./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.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/mix008_tso.oepc.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/mix008_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix008_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 18:27:13,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 18:27:13,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 18:27:13,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 18:27:13,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 18:27:13,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 18:27:13,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 18:27:13,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 18:27:13,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 18:27:13,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 18:27:13,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 18:27:13,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 18:27:13,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 18:27:13,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 18:27:13,155 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 18:27:13,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 18:27:13,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 18:27:13,156 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 18:27:13,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 18:27:13,156 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 18:27:13,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 18:27:13,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 18:27:13,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 18:27:13,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 18:27:13,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 18:27:13,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 18:27:13,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 18:27:13,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 18:27:13,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 18:27:13,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 18:27:13,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 18:27:13,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 18:27:13,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:27:13,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 18:27:13,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 18:27:13,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 18:27:13,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 18:27:13,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 18:27:13,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 18:27:13,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 18:27:13,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 18:27:13,360 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 18:27:13,360 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 18:27:13,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-21 18:27:14,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 18:27:14,557 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 18:27:14,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix008_tso.oepc.i [2024-06-21 18:27:14,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de70f0216/141c0c6ebe0c4d298056718712ddbc73/FLAGe90733a5d [2024-06-21 18:27:14,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de70f0216/141c0c6ebe0c4d298056718712ddbc73 [2024-06-21 18:27:14,593 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 18:27:14,596 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 18:27:14,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix008_tso.oepc.yml/witness.yml [2024-06-21 18:27:14,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 18:27:14,718 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 18:27:14,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 18:27:14,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 18:27:14,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 18:27:14,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:27:14" (1/2) ... [2024-06-21 18:27:14,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@956c413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:27:14, skipping insertion in model container [2024-06-21 18:27:14,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 06:27:14" (1/2) ... [2024-06-21 18:27:14,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@615db663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 06:27:14, skipping insertion in model container [2024-06-21 18:27:14,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:27:14" (2/2) ... [2024-06-21 18:27:14,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@956c413 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:14, skipping insertion in model container [2024-06-21 18:27:14,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:27:14" (2/2) ... [2024-06-21 18:27:14,726 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 18:27:14,744 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 18:27:14,745 INFO L97 edCorrectnessWitness]: Location invariant before [L926-L926] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((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 )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 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 18:27:14,746 INFO L97 edCorrectnessWitness]: Location invariant before [L930-L930] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((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 )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 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 18:27:14,746 INFO L97 edCorrectnessWitness]: Location invariant before [L931-L931] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((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 )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 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 18:27:14,746 INFO L97 edCorrectnessWitness]: Location invariant before [L928-L928] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((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 )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z$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_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 )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (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 )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 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 18:27:14,746 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 18:27:14,746 INFO L106 edCorrectnessWitness]: ghost_update [L924-L924] multithreaded = 1; [2024-06-21 18:27:14,785 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 18:27:15,144 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:27:15,160 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 18:27:15,322 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 18:27:15,354 INFO L206 MainTranslator]: Completed translation [2024-06-21 18:27:15,355 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15 WrapperNode [2024-06-21 18:27:15,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 18:27:15,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 18:27:15,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 18:27:15,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 18:27:15,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,454 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 286 [2024-06-21 18:27:15,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 18:27:15,455 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 18:27:15,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 18:27:15,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 18:27:15,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,491 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 18:27:15,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 18:27:15,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 18:27:15,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 18:27:15,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 18:27:15,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (1/1) ... [2024-06-21 18:27:15,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 18:27:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 18:27:15,544 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 18:27:15,561 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 18:27:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 18:27:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 18:27:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 18:27:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 18:27:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 18:27:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 18:27:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 18:27:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 18:27:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 18:27:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 18:27:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 18:27:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 18:27:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 18:27:15,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 18:27:15,580 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 18:27:15,714 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 18:27:15,716 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 18:27:16,339 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 18:27:16,339 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 18:27:16,576 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 18:27:16,576 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 18:27:16,577 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:27:16 BoogieIcfgContainer [2024-06-21 18:27:16,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 18:27:16,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 18:27:16,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 18:27:16,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 18:27:16,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 06:27:14" (1/4) ... [2024-06-21 18:27:16,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31439691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 06:27:16, skipping insertion in model container [2024-06-21 18:27:16,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 06:27:14" (2/4) ... [2024-06-21 18:27:16,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31439691 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:27:16, skipping insertion in model container [2024-06-21 18:27:16,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 06:27:15" (3/4) ... [2024-06-21 18:27:16,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31439691 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 06:27:16, skipping insertion in model container [2024-06-21 18:27:16,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 06:27:16" (4/4) ... [2024-06-21 18:27:16,586 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_tso.oepc.i [2024-06-21 18:27:16,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 18:27:16,600 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 18:27:16,600 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 18:27:16,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 18:27:16,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:27:16,740 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 18:27:16,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:27:16,742 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 87 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 18:27:16,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 18:27:16,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 18:27:16,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 18:27:16,766 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;@65ef472f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 18:27:16,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 18:27:16,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 18:27:16,771 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 18:27:16,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 18:27:16,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:16,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 18:27:16,773 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 18:27:16,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 613012031, now seen corresponding path program 1 times [2024-06-21 18:27:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:16,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852310437] [2024-06-21 18:27:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:16,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:18,805 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 18:27:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852310437] [2024-06-21 18:27:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852310437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:18,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:18,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 18:27:18,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701044530] [2024-06-21 18:27:18,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 18:27:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 18:27:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 18:27:18,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 18:27:18,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:27:18,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:18,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 18:27:18,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:21,993 INFO L124 PetriNetUnfolderBase]: 13599/18732 cut-off events. [2024-06-21 18:27:21,994 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-06-21 18:27:22,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37586 conditions, 18732 events. 13599/18732 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 103397 event pairs, 10515 based on Foata normal form. 1/18248 useless extension candidates. Maximal degree in co-relation 37573. Up to 18345 conditions per place. [2024-06-21 18:27:22,104 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 45 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 18:27:22,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 235 flow [2024-06-21 18:27:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 18:27:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 18:27:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-21 18:27:22,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-21 18:27:22,116 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 93 transitions. [2024-06-21 18:27:22,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 235 flow [2024-06-21 18:27:22,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:27:22,126 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 18:27:22,127 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 18:27:22,130 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 18:27:22,130 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 18:27:22,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:27:22,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:22,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:22,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 18:27:22,131 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 18:27:22,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash 694086558, now seen corresponding path program 1 times [2024-06-21 18:27:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:22,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152087211] [2024-06-21 18:27:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:22,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:27:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152087211] [2024-06-21 18:27:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152087211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 18:27:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636479161] [2024-06-21 18:27:23,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 18:27:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 18:27:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 18:27:24,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:27:24,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 18:27:24,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:24,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:27:24,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:27,122 INFO L124 PetriNetUnfolderBase]: 15578/20977 cut-off events. [2024-06-21 18:27:27,122 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2024-06-21 18:27:27,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47505 conditions, 20977 events. 15578/20977 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111485 event pairs, 10885 based on Foata normal form. 4/20979 useless extension candidates. Maximal degree in co-relation 47493. Up to 20929 conditions per place. [2024-06-21 18:27:27,214 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 56 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 18:27:27,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 329 flow [2024-06-21 18:27:27,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 18:27:27,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 18:27:27,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-21 18:27:27,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518867924528302 [2024-06-21 18:27:27,216 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 117 transitions. [2024-06-21 18:27:27,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 329 flow [2024-06-21 18:27:27,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 18:27:27,222 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 18:27:27,222 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 18:27:27,223 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 18:27:27,223 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 18:27:27,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 18:27:27,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:27,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:27,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 18:27:27,227 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 18:27:27,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash 41848264, now seen corresponding path program 1 times [2024-06-21 18:27:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208589293] [2024-06-21 18:27:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:28,972 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 18:27:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:28,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208589293] [2024-06-21 18:27:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208589293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:28,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:28,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:27:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150673557] [2024-06-21 18:27:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:28,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:27:28,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:27:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:27:29,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:27:29,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:29,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:29,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:27:29,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:31,983 INFO L124 PetriNetUnfolderBase]: 15596/21015 cut-off events. [2024-06-21 18:27:31,984 INFO L125 PetriNetUnfolderBase]: For 11411/11411 co-relation queries the response was YES. [2024-06-21 18:27:32,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52629 conditions, 21015 events. 15596/21015 cut-off events. For 11411/11411 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 111875 event pairs, 8781 based on Foata normal form. 7/21020 useless extension candidates. Maximal degree in co-relation 52615. Up to 20850 conditions per place. [2024-06-21 18:27:32,085 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 18:27:32,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 545 flow [2024-06-21 18:27:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:27:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:27:32,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-21 18:27:32,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773584905660377 [2024-06-21 18:27:32,087 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 153 transitions. [2024-06-21 18:27:32,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 545 flow [2024-06-21 18:27:32,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 18:27:32,092 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-21 18:27:32,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-21 18:27:32,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 18:27:32,094 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-21 18:27:32,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:32,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:32,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:32,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 18:27:32,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:27:32,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1020452069, now seen corresponding path program 1 times [2024-06-21 18:27:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013271047] [2024-06-21 18:27:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:34,013 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 18:27:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013271047] [2024-06-21 18:27:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013271047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:34,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:34,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:34,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718089655] [2024-06-21 18:27:34,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:34,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:34,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:34,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:34,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 18:27:34,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:34,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:34,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 18:27:34,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:37,035 INFO L124 PetriNetUnfolderBase]: 15625/21058 cut-off events. [2024-06-21 18:27:37,035 INFO L125 PetriNetUnfolderBase]: For 27158/27162 co-relation queries the response was YES. [2024-06-21 18:27:37,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60975 conditions, 21058 events. 15625/21058 cut-off events. For 27158/27162 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 112403 event pairs, 7330 based on Foata normal form. 18/21074 useless extension candidates. Maximal degree in co-relation 60958. Up to 20815 conditions per place. [2024-06-21 18:27:37,141 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 81 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-21 18:27:37,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 690 flow [2024-06-21 18:27:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-06-21 18:27:37,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534591194968553 [2024-06-21 18:27:37,146 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 176 transitions. [2024-06-21 18:27:37,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 690 flow [2024-06-21 18:27:37,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 678 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 18:27:37,158 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-21 18:27:37,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-21 18:27:37,160 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-21 18:27:37,160 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-21 18:27:37,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:37,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:37,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:37,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 18:27:37,161 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 18:27:37,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash 898557513, now seen corresponding path program 1 times [2024-06-21 18:27:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:37,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808888301] [2024-06-21 18:27:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:39,358 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 18:27:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808888301] [2024-06-21 18:27:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808888301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:39,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:39,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:27:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700476054] [2024-06-21 18:27:39,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:27:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:39,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:27:39,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:27:39,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:27:39,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 18:27:39,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:39,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:27:39,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:42,451 INFO L124 PetriNetUnfolderBase]: 13627/18797 cut-off events. [2024-06-21 18:27:42,451 INFO L125 PetriNetUnfolderBase]: For 35019/35019 co-relation queries the response was YES. [2024-06-21 18:27:42,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58560 conditions, 18797 events. 13627/18797 cut-off events. For 35019/35019 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 104364 event pairs, 7453 based on Foata normal form. 3/18568 useless extension candidates. Maximal degree in co-relation 58539. Up to 18372 conditions per place. [2024-06-21 18:27:42,541 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 68 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-21 18:27:42,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 605 flow [2024-06-21 18:27:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 18:27:42,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 18:27:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-21 18:27:42,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-21 18:27:42,542 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 120 transitions. [2024-06-21 18:27:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 605 flow [2024-06-21 18:27:42,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 534 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 18:27:42,550 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 374 flow [2024-06-21 18:27:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-21 18:27:42,551 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-21 18:27:42,551 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 374 flow [2024-06-21 18:27:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states 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 18:27:42,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:42,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:42,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 18:27:42,552 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 18:27:42,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2060542119, now seen corresponding path program 1 times [2024-06-21 18:27:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:42,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521078899] [2024-06-21 18:27:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:45,196 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 18:27:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521078899] [2024-06-21 18:27:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521078899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:45,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:45,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752197682] [2024-06-21 18:27:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:45,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:45,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:27:45,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:45,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:45,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:27:45,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:48,934 INFO L124 PetriNetUnfolderBase]: 13609/18763 cut-off events. [2024-06-21 18:27:48,935 INFO L125 PetriNetUnfolderBase]: For 41018/41018 co-relation queries the response was YES. [2024-06-21 18:27:48,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59592 conditions, 18763 events. 13609/18763 cut-off events. For 41018/41018 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 103836 event pairs, 7129 based on Foata normal form. 6/18529 useless extension candidates. Maximal degree in co-relation 59567. Up to 18318 conditions per place. [2024-06-21 18:27:49,010 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 76 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-21 18:27:49,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 648 flow [2024-06-21 18:27:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-21 18:27:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449685534591195 [2024-06-21 18:27:49,011 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 374 flow. Second operand 6 states and 143 transitions. [2024-06-21 18:27:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 648 flow [2024-06-21 18:27:49,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 624 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 18:27:49,022 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 431 flow [2024-06-21 18:27:49,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-21 18:27:49,025 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-21 18:27:49,025 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 431 flow [2024-06-21 18:27:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:27:49,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:49,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 18:27:49,026 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 18:27:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -553424634, now seen corresponding path program 1 times [2024-06-21 18:27:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364308181] [2024-06-21 18:27:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:51,535 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 18:27:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:51,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364308181] [2024-06-21 18:27:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364308181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:51,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:51,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462088607] [2024-06-21 18:27:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:51,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:27:51,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:27:51,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:51,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:27:51,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:27:55,167 INFO L124 PetriNetUnfolderBase]: 15747/21246 cut-off events. [2024-06-21 18:27:55,167 INFO L125 PetriNetUnfolderBase]: For 65291/65299 co-relation queries the response was YES. [2024-06-21 18:27:55,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72993 conditions, 21246 events. 15747/21246 cut-off events. For 65291/65299 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 112402 event pairs, 8826 based on Foata normal form. 14/21256 useless extension candidates. Maximal degree in co-relation 72966. Up to 20977 conditions per place. [2024-06-21 18:27:55,292 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 82 selfloop transitions, 38 changer transitions 0/125 dead transitions. [2024-06-21 18:27:55,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 959 flow [2024-06-21 18:27:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:27:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:27:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 18:27:55,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779874213836478 [2024-06-21 18:27:55,294 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 431 flow. Second operand 6 states and 152 transitions. [2024-06-21 18:27:55,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 959 flow [2024-06-21 18:27:55,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 918 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 18:27:55,312 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 623 flow [2024-06-21 18:27:55,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2024-06-21 18:27:55,313 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-21 18:27:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 623 flow [2024-06-21 18:27:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:27:55,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:27:55,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:27:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 18:27:55,313 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 18:27:55,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:27:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 225971166, now seen corresponding path program 2 times [2024-06-21 18:27:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:27:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289081996] [2024-06-21 18:27:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:27:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:27:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:27:57,818 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 18:27:57,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:27:57,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289081996] [2024-06-21 18:27:57,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289081996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:27:57,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:27:57,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:27:57,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984611430] [2024-06-21 18:27:57,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:27:57,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:27:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:27:57,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:27:57,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:27:57,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:27:57,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:27:57,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:27:57,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:27:57,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:01,424 INFO L124 PetriNetUnfolderBase]: 15732/21207 cut-off events. [2024-06-21 18:28:01,425 INFO L125 PetriNetUnfolderBase]: For 76598/76600 co-relation queries the response was YES. [2024-06-21 18:28:01,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74874 conditions, 21207 events. 15732/21207 cut-off events. For 76598/76600 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 111877 event pairs, 8828 based on Foata normal form. 5/21205 useless extension candidates. Maximal degree in co-relation 74843. Up to 20962 conditions per place. [2024-06-21 18:28:01,572 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 73 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2024-06-21 18:28:01,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 979 flow [2024-06-21 18:28:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-21 18:28:01,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-21 18:28:01,573 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 623 flow. Second operand 6 states and 147 transitions. [2024-06-21 18:28:01,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 979 flow [2024-06-21 18:28:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 120 transitions, 937 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 18:28:01,595 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 688 flow [2024-06-21 18:28:01,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-21 18:28:01,596 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-21 18:28:01,596 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 688 flow [2024-06-21 18:28:01,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:28:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:01,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:01,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 18:28:01,597 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 18:28:01,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:01,597 INFO L85 PathProgramCache]: Analyzing trace with hash 293665030, now seen corresponding path program 3 times [2024-06-21 18:28:01,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:01,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191387613] [2024-06-21 18:28:01,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:03,453 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 18:28:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191387613] [2024-06-21 18:28:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191387613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:03,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:03,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:28:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287199000] [2024-06-21 18:28:03,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:03,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:28:03,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:28:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:28:03,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:03,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:28:03,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:03,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:03,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:07,099 INFO L124 PetriNetUnfolderBase]: 15843/21368 cut-off events. [2024-06-21 18:28:07,100 INFO L125 PetriNetUnfolderBase]: For 90438/90448 co-relation queries the response was YES. [2024-06-21 18:28:07,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77508 conditions, 21368 events. 15843/21368 cut-off events. For 90438/90448 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 112921 event pairs, 8810 based on Foata normal form. 16/21382 useless extension candidates. Maximal degree in co-relation 77473. Up to 21039 conditions per place. [2024-06-21 18:28:07,206 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 84 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-21 18:28:07,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 149 transitions, 1305 flow [2024-06-21 18:28:07,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-21 18:28:07,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4501347708894879 [2024-06-21 18:28:07,207 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 688 flow. Second operand 7 states and 167 transitions. [2024-06-21 18:28:07,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 149 transitions, 1305 flow [2024-06-21 18:28:07,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 1220 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-21 18:28:07,253 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1015 flow [2024-06-21 18:28:07,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1015, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-06-21 18:28:07,253 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-21 18:28:07,254 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1015 flow [2024-06-21 18:28:07,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states 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 18:28:07,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:07,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:07,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 18:28:07,254 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 18:28:07,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:07,254 INFO L85 PathProgramCache]: Analyzing trace with hash 23706472, now seen corresponding path program 1 times [2024-06-21 18:28:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559002387] [2024-06-21 18:28:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:10,346 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 18:28:10,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559002387] [2024-06-21 18:28:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559002387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:10,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918669256] [2024-06-21 18:28:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:10,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:10,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:10,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:10,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1015 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:10,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:10,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:10,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:14,351 INFO L124 PetriNetUnfolderBase]: 16055/21685 cut-off events. [2024-06-21 18:28:14,351 INFO L125 PetriNetUnfolderBase]: For 108818/108826 co-relation queries the response was YES. [2024-06-21 18:28:14,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81055 conditions, 21685 events. 16055/21685 cut-off events. For 108818/108826 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 114812 event pairs, 6889 based on Foata normal form. 17/21698 useless extension candidates. Maximal degree in co-relation 81016. Up to 20961 conditions per place. [2024-06-21 18:28:14,512 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 100 selfloop transitions, 68 changer transitions 0/173 dead transitions. [2024-06-21 18:28:14,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1713 flow [2024-06-21 18:28:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-21 18:28:14,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-21 18:28:14,514 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1015 flow. Second operand 7 states and 179 transitions. [2024-06-21 18:28:14,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1713 flow [2024-06-21 18:28:14,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1650 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:14,571 INFO L231 Difference]: Finished difference. Result has 92 places, 128 transitions, 1216 flow [2024-06-21 18:28:14,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1216, PETRI_PLACES=92, PETRI_TRANSITIONS=128} [2024-06-21 18:28:14,571 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-21 18:28:14,572 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 128 transitions, 1216 flow [2024-06-21 18:28:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:14,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:14,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 18:28:14,572 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 18:28:14,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1603595834, now seen corresponding path program 2 times [2024-06-21 18:28:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:14,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115709315] [2024-06-21 18:28:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:17,605 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 18:28:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115709315] [2024-06-21 18:28:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115709315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:17,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:17,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876939349] [2024-06-21 18:28:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:17,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:17,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:17,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 128 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:17,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:17,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:17,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:21,925 INFO L124 PetriNetUnfolderBase]: 16161/21813 cut-off events. [2024-06-21 18:28:21,925 INFO L125 PetriNetUnfolderBase]: For 138271/138273 co-relation queries the response was YES. [2024-06-21 18:28:21,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88005 conditions, 21813 events. 16161/21813 cut-off events. For 138271/138273 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 115163 event pairs, 6868 based on Foata normal form. 8/21811 useless extension candidates. Maximal degree in co-relation 87965. Up to 21036 conditions per place. [2024-06-21 18:28:22,057 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 100 selfloop transitions, 84 changer transitions 0/189 dead transitions. [2024-06-21 18:28:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 189 transitions, 2048 flow [2024-06-21 18:28:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 18:28:22,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-21 18:28:22,059 INFO L175 Difference]: Start difference. First operand has 92 places, 128 transitions, 1216 flow. Second operand 7 states and 181 transitions. [2024-06-21 18:28:22,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 189 transitions, 2048 flow [2024-06-21 18:28:22,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 189 transitions, 1982 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:22,129 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 1466 flow [2024-06-21 18:28:22,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1466, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-06-21 18:28:22,129 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-21 18:28:22,129 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 1466 flow [2024-06-21 18:28:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:22,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:22,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:22,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 18:28:22,130 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 18:28:22,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:22,130 INFO L85 PathProgramCache]: Analyzing trace with hash 201075142, now seen corresponding path program 3 times [2024-06-21 18:28:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:22,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701099286] [2024-06-21 18:28:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:25,137 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 18:28:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701099286] [2024-06-21 18:28:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701099286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:25,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000668027] [2024-06-21 18:28:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:25,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:25,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 1466 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:25,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:25,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:25,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:29,562 INFO L124 PetriNetUnfolderBase]: 16143/21785 cut-off events. [2024-06-21 18:28:29,562 INFO L125 PetriNetUnfolderBase]: For 161603/161605 co-relation queries the response was YES. [2024-06-21 18:28:29,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91172 conditions, 21785 events. 16143/21785 cut-off events. For 161603/161605 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 114968 event pairs, 6868 based on Foata normal form. 8/21783 useless extension candidates. Maximal degree in co-relation 91129. Up to 21027 conditions per place. [2024-06-21 18:28:29,669 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 90 selfloop transitions, 88 changer transitions 0/183 dead transitions. [2024-06-21 18:28:29,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 183 transitions, 2086 flow [2024-06-21 18:28:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-21 18:28:29,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477088948787062 [2024-06-21 18:28:29,681 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 1466 flow. Second operand 7 states and 177 transitions. [2024-06-21 18:28:29,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 183 transitions, 2086 flow [2024-06-21 18:28:29,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 183 transitions, 2044 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-21 18:28:29,785 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1613 flow [2024-06-21 18:28:29,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1613, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-21 18:28:29,785 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 46 predicate places. [2024-06-21 18:28:29,786 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1613 flow [2024-06-21 18:28:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:29,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 18:28:29,786 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 18:28:29,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash 513682280, now seen corresponding path program 4 times [2024-06-21 18:28:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:29,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379157504] [2024-06-21 18:28:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:32,224 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 18:28:32,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:32,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379157504] [2024-06-21 18:28:32,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379157504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:32,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:32,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:32,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433300136] [2024-06-21 18:28:32,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:32,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:32,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:32,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:32,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:32,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1613 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:32,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:32,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:32,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:36,656 INFO L124 PetriNetUnfolderBase]: 16373/22106 cut-off events. [2024-06-21 18:28:36,656 INFO L125 PetriNetUnfolderBase]: For 182191/182201 co-relation queries the response was YES. [2024-06-21 18:28:36,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94235 conditions, 22106 events. 16373/22106 cut-off events. For 182191/182201 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 117035 event pairs, 6875 based on Foata normal form. 19/22123 useless extension candidates. Maximal degree in co-relation 94188. Up to 21191 conditions per place. [2024-06-21 18:28:36,830 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 111 selfloop transitions, 100 changer transitions 0/216 dead transitions. [2024-06-21 18:28:36,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 216 transitions, 2632 flow [2024-06-21 18:28:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-21 18:28:36,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47641509433962265 [2024-06-21 18:28:36,832 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1613 flow. Second operand 8 states and 202 transitions. [2024-06-21 18:28:36,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 216 transitions, 2632 flow [2024-06-21 18:28:36,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 216 transitions, 2370 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:36,992 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1868 flow [2024-06-21 18:28:36,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1868, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2024-06-21 18:28:36,993 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-21 18:28:36,993 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1868 flow [2024-06-21 18:28:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:36,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 18:28:36,993 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 18:28:36,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:36,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1603349756, now seen corresponding path program 1 times [2024-06-21 18:28:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055800572] [2024-06-21 18:28:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:41,360 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 18:28:41,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:41,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055800572] [2024-06-21 18:28:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055800572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:41,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:28:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973657343] [2024-06-21 18:28:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:41,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:28:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:28:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:28:41,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:28:41,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1868 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 18:28:41,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:41,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:28:41,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:45,551 INFO L124 PetriNetUnfolderBase]: 14369/19701 cut-off events. [2024-06-21 18:28:45,552 INFO L125 PetriNetUnfolderBase]: For 178547/178549 co-relation queries the response was YES. [2024-06-21 18:28:45,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85567 conditions, 19701 events. 14369/19701 cut-off events. For 178547/178549 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 107257 event pairs, 6411 based on Foata normal form. 6/19563 useless extension candidates. Maximal degree in co-relation 85518. Up to 19309 conditions per place. [2024-06-21 18:28:45,672 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 172 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-21 18:28:45,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2400 flow [2024-06-21 18:28:45,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:28:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:28:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-21 18:28:45,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-21 18:28:45,674 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1868 flow. Second operand 8 states and 176 transitions. [2024-06-21 18:28:45,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2400 flow [2024-06-21 18:28:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 197 transitions, 2272 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 18:28:45,817 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1846 flow [2024-06-21 18:28:45,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1846, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-06-21 18:28:45,817 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-21 18:28:45,818 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1846 flow [2024-06-21 18:28:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 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 18:28:45,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:45,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:45,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 18:28:45,818 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 18:28:45,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 24799281, now seen corresponding path program 1 times [2024-06-21 18:28:45,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:45,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616152868] [2024-06-21 18:28:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:45,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:47,958 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 18:28:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:47,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616152868] [2024-06-21 18:28:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616152868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:47,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:47,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 18:28:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171638316] [2024-06-21 18:28:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:47,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 18:28:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:47,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 18:28:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 18:28:48,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:28:48,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1846 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:28:48,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:48,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:28:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:51,315 INFO L124 PetriNetUnfolderBase]: 14362/19838 cut-off events. [2024-06-21 18:28:51,315 INFO L125 PetriNetUnfolderBase]: For 198778/198780 co-relation queries the response was YES. [2024-06-21 18:28:51,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88187 conditions, 19838 events. 14362/19838 cut-off events. For 198778/198780 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 108947 event pairs, 6693 based on Foata normal form. 2/19598 useless extension candidates. Maximal degree in co-relation 88136. Up to 19366 conditions per place. [2024-06-21 18:28:51,474 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 164 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2024-06-21 18:28:51,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 182 transitions, 2276 flow [2024-06-21 18:28:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:28:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:28:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-21 18:28:51,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39937106918238996 [2024-06-21 18:28:51,475 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1846 flow. Second operand 6 states and 127 transitions. [2024-06-21 18:28:51,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 182 transitions, 2276 flow [2024-06-21 18:28:51,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 182 transitions, 2198 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 18:28:51,644 INFO L231 Difference]: Finished difference. Result has 111 places, 169 transitions, 1847 flow [2024-06-21 18:28:51,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1847, PETRI_PLACES=111, PETRI_TRANSITIONS=169} [2024-06-21 18:28:51,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-06-21 18:28:51,645 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 169 transitions, 1847 flow [2024-06-21 18:28:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 18:28:51,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:51,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:51,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 18:28:51,646 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:28:51,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:51,646 INFO L85 PathProgramCache]: Analyzing trace with hash 734901388, now seen corresponding path program 1 times [2024-06-21 18:28:51,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:51,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351659994] [2024-06-21 18:28:51,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:28:54,727 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 18:28:54,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:28:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351659994] [2024-06-21 18:28:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351659994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:28:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:28:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:28:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327283681] [2024-06-21 18:28:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:28:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:28:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:28:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:28:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:28:54,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:28:54,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 169 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:54,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:28:54,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:28:54,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:28:59,181 INFO L124 PetriNetUnfolderBase]: 16543/22388 cut-off events. [2024-06-21 18:28:59,182 INFO L125 PetriNetUnfolderBase]: For 264666/264682 co-relation queries the response was YES. [2024-06-21 18:28:59,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104862 conditions, 22388 events. 16543/22388 cut-off events. For 264666/264682 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 118325 event pairs, 6874 based on Foata normal form. 24/22408 useless extension candidates. Maximal degree in co-relation 104812. Up to 21328 conditions per place. [2024-06-21 18:28:59,331 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 115 selfloop transitions, 112 changer transitions 0/232 dead transitions. [2024-06-21 18:28:59,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 232 transitions, 2935 flow [2024-06-21 18:28:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:28:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:28:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-21 18:28:59,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2024-06-21 18:28:59,333 INFO L175 Difference]: Start difference. First operand has 111 places, 169 transitions, 1847 flow. Second operand 7 states and 182 transitions. [2024-06-21 18:28:59,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 232 transitions, 2935 flow [2024-06-21 18:28:59,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 232 transitions, 2886 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-21 18:28:59,467 INFO L231 Difference]: Finished difference. Result has 114 places, 185 transitions, 2257 flow [2024-06-21 18:28:59,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2257, PETRI_PLACES=114, PETRI_TRANSITIONS=185} [2024-06-21 18:28:59,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-06-21 18:28:59,468 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 185 transitions, 2257 flow [2024-06-21 18:28:59,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:28:59,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:28:59,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:28:59,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 18:28:59,468 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 18:28:59,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:28:59,469 INFO L85 PathProgramCache]: Analyzing trace with hash 734895808, now seen corresponding path program 2 times [2024-06-21 18:28:59,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:28:59,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141931727] [2024-06-21 18:28:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:28:59,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:28:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:02,588 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 18:29:02,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:02,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141931727] [2024-06-21 18:29:02,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141931727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:02,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:02,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341818263] [2024-06-21 18:29:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:02,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:02,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:02,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:02,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 185 transitions, 2257 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:02,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:02,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:02,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:07,447 INFO L124 PetriNetUnfolderBase]: 16511/22366 cut-off events. [2024-06-21 18:29:07,447 INFO L125 PetriNetUnfolderBase]: For 294105/294131 co-relation queries the response was YES. [2024-06-21 18:29:07,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107176 conditions, 22366 events. 16511/22366 cut-off events. For 294105/294131 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 118455 event pairs, 6873 based on Foata normal form. 34/22396 useless extension candidates. Maximal degree in co-relation 107124. Up to 21301 conditions per place. [2024-06-21 18:29:07,575 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 113 selfloop transitions, 114 changer transitions 0/232 dead transitions. [2024-06-21 18:29:07,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 232 transitions, 3069 flow [2024-06-21 18:29:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 18:29:07,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48787061994609165 [2024-06-21 18:29:07,577 INFO L175 Difference]: Start difference. First operand has 114 places, 185 transitions, 2257 flow. Second operand 7 states and 181 transitions. [2024-06-21 18:29:07,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 232 transitions, 3069 flow [2024-06-21 18:29:07,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 232 transitions, 2853 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:07,745 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 2350 flow [2024-06-21 18:29:07,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2350, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-06-21 18:29:07,746 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-21 18:29:07,746 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 2350 flow [2024-06-21 18:29:07,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:07,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:07,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:07,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 18:29:07,746 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 18:29:07,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:07,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1835489104, now seen corresponding path program 3 times [2024-06-21 18:29:07,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:07,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481871436] [2024-06-21 18:29:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:07,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:10,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:10,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481871436] [2024-06-21 18:29:10,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481871436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:10,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:10,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:10,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130149663] [2024-06-21 18:29:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:10,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:10,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:10,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:10,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:10,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 2350 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:10,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:10,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:10,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:15,706 INFO L124 PetriNetUnfolderBase]: 16479/22304 cut-off events. [2024-06-21 18:29:15,707 INFO L125 PetriNetUnfolderBase]: For 323444/323474 co-relation queries the response was YES. [2024-06-21 18:29:15,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108819 conditions, 22304 events. 16479/22304 cut-off events. For 323444/323474 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 117880 event pairs, 6853 based on Foata normal form. 40/22340 useless extension candidates. Maximal degree in co-relation 108763. Up to 21274 conditions per place. [2024-06-21 18:29:15,837 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 109 selfloop transitions, 111 changer transitions 0/225 dead transitions. [2024-06-21 18:29:15,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 3025 flow [2024-06-21 18:29:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-21 18:29:15,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609164420485175 [2024-06-21 18:29:15,839 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 2350 flow. Second operand 7 states and 171 transitions. [2024-06-21 18:29:15,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 3025 flow [2024-06-21 18:29:16,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 225 transitions, 2841 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-21 18:29:16,029 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 2405 flow [2024-06-21 18:29:16,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-21 18:29:16,029 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-21 18:29:16,029 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 2405 flow [2024-06-21 18:29:16,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:16,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:16,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:16,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 18:29:16,030 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 18:29:16,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash -482646878, now seen corresponding path program 4 times [2024-06-21 18:29:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157708278] [2024-06-21 18:29:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157708278] [2024-06-21 18:29:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157708278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392627259] [2024-06-21 18:29:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:18,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:18,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:18,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:18,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:18,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:18,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:23,176 INFO L124 PetriNetUnfolderBase]: 16690/22637 cut-off events. [2024-06-21 18:29:23,177 INFO L125 PetriNetUnfolderBase]: For 357803/357825 co-relation queries the response was YES. [2024-06-21 18:29:23,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 22637 events. 16690/22637 cut-off events. For 357803/357825 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 120164 event pairs, 6847 based on Foata normal form. 26/22661 useless extension candidates. Maximal degree in co-relation 112219. Up to 21450 conditions per place. [2024-06-21 18:29:23,327 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 117 selfloop transitions, 143 changer transitions 0/265 dead transitions. [2024-06-21 18:29:23,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 265 transitions, 3643 flow [2024-06-21 18:29:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-21 18:29:23,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740566037735849 [2024-06-21 18:29:23,330 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 2405 flow. Second operand 8 states and 201 transitions. [2024-06-21 18:29:23,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 265 transitions, 3643 flow [2024-06-21 18:29:23,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 265 transitions, 3418 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:23,564 INFO L231 Difference]: Finished difference. Result has 129 places, 218 transitions, 3078 flow [2024-06-21 18:29:23,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=129, PETRI_TRANSITIONS=218} [2024-06-21 18:29:23,565 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 73 predicate places. [2024-06-21 18:29:23,565 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 218 transitions, 3078 flow [2024-06-21 18:29:23,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:23,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:23,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 18:29:23,566 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 18:29:23,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1760254672, now seen corresponding path program 5 times [2024-06-21 18:29:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737842514] [2024-06-21 18:29:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:26,234 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 18:29:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737842514] [2024-06-21 18:29:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737842514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:26,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27671694] [2024-06-21 18:29:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:26,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:26,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 218 transitions, 3078 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:26,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:30,875 INFO L124 PetriNetUnfolderBase]: 16852/22850 cut-off events. [2024-06-21 18:29:30,875 INFO L125 PetriNetUnfolderBase]: For 395804/395830 co-relation queries the response was YES. [2024-06-21 18:29:30,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116089 conditions, 22850 events. 16852/22850 cut-off events. For 395804/395830 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 121187 event pairs, 6826 based on Foata normal form. 30/22878 useless extension candidates. Maximal degree in co-relation 116027. Up to 21571 conditions per place. [2024-06-21 18:29:31,027 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 119 selfloop transitions, 154 changer transitions 0/278 dead transitions. [2024-06-21 18:29:31,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 4014 flow [2024-06-21 18:29:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-21 18:29:31,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2024-06-21 18:29:31,031 INFO L175 Difference]: Start difference. First operand has 129 places, 218 transitions, 3078 flow. Second operand 8 states and 196 transitions. [2024-06-21 18:29:31,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 4014 flow [2024-06-21 18:29:31,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 278 transitions, 3789 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:31,408 INFO L231 Difference]: Finished difference. Result has 134 places, 235 transitions, 3483 flow [2024-06-21 18:29:31,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3483, PETRI_PLACES=134, PETRI_TRANSITIONS=235} [2024-06-21 18:29:31,408 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-21 18:29:31,408 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 235 transitions, 3483 flow [2024-06-21 18:29:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:31,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:31,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:31,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 18:29:31,409 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 18:29:31,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 755372979, now seen corresponding path program 1 times [2024-06-21 18:29:31,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:31,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830897537] [2024-06-21 18:29:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:31,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 18:29:35,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:35,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830897537] [2024-06-21 18:29:35,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830897537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:35,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:35,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:35,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96040896] [2024-06-21 18:29:35,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:35,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:35,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-21 18:29:35,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 235 transitions, 3483 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:35,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:35,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-21 18:29:35,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:38,912 INFO L124 PetriNetUnfolderBase]: 14842/20657 cut-off events. [2024-06-21 18:29:38,912 INFO L125 PetriNetUnfolderBase]: For 389735/389737 co-relation queries the response was YES. [2024-06-21 18:29:38,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106047 conditions, 20657 events. 14842/20657 cut-off events. For 389735/389737 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 114698 event pairs, 6740 based on Foata normal form. 6/20641 useless extension candidates. Maximal degree in co-relation 105983. Up to 19986 conditions per place. [2024-06-21 18:29:39,079 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 236 selfloop transitions, 16 changer transitions 0/258 dead transitions. [2024-06-21 18:29:39,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 258 transitions, 4087 flow [2024-06-21 18:29:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 18:29:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 18:29:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-21 18:29:39,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39892183288409705 [2024-06-21 18:29:39,080 INFO L175 Difference]: Start difference. First operand has 134 places, 235 transitions, 3483 flow. Second operand 7 states and 148 transitions. [2024-06-21 18:29:39,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 258 transitions, 4087 flow [2024-06-21 18:29:39,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 258 transitions, 3898 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 18:29:39,402 INFO L231 Difference]: Finished difference. Result has 137 places, 239 transitions, 3387 flow [2024-06-21 18:29:39,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3387, PETRI_PLACES=137, PETRI_TRANSITIONS=239} [2024-06-21 18:29:39,403 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-06-21 18:29:39,403 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 239 transitions, 3387 flow [2024-06-21 18:29:39,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:39,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:39,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:39,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 18:29:39,403 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 18:29:39,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1361961401, now seen corresponding path program 1 times [2024-06-21 18:29:39,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:39,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015124422] [2024-06-21 18:29:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:39,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:42,794 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 18:29:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015124422] [2024-06-21 18:29:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015124422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:42,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:42,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181406853] [2024-06-21 18:29:42,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:42,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:42,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:42,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:42,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:42,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:42,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 239 transitions, 3387 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:42,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:42,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:42,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:48,028 INFO L124 PetriNetUnfolderBase]: 16867/22885 cut-off events. [2024-06-21 18:29:48,029 INFO L125 PetriNetUnfolderBase]: For 479168/479184 co-relation queries the response was YES. [2024-06-21 18:29:48,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121945 conditions, 22885 events. 16867/22885 cut-off events. For 479168/479184 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 122033 event pairs, 7696 based on Foata normal form. 22/22903 useless extension candidates. Maximal degree in co-relation 121880. Up to 22348 conditions per place. [2024-06-21 18:29:48,178 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 199 selfloop transitions, 70 changer transitions 0/274 dead transitions. [2024-06-21 18:29:48,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 274 transitions, 4083 flow [2024-06-21 18:29:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-21 18:29:48,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41745283018867924 [2024-06-21 18:29:48,180 INFO L175 Difference]: Start difference. First operand has 137 places, 239 transitions, 3387 flow. Second operand 8 states and 177 transitions. [2024-06-21 18:29:48,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 274 transitions, 4083 flow [2024-06-21 18:29:48,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 274 transitions, 4020 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 18:29:48,651 INFO L231 Difference]: Finished difference. Result has 140 places, 242 transitions, 3524 flow [2024-06-21 18:29:48,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3324, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3524, PETRI_PLACES=140, PETRI_TRANSITIONS=242} [2024-06-21 18:29:48,652 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-06-21 18:29:48,652 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 242 transitions, 3524 flow [2024-06-21 18:29:48,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:48,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:48,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:48,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 18:29:48,653 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 18:29:48,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1364818361, now seen corresponding path program 2 times [2024-06-21 18:29:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940855711] [2024-06-21 18:29:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:29:51,814 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 18:29:51,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:29:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940855711] [2024-06-21 18:29:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940855711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:29:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:29:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 18:29:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595141591] [2024-06-21 18:29:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:29:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 18:29:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:29:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 18:29:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 18:29:51,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:29:51,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 242 transitions, 3524 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:51,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:29:51,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:29:51,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:29:56,548 INFO L124 PetriNetUnfolderBase]: 16976/23041 cut-off events. [2024-06-21 18:29:56,548 INFO L125 PetriNetUnfolderBase]: For 525883/525911 co-relation queries the response was YES. [2024-06-21 18:29:56,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126480 conditions, 23041 events. 16976/23041 cut-off events. For 525883/525911 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 122964 event pairs, 7685 based on Foata normal form. 34/23071 useless extension candidates. Maximal degree in co-relation 126414. Up to 22381 conditions per place. [2024-06-21 18:29:56,704 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 208 selfloop transitions, 69 changer transitions 0/282 dead transitions. [2024-06-21 18:29:56,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 282 transitions, 4244 flow [2024-06-21 18:29:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 18:29:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 18:29:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-21 18:29:56,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419811320754717 [2024-06-21 18:29:56,705 INFO L175 Difference]: Start difference. First operand has 140 places, 242 transitions, 3524 flow. Second operand 8 states and 178 transitions. [2024-06-21 18:29:56,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 282 transitions, 4244 flow [2024-06-21 18:29:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 282 transitions, 4074 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 18:29:57,104 INFO L231 Difference]: Finished difference. Result has 143 places, 249 transitions, 3593 flow [2024-06-21 18:29:57,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3593, PETRI_PLACES=143, PETRI_TRANSITIONS=249} [2024-06-21 18:29:57,105 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2024-06-21 18:29:57,105 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 249 transitions, 3593 flow [2024-06-21 18:29:57,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:29:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:29:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:29:57,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 18:29:57,106 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 18:29:57,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:29:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1246485533, now seen corresponding path program 1 times [2024-06-21 18:29:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:29:57,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416123070] [2024-06-21 18:29:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:29:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:29:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:01,695 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 18:30:01,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:01,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416123070] [2024-06-21 18:30:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416123070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:01,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 18:30:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117186461] [2024-06-21 18:30:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 18:30:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 18:30:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 18:30:01,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:30:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 249 transitions, 3593 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:01,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:30:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:06,959 INFO L124 PetriNetUnfolderBase]: 17176/23340 cut-off events. [2024-06-21 18:30:06,959 INFO L125 PetriNetUnfolderBase]: For 593100/593116 co-relation queries the response was YES. [2024-06-21 18:30:07,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131887 conditions, 23340 events. 17176/23340 cut-off events. For 593100/593116 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 125387 event pairs, 6260 based on Foata normal form. 50/23386 useless extension candidates. Maximal degree in co-relation 131819. Up to 21751 conditions per place. [2024-06-21 18:30:07,370 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 137 selfloop transitions, 157 changer transitions 0/299 dead transitions. [2024-06-21 18:30:07,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 299 transitions, 4409 flow [2024-06-21 18:30:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 18:30:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 18:30:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-21 18:30:07,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360587002096436 [2024-06-21 18:30:07,372 INFO L175 Difference]: Start difference. First operand has 143 places, 249 transitions, 3593 flow. Second operand 9 states and 208 transitions. [2024-06-21 18:30:07,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 299 transitions, 4409 flow [2024-06-21 18:30:07,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 299 transitions, 4246 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 18:30:07,749 INFO L231 Difference]: Finished difference. Result has 147 places, 252 transitions, 3819 flow [2024-06-21 18:30:07,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3819, PETRI_PLACES=147, PETRI_TRANSITIONS=252} [2024-06-21 18:30:07,750 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 91 predicate places. [2024-06-21 18:30:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 252 transitions, 3819 flow [2024-06-21 18:30:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:07,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:07,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:07,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 18:30:07,750 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:30:07,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1930285390, now seen corresponding path program 1 times [2024-06-21 18:30:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729068963] [2024-06-21 18:30:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:10,136 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 18:30:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729068963] [2024-06-21 18:30:10,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729068963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:10,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:10,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 18:30:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778465401] [2024-06-21 18:30:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:10,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 18:30:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 18:30:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 18:30:10,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:30:10,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 252 transitions, 3819 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:10,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:10,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:30:10,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:15,061 INFO L124 PetriNetUnfolderBase]: 17192/23369 cut-off events. [2024-06-21 18:30:15,061 INFO L125 PetriNetUnfolderBase]: For 628249/628261 co-relation queries the response was YES. [2024-06-21 18:30:15,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136805 conditions, 23369 events. 17192/23369 cut-off events. For 628249/628261 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 125581 event pairs, 7469 based on Foata normal form. 14/23380 useless extension candidates. Maximal degree in co-relation 136736. Up to 23121 conditions per place. [2024-06-21 18:30:15,224 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 249 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-21 18:30:15,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 279 transitions, 4527 flow [2024-06-21 18:30:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 18:30:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 18:30:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-21 18:30:15,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276729559748428 [2024-06-21 18:30:15,226 INFO L175 Difference]: Start difference. First operand has 147 places, 252 transitions, 3819 flow. Second operand 6 states and 136 transitions. [2024-06-21 18:30:15,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 279 transitions, 4527 flow [2024-06-21 18:30:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 4129 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 18:30:15,608 INFO L231 Difference]: Finished difference. Result has 146 places, 257 transitions, 3569 flow [2024-06-21 18:30:15,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3569, PETRI_PLACES=146, PETRI_TRANSITIONS=257} [2024-06-21 18:30:15,609 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2024-06-21 18:30:15,609 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 257 transitions, 3569 flow [2024-06-21 18:30:15,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 18:30:15,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:15,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:15,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 18:30:15,609 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 18:30:15,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash -40055051, now seen corresponding path program 2 times [2024-06-21 18:30:15,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:15,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132757275] [2024-06-21 18:30:15,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:15,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 18:30:20,391 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 18:30:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 18:30:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132757275] [2024-06-21 18:30:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132757275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 18:30:20,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 18:30:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 18:30:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865567172] [2024-06-21 18:30:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 18:30:20,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 18:30:20,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 18:30:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 18:30:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-21 18:30:20,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2024-06-21 18:30:20,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 257 transitions, 3569 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 18:30:20,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 18:30:20,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2024-06-21 18:30:20,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 18:30:26,356 INFO L124 PetriNetUnfolderBase]: 17406/23618 cut-off events. [2024-06-21 18:30:26,356 INFO L125 PetriNetUnfolderBase]: For 678475/678487 co-relation queries the response was YES. [2024-06-21 18:30:26,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141846 conditions, 23618 events. 17406/23618 cut-off events. For 678475/678487 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 126296 event pairs, 6601 based on Foata normal form. 18/23621 useless extension candidates. Maximal degree in co-relation 141776. Up to 22174 conditions per place. [2024-06-21 18:30:26,543 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 134 selfloop transitions, 211 changer transitions 0/350 dead transitions. [2024-06-21 18:30:26,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 350 transitions, 5132 flow [2024-06-21 18:30:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 18:30:26,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 18:30:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-06-21 18:30:26,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41509433962264153 [2024-06-21 18:30:26,545 INFO L175 Difference]: Start difference. First operand has 146 places, 257 transitions, 3569 flow. Second operand 11 states and 242 transitions. [2024-06-21 18:30:26,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 350 transitions, 5132 flow [2024-06-21 18:30:27,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 350 transitions, 4966 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-21 18:30:27,100 INFO L231 Difference]: Finished difference. Result has 157 places, 298 transitions, 4598 flow [2024-06-21 18:30:27,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4598, PETRI_PLACES=157, PETRI_TRANSITIONS=298} [2024-06-21 18:30:27,101 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2024-06-21 18:30:27,101 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 298 transitions, 4598 flow [2024-06-21 18:30:27,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 18:30:27,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 18:30:27,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 18:30:27,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 18:30:27,102 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 18:30:27,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 18:30:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash -31714811, now seen corresponding path program 3 times [2024-06-21 18:30:27,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 18:30:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522806523] [2024-06-21 18:30:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 18:30:27,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 18:30:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat