./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.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/mix004.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix004.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.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-eb4cb34-m [2024-06-21 18:22:21,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:22:21,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:22:21,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:22:21,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:22:21,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:22:21,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:22:21,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:22:21,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:22:21,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:22:21,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:22:21,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:22:21,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:22:21,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:22:21,476 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:22:21,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:22:21,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:22:21,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:22:21,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:22:21,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:22:21,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:22:21,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:22:21,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:22:21,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:22:21,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:22:21,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:22:21,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:22:21,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:22:21,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:22:21,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:22:21,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:22:21,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:22:21,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:22:21,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:22:21,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:22:21,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:22:21,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:22:21,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:22:21,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:22:21,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:22:21,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:22:21,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:22:21,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:22:21,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:22:21,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:22:21,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:22:21,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:22:21,740 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:22:21,740 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:22:21,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix004.opt.yml/witness.yml [2024-06-21 18:22:21,812 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:22:21,813 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:22:21,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-21 18:22:22,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:22:23,135 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:22:23,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.opt.i [2024-06-21 18:22:23,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b8737fb2/13a14b5aeef1463ca83aabdd5449e421/FLAGd7943e19d [2024-06-21 18:22:23,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b8737fb2/13a14b5aeef1463ca83aabdd5449e421 [2024-06-21 18:22:23,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:22:23,164 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:22:23,166 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:22:23,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:22:23,170 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:22:23,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:22:21" (1/2) ... [2024-06-21 18:22:23,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380a68f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:22:23, skipping insertion in model container [2024-06-21 18:22:23,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:22:21" (1/2) ... [2024-06-21 18:22:23,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ad5a67b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:22:23, skipping insertion in model container [2024-06-21 18:22:23,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:22:23" (2/2) ... [2024-06-21 18:22:23,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380a68f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23, skipping insertion in model container [2024-06-21 18:22:23,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:22:23" (2/2) ... [2024-06-21 18:22:23,176 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:22:23,201 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:22:23,201 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:22:23,202 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:22:23,202 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:22:23,202 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd4) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$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 )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$w_buff1_used >= 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_p0_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EBX) - (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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )a >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-21 18:22:23,203 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:22:23,203 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-21 18:22:23,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:22:23,533 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:22:23,556 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 18:22:23,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:22:23,768 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:22:23,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23 WrapperNode [2024-06-21 18:22:23,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:22:23,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:22:23,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:22:23,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:22:23,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,830 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 163 [2024-06-21 18:22:23,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:22:23,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:22:23,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:22:23,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:22:23,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,844 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,876 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]. [2024-06-21 18:22:23,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:22:23,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:22:23,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:22:23,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:22:23,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (1/1) ... [2024-06-21 18:22:23,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:22:23,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:22:23,965 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) [2024-06-21 18:22:23,976 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 [2024-06-21 18:22:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:22:24,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:22:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:22:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:22:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:22:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:22:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:22:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:22:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:22:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:22:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:22:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:22:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:22:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:22:24,005 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 18:22:24,144 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:22:24,146 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:22:24,685 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:22:24,685 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:22:24,844 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:22:24,845 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:22:24,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:22:24 BoogieIcfgContainer [2024-06-21 18:22:24,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:22:24,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:22:24,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:22:24,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:22:24,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:22:21" (1/4) ... [2024-06-21 18:22:24,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616bd7b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:22:24, skipping insertion in model container [2024-06-21 18:22:24,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:22:23" (2/4) ... [2024-06-21 18:22:24,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616bd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:22:24, skipping insertion in model container [2024-06-21 18:22:24,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:22:23" (3/4) ... [2024-06-21 18:22:24,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616bd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:22:24, skipping insertion in model container [2024-06-21 18:22:24,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:22:24" (4/4) ... [2024-06-21 18:22:24,854 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.opt.i [2024-06-21 18:22:24,867 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:22:24,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:22:24,867 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:22:24,911 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:22:24,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:22:24,972 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 18:22:24,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:22:24,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 18:22:24,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:22:24,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 18:22:24,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:22:24,994 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;@29412612, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:22:24,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:22:24,998 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:22:24,998 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:22:24,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:22:24,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:22:24,999 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)] === [2024-06-21 18:22:25,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 417595377, now seen corresponding path program 1 times [2024-06-21 18:22:25,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:25,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770843928] [2024-06-21 18:22:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:26,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770843928] [2024-06-21 18:22:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770843928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:22:26,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191767178] [2024-06-21 18:22:26,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:26,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:22:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:22:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:22:26,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-21 18:22:26,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:26,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:26,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-21 18:22:26,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:27,201 INFO L124 PetriNetUnfolderBase]: 4867/7027 cut-off events. [2024-06-21 18:22:27,201 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-06-21 18:22:27,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13939 conditions, 7027 events. 4867/7027 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40787 event pairs, 3534 based on Foata normal form. 1/6810 useless extension candidates. Maximal degree in co-relation 13926. Up to 6693 conditions per place. [2024-06-21 18:22:27,245 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 40 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 18:22:27,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 225 flow [2024-06-21 18:22:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:22:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:22:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-21 18:22:27,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-21 18:22:27,257 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 106 transitions. [2024-06-21 18:22:27,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 225 flow [2024-06-21 18:22:27,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:22:27,262 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 18:22:27,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 18:22:27,266 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 18:22:27,266 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 18:22:27,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:27,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:27,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:27,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:22:27,267 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)] === [2024-06-21 18:22:27,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1877255952, now seen corresponding path program 1 times [2024-06-21 18:22:27,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:27,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138623998] [2024-06-21 18:22:27,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:27,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:28,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:28,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138623998] [2024-06-21 18:22:28,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138623998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:28,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:28,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:22:28,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539842898] [2024-06-21 18:22:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:28,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:22:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:22:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:22:28,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-06-21 18:22:28,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:28,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:28,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-06-21 18:22:28,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:29,174 INFO L124 PetriNetUnfolderBase]: 5569/7857 cut-off events. [2024-06-21 18:22:29,174 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-06-21 18:22:29,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18044 conditions, 7857 events. 5569/7857 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 44449 event pairs, 3437 based on Foata normal form. 4/7815 useless extension candidates. Maximal degree in co-relation 18032. Up to 7610 conditions per place. [2024-06-21 18:22:29,213 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 51 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 18:22:29,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 319 flow [2024-06-21 18:22:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:22:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:22:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-21 18:22:29,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-06-21 18:22:29,216 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 136 transitions. [2024-06-21 18:22:29,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 319 flow [2024-06-21 18:22:29,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:22:29,218 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 18:22:29,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 18:22:29,218 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 18:22:29,219 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 18:22:29,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:29,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:29,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:29,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:22:29,220 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)] === [2024-06-21 18:22:29,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:29,220 INFO L85 PathProgramCache]: Analyzing trace with hash 564740903, now seen corresponding path program 1 times [2024-06-21 18:22:29,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940701212] [2024-06-21 18:22:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:30,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:30,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940701212] [2024-06-21 18:22:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940701212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:30,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:30,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:22:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589228116] [2024-06-21 18:22:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:30,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:22:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:30,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:22:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:22:30,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-21 18:22:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-06-21 18:22:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-21 18:22:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:31,523 INFO L124 PetriNetUnfolderBase]: 7070/9909 cut-off events. [2024-06-21 18:22:31,523 INFO L125 PetriNetUnfolderBase]: For 6002/6002 co-relation queries the response was YES. [2024-06-21 18:22:31,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25343 conditions, 9909 events. 7070/9909 cut-off events. For 6002/6002 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 56128 event pairs, 3323 based on Foata normal form. 8/9858 useless extension candidates. Maximal degree in co-relation 25329. Up to 9556 conditions per place. [2024-06-21 18:22:31,571 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 69 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-21 18:22:31,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 484 flow [2024-06-21 18:22:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:22:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:22:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-21 18:22:31,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60062893081761 [2024-06-21 18:22:31,576 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 6 states and 191 transitions. [2024-06-21 18:22:31,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 484 flow [2024-06-21 18:22:31,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 456 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-21 18:22:31,581 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 243 flow [2024-06-21 18:22:31,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-21 18:22:31,582 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-21 18:22:31,582 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 243 flow [2024-06-21 18:22:31,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 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) [2024-06-21 18:22:31,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:31,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:31,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:22:31,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:22:31,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash -671642190, now seen corresponding path program 1 times [2024-06-21 18:22:31,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:31,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759344458] [2024-06-21 18:22:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:32,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:32,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759344458] [2024-06-21 18:22:32,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759344458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:32,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:32,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:22:32,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934858727] [2024-06-21 18:22:32,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:32,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:22:32,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:32,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:22:32,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:22:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:34,060 INFO L124 PetriNetUnfolderBase]: 7061/9971 cut-off events. [2024-06-21 18:22:34,060 INFO L125 PetriNetUnfolderBase]: For 11581/11581 co-relation queries the response was YES. [2024-06-21 18:22:34,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28103 conditions, 9971 events. 7061/9971 cut-off events. For 11581/11581 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 56733 event pairs, 3680 based on Foata normal form. 3/9952 useless extension candidates. Maximal degree in co-relation 28086. Up to 9613 conditions per place. [2024-06-21 18:22:34,120 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 58 selfloop transitions, 12 changer transitions 0/79 dead transitions. [2024-06-21 18:22:34,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 458 flow [2024-06-21 18:22:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:22:34,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:22:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-21 18:22:34,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169811320754717 [2024-06-21 18:22:34,122 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 243 flow. Second operand 5 states and 137 transitions. [2024-06-21 18:22:34,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 458 flow [2024-06-21 18:22:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 418 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:22:34,126 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 286 flow [2024-06-21 18:22:34,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-21 18:22:34,127 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-21 18:22:34,127 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 286 flow [2024-06-21 18:22:34,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:34,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:34,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:22:34,128 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)] === [2024-06-21 18:22:34,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1081318993, now seen corresponding path program 1 times [2024-06-21 18:22:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004125317] [2024-06-21 18:22:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:35,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004125317] [2024-06-21 18:22:35,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004125317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:35,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:35,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:22:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392128184] [2024-06-21 18:22:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:22:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:22:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:22:35,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:35,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:35,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:35,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:35,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:37,016 INFO L124 PetriNetUnfolderBase]: 7137/10068 cut-off events. [2024-06-21 18:22:37,016 INFO L125 PetriNetUnfolderBase]: For 17782/17808 co-relation queries the response was YES. [2024-06-21 18:22:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31092 conditions, 10068 events. 7137/10068 cut-off events. For 17782/17808 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 56990 event pairs, 3553 based on Foata normal form. 5/10041 useless extension candidates. Maximal degree in co-relation 31071. Up to 9637 conditions per place. [2024-06-21 18:22:37,062 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 71 selfloop transitions, 31 changer transitions 0/111 dead transitions. [2024-06-21 18:22:37,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 111 transitions, 727 flow [2024-06-21 18:22:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:22:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:22:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-21 18:22:37,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-21 18:22:37,064 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 286 flow. Second operand 6 states and 174 transitions. [2024-06-21 18:22:37,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 111 transitions, 727 flow [2024-06-21 18:22:37,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 704 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 18:22:37,068 INFO L231 Difference]: Finished difference. Result has 71 places, 81 transitions, 477 flow [2024-06-21 18:22:37,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=71, PETRI_TRANSITIONS=81} [2024-06-21 18:22:37,069 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-06-21 18:22:37,069 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 81 transitions, 477 flow [2024-06-21 18:22:37,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:37,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:37,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:22:37,070 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)] === [2024-06-21 18:22:37,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:37,070 INFO L85 PathProgramCache]: Analyzing trace with hash -400695417, now seen corresponding path program 2 times [2024-06-21 18:22:37,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:37,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571344915] [2024-06-21 18:22:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:37,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:38,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:38,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571344915] [2024-06-21 18:22:38,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571344915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:38,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:38,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:22:38,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846665745] [2024-06-21 18:22:38,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:38,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:22:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:38,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:22:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:22:38,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:38,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 81 transitions, 477 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:38,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:38,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:38,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:39,809 INFO L124 PetriNetUnfolderBase]: 7128/10082 cut-off events. [2024-06-21 18:22:39,809 INFO L125 PetriNetUnfolderBase]: For 25992/26054 co-relation queries the response was YES. [2024-06-21 18:22:39,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33909 conditions, 10082 events. 7128/10082 cut-off events. For 25992/26054 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57313 event pairs, 3547 based on Foata normal form. 39/10093 useless extension candidates. Maximal degree in co-relation 33883. Up to 9628 conditions per place. [2024-06-21 18:22:39,906 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 66 selfloop transitions, 32 changer transitions 0/107 dead transitions. [2024-06-21 18:22:39,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 769 flow [2024-06-21 18:22:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:22:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:22:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-21 18:22:39,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314465408805031 [2024-06-21 18:22:39,908 INFO L175 Difference]: Start difference. First operand has 71 places, 81 transitions, 477 flow. Second operand 6 states and 169 transitions. [2024-06-21 18:22:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 769 flow [2024-06-21 18:22:39,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 741 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-06-21 18:22:39,920 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 526 flow [2024-06-21 18:22:39,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=526, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2024-06-21 18:22:39,921 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-21 18:22:39,921 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 526 flow [2024-06-21 18:22:39,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:39,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:39,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:22:39,922 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)] === [2024-06-21 18:22:39,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 265572433, now seen corresponding path program 3 times [2024-06-21 18:22:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955484286] [2024-06-21 18:22:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:40,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:40,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955484286] [2024-06-21 18:22:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955484286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:22:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439245097] [2024-06-21 18:22:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:40,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:22:40,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:40,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:22:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:22:40,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:40,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:40,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:40,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:40,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:42,289 INFO L124 PetriNetUnfolderBase]: 7191/10170 cut-off events. [2024-06-21 18:22:42,290 INFO L125 PetriNetUnfolderBase]: For 30107/30133 co-relation queries the response was YES. [2024-06-21 18:22:42,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34831 conditions, 10170 events. 7191/10170 cut-off events. For 30107/30133 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57825 event pairs, 3545 based on Foata normal form. 7/10153 useless extension candidates. Maximal degree in co-relation 34800. Up to 9689 conditions per place. [2024-06-21 18:22:42,354 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 72 selfloop transitions, 49 changer transitions 0/130 dead transitions. [2024-06-21 18:22:42,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 1011 flow [2024-06-21 18:22:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:22:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:22:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-21 18:22:42,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256064690026954 [2024-06-21 18:22:42,356 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 526 flow. Second operand 7 states and 195 transitions. [2024-06-21 18:22:42,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 1011 flow [2024-06-21 18:22:42,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 908 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-21 18:22:42,374 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 739 flow [2024-06-21 18:22:42,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2024-06-21 18:22:42,375 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2024-06-21 18:22:42,375 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 739 flow [2024-06-21 18:22:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:22:42,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:42,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:42,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:22:42,376 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)] === [2024-06-21 18:22:42,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1355103285, now seen corresponding path program 1 times [2024-06-21 18:22:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:42,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426330316] [2024-06-21 18:22:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:42,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426330316] [2024-06-21 18:22:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426330316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312031804] [2024-06-21 18:22:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:43,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:43,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 739 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:45,543 INFO L124 PetriNetUnfolderBase]: 7236/10197 cut-off events. [2024-06-21 18:22:45,544 INFO L125 PetriNetUnfolderBase]: For 36516/36556 co-relation queries the response was YES. [2024-06-21 18:22:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36032 conditions, 10197 events. 7236/10197 cut-off events. For 36516/36556 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 57487 event pairs, 3514 based on Foata normal form. 3/10182 useless extension candidates. Maximal degree in co-relation 35998. Up to 9773 conditions per place. [2024-06-21 18:22:45,600 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 100 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-21 18:22:45,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 142 transitions, 1177 flow [2024-06-21 18:22:45,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:22:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:22:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-21 18:22:45,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49528301886792453 [2024-06-21 18:22:45,604 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 739 flow. Second operand 8 states and 210 transitions. [2024-06-21 18:22:45,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 142 transitions, 1177 flow [2024-06-21 18:22:45,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 1106 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-21 18:22:45,623 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 822 flow [2024-06-21 18:22:45,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=822, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-21 18:22:45,624 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-21 18:22:45,624 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 822 flow [2024-06-21 18:22:45,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:45,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:45,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:45,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:22:45,625 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)] === [2024-06-21 18:22:45,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1184405505, now seen corresponding path program 2 times [2024-06-21 18:22:45,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719960937] [2024-06-21 18:22:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719960937] [2024-06-21 18:22:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719960937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:46,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611447398] [2024-06-21 18:22:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:46,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:47,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:47,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 822 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:47,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:47,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:47,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:48,851 INFO L124 PetriNetUnfolderBase]: 7289/10249 cut-off events. [2024-06-21 18:22:48,852 INFO L125 PetriNetUnfolderBase]: For 47888/47940 co-relation queries the response was YES. [2024-06-21 18:22:48,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38981 conditions, 10249 events. 7289/10249 cut-off events. For 47888/47940 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57438 event pairs, 3461 based on Foata normal form. 39/10257 useless extension candidates. Maximal degree in co-relation 38945. Up to 9687 conditions per place. [2024-06-21 18:22:48,930 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 86 selfloop transitions, 65 changer transitions 0/160 dead transitions. [2024-06-21 18:22:48,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 160 transitions, 1468 flow [2024-06-21 18:22:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:22:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:22:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-21 18:22:48,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498652291105122 [2024-06-21 18:22:48,932 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 822 flow. Second operand 7 states and 204 transitions. [2024-06-21 18:22:48,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 160 transitions, 1468 flow [2024-06-21 18:22:48,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 160 transitions, 1393 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-21 18:22:48,961 INFO L231 Difference]: Finished difference. Result has 93 places, 121 transitions, 1026 flow [2024-06-21 18:22:48,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1026, PETRI_PLACES=93, PETRI_TRANSITIONS=121} [2024-06-21 18:22:48,962 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2024-06-21 18:22:48,962 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 121 transitions, 1026 flow [2024-06-21 18:22:48,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:48,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:48,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:48,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:22:48,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:22:48,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash 463345419, now seen corresponding path program 3 times [2024-06-21 18:22:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:48,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802349224] [2024-06-21 18:22:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802349224] [2024-06-21 18:22:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802349224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:50,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360282455] [2024-06-21 18:22:50,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:50,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:50,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:50,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:50,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:50,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 121 transitions, 1026 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:50,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:50,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:50,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:52,040 INFO L124 PetriNetUnfolderBase]: 7280/10271 cut-off events. [2024-06-21 18:22:52,041 INFO L125 PetriNetUnfolderBase]: For 62551/62619 co-relation queries the response was YES. [2024-06-21 18:22:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41631 conditions, 10271 events. 7280/10271 cut-off events. For 62551/62619 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 57895 event pairs, 3454 based on Foata normal form. 35/10279 useless extension candidates. Maximal degree in co-relation 41593. Up to 9678 conditions per place. [2024-06-21 18:22:52,112 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 82 selfloop transitions, 66 changer transitions 0/157 dead transitions. [2024-06-21 18:22:52,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 157 transitions, 1496 flow [2024-06-21 18:22:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:22:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:22:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-21 18:22:52,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5336927223719676 [2024-06-21 18:22:52,114 INFO L175 Difference]: Start difference. First operand has 93 places, 121 transitions, 1026 flow. Second operand 7 states and 198 transitions. [2024-06-21 18:22:52,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 157 transitions, 1496 flow [2024-06-21 18:22:52,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 157 transitions, 1451 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-21 18:22:52,147 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1127 flow [2024-06-21 18:22:52,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1127, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-21 18:22:52,148 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 43 predicate places. [2024-06-21 18:22:52,148 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1127 flow [2024-06-21 18:22:52,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:52,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:52,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:52,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:22:52,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:22:52,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:52,149 INFO L85 PathProgramCache]: Analyzing trace with hash -174976195, now seen corresponding path program 4 times [2024-06-21 18:22:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063843602] [2024-06-21 18:22:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:52,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:53,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063843602] [2024-06-21 18:22:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063843602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:53,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:53,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122736303] [2024-06-21 18:22:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:53,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:53,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:53,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:53,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:53,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1127 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:53,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:53,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:53,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:54,780 INFO L124 PetriNetUnfolderBase]: 7435/10533 cut-off events. [2024-06-21 18:22:54,780 INFO L125 PetriNetUnfolderBase]: For 72430/72524 co-relation queries the response was YES. [2024-06-21 18:22:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43969 conditions, 10533 events. 7435/10533 cut-off events. For 72430/72524 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59621 event pairs, 3438 based on Foata normal form. 25/10543 useless extension candidates. Maximal degree in co-relation 43927. Up to 9973 conditions per place. [2024-06-21 18:22:54,854 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 135 selfloop transitions, 66 changer transitions 0/210 dead transitions. [2024-06-21 18:22:54,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 210 transitions, 2135 flow [2024-06-21 18:22:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:22:54,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:22:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-06-21 18:22:54,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207547169811321 [2024-06-21 18:22:54,856 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1127 flow. Second operand 10 states and 276 transitions. [2024-06-21 18:22:54,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 210 transitions, 2135 flow [2024-06-21 18:22:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 210 transitions, 1985 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 18:22:54,912 INFO L231 Difference]: Finished difference. Result has 106 places, 153 transitions, 1499 flow [2024-06-21 18:22:54,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1499, PETRI_PLACES=106, PETRI_TRANSITIONS=153} [2024-06-21 18:22:54,913 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 50 predicate places. [2024-06-21 18:22:54,913 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 153 transitions, 1499 flow [2024-06-21 18:22:54,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:54,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:54,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:54,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:22:54,914 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)] === [2024-06-21 18:22:54,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:54,914 INFO L85 PathProgramCache]: Analyzing trace with hash -696193667, now seen corresponding path program 5 times [2024-06-21 18:22:54,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:54,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987429007] [2024-06-21 18:22:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987429007] [2024-06-21 18:22:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987429007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853742621] [2024-06-21 18:22:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:56,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:56,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 153 transitions, 1499 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:56,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:56,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:56,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:22:57,825 INFO L124 PetriNetUnfolderBase]: 7521/10687 cut-off events. [2024-06-21 18:22:57,826 INFO L125 PetriNetUnfolderBase]: For 82427/82519 co-relation queries the response was YES. [2024-06-21 18:22:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45744 conditions, 10687 events. 7521/10687 cut-off events. For 82427/82519 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60709 event pairs, 3438 based on Foata normal form. 11/10686 useless extension candidates. Maximal degree in co-relation 45699. Up to 10097 conditions per place. [2024-06-21 18:22:57,904 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 138 selfloop transitions, 77 changer transitions 0/224 dead transitions. [2024-06-21 18:22:57,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 224 transitions, 2415 flow [2024-06-21 18:22:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:22:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:22:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-21 18:22:57,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-21 18:22:57,906 INFO L175 Difference]: Start difference. First operand has 106 places, 153 transitions, 1499 flow. Second operand 8 states and 221 transitions. [2024-06-21 18:22:57,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 224 transitions, 2415 flow [2024-06-21 18:22:57,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 224 transitions, 2233 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-21 18:22:57,982 INFO L231 Difference]: Finished difference. Result has 110 places, 185 transitions, 1899 flow [2024-06-21 18:22:57,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1899, PETRI_PLACES=110, PETRI_TRANSITIONS=185} [2024-06-21 18:22:57,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-21 18:22:57,983 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 185 transitions, 1899 flow [2024-06-21 18:22:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:57,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:22:57,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:22:57,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:22:57,984 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)] === [2024-06-21 18:22:57,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:22:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -696073697, now seen corresponding path program 6 times [2024-06-21 18:22:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:22:57,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607273845] [2024-06-21 18:22:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:22:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:22:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:22:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:22:59,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:22:59,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607273845] [2024-06-21 18:22:59,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607273845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:22:59,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:22:59,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:22:59,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093116767] [2024-06-21 18:22:59,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:22:59,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:22:59,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:22:59,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:22:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:22:59,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:22:59,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 185 transitions, 1899 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:22:59,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:22:59,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:22:59,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:00,958 INFO L124 PetriNetUnfolderBase]: 7566/10740 cut-off events. [2024-06-21 18:23:00,958 INFO L125 PetriNetUnfolderBase]: For 91611/91721 co-relation queries the response was YES. [2024-06-21 18:23:00,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47083 conditions, 10740 events. 7566/10740 cut-off events. For 91611/91721 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 60900 event pairs, 3455 based on Foata normal form. 63/10787 useless extension candidates. Maximal degree in co-relation 47036. Up to 9952 conditions per place. [2024-06-21 18:23:01,034 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 88 selfloop transitions, 142 changer transitions 0/239 dead transitions. [2024-06-21 18:23:01,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 2645 flow [2024-06-21 18:23:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:23:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:23:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-21 18:23:01,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-06-21 18:23:01,036 INFO L175 Difference]: Start difference. First operand has 110 places, 185 transitions, 1899 flow. Second operand 8 states and 224 transitions. [2024-06-21 18:23:01,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 2645 flow [2024-06-21 18:23:01,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 239 transitions, 2507 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-21 18:23:01,115 INFO L231 Difference]: Finished difference. Result has 116 places, 201 transitions, 2244 flow [2024-06-21 18:23:01,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=116, PETRI_TRANSITIONS=201} [2024-06-21 18:23:01,116 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2024-06-21 18:23:01,116 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 201 transitions, 2244 flow [2024-06-21 18:23:01,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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) [2024-06-21 18:23:01,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:01,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:23:01,116 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)] === [2024-06-21 18:23:01,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash 471635253, now seen corresponding path program 1 times [2024-06-21 18:23:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:01,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866203797] [2024-06-21 18:23:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866203797] [2024-06-21 18:23:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866203797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:02,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:02,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:23:02,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651446209] [2024-06-21 18:23:02,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:02,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:23:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:23:02,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:23:02,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:02,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 201 transitions, 2244 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) [2024-06-21 18:23:02,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:02,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:02,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:04,603 INFO L124 PetriNetUnfolderBase]: 9832/13902 cut-off events. [2024-06-21 18:23:04,603 INFO L125 PetriNetUnfolderBase]: For 130330/130330 co-relation queries the response was YES. [2024-06-21 18:23:04,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60766 conditions, 13902 events. 9832/13902 cut-off events. For 130330/130330 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 78175 event pairs, 4470 based on Foata normal form. 6/13891 useless extension candidates. Maximal degree in co-relation 60717. Up to 13273 conditions per place. [2024-06-21 18:23:04,716 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 212 selfloop transitions, 19 changer transitions 0/239 dead transitions. [2024-06-21 18:23:04,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 239 transitions, 2933 flow [2024-06-21 18:23:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:23:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:23:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-21 18:23:04,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46462264150943394 [2024-06-21 18:23:04,732 INFO L175 Difference]: Start difference. First operand has 116 places, 201 transitions, 2244 flow. Second operand 8 states and 197 transitions. [2024-06-21 18:23:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 239 transitions, 2933 flow [2024-06-21 18:23:04,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 239 transitions, 2577 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-21 18:23:04,856 INFO L231 Difference]: Finished difference. Result has 119 places, 208 transitions, 2048 flow [2024-06-21 18:23:04,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2048, PETRI_PLACES=119, PETRI_TRANSITIONS=208} [2024-06-21 18:23:04,858 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-21 18:23:04,858 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 208 transitions, 2048 flow [2024-06-21 18:23:04,858 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) [2024-06-21 18:23:04,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:04,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:04,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:23:04,859 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)] === [2024-06-21 18:23:04,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 325714881, now seen corresponding path program 1 times [2024-06-21 18:23:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171603975] [2024-06-21 18:23:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:05,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171603975] [2024-06-21 18:23:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171603975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:05,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:05,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:23:05,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992010099] [2024-06-21 18:23:05,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:05,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:23:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:23:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:23:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 208 transitions, 2048 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:07,637 INFO L124 PetriNetUnfolderBase]: 9661/13852 cut-off events. [2024-06-21 18:23:07,637 INFO L125 PetriNetUnfolderBase]: For 146466/146474 co-relation queries the response was YES. [2024-06-21 18:23:07,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62506 conditions, 13852 events. 9661/13852 cut-off events. For 146466/146474 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 80094 event pairs, 4792 based on Foata normal form. 10/13687 useless extension candidates. Maximal degree in co-relation 62457. Up to 13147 conditions per place. [2024-06-21 18:23:07,758 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 194 selfloop transitions, 12 changer transitions 0/225 dead transitions. [2024-06-21 18:23:07,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 225 transitions, 2548 flow [2024-06-21 18:23:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:23:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:23:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 18:23:07,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2024-06-21 18:23:07,759 INFO L175 Difference]: Start difference. First operand has 119 places, 208 transitions, 2048 flow. Second operand 5 states and 133 transitions. [2024-06-21 18:23:07,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 225 transitions, 2548 flow [2024-06-21 18:23:07,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 225 transitions, 2470 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 18:23:07,925 INFO L231 Difference]: Finished difference. Result has 118 places, 212 transitions, 2049 flow [2024-06-21 18:23:07,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2049, PETRI_PLACES=118, PETRI_TRANSITIONS=212} [2024-06-21 18:23:07,925 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-06-21 18:23:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 212 transitions, 2049 flow [2024-06-21 18:23:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:07,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:23:07,926 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:07,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1507228129, now seen corresponding path program 1 times [2024-06-21 18:23:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525123072] [2024-06-21 18:23:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525123072] [2024-06-21 18:23:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525123072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:23:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416904068] [2024-06-21 18:23:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:23:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:23:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:23:09,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:09,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 212 transitions, 2049 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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) [2024-06-21 18:23:09,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:09,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:09,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:11,060 INFO L124 PetriNetUnfolderBase]: 9684/14067 cut-off events. [2024-06-21 18:23:11,060 INFO L125 PetriNetUnfolderBase]: For 163920/163928 co-relation queries the response was YES. [2024-06-21 18:23:11,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65683 conditions, 14067 events. 9684/14067 cut-off events. For 163920/163928 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 82798 event pairs, 4756 based on Foata normal form. 12/14026 useless extension candidates. Maximal degree in co-relation 65634. Up to 13111 conditions per place. [2024-06-21 18:23:11,199 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 199 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2024-06-21 18:23:11,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 234 transitions, 2591 flow [2024-06-21 18:23:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:23:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:23:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-21 18:23:11,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-21 18:23:11,201 INFO L175 Difference]: Start difference. First operand has 118 places, 212 transitions, 2049 flow. Second operand 6 states and 157 transitions. [2024-06-21 18:23:11,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 234 transitions, 2591 flow [2024-06-21 18:23:11,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 234 transitions, 2560 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 18:23:11,365 INFO L231 Difference]: Finished difference. Result has 121 places, 216 transitions, 2111 flow [2024-06-21 18:23:11,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2111, PETRI_PLACES=121, PETRI_TRANSITIONS=216} [2024-06-21 18:23:11,366 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 65 predicate places. [2024-06-21 18:23:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 216 transitions, 2111 flow [2024-06-21 18:23:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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) [2024-06-21 18:23:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:11,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:23:11,367 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)] === [2024-06-21 18:23:11,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash -67886626, now seen corresponding path program 1 times [2024-06-21 18:23:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520935580] [2024-06-21 18:23:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520935580] [2024-06-21 18:23:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520935580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:13,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872800244] [2024-06-21 18:23:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:13,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:13,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 216 transitions, 2111 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:13,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:13,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:13,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:15,686 INFO L124 PetriNetUnfolderBase]: 10725/15177 cut-off events. [2024-06-21 18:23:15,686 INFO L125 PetriNetUnfolderBase]: For 225626/225831 co-relation queries the response was YES. [2024-06-21 18:23:15,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77862 conditions, 15177 events. 10725/15177 cut-off events. For 225626/225831 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 88898 event pairs, 4091 based on Foata normal form. 52/15109 useless extension candidates. Maximal degree in co-relation 77810. Up to 14138 conditions per place. [2024-06-21 18:23:15,806 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 174 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-21 18:23:15,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 260 transitions, 2825 flow [2024-06-21 18:23:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-21 18:23:15,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989517819706499 [2024-06-21 18:23:15,808 INFO L175 Difference]: Start difference. First operand has 121 places, 216 transitions, 2111 flow. Second operand 9 states and 238 transitions. [2024-06-21 18:23:15,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 260 transitions, 2825 flow [2024-06-21 18:23:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 260 transitions, 2770 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-21 18:23:15,959 INFO L231 Difference]: Finished difference. Result has 126 places, 218 transitions, 2270 flow [2024-06-21 18:23:15,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2270, PETRI_PLACES=126, PETRI_TRANSITIONS=218} [2024-06-21 18:23:15,959 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2024-06-21 18:23:15,959 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 218 transitions, 2270 flow [2024-06-21 18:23:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:23:15,960 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:15,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1202701150, now seen corresponding path program 2 times [2024-06-21 18:23:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326303306] [2024-06-21 18:23:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:17,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326303306] [2024-06-21 18:23:17,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326303306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:17,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373995036] [2024-06-21 18:23:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:17,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:17,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:17,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:17,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 218 transitions, 2270 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:17,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:17,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:17,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:20,526 INFO L124 PetriNetUnfolderBase]: 10939/15464 cut-off events. [2024-06-21 18:23:20,526 INFO L125 PetriNetUnfolderBase]: For 256853/257034 co-relation queries the response was YES. [2024-06-21 18:23:20,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82042 conditions, 15464 events. 10939/15464 cut-off events. For 256853/257034 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 90161 event pairs, 4413 based on Foata normal form. 46/15380 useless extension candidates. Maximal degree in co-relation 81989. Up to 14278 conditions per place. [2024-06-21 18:23:20,686 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 185 selfloop transitions, 80 changer transitions 0/276 dead transitions. [2024-06-21 18:23:20,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 276 transitions, 3080 flow [2024-06-21 18:23:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:23:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:23:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-06-21 18:23:20,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037735849056604 [2024-06-21 18:23:20,688 INFO L175 Difference]: Start difference. First operand has 126 places, 218 transitions, 2270 flow. Second operand 10 states and 267 transitions. [2024-06-21 18:23:20,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 276 transitions, 3080 flow [2024-06-21 18:23:20,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 276 transitions, 2928 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 18:23:20,893 INFO L231 Difference]: Finished difference. Result has 130 places, 223 transitions, 2374 flow [2024-06-21 18:23:20,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2374, PETRI_PLACES=130, PETRI_TRANSITIONS=223} [2024-06-21 18:23:20,894 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-06-21 18:23:20,894 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 223 transitions, 2374 flow [2024-06-21 18:23:20,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:20,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:20,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:20,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:23:20,895 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)] === [2024-06-21 18:23:20,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1320849280, now seen corresponding path program 3 times [2024-06-21 18:23:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:20,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331236936] [2024-06-21 18:23:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331236936] [2024-06-21 18:23:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331236936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:22,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121230532] [2024-06-21 18:23:22,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:22,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:22,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:22,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 223 transitions, 2374 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:22,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:22,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:22,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:25,185 INFO L124 PetriNetUnfolderBase]: 10988/15577 cut-off events. [2024-06-21 18:23:25,186 INFO L125 PetriNetUnfolderBase]: For 284524/284699 co-relation queries the response was YES. [2024-06-21 18:23:25,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84845 conditions, 15577 events. 10988/15577 cut-off events. For 284524/284699 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91525 event pairs, 4527 based on Foata normal form. 98/15589 useless extension candidates. Maximal degree in co-relation 84790. Up to 14317 conditions per place. [2024-06-21 18:23:25,340 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 123 selfloop transitions, 136 changer transitions 0/270 dead transitions. [2024-06-21 18:23:25,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 270 transitions, 3154 flow [2024-06-21 18:23:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-21 18:23:25,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052410901467506 [2024-06-21 18:23:25,343 INFO L175 Difference]: Start difference. First operand has 130 places, 223 transitions, 2374 flow. Second operand 9 states and 241 transitions. [2024-06-21 18:23:25,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 270 transitions, 3154 flow [2024-06-21 18:23:25,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 270 transitions, 2994 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 18:23:25,580 INFO L231 Difference]: Finished difference. Result has 132 places, 225 transitions, 2552 flow [2024-06-21 18:23:25,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2552, PETRI_PLACES=132, PETRI_TRANSITIONS=225} [2024-06-21 18:23:25,581 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-21 18:23:25,581 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 225 transitions, 2552 flow [2024-06-21 18:23:25,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:25,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:25,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:25,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:23:25,582 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)] === [2024-06-21 18:23:25,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:25,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1294557892, now seen corresponding path program 1 times [2024-06-21 18:23:25,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64622093] [2024-06-21 18:23:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:27,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:27,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:27,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64622093] [2024-06-21 18:23:27,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64622093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:27,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:27,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:27,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151368593] [2024-06-21 18:23:27,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:27,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:27,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:27,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:27,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 225 transitions, 2552 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:27,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:27,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:27,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:30,034 INFO L124 PetriNetUnfolderBase]: 11671/16461 cut-off events. [2024-06-21 18:23:30,034 INFO L125 PetriNetUnfolderBase]: For 318035/318052 co-relation queries the response was YES. [2024-06-21 18:23:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89751 conditions, 16461 events. 11671/16461 cut-off events. For 318035/318052 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 93906 event pairs, 4761 based on Foata normal form. 16/16401 useless extension candidates. Maximal degree in co-relation 89695. Up to 15511 conditions per place. [2024-06-21 18:23:30,159 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 208 selfloop transitions, 63 changer transitions 0/280 dead transitions. [2024-06-21 18:23:30,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 280 transitions, 3462 flow [2024-06-21 18:23:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-21 18:23:30,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480083857442348 [2024-06-21 18:23:30,161 INFO L175 Difference]: Start difference. First operand has 132 places, 225 transitions, 2552 flow. Second operand 9 states and 229 transitions. [2024-06-21 18:23:30,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 280 transitions, 3462 flow [2024-06-21 18:23:30,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 280 transitions, 3050 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 18:23:30,394 INFO L231 Difference]: Finished difference. Result has 134 places, 238 transitions, 2480 flow [2024-06-21 18:23:30,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2480, PETRI_PLACES=134, PETRI_TRANSITIONS=238} [2024-06-21 18:23:30,394 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-21 18:23:30,395 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 238 transitions, 2480 flow [2024-06-21 18:23:30,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:30,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:30,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:30,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:23:30,395 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:30,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:30,396 INFO L85 PathProgramCache]: Analyzing trace with hash -532008544, now seen corresponding path program 1 times [2024-06-21 18:23:30,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41345886] [2024-06-21 18:23:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:31,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:31,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41345886] [2024-06-21 18:23:31,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41345886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:31,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:31,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:23:31,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435832762] [2024-06-21 18:23:31,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:31,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:23:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:23:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:23:31,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:31,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 238 transitions, 2480 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) [2024-06-21 18:23:31,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:31,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:31,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:34,085 INFO L124 PetriNetUnfolderBase]: 11622/16400 cut-off events. [2024-06-21 18:23:34,086 INFO L125 PetriNetUnfolderBase]: For 335641/335649 co-relation queries the response was YES. [2024-06-21 18:23:34,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91242 conditions, 16400 events. 11622/16400 cut-off events. For 335641/335649 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 93769 event pairs, 5132 based on Foata normal form. 9/16348 useless extension candidates. Maximal degree in co-relation 91185. Up to 15587 conditions per place. [2024-06-21 18:23:34,232 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 195 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-06-21 18:23:34,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 275 transitions, 3401 flow [2024-06-21 18:23:34,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:23:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:23:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-21 18:23:34,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-06-21 18:23:34,235 INFO L175 Difference]: Start difference. First operand has 134 places, 238 transitions, 2480 flow. Second operand 6 states and 163 transitions. [2024-06-21 18:23:34,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 275 transitions, 3401 flow [2024-06-21 18:23:34,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 275 transitions, 3142 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-21 18:23:34,502 INFO L231 Difference]: Finished difference. Result has 132 places, 250 transitions, 2523 flow [2024-06-21 18:23:34,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2523, PETRI_PLACES=132, PETRI_TRANSITIONS=250} [2024-06-21 18:23:34,503 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-06-21 18:23:34,503 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 250 transitions, 2523 flow [2024-06-21 18:23:34,503 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) [2024-06-21 18:23:34,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:34,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:23:34,504 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1527896576, now seen corresponding path program 4 times [2024-06-21 18:23:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:34,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839632197] [2024-06-21 18:23:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839632197] [2024-06-21 18:23:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839632197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498824372] [2024-06-21 18:23:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:36,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:36,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:23:36,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 250 transitions, 2523 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:36,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:36,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:23:36,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:38,797 INFO L124 PetriNetUnfolderBase]: 11271/16108 cut-off events. [2024-06-21 18:23:38,797 INFO L125 PetriNetUnfolderBase]: For 386251/386365 co-relation queries the response was YES. [2024-06-21 18:23:38,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95266 conditions, 16108 events. 11271/16108 cut-off events. For 386251/386365 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 95561 event pairs, 4463 based on Foata normal form. 48/16033 useless extension candidates. Maximal degree in co-relation 95208. Up to 14619 conditions per place. [2024-06-21 18:23:38,960 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 135 selfloop transitions, 145 changer transitions 0/295 dead transitions. [2024-06-21 18:23:38,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 295 transitions, 3347 flow [2024-06-21 18:23:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-21 18:23:38,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989517819706499 [2024-06-21 18:23:38,962 INFO L175 Difference]: Start difference. First operand has 132 places, 250 transitions, 2523 flow. Second operand 9 states and 238 transitions. [2024-06-21 18:23:38,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 295 transitions, 3347 flow [2024-06-21 18:23:39,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 295 transitions, 3320 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-21 18:23:39,295 INFO L231 Difference]: Finished difference. Result has 140 places, 252 transitions, 2860 flow [2024-06-21 18:23:39,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2860, PETRI_PLACES=140, PETRI_TRANSITIONS=252} [2024-06-21 18:23:39,295 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-21 18:23:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 252 transitions, 2860 flow [2024-06-21 18:23:39,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:39,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:39,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:23:39,296 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:39,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1299810728, now seen corresponding path program 2 times [2024-06-21 18:23:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:39,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821349744] [2024-06-21 18:23:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:39,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821349744] [2024-06-21 18:23:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821349744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226872879] [2024-06-21 18:23:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:41,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:41,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 252 transitions, 2860 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:41,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:41,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:41,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:43,676 INFO L124 PetriNetUnfolderBase]: 12024/16980 cut-off events. [2024-06-21 18:23:43,676 INFO L125 PetriNetUnfolderBase]: For 424189/424206 co-relation queries the response was YES. [2024-06-21 18:23:43,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101925 conditions, 16980 events. 12024/16980 cut-off events. For 424189/424206 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 97269 event pairs, 4774 based on Foata normal form. 18/16923 useless extension candidates. Maximal degree in co-relation 101864. Up to 15966 conditions per place. [2024-06-21 18:23:43,850 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 220 selfloop transitions, 82 changer transitions 0/314 dead transitions. [2024-06-21 18:23:43,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 314 transitions, 3918 flow [2024-06-21 18:23:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-21 18:23:43,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47379454926624737 [2024-06-21 18:23:43,851 INFO L175 Difference]: Start difference. First operand has 140 places, 252 transitions, 2860 flow. Second operand 9 states and 226 transitions. [2024-06-21 18:23:43,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 314 transitions, 3918 flow [2024-06-21 18:23:44,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 314 transitions, 3507 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 18:23:44,341 INFO L231 Difference]: Finished difference. Result has 142 places, 273 transitions, 2923 flow [2024-06-21 18:23:44,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2923, PETRI_PLACES=142, PETRI_TRANSITIONS=273} [2024-06-21 18:23:44,342 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 86 predicate places. [2024-06-21 18:23:44,342 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 273 transitions, 2923 flow [2024-06-21 18:23:44,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:44,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:44,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:44,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:23:44,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:44,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1291239848, now seen corresponding path program 3 times [2024-06-21 18:23:44,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:44,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732915951] [2024-06-21 18:23:44,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732915951] [2024-06-21 18:23:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732915951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:46,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:46,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201323733] [2024-06-21 18:23:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:46,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:46,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:46,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 273 transitions, 2923 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:46,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:46,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:46,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:49,281 INFO L124 PetriNetUnfolderBase]: 12060/17048 cut-off events. [2024-06-21 18:23:49,281 INFO L125 PetriNetUnfolderBase]: For 457818/457837 co-relation queries the response was YES. [2024-06-21 18:23:49,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105105 conditions, 17048 events. 12060/17048 cut-off events. For 457818/457837 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 97942 event pairs, 4491 based on Foata normal form. 20/16993 useless extension candidates. Maximal degree in co-relation 105043. Up to 15855 conditions per place. [2024-06-21 18:23:49,426 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 218 selfloop transitions, 93 changer transitions 0/323 dead transitions. [2024-06-21 18:23:49,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 323 transitions, 4011 flow [2024-06-21 18:23:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-21 18:23:49,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48218029350104824 [2024-06-21 18:23:49,428 INFO L175 Difference]: Start difference. First operand has 142 places, 273 transitions, 2923 flow. Second operand 9 states and 230 transitions. [2024-06-21 18:23:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 323 transitions, 4011 flow [2024-06-21 18:23:49,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 323 transitions, 3853 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-21 18:23:49,895 INFO L231 Difference]: Finished difference. Result has 147 places, 279 transitions, 3115 flow [2024-06-21 18:23:49,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3115, PETRI_PLACES=147, PETRI_TRANSITIONS=279} [2024-06-21 18:23:49,895 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-21 18:23:49,895 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 279 transitions, 3115 flow [2024-06-21 18:23:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:49,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:49,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:23:49,896 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:49,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1527711878, now seen corresponding path program 4 times [2024-06-21 18:23:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795073067] [2024-06-21 18:23:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:49,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795073067] [2024-06-21 18:23:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795073067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:52,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:52,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:23:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834712618] [2024-06-21 18:23:52,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:52,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:23:52,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:23:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:23:52,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:52,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 279 transitions, 3115 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:52,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:52,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:52,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:23:55,424 INFO L124 PetriNetUnfolderBase]: 12096/17097 cut-off events. [2024-06-21 18:23:55,424 INFO L125 PetriNetUnfolderBase]: For 493581/493598 co-relation queries the response was YES. [2024-06-21 18:23:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106639 conditions, 17097 events. 12096/17097 cut-off events. For 493581/493598 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 98129 event pairs, 4780 based on Foata normal form. 18/17040 useless extension candidates. Maximal degree in co-relation 106576. Up to 16070 conditions per place. [2024-06-21 18:23:55,567 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 230 selfloop transitions, 81 changer transitions 0/323 dead transitions. [2024-06-21 18:23:55,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 323 transitions, 4010 flow [2024-06-21 18:23:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:23:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:23:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-21 18:23:55,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758909853249476 [2024-06-21 18:23:55,569 INFO L175 Difference]: Start difference. First operand has 147 places, 279 transitions, 3115 flow. Second operand 9 states and 227 transitions. [2024-06-21 18:23:55,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 323 transitions, 4010 flow [2024-06-21 18:23:56,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 323 transitions, 3828 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-21 18:23:56,016 INFO L231 Difference]: Finished difference. Result has 152 places, 283 transitions, 3222 flow [2024-06-21 18:23:56,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3222, PETRI_PLACES=152, PETRI_TRANSITIONS=283} [2024-06-21 18:23:56,017 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-21 18:23:56,017 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 283 transitions, 3222 flow [2024-06-21 18:23:56,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:23:56,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:23:56,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:23:56,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:23:56,018 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:23:56,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:23:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -520580704, now seen corresponding path program 2 times [2024-06-21 18:23:56,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:23:56,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973240930] [2024-06-21 18:23:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:23:56,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:23:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:23:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:23:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:23:57,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973240930] [2024-06-21 18:23:57,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973240930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:23:57,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:23:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:23:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192031407] [2024-06-21 18:23:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:23:57,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:23:57,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:23:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:23:57,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:23:57,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 18:23:57,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 283 transitions, 3222 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) [2024-06-21 18:23:57,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:23:57,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 18:23:57,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:24:00,200 INFO L124 PetriNetUnfolderBase]: 11942/16937 cut-off events. [2024-06-21 18:24:00,200 INFO L125 PetriNetUnfolderBase]: For 509619/509623 co-relation queries the response was YES. [2024-06-21 18:24:00,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104890 conditions, 16937 events. 11942/16937 cut-off events. For 509619/509623 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 97942 event pairs, 5198 based on Foata normal form. 6/16885 useless extension candidates. Maximal degree in co-relation 104824. Up to 16013 conditions per place. [2024-06-21 18:24:00,366 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 209 selfloop transitions, 62 changer transitions 0/302 dead transitions. [2024-06-21 18:24:00,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 302 transitions, 3936 flow [2024-06-21 18:24:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:24:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:24:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 18:24:00,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-21 18:24:00,367 INFO L175 Difference]: Start difference. First operand has 152 places, 283 transitions, 3222 flow. Second operand 6 states and 156 transitions. [2024-06-21 18:24:00,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 302 transitions, 3936 flow [2024-06-21 18:24:00,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 302 transitions, 3689 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-21 18:24:00,797 INFO L231 Difference]: Finished difference. Result has 152 places, 283 transitions, 3110 flow [2024-06-21 18:24:00,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3110, PETRI_PLACES=152, PETRI_TRANSITIONS=283} [2024-06-21 18:24:00,797 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-21 18:24:00,797 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 283 transitions, 3110 flow [2024-06-21 18:24:00,798 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) [2024-06-21 18:24:00,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:24:00,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:24:00,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:24:00,798 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:24:00,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:24:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 149631608, now seen corresponding path program 5 times [2024-06-21 18:24:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:24:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354073770] [2024-06-21 18:24:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:24:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:24:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:24:02,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:24:02,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:24:02,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354073770] [2024-06-21 18:24:02,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354073770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:24:02,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:24:02,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:24:02,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223818272] [2024-06-21 18:24:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:24:02,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:24:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:24:02,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:24:02,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:24:02,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:24:02,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 283 transitions, 3110 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:24:02,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:24:02,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:24:05,525 INFO L124 PetriNetUnfolderBase]: 11945/17152 cut-off events. [2024-06-21 18:24:05,525 INFO L125 PetriNetUnfolderBase]: For 571491/571623 co-relation queries the response was YES. [2024-06-21 18:24:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112062 conditions, 17152 events. 11945/17152 cut-off events. For 571491/571623 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 103222 event pairs, 4522 based on Foata normal form. 70/17119 useless extension candidates. Maximal degree in co-relation 111994. Up to 15408 conditions per place. [2024-06-21 18:24:05,696 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 238 selfloop transitions, 112 changer transitions 0/367 dead transitions. [2024-06-21 18:24:05,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 367 transitions, 4470 flow [2024-06-21 18:24:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:24:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:24:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 307 transitions. [2024-06-21 18:24:05,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265866209262435 [2024-06-21 18:24:05,698 INFO L175 Difference]: Start difference. First operand has 152 places, 283 transitions, 3110 flow. Second operand 11 states and 307 transitions. [2024-06-21 18:24:05,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 367 transitions, 4470 flow [2024-06-21 18:24:06,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 367 transitions, 4362 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 18:24:06,080 INFO L231 Difference]: Finished difference. Result has 161 places, 297 transitions, 3524 flow [2024-06-21 18:24:06,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3002, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3524, PETRI_PLACES=161, PETRI_TRANSITIONS=297} [2024-06-21 18:24:06,080 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-06-21 18:24:06,081 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 297 transitions, 3524 flow [2024-06-21 18:24:06,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:06,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:24:06,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:24:06,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 18:24:06,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:24:06,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:24:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash 99730778, now seen corresponding path program 6 times [2024-06-21 18:24:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:24:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896183187] [2024-06-21 18:24:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:24:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:24:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:24:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:24:07,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:24:07,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896183187] [2024-06-21 18:24:07,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896183187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:24:07,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:24:07,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:24:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039244089] [2024-06-21 18:24:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:24:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:24:07,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:24:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:24:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:24:07,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:24:07,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 297 transitions, 3524 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:07,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:24:07,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:24:07,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:24:10,989 INFO L124 PetriNetUnfolderBase]: 12151/17464 cut-off events. [2024-06-21 18:24:10,989 INFO L125 PetriNetUnfolderBase]: For 630803/630953 co-relation queries the response was YES. [2024-06-21 18:24:11,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117256 conditions, 17464 events. 12151/17464 cut-off events. For 630803/630953 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 105648 event pairs, 4705 based on Foata normal form. 88/17445 useless extension candidates. Maximal degree in co-relation 117185. Up to 16049 conditions per place. [2024-06-21 18:24:11,180 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 243 selfloop transitions, 102 changer transitions 0/362 dead transitions. [2024-06-21 18:24:11,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 362 transitions, 4572 flow [2024-06-21 18:24:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:24:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:24:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-21 18:24:11,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128644939965694 [2024-06-21 18:24:11,182 INFO L175 Difference]: Start difference. First operand has 161 places, 297 transitions, 3524 flow. Second operand 11 states and 299 transitions. [2024-06-21 18:24:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 362 transitions, 4572 flow [2024-06-21 18:24:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 362 transitions, 4397 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-21 18:24:11,769 INFO L231 Difference]: Finished difference. Result has 165 places, 301 transitions, 3693 flow [2024-06-21 18:24:11,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3693, PETRI_PLACES=165, PETRI_TRANSITIONS=301} [2024-06-21 18:24:11,770 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-21 18:24:11,770 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 301 transitions, 3693 flow [2024-06-21 18:24:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:11,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:24:11,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:24:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 18:24:11,771 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:24:11,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:24:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 859215582, now seen corresponding path program 7 times [2024-06-21 18:24:11,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:24:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032037839] [2024-06-21 18:24:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:24:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:24:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:24:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:24:12,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:24:12,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032037839] [2024-06-21 18:24:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032037839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:24:12,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:24:12,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:24:12,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613307715] [2024-06-21 18:24:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:24:12,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:24:12,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:24:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:24:12,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:24:12,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-06-21 18:24:12,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 301 transitions, 3693 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:12,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:24:12,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-06-21 18:24:12,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:24:15,953 INFO L124 PetriNetUnfolderBase]: 9290/14896 cut-off events. [2024-06-21 18:24:15,953 INFO L125 PetriNetUnfolderBase]: For 623404/623944 co-relation queries the response was YES. [2024-06-21 18:24:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104592 conditions, 14896 events. 9290/14896 cut-off events. For 623404/623944 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 103842 event pairs, 2747 based on Foata normal form. 122/14597 useless extension candidates. Maximal degree in co-relation 104519. Up to 10857 conditions per place. [2024-06-21 18:24:16,109 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 189 selfloop transitions, 121 changer transitions 0/384 dead transitions. [2024-06-21 18:24:16,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 384 transitions, 5191 flow [2024-06-21 18:24:16,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 18:24:16,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 18:24:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-06-21 18:24:16,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830188679245283 [2024-06-21 18:24:16,111 INFO L175 Difference]: Start difference. First operand has 165 places, 301 transitions, 3693 flow. Second operand 10 states and 309 transitions. [2024-06-21 18:24:16,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 384 transitions, 5191 flow [2024-06-21 18:24:16,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 384 transitions, 4963 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 18:24:16,742 INFO L231 Difference]: Finished difference. Result has 168 places, 323 transitions, 4199 flow [2024-06-21 18:24:16,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4199, PETRI_PLACES=168, PETRI_TRANSITIONS=323} [2024-06-21 18:24:16,745 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2024-06-21 18:24:16,745 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 323 transitions, 4199 flow [2024-06-21 18:24:16,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:16,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:24:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:24:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 18:24:16,746 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:24:16,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:24:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash -637780658, now seen corresponding path program 8 times [2024-06-21 18:24:16,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:24:16,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357008152] [2024-06-21 18:24:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:24:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:24:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:24:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:24:18,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:24:18,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357008152] [2024-06-21 18:24:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357008152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:24:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:24:18,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:24:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846136614] [2024-06-21 18:24:18,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:24:18,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:24:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:24:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:24:18,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:24:18,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 18:24:18,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 323 transitions, 4199 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:24:18,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:24:18,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 18:24:18,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand