transitions, 1269 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:39,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:39,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:39,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:41,968 INFO L124 PetriNetUnfolderBase]: 4258/6307 cut-off events. [2024-06-27 22:48:41,968 INFO L125 PetriNetUnfolderBase]: For 31489/31498 co-relation queries the response was YES. [2024-06-27 22:48:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27832 conditions, 6307 events. 4258/6307 cut-off events. For 31489/31498 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 34490 event pairs, 1007 based on Foata normal form. 4/6295 useless extension candidates. Maximal degree in co-relation 27785. Up to 5646 conditions per place. [2024-06-27 22:48:42,007 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 134 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-06-27 22:48:42,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1828 flow [2024-06-27 22:48:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:48:42,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 22:48:42,009 INFO L175 Difference]: Start difference. First operand has 99 places, 131 transitions, 1269 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:48:42,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1828 flow [2024-06-27 22:48:42,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 1774 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:42,060 INFO L231 Difference]: Finished difference. Result has 105 places, 131 transitions, 1313 flow [2024-06-27 22:48:42,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1313, PETRI_PLACES=105, PETRI_TRANSITIONS=131} [2024-06-27 22:48:42,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-27 22:48:42,061 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 131 transitions, 1313 flow [2024-06-27 22:48:42,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:42,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:42,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:48:42,061 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 22:48:42,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash -753417239, now seen corresponding path program 4 times [2024-06-27 22:48:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400774549] [2024-06-27 22:48:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:43,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400774549] [2024-06-27 22:48:43,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400774549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:43,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:43,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646196116] [2024-06-27 22:48:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:43,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:43,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:43,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:43,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:43,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 131 transitions, 1313 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:43,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:43,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:43,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:45,947 INFO L124 PetriNetUnfolderBase]: 4226/6293 cut-off events. [2024-06-27 22:48:45,948 INFO L125 PetriNetUnfolderBase]: For 32773/32782 co-relation queries the response was YES. [2024-06-27 22:48:45,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27715 conditions, 6293 events. 4226/6293 cut-off events. For 32773/32782 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 34855 event pairs, 865 based on Foata normal form. 13/6298 useless extension candidates. Maximal degree in co-relation 27666. Up to 5056 conditions per place. [2024-06-27 22:48:45,994 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 108 selfloop transitions, 65 changer transitions 0/180 dead transitions. [2024-06-27 22:48:45,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1790 flow [2024-06-27 22:48:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:48:45,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:48:45,998 INFO L175 Difference]: Start difference. First operand has 105 places, 131 transitions, 1313 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:48:45,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1790 flow [2024-06-27 22:48:46,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 180 transitions, 1664 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:48:46,067 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 1343 flow [2024-06-27 22:48:46,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1343, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2024-06-27 22:48:46,068 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2024-06-27 22:48:46,068 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 1343 flow [2024-06-27 22:48:46,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:46,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:46,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:46,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:48:46,069 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 22:48:46,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:46,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1834606665, now seen corresponding path program 1 times [2024-06-27 22:48:46,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:46,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053962324] [2024-06-27 22:48:46,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:46,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:48,862 INFO 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 22:48:48,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:48,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053962324] [2024-06-27 22:48:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053962324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:48,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:48,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:48,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554477685] [2024-06-27 22:48:48,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:48,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:48,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:48,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:48,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:48,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:48,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 1343 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:48,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:48,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:48,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:51,785 INFO L124 PetriNetUnfolderBase]: 6031/9123 cut-off events. [2024-06-27 22:48:51,785 INFO L125 PetriNetUnfolderBase]: For 52077/52089 co-relation queries the response was YES. [2024-06-27 22:48:51,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39372 conditions, 9123 events. 6031/9123 cut-off events. For 52077/52089 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 55535 event pairs, 1127 based on Foata normal form. 24/9140 useless extension candidates. Maximal degree in co-relation 39323. Up to 5512 conditions per place. [2024-06-27 22:48:51,859 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 180 selfloop transitions, 49 changer transitions 0/236 dead transitions. [2024-06-27 22:48:51,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 236 transitions, 2208 flow [2024-06-27 22:48:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:48:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:48:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-06-27 22:48:51,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493230174081238 [2024-06-27 22:48:51,873 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 1343 flow. Second operand 11 states and 284 transitions. [2024-06-27 22:48:51,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 236 transitions, 2208 flow [2024-06-27 22:48:51,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 236 transitions, 2062 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:48:51,968 INFO L231 Difference]: Finished difference. Result has 111 places, 136 transitions, 1381 flow [2024-06-27 22:48:51,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1381, PETRI_PLACES=111, PETRI_TRANSITIONS=136} [2024-06-27 22:48:51,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2024-06-27 22:48:51,969 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 136 transitions, 1381 flow [2024-06-27 22:48:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:51,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:51,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:51,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:48:51,970 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 22:48:51,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 120309211, now seen corresponding path program 2 times [2024-06-27 22:48:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715186421] [2024-06-27 22:48:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:54,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715186421] [2024-06-27 22:48:54,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715186421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:54,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:54,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:54,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059677239] [2024-06-27 22:48:54,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:54,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:54,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:54,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:54,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 136 transitions, 1381 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:54,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:54,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:54,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:57,668 INFO L124 PetriNetUnfolderBase]: 5995/9058 cut-off events. [2024-06-27 22:48:57,668 INFO L125 PetriNetUnfolderBase]: For 54906/54918 co-relation queries the response was YES. [2024-06-27 22:48:57,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39769 conditions, 9058 events. 5995/9058 cut-off events. For 54906/54918 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 54962 event pairs, 1426 based on Foata normal form. 24/9075 useless extension candidates. Maximal degree in co-relation 39719. Up to 7913 conditions per place. [2024-06-27 22:48:57,726 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 171 selfloop transitions, 48 changer transitions 0/226 dead transitions. [2024-06-27 22:48:57,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 226 transitions, 2091 flow [2024-06-27 22:48:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:48:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:48:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-27 22:48:57,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299806576402321 [2024-06-27 22:48:57,728 INFO L175 Difference]: Start difference. First operand has 111 places, 136 transitions, 1381 flow. Second operand 11 states and 274 transitions. [2024-06-27 22:48:57,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 226 transitions, 2091 flow [2024-06-27 22:48:57,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 226 transitions, 2015 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:57,827 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 1441 flow [2024-06-27 22:48:57,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1441, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2024-06-27 22:48:57,828 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-06-27 22:48:57,828 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 1441 flow [2024-06-27 22:48:57,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:57,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:57,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:57,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:48:57,828 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 22:48:57,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 235600381, now seen corresponding path program 3 times [2024-06-27 22:48:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:57,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828031145] [2024-06-27 22:48:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:00,691 INFO 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 22:49:00,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:00,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828031145] [2024-06-27 22:49:00,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828031145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:00,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:00,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:00,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460628704] [2024-06-27 22:49:00,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:00,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:00,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:00,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:00,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:00,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:00,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 1441 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:00,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:00,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:03,055 INFO L124 PetriNetUnfolderBase]: 6045/9039 cut-off events. [2024-06-27 22:49:03,056 INFO L125 PetriNetUnfolderBase]: For 59592/59601 co-relation queries the response was YES. [2024-06-27 22:49:03,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40743 conditions, 9039 events. 6045/9039 cut-off events. For 59592/59601 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 53928 event pairs, 1585 based on Foata normal form. 6/9027 useless extension candidates. Maximal degree in co-relation 40691. Up to 8276 conditions per place. [2024-06-27 22:49:03,114 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 140 selfloop transitions, 47 changer transitions 0/194 dead transitions. [2024-06-27 22:49:03,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 194 transitions, 1997 flow [2024-06-27 22:49:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:03,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:49:03,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 22:49:03,116 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 1441 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:49:03,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 194 transitions, 1997 flow [2024-06-27 22:49:03,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 194 transitions, 1892 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:49:03,216 INFO L231 Difference]: Finished difference. Result has 114 places, 140 transitions, 1469 flow [2024-06-27 22:49:03,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1469, PETRI_PLACES=114, PETRI_TRANSITIONS=140} [2024-06-27 22:49:03,217 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 63 predicate places. [2024-06-27 22:49:03,217 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 140 transitions, 1469 flow [2024-06-27 22:49:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:03,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:03,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:49:03,218 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 22:49:03,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1885168633, now seen corresponding path program 4 times [2024-06-27 22:49:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82464729] [2024-06-27 22:49:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:05,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:05,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82464729] [2024-06-27 22:49:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82464729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:05,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:05,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:05,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696031001] [2024-06-27 22:49:05,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:05,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:05,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:05,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:05,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 140 transitions, 1469 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:05,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:05,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:05,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:08,598 INFO L124 PetriNetUnfolderBase]: 8591/12938 cut-off events. [2024-06-27 22:49:08,599 INFO L125 PetriNetUnfolderBase]: For 94835/94844 co-relation queries the response was YES. [2024-06-27 22:49:08,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57322 conditions, 12938 events. 8591/12938 cut-off events. For 94835/94844 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 82315 event pairs, 1463 based on Foata normal form. 22/12952 useless extension candidates. Maximal degree in co-relation 57269. Up to 5498 conditions per place. [2024-06-27 22:49:08,713 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 145 selfloop transitions, 77 changer transitions 0/229 dead transitions. [2024-06-27 22:49:08,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 229 transitions, 2332 flow [2024-06-27 22:49:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 22:49:08,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-27 22:49:08,715 INFO L175 Difference]: Start difference. First operand has 114 places, 140 transitions, 1469 flow. Second operand 9 states and 240 transitions. [2024-06-27 22:49:08,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 229 transitions, 2332 flow [2024-06-27 22:49:09,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 229 transitions, 2217 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:09,043 INFO L231 Difference]: Finished difference. Result has 118 places, 151 transitions, 1682 flow [2024-06-27 22:49:09,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=118, PETRI_TRANSITIONS=151} [2024-06-27 22:49:09,044 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 67 predicate places. [2024-06-27 22:49:09,044 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 151 transitions, 1682 flow [2024-06-27 22:49:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:09,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:09,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:09,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:49:09,045 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 22:49:09,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2098005003, now seen corresponding path program 5 times [2024-06-27 22:49:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314251382] [2024-06-27 22:49:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:11,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:11,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314251382] [2024-06-27 22:49:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314251382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:11,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415877744] [2024-06-27 22:49:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:11,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:11,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 151 transitions, 1682 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:14,239 INFO L124 PetriNetUnfolderBase]: 8545/12894 cut-off events. [2024-06-27 22:49:14,239 INFO L125 PetriNetUnfolderBase]: For 110344/110353 co-relation queries the response was YES. [2024-06-27 22:49:14,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60725 conditions, 12894 events. 8545/12894 cut-off events. For 110344/110353 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 82366 event pairs, 2076 based on Foata normal form. 22/12908 useless extension candidates. Maximal degree in co-relation 60670. Up to 10833 conditions per place. [2024-06-27 22:49:14,333 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 143 selfloop transitions, 71 changer transitions 0/221 dead transitions. [2024-06-27 22:49:14,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 221 transitions, 2354 flow [2024-06-27 22:49:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:14,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:49:14,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 22:49:14,335 INFO L175 Difference]: Start difference. First operand has 118 places, 151 transitions, 1682 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:49:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 221 transitions, 2354 flow [2024-06-27 22:49:14,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 221 transitions, 2228 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:14,737 INFO L231 Difference]: Finished difference. Result has 122 places, 155 transitions, 1779 flow [2024-06-27 22:49:14,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1779, PETRI_PLACES=122, PETRI_TRANSITIONS=155} [2024-06-27 22:49:14,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 71 predicate places. [2024-06-27 22:49:14,738 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 155 transitions, 1779 flow [2024-06-27 22:49:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:14,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:14,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:14,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:49:14,739 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 22:49:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -264274707, now seen corresponding path program 6 times [2024-06-27 22:49:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:14,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649219197] [2024-06-27 22:49:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:14,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:16,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:16,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649219197] [2024-06-27 22:49:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649219197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:16,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:16,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945737317] [2024-06-27 22:49:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:16,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:16,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:16,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:49:16,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 155 transitions, 1779 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:16,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:16,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:49:16,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:19,149 INFO L124 PetriNetUnfolderBase]: 7071/11999 cut-off events. [2024-06-27 22:49:19,149 INFO L125 PetriNetUnfolderBase]: For 97941/98211 co-relation queries the response was YES. [2024-06-27 22:49:19,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54236 conditions, 11999 events. 7071/11999 cut-off events. For 97941/98211 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 90709 event pairs, 411 based on Foata normal form. 217/11993 useless extension candidates. Maximal degree in co-relation 54179. Up to 3761 conditions per place. [2024-06-27 22:49:19,260 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 110 selfloop transitions, 69 changer transitions 0/221 dead transitions. [2024-06-27 22:49:19,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 221 transitions, 2485 flow [2024-06-27 22:49:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 22:49:19,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-27 22:49:19,261 INFO L175 Difference]: Start difference. First operand has 122 places, 155 transitions, 1779 flow. Second operand 8 states and 218 transitions. [2024-06-27 22:49:19,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 221 transitions, 2485 flow [2024-06-27 22:49:19,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 221 transitions, 2335 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:19,574 INFO L231 Difference]: Finished difference. Result has 125 places, 163 transitions, 1987 flow [2024-06-27 22:49:19,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1987, PETRI_PLACES=125, PETRI_TRANSITIONS=163} [2024-06-27 22:49:19,574 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 74 predicate places. [2024-06-27 22:49:19,575 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 163 transitions, 1987 flow [2024-06-27 22:49:19,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:19,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:19,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:19,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:49:19,575 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 22:49:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash -431353870, now seen corresponding path program 1 times [2024-06-27 22:49:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539660371] [2024-06-27 22:49:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:22,364 INFO 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 22:49:22,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539660371] [2024-06-27 22:49:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539660371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:22,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:22,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:22,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768957851] [2024-06-27 22:49:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:22,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:22,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:22,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 163 transitions, 1987 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:22,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:22,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:26,139 INFO L124 PetriNetUnfolderBase]: 10259/15728 cut-off events. [2024-06-27 22:49:26,140 INFO L125 PetriNetUnfolderBase]: For 149257/149269 co-relation queries the response was YES. [2024-06-27 22:49:26,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74163 conditions, 15728 events. 10259/15728 cut-off events. For 149257/149269 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 106304 event pairs, 2478 based on Foata normal form. 56/15777 useless extension candidates. Maximal degree in co-relation 74103. Up to 10968 conditions per place. [2024-06-27 22:49:26,286 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 207 selfloop transitions, 51 changer transitions 0/265 dead transitions. [2024-06-27 22:49:26,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 265 transitions, 2904 flow [2024-06-27 22:49:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 285 transitions. [2024-06-27 22:49:26,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512572533849129 [2024-06-27 22:49:26,288 INFO L175 Difference]: Start difference. First operand has 125 places, 163 transitions, 1987 flow. Second operand 11 states and 285 transitions. [2024-06-27 22:49:26,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 265 transitions, 2904 flow [2024-06-27 22:49:27,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 265 transitions, 2820 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:49:27,028 INFO L231 Difference]: Finished difference. Result has 132 places, 164 transitions, 2039 flow [2024-06-27 22:49:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2039, PETRI_PLACES=132, PETRI_TRANSITIONS=164} [2024-06-27 22:49:27,028 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2024-06-27 22:49:27,028 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 164 transitions, 2039 flow [2024-06-27 22:49:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:27,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:27,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:49:27,029 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 22:49:27,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash -652067800, now seen corresponding path program 2 times [2024-06-27 22:49:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253362411] [2024-06-27 22:49:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253362411] [2024-06-27 22:49:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253362411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:29,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997881163] [2024-06-27 22:49:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:29,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:29,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:29,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 164 transitions, 2039 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:29,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:29,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:29,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:33,779 INFO L124 PetriNetUnfolderBase]: 10144/15469 cut-off events. [2024-06-27 22:49:33,779 INFO L125 PetriNetUnfolderBase]: For 135036/135048 co-relation queries the response was YES. [2024-06-27 22:49:33,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71081 conditions, 15469 events. 10144/15469 cut-off events. For 135036/135048 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 103365 event pairs, 2849 based on Foata normal form. 66/15528 useless extension candidates. Maximal degree in co-relation 71021. Up to 13132 conditions per place. [2024-06-27 22:49:33,917 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 200 selfloop transitions, 47 changer transitions 0/254 dead transitions. [2024-06-27 22:49:33,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 254 transitions, 2790 flow [2024-06-27 22:49:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 22:49:33,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:49:33,921 INFO L175 Difference]: Start difference. First operand has 132 places, 164 transitions, 2039 flow. Second operand 11 states and 275 transitions. [2024-06-27 22:49:33,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 254 transitions, 2790 flow [2024-06-27 22:49:34,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 254 transitions, 2695 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:49:34,401 INFO L231 Difference]: Finished difference. Result has 135 places, 164 transitions, 2048 flow [2024-06-27 22:49:34,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2048, PETRI_PLACES=135, PETRI_TRANSITIONS=164} [2024-06-27 22:49:34,401 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-27 22:49:34,401 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 164 transitions, 2048 flow [2024-06-27 22:49:34,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:34,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:34,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:34,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:49:34,402 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 22:49:34,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:34,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1280810486, now seen corresponding path program 3 times [2024-06-27 22:49:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:34,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626647138] [2024-06-27 22:49:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626647138] [2024-06-27 22:49:37,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626647138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:37,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:37,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:37,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526178213] [2024-06-27 22:49:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:37,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:37,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:37,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 164 transitions, 2048 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:37,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:37,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:37,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:40,479 INFO L124 PetriNetUnfolderBase]: 10320/15685 cut-off events. [2024-06-27 22:49:40,480 INFO L125 PetriNetUnfolderBase]: For 139048/139103 co-relation queries the response was YES. [2024-06-27 22:49:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72494 conditions, 15685 events. 10320/15685 cut-off events. For 139048/139103 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 104614 event pairs, 3231 based on Foata normal form. 41/15713 useless extension candidates. Maximal degree in co-relation 72433. Up to 14495 conditions per place. [2024-06-27 22:49:40,588 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 174 selfloop transitions, 41 changer transitions 0/222 dead transitions. [2024-06-27 22:49:40,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 222 transitions, 2680 flow [2024-06-27 22:49:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:49:40,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 22:49:40,590 INFO L175 Difference]: Start difference. First operand has 135 places, 164 transitions, 2048 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:49:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 222 transitions, 2680 flow [2024-06-27 22:49:40,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 222 transitions, 2590 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:49:40,963 INFO L231 Difference]: Finished difference. Result has 134 places, 165 transitions, 2069 flow [2024-06-27 22:49:40,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2069, PETRI_PLACES=134, PETRI_TRANSITIONS=165} [2024-06-27 22:49:40,964 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 83 predicate places. [2024-06-27 22:49:40,964 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 165 transitions, 2069 flow [2024-06-27 22:49:40,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:40,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:40,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:40,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:49:40,964 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:40,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1248681354, now seen corresponding path program 4 times [2024-06-27 22:49:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272993947] [2024-06-27 22:49:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:44,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:44,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272993947] [2024-06-27 22:49:44,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272993947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:44,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:44,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:49:44,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038023085] [2024-06-27 22:49:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:44,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:49:44,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:49:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:49:44,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:44,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 165 transitions, 2069 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:44,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:44,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:44,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:47,815 INFO L124 PetriNetUnfolderBase]: 10496/15944 cut-off events. [2024-06-27 22:49:47,815 INFO L125 PetriNetUnfolderBase]: For 146700/146709 co-relation queries the response was YES. [2024-06-27 22:49:47,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74226 conditions, 15944 events. 10496/15944 cut-off events. For 146700/146709 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 106384 event pairs, 3269 based on Foata normal form. 18/15946 useless extension candidates. Maximal degree in co-relation 74164. Up to 14767 conditions per place. [2024-06-27 22:49:47,958 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 181 selfloop transitions, 46 changer transitions 0/234 dead transitions. [2024-06-27 22:49:47,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 234 transitions, 2753 flow [2024-06-27 22:49:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 22:49:47,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 22:49:47,959 INFO L175 Difference]: Start difference. First operand has 134 places, 165 transitions, 2069 flow. Second operand 9 states and 218 transitions. [2024-06-27 22:49:47,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 234 transitions, 2753 flow [2024-06-27 22:49:48,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 234 transitions, 2654 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:48,476 INFO L231 Difference]: Finished difference. Result has 137 places, 166 transitions, 2093 flow [2024-06-27 22:49:48,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2093, PETRI_PLACES=137, PETRI_TRANSITIONS=166} [2024-06-27 22:49:48,476 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-06-27 22:49:48,476 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 166 transitions, 2093 flow [2024-06-27 22:49:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:48,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:48,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:49:48,477 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 22:49:48,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1286320736, now seen corresponding path program 5 times [2024-06-27 22:49:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26875802] [2024-06-27 22:49:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:51,912 INFO 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 22:49:51,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:51,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26875802] [2024-06-27 22:49:51,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26875802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:51,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:51,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:49:51,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683311748] [2024-06-27 22:49:51,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:51,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:49:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:51,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:49:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:49:51,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 166 transitions, 2093 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:51,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:51,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:51,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:55,521 INFO L124 PetriNetUnfolderBase]: 10564/16056 cut-off events. [2024-06-27 22:49:55,521 INFO L125 PetriNetUnfolderBase]: For 150823/150832 co-relation queries the response was YES. [2024-06-27 22:49:55,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74712 conditions, 16056 events. 10564/16056 cut-off events. For 150823/150832 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 107371 event pairs, 3255 based on Foata normal form. 14/16054 useless extension candidates. Maximal degree in co-relation 74650. Up to 14659 conditions per place. [2024-06-27 22:49:55,659 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 193 selfloop transitions, 49 changer transitions 0/249 dead transitions. [2024-06-27 22:49:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 249 transitions, 2849 flow [2024-06-27 22:49:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:49:55,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:49:55,661 INFO L175 Difference]: Start difference. First operand has 137 places, 166 transitions, 2093 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:49:55,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 249 transitions, 2849 flow [2024-06-27 22:49:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 249 transitions, 2761 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:49:56,160 INFO L231 Difference]: Finished difference. Result has 141 places, 167 transitions, 2135 flow [2024-06-27 22:49:56,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2005, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2135, PETRI_PLACES=141, PETRI_TRANSITIONS=167} [2024-06-27 22:49:56,161 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-06-27 22:49:56,161 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 167 transitions, 2135 flow [2024-06-27 22:49:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:49:56,162 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 22:49:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1627088496, now seen corresponding path program 1 times [2024-06-27 22:49:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:56,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995514060] [2024-06-27 22:49:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995514060] [2024-06-27 22:49:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995514060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627463897] [2024-06-27 22:49:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:59,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:59,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 167 transitions, 2135 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:59,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:59,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:59,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:02,289 INFO L124 PetriNetUnfolderBase]: 10886/16631 cut-off events. [2024-06-27 22:50:02,289 INFO L125 PetriNetUnfolderBase]: For 167153/167216 co-relation queries the response was YES. [2024-06-27 22:50:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77542 conditions, 16631 events. 10886/16631 cut-off events. For 167153/167216 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 112313 event pairs, 3134 based on Foata normal form. 41/16659 useless extension candidates. Maximal degree in co-relation 77479. Up to 14313 conditions per place. [2024-06-27 22:50:02,429 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 179 selfloop transitions, 48 changer transitions 0/234 dead transitions. [2024-06-27 22:50:02,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 234 transitions, 2949 flow [2024-06-27 22:50:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:50:02,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:50:02,436 INFO L175 Difference]: Start difference. First operand has 141 places, 167 transitions, 2135 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:50:02,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 234 transitions, 2949 flow [2024-06-27 22:50:02,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 234 transitions, 2816 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:50:02,909 INFO L231 Difference]: Finished difference. Result has 141 places, 172 transitions, 2208 flow [2024-06-27 22:50:02,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2208, PETRI_PLACES=141, PETRI_TRANSITIONS=172} [2024-06-27 22:50:02,910 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 90 predicate places. [2024-06-27 22:50:02,910 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 172 transitions, 2208 flow [2024-06-27 22:50:02,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:02,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:02,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:02,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:50:02,910 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 22:50:02,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1034670074, now seen corresponding path program 2 times [2024-06-27 22:50:02,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:02,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916554809] [2024-06-27 22:50:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:02,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:07,069 INFO 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 22:50:07,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916554809] [2024-06-27 22:50:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916554809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761721187] [2024-06-27 22:50:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:07,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:07,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:07,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 172 transitions, 2208 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:07,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:07,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:10,335 INFO L124 PetriNetUnfolderBase]: 11168/17137 cut-off events. [2024-06-27 22:50:10,335 INFO L125 PetriNetUnfolderBase]: For 177418/177473 co-relation queries the response was YES. [2024-06-27 22:50:10,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80594 conditions, 17137 events. 11168/17137 cut-off events. For 177418/177473 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 116914 event pairs, 3206 based on Foata normal form. 37/17161 useless extension candidates. Maximal degree in co-relation 80529. Up to 14551 conditions per place. [2024-06-27 22:50:10,500 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 202 selfloop transitions, 50 changer transitions 0/259 dead transitions. [2024-06-27 22:50:10,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 259 transitions, 3235 flow [2024-06-27 22:50:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:50:10,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:50:10,502 INFO L175 Difference]: Start difference. First operand has 141 places, 172 transitions, 2208 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:50:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 259 transitions, 3235 flow [2024-06-27 22:50:11,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 259 transitions, 3109 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:11,018 INFO L231 Difference]: Finished difference. Result has 147 places, 184 transitions, 2414 flow [2024-06-27 22:50:11,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2414, PETRI_PLACES=147, PETRI_TRANSITIONS=184} [2024-06-27 22:50:11,018 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 96 predicate places. [2024-06-27 22:50:11,018 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 184 transitions, 2414 flow [2024-06-27 22:50:11,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:11,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:11,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:11,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:50:11,019 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 22:50:11,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 525081938, now seen corresponding path program 6 times [2024-06-27 22:50:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:11,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094219105] [2024-06-27 22:50:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:11,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:13,389 INFO 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 22:50:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094219105] [2024-06-27 22:50:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094219105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:13,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:13,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:13,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28765851] [2024-06-27 22:50:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:13,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:13,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 184 transitions, 2414 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:13,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:13,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:17,145 INFO L124 PetriNetUnfolderBase]: 11884/18319 cut-off events. [2024-06-27 22:50:17,145 INFO L125 PetriNetUnfolderBase]: For 192547/192556 co-relation queries the response was YES. [2024-06-27 22:50:17,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85032 conditions, 18319 events. 11884/18319 cut-off events. For 192547/192556 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 126910 event pairs, 2106 based on Foata normal form. 62/18373 useless extension candidates. Maximal degree in co-relation 84964. Up to 8315 conditions per place. [2024-06-27 22:50:17,312 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 168 selfloop transitions, 91 changer transitions 0/266 dead transitions. [2024-06-27 22:50:17,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 266 transitions, 3319 flow [2024-06-27 22:50:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:50:17,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-06-27 22:50:17,314 INFO L175 Difference]: Start difference. First operand has 147 places, 184 transitions, 2414 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:50:17,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 266 transitions, 3319 flow [2024-06-27 22:50:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 266 transitions, 3208 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:17,978 INFO L231 Difference]: Finished difference. Result has 151 places, 186 transitions, 2526 flow [2024-06-27 22:50:17,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2526, PETRI_PLACES=151, PETRI_TRANSITIONS=186} [2024-06-27 22:50:17,979 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2024-06-27 22:50:17,979 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 186 transitions, 2526 flow [2024-06-27 22:50:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:17,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:17,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:17,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:50:17,980 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 22:50:17,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash 613795568, now seen corresponding path program 7 times [2024-06-27 22:50:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:17,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024459526] [2024-06-27 22:50:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:17,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:20,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024459526] [2024-06-27 22:50:20,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024459526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:20,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:20,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:20,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581675915] [2024-06-27 22:50:20,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:20,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:20,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:20,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:20,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 186 transitions, 2526 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:20,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:20,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:20,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:23,898 INFO L124 PetriNetUnfolderBase]: 11713/17926 cut-off events. [2024-06-27 22:50:23,898 INFO L125 PetriNetUnfolderBase]: For 188245/188254 co-relation queries the response was YES. [2024-06-27 22:50:24,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83167 conditions, 17926 events. 11713/17926 cut-off events. For 188245/188254 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 122332 event pairs, 2896 based on Foata normal form. 84/18002 useless extension candidates. Maximal degree in co-relation 83098. Up to 13083 conditions per place. [2024-06-27 22:50:24,139 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 172 selfloop transitions, 76 changer transitions 0/255 dead transitions. [2024-06-27 22:50:24,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 255 transitions, 3235 flow [2024-06-27 22:50:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:50:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:50:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-27 22:50:24,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 22:50:24,141 INFO L175 Difference]: Start difference. First operand has 151 places, 186 transitions, 2526 flow. Second operand 9 states and 231 transitions. [2024-06-27 22:50:24,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 255 transitions, 3235 flow [2024-06-27 22:50:25,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 255 transitions, 3068 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:50:25,070 INFO L231 Difference]: Finished difference. Result has 153 places, 186 transitions, 2537 flow [2024-06-27 22:50:25,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2537, PETRI_PLACES=153, PETRI_TRANSITIONS=186} [2024-06-27 22:50:25,070 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-06-27 22:50:25,070 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 186 transitions, 2537 flow [2024-06-27 22:50:25,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:25,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:25,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:25,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:50:25,071 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 22:50:25,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:25,071 INFO L85 PathProgramCache]: Analyzing trace with hash 397420720, now seen corresponding path program 8 times [2024-06-27 22:50:25,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:25,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891626926] [2024-06-27 22:50:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:26,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891626926] [2024-06-27 22:50:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891626926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:26,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:50:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322647474] [2024-06-27 22:50:26,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:26,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:50:26,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:50:26,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:50:26,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:50:26,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 186 transitions, 2537 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:26,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:26,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:50:26,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:29,747 INFO L124 PetriNetUnfolderBase]: 8102/14024 cut-off events. [2024-06-27 22:50:29,747 INFO L125 PetriNetUnfolderBase]: For 129792/129989 co-relation queries the response was YES. [2024-06-27 22:50:29,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64561 conditions, 14024 events. 8102/14024 cut-off events. For 129792/129989 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 111264 event pairs, 598 based on Foata normal form. 155/13798 useless extension candidates. Maximal degree in co-relation 64492. Up to 4783 conditions per place. [2024-06-27 22:50:29,875 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 122 selfloop transitions, 78 changer transitions 0/242 dead transitions. [2024-06-27 22:50:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 242 transitions, 3070 flow [2024-06-27 22:50:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:50:29,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-06-27 22:50:29,882 INFO L175 Difference]: Start difference. First operand has 153 places, 186 transitions, 2537 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:50:29,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 242 transitions, 3070 flow [2024-06-27 22:50:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 2923 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:50:30,469 INFO L231 Difference]: Finished difference. Result has 152 places, 185 transitions, 2530 flow [2024-06-27 22:50:30,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2530, PETRI_PLACES=152, PETRI_TRANSITIONS=185} [2024-06-27 22:50:30,470 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 101 predicate places. [2024-06-27 22:50:30,470 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 185 transitions, 2530 flow [2024-06-27 22:50:30,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:30,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:30,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:30,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:50:30,471 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:30,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2127366191, now seen corresponding path program 1 times [2024-06-27 22:50:30,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:30,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455417478] [2024-06-27 22:50:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:32,707 INFO 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 22:50:32,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455417478] [2024-06-27 22:50:32,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455417478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:32,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:32,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:50:32,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131727249] [2024-06-27 22:50:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:50:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:50:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:50:32,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 185 transitions, 2530 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:32,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:32,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:35,948 INFO L124 PetriNetUnfolderBase]: 11641/18140 cut-off events. [2024-06-27 22:50:35,948 INFO L125 PetriNetUnfolderBase]: For 166395/166407 co-relation queries the response was YES. [2024-06-27 22:50:36,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83609 conditions, 18140 events. 11641/18140 cut-off events. For 166395/166407 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 127065 event pairs, 4588 based on Foata normal form. 10/18139 useless extension candidates. Maximal degree in co-relation 83540. Up to 16748 conditions per place. [2024-06-27 22:50:36,122 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 192 selfloop transitions, 38 changer transitions 0/237 dead transitions. [2024-06-27 22:50:36,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 237 transitions, 3388 flow [2024-06-27 22:50:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:50:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:50:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 22:50:36,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-06-27 22:50:36,124 INFO L175 Difference]: Start difference. First operand has 152 places, 185 transitions, 2530 flow. Second operand 6 states and 151 transitions. [2024-06-27 22:50:36,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 237 transitions, 3388 flow [2024-06-27 22:50:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 237 transitions, 3133 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 22:50:37,020 INFO L231 Difference]: Finished difference. Result has 150 places, 198 transitions, 2603 flow [2024-06-27 22:50:37,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2603, PETRI_PLACES=150, PETRI_TRANSITIONS=198} [2024-06-27 22:50:37,021 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-27 22:50:37,021 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 198 transitions, 2603 flow [2024-06-27 22:50:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:37,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:37,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:37,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:50:37,022 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:37,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1574663978, now seen corresponding path program 1 times [2024-06-27 22:50:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112940570] [2024-06-27 22:50:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:37,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:40,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:40,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112940570] [2024-06-27 22:50:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112940570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:40,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:40,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:50:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067111843] [2024-06-27 22:50:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:40,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:50:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:40,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:50:40,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:50:40,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:40,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 198 transitions, 2603 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:40,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:40,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:40,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:44,329 INFO L124 PetriNetUnfolderBase]: 11674/18244 cut-off events. [2024-06-27 22:50:44,329 INFO L125 PetriNetUnfolderBase]: For 145737/145737 co-relation queries the response was YES. [2024-06-27 22:50:44,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82609 conditions, 18244 events. 11674/18244 cut-off events. For 145737/145737 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 128372 event pairs, 4641 based on Foata normal form. 3/18244 useless extension candidates. Maximal degree in co-relation 82539. Up to 17032 conditions per place. [2024-06-27 22:50:44,471 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 243 selfloop transitions, 38 changer transitions 0/288 dead transitions. [2024-06-27 22:50:44,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 288 transitions, 3517 flow [2024-06-27 22:50:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:44,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:50:44,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:50:44,473 INFO L175 Difference]: Start difference. First operand has 150 places, 198 transitions, 2603 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:50:44,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 288 transitions, 3517 flow [2024-06-27 22:50:44,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 288 transitions, 3491 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:50:44,902 INFO L231 Difference]: Finished difference. Result has 161 places, 217 transitions, 2853 flow [2024-06-27 22:50:44,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2853, PETRI_PLACES=161, PETRI_TRANSITIONS=217} [2024-06-27 22:50:44,902 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 110 predicate places. [2024-06-27 22:50:44,902 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 217 transitions, 2853 flow [2024-06-27 22:50:44,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:44,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:44,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:44,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:50:44,905 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:44,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1523960706, now seen corresponding path program 1 times [2024-06-27 22:50:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230814014] [2024-06-27 22:50:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:47,113 INFO 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 22:50:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:47,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230814014] [2024-06-27 22:50:47,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230814014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:47,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:47,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:50:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701175652] [2024-06-27 22:50:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:50:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:50:47,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:50:47,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 217 transitions, 2853 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:50,812 INFO L124 PetriNetUnfolderBase]: 11720/18251 cut-off events. [2024-06-27 22:50:50,812 INFO L125 PetriNetUnfolderBase]: For 161949/162002 co-relation queries the response was YES. [2024-06-27 22:50:50,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86913 conditions, 18251 events. 11720/18251 cut-off events. For 161949/162002 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 128050 event pairs, 4700 based on Foata normal form. 37/18280 useless extension candidates. Maximal degree in co-relation 86838. Up to 16833 conditions per place. [2024-06-27 22:50:50,967 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 218 selfloop transitions, 35 changer transitions 0/260 dead transitions. [2024-06-27 22:50:50,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 260 transitions, 3642 flow [2024-06-27 22:50:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:50:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:50:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 22:50:50,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-06-27 22:50:50,973 INFO L175 Difference]: Start difference. First operand has 161 places, 217 transitions, 2853 flow. Second operand 6 states and 151 transitions. [2024-06-27 22:50:50,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 260 transitions, 3642 flow [2024-06-27 22:50:51,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 260 transitions, 3570 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-06-27 22:50:51,436 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 2896 flow [2024-06-27 22:50:51,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2896, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2024-06-27 22:50:51,437 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 115 predicate places. [2024-06-27 22:50:51,437 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 2896 flow [2024-06-27 22:50:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:51,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:51,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:51,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:50:51,438 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:51,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash 480004700, now seen corresponding path program 2 times [2024-06-27 22:50:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:51,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896646335] [2024-06-27 22:50:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:54,279 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 22:50:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896646335] [2024-06-27 22:50:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896646335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:54,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:54,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:50:54,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612912897] [2024-06-27 22:50:54,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:54,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:50:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:50:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:50:54,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:54,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 2896 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:54,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:54,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:54,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:58,198 INFO L124 PetriNetUnfolderBase]: 11740/18305 cut-off events. [2024-06-27 22:50:58,198 INFO L125 PetriNetUnfolderBase]: For 163628/163637 co-relation queries the response was YES. [2024-06-27 22:50:58,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87356 conditions, 18305 events. 11740/18305 cut-off events. For 163628/163637 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 128596 event pairs, 4760 based on Foata normal form. 8/18302 useless extension candidates. Maximal degree in co-relation 87277. Up to 16855 conditions per place. [2024-06-27 22:50:58,355 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 219 selfloop transitions, 44 changer transitions 0/270 dead transitions. [2024-06-27 22:50:58,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 270 transitions, 3736 flow [2024-06-27 22:50:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 22:50:58,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:50:58,358 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 2896 flow. Second operand 8 states and 184 transitions. [2024-06-27 22:50:58,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 270 transitions, 3736 flow [2024-06-27 22:50:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 270 transitions, 3680 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:50:58,859 INFO L231 Difference]: Finished difference. Result has 172 places, 223 transitions, 2975 flow [2024-06-27 22:50:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2975, PETRI_PLACES=172, PETRI_TRANSITIONS=223} [2024-06-27 22:50:58,859 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 121 predicate places. [2024-06-27 22:50:58,859 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 223 transitions, 2975 flow [2024-06-27 22:50:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:58,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:58,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:50:58,860 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1523840550, now seen corresponding path program 1 times [2024-06-27 22:50:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019018821] [2024-06-27 22:50:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:01,595 INFO 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 22:51:01,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:01,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019018821] [2024-06-27 22:51:01,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019018821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:01,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:01,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035680805] [2024-06-27 22:51:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:01,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:01,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:01,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 223 transitions, 2975 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:01,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:01,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:01,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:05,373 INFO L124 PetriNetUnfolderBase]: 11745/18751 cut-off events. [2024-06-27 22:51:05,373 INFO L125 PetriNetUnfolderBase]: For 163462/163462 co-relation queries the response was YES. [2024-06-27 22:51:05,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86930 conditions, 18751 events. 11745/18751 cut-off events. For 163462/163462 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 135882 event pairs, 5311 based on Foata normal form. 1/18747 useless extension candidates. Maximal degree in co-relation 86849. Up to 16957 conditions per place. [2024-06-27 22:51:05,545 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 249 selfloop transitions, 40 changer transitions 0/296 dead transitions. [2024-06-27 22:51:05,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 296 transitions, 4215 flow [2024-06-27 22:51:05,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-27 22:51:05,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-06-27 22:51:05,546 INFO L175 Difference]: Start difference. First operand has 172 places, 223 transitions, 2975 flow. Second operand 7 states and 174 transitions. [2024-06-27 22:51:05,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 296 transitions, 4215 flow [2024-06-27 22:51:06,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 4067 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:51:06,090 INFO L231 Difference]: Finished difference. Result has 177 places, 248 transitions, 3373 flow [2024-06-27 22:51:06,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3373, PETRI_PLACES=177, PETRI_TRANSITIONS=248} [2024-06-27 22:51:06,090 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-27 22:51:06,090 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 248 transitions, 3373 flow [2024-06-27 22:51:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:06,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:06,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:51:06,091 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:06,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1455554826, now seen corresponding path program 1 times [2024-06-27 22:51:06,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:06,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065752949] [2024-06-27 22:51:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:09,975 INFO 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 22:51:09,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:09,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065752949] [2024-06-27 22:51:09,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065752949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:09,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:09,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018176866] [2024-06-27 22:51:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:09,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:09,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:09,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:09,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 248 transitions, 3373 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:09,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:09,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:09,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:13,552 INFO L124 PetriNetUnfolderBase]: 11814/18227 cut-off events. [2024-06-27 22:51:13,552 INFO L125 PetriNetUnfolderBase]: For 173048/173054 co-relation queries the response was YES. [2024-06-27 22:51:13,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90746 conditions, 18227 events. 11814/18227 cut-off events. For 173048/173054 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 126183 event pairs, 3567 based on Foata normal form. 2/18221 useless extension candidates. Maximal degree in co-relation 90660. Up to 17129 conditions per place. [2024-06-27 22:51:13,834 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 254 selfloop transitions, 53 changer transitions 0/314 dead transitions. [2024-06-27 22:51:13,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 314 transitions, 4492 flow [2024-06-27 22:51:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 22:51:13,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-06-27 22:51:13,840 INFO L175 Difference]: Start difference. First operand has 177 places, 248 transitions, 3373 flow. Second operand 9 states and 201 transitions. [2024-06-27 22:51:13,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 314 transitions, 4492 flow [2024-06-27 22:51:14,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 314 transitions, 4430 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:14,529 INFO L231 Difference]: Finished difference. Result has 188 places, 273 transitions, 3883 flow [2024-06-27 22:51:14,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3883, PETRI_PLACES=188, PETRI_TRANSITIONS=273} [2024-06-27 22:51:14,530 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 137 predicate places. [2024-06-27 22:51:14,530 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 273 transitions, 3883 flow [2024-06-27 22:51:14,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:14,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:14,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:51:14,530 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:14,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash -704525867, now seen corresponding path program 1 times [2024-06-27 22:51:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045479925] [2024-06-27 22:51:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045479925] [2024-06-27 22:51:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045479925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508705965] [2024-06-27 22:51:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:19,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:19,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 273 transitions, 3883 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:19,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:19,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:19,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:22,842 INFO L124 PetriNetUnfolderBase]: 11855/18282 cut-off events. [2024-06-27 22:51:22,842 INFO L125 PetriNetUnfolderBase]: For 184285/184285 co-relation queries the response was YES. [2024-06-27 22:51:22,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93445 conditions, 18282 events. 11855/18282 cut-off events. For 184285/184285 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 126849 event pairs, 3346 based on Foata normal form. 3/18282 useless extension candidates. Maximal degree in co-relation 93353. Up to 17047 conditions per place. [2024-06-27 22:51:23,067 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 298 selfloop transitions, 66 changer transitions 0/371 dead transitions. [2024-06-27 22:51:23,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 371 transitions, 5077 flow [2024-06-27 22:51:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 292 transitions. [2024-06-27 22:51:23,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:51:23,069 INFO L175 Difference]: Start difference. First operand has 188 places, 273 transitions, 3883 flow. Second operand 12 states and 292 transitions. [2024-06-27 22:51:23,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 371 transitions, 5077 flow [2024-06-27 22:51:23,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 371 transitions, 4961 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:23,857 INFO L231 Difference]: Finished difference. Result has 199 places, 287 transitions, 4105 flow [2024-06-27 22:51:23,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4105, PETRI_PLACES=199, PETRI_TRANSITIONS=287} [2024-06-27 22:51:23,857 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2024-06-27 22:51:23,857 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 287 transitions, 4105 flow [2024-06-27 22:51:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:23,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:23,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:51:23,858 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:23,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1860301, now seen corresponding path program 1 times [2024-06-27 22:51:23,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:23,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341658076] [2024-06-27 22:51:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:26,802 INFO 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 22:51:26,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341658076] [2024-06-27 22:51:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341658076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:26,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076054271] [2024-06-27 22:51:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:26,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:26,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:26,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:26,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 287 transitions, 4105 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:26,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:26,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:26,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:30,884 INFO L124 PetriNetUnfolderBase]: 11912/19007 cut-off events. [2024-06-27 22:51:30,884 INFO L125 PetriNetUnfolderBase]: For 218715/218727 co-relation queries the response was YES. [2024-06-27 22:51:31,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99242 conditions, 19007 events. 11912/19007 cut-off events. For 218715/218727 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 137783 event pairs, 5005 based on Foata normal form. 9/19012 useless extension candidates. Maximal degree in co-relation 99146. Up to 17144 conditions per place. [2024-06-27 22:51:31,201 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 296 selfloop transitions, 44 changer transitions 0/347 dead transitions. [2024-06-27 22:51:31,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 347 transitions, 5325 flow [2024-06-27 22:51:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:51:31,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:51:31,202 INFO L175 Difference]: Start difference. First operand has 199 places, 287 transitions, 4105 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:51:31,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 347 transitions, 5325 flow [2024-06-27 22:51:32,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 347 transitions, 5212 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:32,235 INFO L231 Difference]: Finished difference. Result has 204 places, 296 transitions, 4241 flow [2024-06-27 22:51:32,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4241, PETRI_PLACES=204, PETRI_TRANSITIONS=296} [2024-06-27 22:51:32,236 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 22:51:32,236 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 296 transitions, 4241 flow [2024-06-27 22:51:32,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:32,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:32,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:51:32,237 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:32,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1995245743, now seen corresponding path program 2 times [2024-06-27 22:51:32,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:32,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740966901] [2024-06-27 22:51:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:32,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:35,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740966901] [2024-06-27 22:51:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740966901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:35,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:35,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759621345] [2024-06-27 22:51:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:35,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:35,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:35,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:35,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:35,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 296 transitions, 4241 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:35,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:35,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:35,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:40,466 INFO L124 PetriNetUnfolderBase]: 11935/19056 cut-off events. [2024-06-27 22:51:40,467 INFO L125 PetriNetUnfolderBase]: For 229760/229760 co-relation queries the response was YES. [2024-06-27 22:51:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101103 conditions, 19056 events. 11935/19056 cut-off events. For 229760/229760 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 138306 event pairs, 5004 based on Foata normal form. 1/19052 useless extension candidates. Maximal degree in co-relation 101001. Up to 17160 conditions per place. [2024-06-27 22:51:40,810 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 301 selfloop transitions, 51 changer transitions 0/359 dead transitions. [2024-06-27 22:51:40,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 359 transitions, 5496 flow [2024-06-27 22:51:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:51:40,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-27 22:51:40,812 INFO L175 Difference]: Start difference. First operand has 204 places, 296 transitions, 4241 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:51:40,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 359 transitions, 5496 flow [2024-06-27 22:51:41,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 359 transitions, 5386 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:41,591 INFO L231 Difference]: Finished difference. Result has 212 places, 301 transitions, 4343 flow [2024-06-27 22:51:41,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4343, PETRI_PLACES=212, PETRI_TRANSITIONS=301} [2024-06-27 22:51:41,592 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2024-06-27 22:51:41,592 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 301 transitions, 4343 flow [2024-06-27 22:51:41,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:41,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:41,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:41,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:51:41,593 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:41,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 219075474, now seen corresponding path program 1 times [2024-06-27 22:51:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:41,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047478220] [2024-06-27 22:51:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:41,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:45,256 INFO 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 22:51:45,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:45,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047478220] [2024-06-27 22:51:45,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047478220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:45,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:45,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:45,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959472137] [2024-06-27 22:51:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:45,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:45,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:45,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:45,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 301 transitions, 4343 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:45,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:45,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:45,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:49,886 INFO L124 PetriNetUnfolderBase]: 11932/19039 cut-off events. [2024-06-27 22:51:49,887 INFO L125 PetriNetUnfolderBase]: For 235591/235591 co-relation queries the response was YES. [2024-06-27 22:51:50,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101178 conditions, 19039 events. 11932/19039 cut-off events. For 235591/235591 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 138171 event pairs, 5026 based on Foata normal form. 1/19035 useless extension candidates. Maximal degree in co-relation 101073. Up to 17158 conditions per place. [2024-06-27 22:51:50,404 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 294 selfloop transitions, 50 changer transitions 0/351 dead transitions. [2024-06-27 22:51:50,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 351 transitions, 5367 flow [2024-06-27 22:51:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:51:50,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 22:51:50,406 INFO L175 Difference]: Start difference. First operand has 212 places, 301 transitions, 4343 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:51:50,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 351 transitions, 5367 flow [2024-06-27 22:51:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 351 transitions, 5211 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:51,112 INFO L231 Difference]: Finished difference. Result has 214 places, 302 transitions, 4307 flow [2024-06-27 22:51:51,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4307, PETRI_PLACES=214, PETRI_TRANSITIONS=302} [2024-06-27 22:51:51,113 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 163 predicate places. [2024-06-27 22:51:51,113 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 302 transitions, 4307 flow [2024-06-27 22:51:51,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:51,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:51,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:51:51,114 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:51,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1344887535, now seen corresponding path program 3 times [2024-06-27 22:51:51,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:51,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104552622] [2024-06-27 22:51:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:51,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104552622] [2024-06-27 22:51:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104552622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:54,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:54,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54862858] [2024-06-27 22:51:54,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:54,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:54,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:54,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:54,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:54,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 302 transitions, 4307 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:54,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:54,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:54,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:59,914 INFO L124 PetriNetUnfolderBase]: 11937/19064 cut-off events. [2024-06-27 22:51:59,914 INFO L125 PetriNetUnfolderBase]: For 236793/236793 co-relation queries the response was YES. [2024-06-27 22:52:00,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101103 conditions, 19064 events. 11937/19064 cut-off events. For 236793/236793 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 138415 event pairs, 5010 based on Foata normal form. 1/19060 useless extension candidates. Maximal degree in co-relation 100996. Up to 17162 conditions per place. [2024-06-27 22:52:00,126 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 309 selfloop transitions, 59 changer transitions 0/375 dead transitions. [2024-06-27 22:52:00,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 375 transitions, 5553 flow [2024-06-27 22:52:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:52:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:52:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-06-27 22:52:00,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835589941972921 [2024-06-27 22:52:00,130 INFO L175 Difference]: Start difference. First operand has 214 places, 302 transitions, 4307 flow. Second operand 11 states and 250 transitions. [2024-06-27 22:52:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 375 transitions, 5553 flow [2024-06-27 22:52:00,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 375 transitions, 5470 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:00,904 INFO L231 Difference]: Finished difference. Result has 222 places, 306 transitions, 4411 flow [2024-06-27 22:52:00,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4228, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4411, PETRI_PLACES=222, PETRI_TRANSITIONS=306} [2024-06-27 22:52:00,905 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 171 predicate places. [2024-06-27 22:52:00,905 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 306 transitions, 4411 flow [2024-06-27 22:52:00,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:00,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:00,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:52:00,906 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1278159619, now seen corresponding path program 1 times [2024-06-27 22:52:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198827499] [2024-06-27 22:52:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:06,672 INFO 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 22:52:06,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:06,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198827499] [2024-06-27 22:52:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198827499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:06,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:06,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781792735] [2024-06-27 22:52:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:06,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:06,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 306 transitions, 4411 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:06,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:06,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:06,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:11,946 INFO L124 PetriNetUnfolderBase]: 12222/18932 cut-off events. [2024-06-27 22:52:11,947 INFO L125 PetriNetUnfolderBase]: For 250689/250695 co-relation queries the response was YES. [2024-06-27 22:52:12,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105680 conditions, 18932 events. 12222/18932 cut-off events. For 250689/250695 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 132387 event pairs, 3527 based on Foata normal form. 2/18926 useless extension candidates. Maximal degree in co-relation 105571. Up to 17615 conditions per place. [2024-06-27 22:52:12,146 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 345 selfloop transitions, 61 changer transitions 0/413 dead transitions. [2024-06-27 22:52:12,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 413 transitions, 6219 flow [2024-06-27 22:52:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:52:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:52:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 22:52:12,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 22:52:12,149 INFO L175 Difference]: Start difference. First operand has 222 places, 306 transitions, 4411 flow. Second operand 10 states and 242 transitions. [2024-06-27 22:52:12,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 413 transitions, 6219 flow [2024-06-27 22:52:13,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 413 transitions, 6090 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:52:13,014 INFO L231 Difference]: Finished difference. Result has 226 places, 338 transitions, 5073 flow [2024-06-27 22:52:13,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5073, PETRI_PLACES=226, PETRI_TRANSITIONS=338} [2024-06-27 22:52:13,014 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 175 predicate places. [2024-06-27 22:52:13,014 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 338 transitions, 5073 flow [2024-06-27 22:52:13,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:13,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:13,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:13,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:52:13,015 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:13,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1393739089, now seen corresponding path program 2 times [2024-06-27 22:52:13,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:13,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141151360] [2024-06-27 22:52:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat