./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:34:43,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:34:43,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:34:43,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:34:43,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:34:43,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:34:43,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:34:43,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:34:43,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:34:43,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:34:43,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:34:43,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:34:43,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:34:43,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:34:43,669 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:34:43,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:34:43,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:34:43,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:34:43,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:34:43,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:34:43,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:34:43,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:34:43,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:34:43,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:34:43,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:34:43,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:34:43,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:34:43,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:34:43,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:34:43,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:34:43,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:34:43,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:34:43,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:34:43,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:34:43,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:34:43,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:34:43,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:34:43,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:34:43,678 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:34:43,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:34:43,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:34:43,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:34:43,980 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:34:43,981 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:34:43,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix027_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 23:34:44,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:34:44,092 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:34:44,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:34:45,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:34:45,479 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:34:45,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:34:45,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6802f261e/2336bbd2d6cb490991c4a7b8eb255124/FLAG224b65674 [2024-06-27 23:34:45,519 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6802f261e/2336bbd2d6cb490991c4a7b8eb255124 [2024-06-27 23:34:45,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:34:45,522 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:34:45,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:34:45,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:34:45,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:34:45,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:34:44" (1/2) ... [2024-06-27 23:34:45,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a877fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:34:45, skipping insertion in model container [2024-06-27 23:34:45,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:34:44" (1/2) ... [2024-06-27 23:34:45,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ca56ba6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:34:45, skipping insertion in model container [2024-06-27 23:34:45,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:34:45" (2/2) ... [2024-06-27 23:34:45,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a877fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:45, skipping insertion in model container [2024-06-27 23:34:45,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:34:45" (2/2) ... [2024-06-27 23:34:45,536 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:34:45,564 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:34:45,565 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:34:45,565 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:34:45,566 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:34:45,566 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd3 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:34:45,566 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:34:45,566 INFO L106 edCorrectnessWitness]: ghost_update [L855-L855] multithreaded = 1; [2024-06-27 23:34:45,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:34:45,979 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:34:45,990 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:34:46,287 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:34:46,337 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:34:46,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46 WrapperNode [2024-06-27 23:34:46,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:34:46,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:34:46,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:34:46,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:34:46,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,446 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-27 23:34:46,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:34:46,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:34:46,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:34:46,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:34:46,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,493 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:34:46,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:34:46,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:34:46,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:34:46,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:34:46,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (1/1) ... [2024-06-27 23:34:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:34:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:34:46,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:34:46,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:34:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:34:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:34:46,631 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:34:46,631 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:34:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:34:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:34:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:34:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:34:46,632 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 23:34:46,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 23:34:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:34:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:34:46,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:34:46,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:34:46,635 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:34:46,784 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:34:46,786 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:34:47,348 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:34:47,348 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:34:47,517 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:34:47,517 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:34:47,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:34:47 BoogieIcfgContainer [2024-06-27 23:34:47,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:34:47,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:34:47,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:34:47,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:34:47,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:34:44" (1/4) ... [2024-06-27 23:34:47,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608140d4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:34:47, skipping insertion in model container [2024-06-27 23:34:47,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:34:45" (2/4) ... [2024-06-27 23:34:47,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608140d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:34:47, skipping insertion in model container [2024-06-27 23:34:47,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:34:46" (3/4) ... [2024-06-27 23:34:47,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608140d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:34:47, skipping insertion in model container [2024-06-27 23:34:47,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:34:47" (4/4) ... [2024-06-27 23:34:47,529 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.opt_pso.opt_rmo.opt.i [2024-06-27 23:34:47,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:34:47,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 23:34:47,545 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:34:47,636 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:34:47,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:34:47,712 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-27 23:34:47,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:34:47,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:34:47,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-27 23:34:47,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-27 23:34:47,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:34:47,742 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;@9000387, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:34:47,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 23:34:47,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:34:47,747 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:34:47,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:34:47,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:47,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:34:47,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:47,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash 389343547, now seen corresponding path program 1 times [2024-06-27 23:34:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:47,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932969952] [2024-06-27 23:34:47,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:49,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932969952] [2024-06-27 23:34:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932969952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:49,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:49,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:34:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282308749] [2024-06-27 23:34:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:49,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:34:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:34:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:34:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-27 23:34:49,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:49,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:49,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-27 23:34:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:51,248 INFO L124 PetriNetUnfolderBase]: 8152/11675 cut-off events. [2024-06-27 23:34:51,248 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-27 23:34:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23162 conditions, 11675 events. 8152/11675 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 66021 event pairs, 6174 based on Foata normal form. 1/11317 useless extension candidates. Maximal degree in co-relation 23149. Up to 11108 conditions per place. [2024-06-27 23:34:51,335 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 42 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-27 23:34:51,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 227 flow [2024-06-27 23:34:51,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:34:51,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:34:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 23:34:51,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-27 23:34:51,348 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 99 transitions. [2024-06-27 23:34:51,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 227 flow [2024-06-27 23:34:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:34:51,353 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-27 23:34:51,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 23:34:51,358 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-27 23:34:51,358 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-27 23:34:51,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:51,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:51,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:34:51,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:51,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:51,360 INFO L85 PathProgramCache]: Analyzing trace with hash 497081622, now seen corresponding path program 1 times [2024-06-27 23:34:51,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:51,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026851598] [2024-06-27 23:34:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:51,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:52,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026851598] [2024-06-27 23:34:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026851598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:52,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:34:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458969034] [2024-06-27 23:34:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:34:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:34:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:34:52,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:34:52,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 23:34:52,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:52,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:34:52,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:54,416 INFO L124 PetriNetUnfolderBase]: 9537/13256 cut-off events. [2024-06-27 23:34:54,416 INFO L125 PetriNetUnfolderBase]: For 2493/2493 co-relation queries the response was YES. [2024-06-27 23:34:54,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30019 conditions, 13256 events. 9537/13256 cut-off events. For 2493/2493 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72098 event pairs, 6489 based on Foata normal form. 4/13254 useless extension candidates. Maximal degree in co-relation 30007. Up to 12918 conditions per place. [2024-06-27 23:34:54,497 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 23:34:54,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-27 23:34:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:34:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:34:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 23:34:54,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057692307692307 [2024-06-27 23:34:54,500 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 126 transitions. [2024-06-27 23:34:54,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-27 23:34:54,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:34:54,503 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-27 23:34:54,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 23:34:54,504 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-27 23:34:54,504 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-27 23:34:54,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 23:34:54,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:54,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:34:54,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:54,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1770337902, now seen corresponding path program 1 times [2024-06-27 23:34:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:54,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333257135] [2024-06-27 23:34:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333257135] [2024-06-27 23:34:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333257135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:55,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:55,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:34:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592862486] [2024-06-27 23:34:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:34:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:55,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:34:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:34:55,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:34:55,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:55,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:55,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:34:55,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:57,800 INFO L124 PetriNetUnfolderBase]: 9583/13365 cut-off events. [2024-06-27 23:34:57,800 INFO L125 PetriNetUnfolderBase]: For 7144/7144 co-relation queries the response was YES. [2024-06-27 23:34:57,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33653 conditions, 13365 events. 9583/13365 cut-off events. For 7144/7144 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 72865 event pairs, 4658 based on Foata normal form. 10/13370 useless extension candidates. Maximal degree in co-relation 33639. Up to 12775 conditions per place. [2024-06-27 23:34:57,870 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 74 selfloop transitions, 21 changer transitions 0/103 dead transitions. [2024-06-27 23:34:57,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 549 flow [2024-06-27 23:34:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:34:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:34:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-27 23:34:57,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461538461538462 [2024-06-27 23:34:57,877 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 168 transitions. [2024-06-27 23:34:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 549 flow [2024-06-27 23:34:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 530 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:34:57,883 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-27 23:34:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-27 23:34:57,884 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-27 23:34:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-27 23:34:57,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:57,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:57,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:57,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:34:57,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:34:57,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:57,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2089576653, now seen corresponding path program 1 times [2024-06-27 23:34:57,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:57,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043631751] [2024-06-27 23:34:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:59,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043631751] [2024-06-27 23:34:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043631751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:59,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:59,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:34:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327875269] [2024-06-27 23:34:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:59,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:34:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:34:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:34:59,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-27 23:34:59,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:59,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:59,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-27 23:34:59,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:01,145 INFO L124 PetriNetUnfolderBase]: 9770/13654 cut-off events. [2024-06-27 23:35:01,145 INFO L125 PetriNetUnfolderBase]: For 17643/17643 co-relation queries the response was YES. [2024-06-27 23:35:01,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40263 conditions, 13654 events. 9770/13654 cut-off events. For 17643/17643 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75024 event pairs, 3715 based on Foata normal form. 38/13687 useless extension candidates. Maximal degree in co-relation 40246. Up to 12776 conditions per place. [2024-06-27 23:35:01,237 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 85 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-27 23:35:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 708 flow [2024-06-27 23:35:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:01,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 23:35:01,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314102564102564 [2024-06-27 23:35:01,241 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 197 transitions. [2024-06-27 23:35:01,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 708 flow [2024-06-27 23:35:01,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 117 transitions, 696 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 23:35:01,253 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 379 flow [2024-06-27 23:35:01,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 23:35:01,255 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-27 23:35:01,255 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 379 flow [2024-06-27 23:35:01,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:01,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:01,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:01,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:35:01,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1631631860, now seen corresponding path program 1 times [2024-06-27 23:35:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105304754] [2024-06-27 23:35:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105304754] [2024-06-27 23:35:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105304754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:02,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:35:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972465369] [2024-06-27 23:35:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:02,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:35:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:35:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:35:02,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:35:02,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:02,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:02,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:35:02,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:04,373 INFO L124 PetriNetUnfolderBase]: 8357/11791 cut-off events. [2024-06-27 23:35:04,374 INFO L125 PetriNetUnfolderBase]: For 24187/24187 co-relation queries the response was YES. [2024-06-27 23:35:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37687 conditions, 11791 events. 8357/11791 cut-off events. For 24187/24187 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 66609 event pairs, 5158 based on Foata normal form. 6/11642 useless extension candidates. Maximal degree in co-relation 37666. Up to 11393 conditions per place. [2024-06-27 23:35:04,454 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-06-27 23:35:04,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 591 flow [2024-06-27 23:35:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:35:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:35:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-27 23:35:04,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115384615384615 [2024-06-27 23:35:04,458 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 379 flow. Second operand 5 states and 133 transitions. [2024-06-27 23:35:04,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 591 flow [2024-06-27 23:35:04,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 528 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:04,469 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 372 flow [2024-06-27 23:35:04,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-27 23:35:04,479 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-27 23:35:04,479 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 372 flow [2024-06-27 23:35:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:04,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:04,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:04,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:35:04,480 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:04,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash -989202695, now seen corresponding path program 1 times [2024-06-27 23:35:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245238107] [2024-06-27 23:35:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:04,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245238107] [2024-06-27 23:35:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245238107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:05,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469696991] [2024-06-27 23:35:05,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:05,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:05,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:05,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:05,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:05,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:05,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:07,847 INFO L124 PetriNetUnfolderBase]: 10040/14040 cut-off events. [2024-06-27 23:35:07,847 INFO L125 PetriNetUnfolderBase]: For 30846/30846 co-relation queries the response was YES. [2024-06-27 23:35:07,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45335 conditions, 14040 events. 10040/14040 cut-off events. For 30846/30846 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 77166 event pairs, 4565 based on Foata normal form. 12/14048 useless extension candidates. Maximal degree in co-relation 45310. Up to 13260 conditions per place. [2024-06-27 23:35:07,946 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 83 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2024-06-27 23:35:07,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 130 transitions, 906 flow [2024-06-27 23:35:07,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:35:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:35:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 23:35:07,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532967032967033 [2024-06-27 23:35:07,951 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 372 flow. Second operand 7 states and 194 transitions. [2024-06-27 23:35:07,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 130 transitions, 906 flow [2024-06-27 23:35:07,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:35:07,967 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 605 flow [2024-06-27 23:35:07,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=7, PETRI_FLOW=605, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-06-27 23:35:07,970 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-27 23:35:07,971 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 605 flow [2024-06-27 23:35:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:07,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:07,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:35:07,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 292068437, now seen corresponding path program 2 times [2024-06-27 23:35:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438017190] [2024-06-27 23:35:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:09,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:09,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438017190] [2024-06-27 23:35:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438017190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:09,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758313784] [2024-06-27 23:35:09,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:09,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:09,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:09,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 605 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:09,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:09,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:09,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:11,529 INFO L124 PetriNetUnfolderBase]: 10232/14326 cut-off events. [2024-06-27 23:35:11,529 INFO L125 PetriNetUnfolderBase]: For 39026/39028 co-relation queries the response was YES. [2024-06-27 23:35:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48870 conditions, 14326 events. 10232/14326 cut-off events. For 39026/39028 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 78519 event pairs, 4604 based on Foata normal form. 22/14336 useless extension candidates. Maximal degree in co-relation 48842. Up to 13379 conditions per place. [2024-06-27 23:35:11,625 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 76 selfloop transitions, 58 changer transitions 0/141 dead transitions. [2024-06-27 23:35:11,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 141 transitions, 1227 flow [2024-06-27 23:35:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-27 23:35:11,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352564102564102 [2024-06-27 23:35:11,627 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 605 flow. Second operand 6 states and 167 transitions. [2024-06-27 23:35:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 141 transitions, 1227 flow [2024-06-27 23:35:11,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 141 transitions, 1156 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 23:35:11,655 INFO L231 Difference]: Finished difference. Result has 80 places, 109 transitions, 918 flow [2024-06-27 23:35:11,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=918, PETRI_PLACES=80, PETRI_TRANSITIONS=109} [2024-06-27 23:35:11,657 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-27 23:35:11,657 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 109 transitions, 918 flow [2024-06-27 23:35:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:11,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:11,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:35:11,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:11,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash 335174867, now seen corresponding path program 3 times [2024-06-27 23:35:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721308478] [2024-06-27 23:35:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:13,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721308478] [2024-06-27 23:35:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721308478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:13,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:13,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266346700] [2024-06-27 23:35:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:13,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 109 transitions, 918 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:13,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:14,902 INFO L124 PetriNetUnfolderBase]: 10139/14166 cut-off events. [2024-06-27 23:35:14,902 INFO L125 PetriNetUnfolderBase]: For 47479/47481 co-relation queries the response was YES. [2024-06-27 23:35:14,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49626 conditions, 14166 events. 10139/14166 cut-off events. For 47479/47481 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 77229 event pairs, 4570 based on Foata normal form. 12/14165 useless extension candidates. Maximal degree in co-relation 49595. Up to 13266 conditions per place. [2024-06-27 23:35:14,999 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 70 selfloop transitions, 62 changer transitions 0/139 dead transitions. [2024-06-27 23:35:15,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 139 transitions, 1288 flow [2024-06-27 23:35:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 23:35:15,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-27 23:35:15,002 INFO L175 Difference]: Start difference. First operand has 80 places, 109 transitions, 918 flow. Second operand 6 states and 162 transitions. [2024-06-27 23:35:15,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 139 transitions, 1288 flow [2024-06-27 23:35:15,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 139 transitions, 1215 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 23:35:15,051 INFO L231 Difference]: Finished difference. Result has 85 places, 109 transitions, 983 flow [2024-06-27 23:35:15,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=983, PETRI_PLACES=85, PETRI_TRANSITIONS=109} [2024-06-27 23:35:15,052 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-27 23:35:15,052 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 109 transitions, 983 flow [2024-06-27 23:35:15,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:15,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:15,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:15,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:35:15,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:15,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1241534237, now seen corresponding path program 1 times [2024-06-27 23:35:15,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:15,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180058113] [2024-06-27 23:35:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:15,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:17,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:17,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180058113] [2024-06-27 23:35:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180058113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316685776] [2024-06-27 23:35:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:17,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:17,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:17,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:17,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:35:17,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 109 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:17,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:17,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:35:17,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:19,380 INFO L124 PetriNetUnfolderBase]: 8729/12332 cut-off events. [2024-06-27 23:35:19,380 INFO L125 PetriNetUnfolderBase]: For 50730/50732 co-relation queries the response was YES. [2024-06-27 23:35:19,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44544 conditions, 12332 events. 8729/12332 cut-off events. For 50730/50732 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 68706 event pairs, 5035 based on Foata normal form. 6/12146 useless extension candidates. Maximal degree in co-relation 44510. Up to 11847 conditions per place. [2024-06-27 23:35:19,454 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 120 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-06-27 23:35:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 147 transitions, 1427 flow [2024-06-27 23:35:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 23:35:19,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 23:35:19,456 INFO L175 Difference]: Start difference. First operand has 85 places, 109 transitions, 983 flow. Second operand 8 states and 196 transitions. [2024-06-27 23:35:19,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 147 transitions, 1427 flow [2024-06-27 23:35:19,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 147 transitions, 1285 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:19,566 INFO L231 Difference]: Finished difference. Result has 90 places, 116 transitions, 972 flow [2024-06-27 23:35:19,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=847, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=972, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2024-06-27 23:35:19,568 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-27 23:35:19,568 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 972 flow [2024-06-27 23:35:19,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:19,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:19,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:19,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:35:19,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:19,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1592886323, now seen corresponding path program 1 times [2024-06-27 23:35:19,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:19,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864642114] [2024-06-27 23:35:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:20,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864642114] [2024-06-27 23:35:20,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864642114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:20,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:35:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221437174] [2024-06-27 23:35:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:35:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:35:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:35:21,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:35:21,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 23:35:21,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:21,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:35:21,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:22,552 INFO L124 PetriNetUnfolderBase]: 8722/12331 cut-off events. [2024-06-27 23:35:22,552 INFO L125 PetriNetUnfolderBase]: For 59357/59359 co-relation queries the response was YES. [2024-06-27 23:35:22,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46852 conditions, 12331 events. 8722/12331 cut-off events. For 59357/59359 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 68827 event pairs, 5121 based on Foata normal form. 2/12162 useless extension candidates. Maximal degree in co-relation 46816. Up to 11889 conditions per place. [2024-06-27 23:35:22,632 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 113 selfloop transitions, 12 changer transitions 0/133 dead transitions. [2024-06-27 23:35:22,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1294 flow [2024-06-27 23:35:22,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 23:35:22,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-27 23:35:22,633 INFO L175 Difference]: Start difference. First operand has 90 places, 116 transitions, 972 flow. Second operand 6 states and 142 transitions. [2024-06-27 23:35:22,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1294 flow [2024-06-27 23:35:22,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 133 transitions, 1216 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:35:22,716 INFO L231 Difference]: Finished difference. Result has 90 places, 120 transitions, 967 flow [2024-06-27 23:35:22,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=967, PETRI_PLACES=90, PETRI_TRANSITIONS=120} [2024-06-27 23:35:22,717 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-27 23:35:22,717 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 120 transitions, 967 flow [2024-06-27 23:35:22,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 23:35:22,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:22,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:22,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:35:22,718 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:22,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2134834445, now seen corresponding path program 1 times [2024-06-27 23:35:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904890460] [2024-06-27 23:35:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904890460] [2024-06-27 23:35:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904890460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422925130] [2024-06-27 23:35:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:24,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:24,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:24,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 120 transitions, 967 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:24,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:24,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:24,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:25,987 INFO L124 PetriNetUnfolderBase]: 10120/14249 cut-off events. [2024-06-27 23:35:25,987 INFO L125 PetriNetUnfolderBase]: For 84000/84002 co-relation queries the response was YES. [2024-06-27 23:35:26,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56471 conditions, 14249 events. 10120/14249 cut-off events. For 84000/84002 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 79619 event pairs, 5995 based on Foata normal form. 3/14251 useless extension candidates. Maximal degree in co-relation 56436. Up to 13710 conditions per place. [2024-06-27 23:35:26,077 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 122 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-06-27 23:35:26,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 153 transitions, 1461 flow [2024-06-27 23:35:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 23:35:26,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 23:35:26,078 INFO L175 Difference]: Start difference. First operand has 90 places, 120 transitions, 967 flow. Second operand 6 states and 151 transitions. [2024-06-27 23:35:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 153 transitions, 1461 flow [2024-06-27 23:35:26,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 153 transitions, 1418 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:26,164 INFO L231 Difference]: Finished difference. Result has 94 places, 134 transitions, 1124 flow [2024-06-27 23:35:26,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1124, PETRI_PLACES=94, PETRI_TRANSITIONS=134} [2024-06-27 23:35:26,165 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-27 23:35:26,165 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 134 transitions, 1124 flow [2024-06-27 23:35:26,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:26,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:26,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:26,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:35:26,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:26,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 565852700, now seen corresponding path program 1 times [2024-06-27 23:35:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:26,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618047905] [2024-06-27 23:35:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:27,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618047905] [2024-06-27 23:35:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618047905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021575212] [2024-06-27 23:35:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:27,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:27,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:27,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:27,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 134 transitions, 1124 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:27,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:27,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:29,852 INFO L124 PetriNetUnfolderBase]: 11498/16104 cut-off events. [2024-06-27 23:35:29,852 INFO L125 PetriNetUnfolderBase]: For 118229/118324 co-relation queries the response was YES. [2024-06-27 23:35:29,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69024 conditions, 16104 events. 11498/16104 cut-off events. For 118229/118324 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 90282 event pairs, 4401 based on Foata normal form. 26/16011 useless extension candidates. Maximal degree in co-relation 68985. Up to 14303 conditions per place. [2024-06-27 23:35:29,964 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 124 selfloop transitions, 64 changer transitions 0/198 dead transitions. [2024-06-27 23:35:29,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 198 transitions, 1835 flow [2024-06-27 23:35:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 23:35:29,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336538461538461 [2024-06-27 23:35:29,967 INFO L175 Difference]: Start difference. First operand has 94 places, 134 transitions, 1124 flow. Second operand 8 states and 222 transitions. [2024-06-27 23:35:29,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 198 transitions, 1835 flow [2024-06-27 23:35:30,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 198 transitions, 1800 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 23:35:30,077 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1328 flow [2024-06-27 23:35:30,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1328, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-27 23:35:30,079 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-27 23:35:30,079 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1328 flow [2024-06-27 23:35:30,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:30,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:30,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:35:30,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:30,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 568248380, now seen corresponding path program 2 times [2024-06-27 23:35:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:30,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722015517] [2024-06-27 23:35:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:31,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722015517] [2024-06-27 23:35:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722015517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919409681] [2024-06-27 23:35:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:31,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:31,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:31,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:31,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1328 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:31,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:31,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:33,729 INFO L124 PetriNetUnfolderBase]: 11643/16329 cut-off events. [2024-06-27 23:35:33,729 INFO L125 PetriNetUnfolderBase]: For 139929/140037 co-relation queries the response was YES. [2024-06-27 23:35:33,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73211 conditions, 16329 events. 11643/16329 cut-off events. For 139929/140037 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 91762 event pairs, 4673 based on Foata normal form. 46/16257 useless extension candidates. Maximal degree in co-relation 73168. Up to 15054 conditions per place. [2024-06-27 23:35:33,848 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 117 selfloop transitions, 66 changer transitions 0/193 dead transitions. [2024-06-27 23:35:33,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 193 transitions, 1909 flow [2024-06-27 23:35:33,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-27 23:35:33,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2024-06-27 23:35:33,850 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1328 flow. Second operand 8 states and 217 transitions. [2024-06-27 23:35:33,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 193 transitions, 1909 flow [2024-06-27 23:35:33,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 193 transitions, 1818 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:33,988 INFO L231 Difference]: Finished difference. Result has 106 places, 144 transitions, 1430 flow [2024-06-27 23:35:33,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1430, PETRI_PLACES=106, PETRI_TRANSITIONS=144} [2024-06-27 23:35:33,989 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-27 23:35:33,989 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 144 transitions, 1430 flow [2024-06-27 23:35:33,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:33,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:33,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:35:33,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:33,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1350437598, now seen corresponding path program 3 times [2024-06-27 23:35:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:33,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94519646] [2024-06-27 23:35:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94519646] [2024-06-27 23:35:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94519646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:35,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330879085] [2024-06-27 23:35:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:35,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:35,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-27 23:35:35,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 144 transitions, 1430 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 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 23:35:35,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:35,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-27 23:35:35,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:36,908 INFO L124 PetriNetUnfolderBase]: 8076/12504 cut-off events. [2024-06-27 23:35:36,908 INFO L125 PetriNetUnfolderBase]: For 118895/119278 co-relation queries the response was YES. [2024-06-27 23:35:36,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58437 conditions, 12504 events. 8076/12504 cut-off events. For 118895/119278 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 80499 event pairs, 1872 based on Foata normal form. 136/12349 useless extension candidates. Maximal degree in co-relation 58392. Up to 9129 conditions per place. [2024-06-27 23:35:37,011 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 97 selfloop transitions, 72 changer transitions 0/201 dead transitions. [2024-06-27 23:35:37,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 201 transitions, 2185 flow [2024-06-27 23:35:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:35:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:35:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-27 23:35:37,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2024-06-27 23:35:37,013 INFO L175 Difference]: Start difference. First operand has 106 places, 144 transitions, 1430 flow. Second operand 7 states and 212 transitions. [2024-06-27 23:35:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 201 transitions, 2185 flow [2024-06-27 23:35:37,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 201 transitions, 2036 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 23:35:37,151 INFO L231 Difference]: Finished difference. Result has 109 places, 155 transitions, 1650 flow [2024-06-27 23:35:37,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1650, PETRI_PLACES=109, PETRI_TRANSITIONS=155} [2024-06-27 23:35:37,152 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-27 23:35:37,152 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 155 transitions, 1650 flow [2024-06-27 23:35:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 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 23:35:37,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:37,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:37,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:35:37,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:37,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:37,153 INFO L85 PathProgramCache]: Analyzing trace with hash -664640344, now seen corresponding path program 1 times [2024-06-27 23:35:37,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552018716] [2024-06-27 23:35:37,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:37,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:38,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:38,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552018716] [2024-06-27 23:35:38,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552018716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:38,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:38,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724950450] [2024-06-27 23:35:38,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:38,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:38,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:38,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:38,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 155 transitions, 1650 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:38,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:38,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:38,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:40,663 INFO L124 PetriNetUnfolderBase]: 12377/17359 cut-off events. [2024-06-27 23:35:40,664 INFO L125 PetriNetUnfolderBase]: For 187939/188017 co-relation queries the response was YES. [2024-06-27 23:35:40,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84091 conditions, 17359 events. 12377/17359 cut-off events. For 187939/188017 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 98923 event pairs, 6254 based on Foata normal form. 2/17177 useless extension candidates. Maximal degree in co-relation 84043. Up to 16799 conditions per place. [2024-06-27 23:35:40,811 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 156 selfloop transitions, 25 changer transitions 0/191 dead transitions. [2024-06-27 23:35:40,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 191 transitions, 2196 flow [2024-06-27 23:35:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:35:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:35:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 23:35:40,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 23:35:40,813 INFO L175 Difference]: Start difference. First operand has 109 places, 155 transitions, 1650 flow. Second operand 7 states and 175 transitions. [2024-06-27 23:35:40,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 191 transitions, 2196 flow [2024-06-27 23:35:41,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 2120 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:41,077 INFO L231 Difference]: Finished difference. Result has 113 places, 163 transitions, 1755 flow [2024-06-27 23:35:41,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1755, PETRI_PLACES=113, PETRI_TRANSITIONS=163} [2024-06-27 23:35:41,078 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 23:35:41,078 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 163 transitions, 1755 flow [2024-06-27 23:35:41,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:41,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:41,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:35:41,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:41,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash 686869560, now seen corresponding path program 4 times [2024-06-27 23:35:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995758938] [2024-06-27 23:35:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995758938] [2024-06-27 23:35:42,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995758938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:42,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:42,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:42,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338618296] [2024-06-27 23:35:42,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:42,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:42,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:42,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:42,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:42,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:42,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 163 transitions, 1755 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:42,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:42,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:42,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:45,276 INFO L124 PetriNetUnfolderBase]: 12809/18121 cut-off events. [2024-06-27 23:35:45,277 INFO L125 PetriNetUnfolderBase]: For 196321/196445 co-relation queries the response was YES. [2024-06-27 23:35:45,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88651 conditions, 18121 events. 12809/18121 cut-off events. For 196321/196445 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 104109 event pairs, 5003 based on Foata normal form. 84/18083 useless extension candidates. Maximal degree in co-relation 88602. Up to 16284 conditions per place. [2024-06-27 23:35:45,436 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 133 selfloop transitions, 72 changer transitions 0/215 dead transitions. [2024-06-27 23:35:45,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 215 transitions, 2500 flow [2024-06-27 23:35:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 23:35:45,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49278846153846156 [2024-06-27 23:35:45,439 INFO L175 Difference]: Start difference. First operand has 113 places, 163 transitions, 1755 flow. Second operand 8 states and 205 transitions. [2024-06-27 23:35:45,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 215 transitions, 2500 flow [2024-06-27 23:35:45,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 215 transitions, 2418 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:45,606 INFO L231 Difference]: Finished difference. Result has 117 places, 173 transitions, 2025 flow [2024-06-27 23:35:45,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2025, PETRI_PLACES=117, PETRI_TRANSITIONS=173} [2024-06-27 23:35:45,607 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 23:35:45,607 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 173 transitions, 2025 flow [2024-06-27 23:35:45,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:45,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:45,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:35:45,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:45,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1730415814, now seen corresponding path program 5 times [2024-06-27 23:35:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680381057] [2024-06-27 23:35:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:47,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:47,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680381057] [2024-06-27 23:35:47,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680381057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:47,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:35:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586748750] [2024-06-27 23:35:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:47,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:35:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:35:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:35:47,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:47,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 173 transitions, 2025 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:47,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:47,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:47,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:49,985 INFO L124 PetriNetUnfolderBase]: 13717/19516 cut-off events. [2024-06-27 23:35:49,985 INFO L125 PetriNetUnfolderBase]: For 231054/231178 co-relation queries the response was YES. [2024-06-27 23:35:50,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99590 conditions, 19516 events. 13717/19516 cut-off events. For 231054/231178 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 114299 event pairs, 5233 based on Foata normal form. 40/19434 useless extension candidates. Maximal degree in co-relation 99540. Up to 16060 conditions per place. [2024-06-27 23:35:50,190 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 146 selfloop transitions, 87 changer transitions 0/243 dead transitions. [2024-06-27 23:35:50,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 243 transitions, 3085 flow [2024-06-27 23:35:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:35:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:35:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 23:35:50,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-27 23:35:50,192 INFO L175 Difference]: Start difference. First operand has 117 places, 173 transitions, 2025 flow. Second operand 8 states and 210 transitions. [2024-06-27 23:35:50,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 243 transitions, 3085 flow [2024-06-27 23:35:50,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 243 transitions, 2889 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 23:35:50,543 INFO L231 Difference]: Finished difference. Result has 120 places, 193 transitions, 2406 flow [2024-06-27 23:35:50,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2406, PETRI_PLACES=120, PETRI_TRANSITIONS=193} [2024-06-27 23:35:50,543 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-27 23:35:50,543 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 193 transitions, 2406 flow [2024-06-27 23:35:50,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:50,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:50,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:50,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:35:50,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:50,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:50,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1257055510, now seen corresponding path program 2 times [2024-06-27 23:35:50,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:50,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956250107] [2024-06-27 23:35:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:50,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:51,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:51,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956250107] [2024-06-27 23:35:51,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956250107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:51,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:51,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:35:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116543847] [2024-06-27 23:35:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:35:51,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:35:51,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:35:51,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:51,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 193 transitions, 2406 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:51,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:51,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:51,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:54,732 INFO L124 PetriNetUnfolderBase]: 13937/19785 cut-off events. [2024-06-27 23:35:54,733 INFO L125 PetriNetUnfolderBase]: For 254448/254536 co-relation queries the response was YES. [2024-06-27 23:35:54,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103189 conditions, 19785 events. 13937/19785 cut-off events. For 254448/254536 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 116880 event pairs, 6899 based on Foata normal form. 2/19602 useless extension candidates. Maximal degree in co-relation 103138. Up to 19061 conditions per place. [2024-06-27 23:35:54,911 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 184 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2024-06-27 23:35:54,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 223 transitions, 2981 flow [2024-06-27 23:35:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:35:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:35:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 23:35:54,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 23:35:54,913 INFO L175 Difference]: Start difference. First operand has 120 places, 193 transitions, 2406 flow. Second operand 6 states and 151 transitions. [2024-06-27 23:35:54,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 223 transitions, 2981 flow [2024-06-27 23:35:55,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 223 transitions, 2870 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:35:55,236 INFO L231 Difference]: Finished difference. Result has 122 places, 203 transitions, 2470 flow [2024-06-27 23:35:55,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2470, PETRI_PLACES=122, PETRI_TRANSITIONS=203} [2024-06-27 23:35:55,236 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 67 predicate places. [2024-06-27 23:35:55,237 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 203 transitions, 2470 flow [2024-06-27 23:35:55,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:55,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:55,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:55,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:35:55,237 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:35:55,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash 650054948, now seen corresponding path program 1 times [2024-06-27 23:35:55,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:55,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397165988] [2024-06-27 23:35:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:55,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:57,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397165988] [2024-06-27 23:35:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397165988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:57,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:57,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:35:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474840699] [2024-06-27 23:35:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:57,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:35:57,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:57,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:35:57,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:35:57,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:35:57,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 203 transitions, 2470 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:35:57,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:57,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:35:57,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:01,375 INFO L124 PetriNetUnfolderBase]: 13885/19767 cut-off events. [2024-06-27 23:36:01,375 INFO L125 PetriNetUnfolderBase]: For 271668/271808 co-relation queries the response was YES. [2024-06-27 23:36:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106501 conditions, 19767 events. 13885/19767 cut-off events. For 271668/271808 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 116066 event pairs, 5302 based on Foata normal form. 14/19654 useless extension candidates. Maximal degree in co-relation 106448. Up to 18454 conditions per place. [2024-06-27 23:36:01,535 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 172 selfloop transitions, 81 changer transitions 0/263 dead transitions. [2024-06-27 23:36:01,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 263 transitions, 3441 flow [2024-06-27 23:36:01,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:36:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:36:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 23:36:01,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-27 23:36:01,538 INFO L175 Difference]: Start difference. First operand has 122 places, 203 transitions, 2470 flow. Second operand 9 states and 223 transitions. [2024-06-27 23:36:01,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 263 transitions, 3441 flow [2024-06-27 23:36:01,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 263 transitions, 3376 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-27 23:36:01,820 INFO L231 Difference]: Finished difference. Result has 131 places, 218 transitions, 2871 flow [2024-06-27 23:36:01,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2871, PETRI_PLACES=131, PETRI_TRANSITIONS=218} [2024-06-27 23:36:01,820 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-27 23:36:01,821 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 218 transitions, 2871 flow [2024-06-27 23:36:01,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:36:01,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:01,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:36:01,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:36:01,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1519235136, now seen corresponding path program 2 times [2024-06-27 23:36:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:01,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770984962] [2024-06-27 23:36:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770984962] [2024-06-27 23:36:04,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770984962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:04,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:04,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864434808] [2024-06-27 23:36:04,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:04,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:04,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:04,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:36:04,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 218 transitions, 2871 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:36:04,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:04,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:36:04,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:07,626 INFO L124 PetriNetUnfolderBase]: 13846/19724 cut-off events. [2024-06-27 23:36:07,627 INFO L125 PetriNetUnfolderBase]: For 300059/300201 co-relation queries the response was YES. [2024-06-27 23:36:07,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109650 conditions, 19724 events. 13846/19724 cut-off events. For 300059/300201 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 116032 event pairs, 5280 based on Foata normal form. 16/19614 useless extension candidates. Maximal degree in co-relation 109593. Up to 18401 conditions per place. [2024-06-27 23:36:07,798 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 179 selfloop transitions, 102 changer transitions 0/291 dead transitions. [2024-06-27 23:36:07,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 291 transitions, 4137 flow [2024-06-27 23:36:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:36:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:36:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 23:36:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-27 23:36:07,800 INFO L175 Difference]: Start difference. First operand has 131 places, 218 transitions, 2871 flow. Second operand 9 states and 223 transitions. [2024-06-27 23:36:07,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 291 transitions, 4137 flow [2024-06-27 23:36:08,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 291 transitions, 3844 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 23:36:08,133 INFO L231 Difference]: Finished difference. Result has 135 places, 246 transitions, 3345 flow [2024-06-27 23:36:08,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3345, PETRI_PLACES=135, PETRI_TRANSITIONS=246} [2024-06-27 23:36:08,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-27 23:36:08,133 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 246 transitions, 3345 flow [2024-06-27 23:36:08,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:36:08,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:08,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:08,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:36:08,134 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:36:08,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1527806016, now seen corresponding path program 3 times [2024-06-27 23:36:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471171287] [2024-06-27 23:36:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471171287] [2024-06-27 23:36:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471171287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:36:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268649736] [2024-06-27 23:36:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:36:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:36:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:36:10,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:36:10,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 246 transitions, 3345 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:36:10,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:10,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:36:10,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:13,750 INFO L124 PetriNetUnfolderBase]: 14237/20372 cut-off events. [2024-06-27 23:36:13,750 INFO L125 PetriNetUnfolderBase]: For 327949/328095 co-relation queries the response was YES. [2024-06-27 23:36:13,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115135 conditions, 20372 events. 14237/20372 cut-off events. For 327949/328095 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 121274 event pairs, 4799 based on Foata normal form. 16/20262 useless extension candidates. Maximal degree in co-relation 115076. Up to 18086 conditions per place. [2024-06-27 23:36:13,914 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 172 selfloop transitions, 129 changer transitions 0/311 dead transitions. [2024-06-27 23:36:13,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 311 transitions, 4423 flow [2024-06-27 23:36:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:36:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:36:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 23:36:13,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48504273504273504 [2024-06-27 23:36:13,916 INFO L175 Difference]: Start difference. First operand has 135 places, 246 transitions, 3345 flow. Second operand 9 states and 227 transitions. [2024-06-27 23:36:13,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 311 transitions, 4423 flow [2024-06-27 23:36:14,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 311 transitions, 4183 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-27 23:36:14,370 INFO L231 Difference]: Finished difference. Result has 141 places, 261 transitions, 3712 flow [2024-06-27 23:36:14,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3712, PETRI_PLACES=141, PETRI_TRANSITIONS=261} [2024-06-27 23:36:14,371 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-27 23:36:14,371 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 261 transitions, 3712 flow [2024-06-27 23:36:14,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 23:36:14,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:14,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:36:14,372 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:36:14,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1755370900, now seen corresponding path program 3 times [2024-06-27 23:36:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174255555] [2024-06-27 23:36:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174255555] [2024-06-27 23:36:15,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174255555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:15,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:15,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331441711] [2024-06-27 23:36:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:15,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:15,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:15,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-27 23:36:15,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 261 transitions, 3712 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:15,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:15,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-27 23:36:15,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:19,036 INFO L124 PetriNetUnfolderBase]: 14426/20564 cut-off events. [2024-06-27 23:36:19,036 INFO L125 PetriNetUnfolderBase]: For 367832/367972 co-relation queries the response was YES. [2024-06-27 23:36:19,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118516 conditions, 20564 events. 14426/20564 cut-off events. For 367832/367972 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 123172 event pairs, 6724 based on Foata normal form. 6/20380 useless extension candidates. Maximal degree in co-relation 118455. Up to 19757 conditions per place. [2024-06-27 23:36:19,227 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 232 selfloop transitions, 40 changer transitions 0/282 dead transitions. [2024-06-27 23:36:19,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 282 transitions, 4378 flow [2024-06-27 23:36:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 23:36:19,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 23:36:19,228 INFO L175 Difference]: Start difference. First operand has 141 places, 261 transitions, 3712 flow. Second operand 6 states and 148 transitions. [2024-06-27 23:36:19,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 282 transitions, 4378 flow [2024-06-27 23:36:19,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 282 transitions, 4081 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 23:36:19,752 INFO L231 Difference]: Finished difference. Result has 141 places, 265 transitions, 3582 flow [2024-06-27 23:36:19,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3582, PETRI_PLACES=141, PETRI_TRANSITIONS=265} [2024-06-27 23:36:19,753 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-27 23:36:19,753 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 265 transitions, 3582 flow [2024-06-27 23:36:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:19,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:19,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:19,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:36:19,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:36:19,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:19,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1761078868, now seen corresponding path program 1 times [2024-06-27 23:36:19,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:19,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641729563] [2024-06-27 23:36:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:19,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:20,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641729563] [2024-06-27 23:36:20,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641729563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:20,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:20,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:20,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122775138] [2024-06-27 23:36:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:20,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:20,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:21,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:36:21,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 265 transitions, 3582 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:21,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:21,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:36:21,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:36:24,345 INFO L124 PetriNetUnfolderBase]: 13265/19122 cut-off events. [2024-06-27 23:36:24,346 INFO L125 PetriNetUnfolderBase]: For 361949/362087 co-relation queries the response was YES. [2024-06-27 23:36:24,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112376 conditions, 19122 events. 13265/19122 cut-off events. For 361949/362087 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 116345 event pairs, 6319 based on Foata normal form. 4/18797 useless extension candidates. Maximal degree in co-relation 112314. Up to 18246 conditions per place. [2024-06-27 23:36:24,517 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 259 selfloop transitions, 20 changer transitions 0/290 dead transitions. [2024-06-27 23:36:24,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 290 transitions, 4260 flow [2024-06-27 23:36:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:36:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:36:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-27 23:36:24,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-27 23:36:24,518 INFO L175 Difference]: Start difference. First operand has 141 places, 265 transitions, 3582 flow. Second operand 6 states and 155 transitions. [2024-06-27 23:36:24,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 290 transitions, 4260 flow [2024-06-27 23:36:24,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 290 transitions, 4123 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-27 23:36:24,886 INFO L231 Difference]: Finished difference. Result has 143 places, 270 transitions, 3564 flow [2024-06-27 23:36:24,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3564, PETRI_PLACES=143, PETRI_TRANSITIONS=270} [2024-06-27 23:36:24,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-27 23:36:24,887 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 270 transitions, 3564 flow [2024-06-27 23:36:24,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:24,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:36:24,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:36:24,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:36:24,888 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 23:36:24,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:36:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1755364948, now seen corresponding path program 2 times [2024-06-27 23:36:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:36:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390077668] [2024-06-27 23:36:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:36:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:36:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:36:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:36:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:36:26,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390077668] [2024-06-27 23:36:26,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390077668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:36:26,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:36:26,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:36:26,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549431829] [2024-06-27 23:36:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:36:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:36:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:36:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:36:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:36:26,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-27 23:36:26,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 270 transitions, 3564 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:36:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:36:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-27 23:36:26,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand