./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix004.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix004.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:33:15,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:33:15,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:33:15,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:33:15,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:33:15,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:33:15,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:33:15,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:33:15,800 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:33:15,803 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:33:15,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:33:15,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:33:15,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:33:15,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:33:15,806 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:33:15,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:33:15,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:33:15,807 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:33:15,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:33:15,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:33:15,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:33:15,808 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:33:15,809 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:33:15,809 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:33:15,809 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:33:15,809 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:33:15,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:33:15,810 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:33:15,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:33:15,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:33:15,811 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:33:15,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:33:15,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:15,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:33:15,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:33:15,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:33:15,813 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:33:15,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:33:15,813 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:33:15,813 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:33:15,813 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:33:15,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:33:15,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:33:15,814 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:33:16,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:33:16,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:33:16,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:33:16,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:33:16,101 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:33:16,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-01-31 17:33:17,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:33:17,386 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:33:17,387 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i [2024-01-31 17:33:17,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245b77e3b/c494490cbd354d6889b9a91fa4be7fb7/FLAGb573f4bc8 [2024-01-31 17:33:17,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245b77e3b/c494490cbd354d6889b9a91fa4be7fb7 [2024-01-31 17:33:17,414 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:33:17,415 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:33:17,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix004.oepc.yml/witness.yml [2024-01-31 17:33:18,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:33:18,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:33:18,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:18,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:33:18,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:33:18,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:17" (1/2) ... [2024-01-31 17:33:18,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b92a67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:18, skipping insertion in model container [2024-01-31 17:33:18,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:33:17" (1/2) ... [2024-01-31 17:33:18,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f5b6a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:33:18, skipping insertion in model container [2024-01-31 17:33:18,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:18" (2/2) ... [2024-01-31 17:33:18,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b92a67e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:18, skipping insertion in model container [2024-01-31 17:33:18,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:18" (2/2) ... [2024-01-31 17:33:18,169 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:33:20,606 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:33:20,607 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:33:20,608 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:33:20,636 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:33:20,764 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i[945,958] [2024-01-31 17:33:20,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:20,924 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:33:20,933 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix004.oepc.i[945,958] Start Parsing Local [2024-01-31 17:33:20,950 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:33:20,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:33:21,021 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:33:21,022 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21 WrapperNode [2024-01-31 17:33:21,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:33:21,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:21,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:33:21,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:33:21,031 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 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,065 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 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,096 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-01-31 17:33:21,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:33:21,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:33:21,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:33:21,099 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:33:21,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,123 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,150 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:33:21,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:33:21,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:33:21,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:33:21,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:33:21,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (1/1) ... [2024-01-31 17:33:21,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:33:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:33:21,221 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) [2024-01-31 17:33:21,225 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 [2024-01-31 17:33:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:33:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:33:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:33:21,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:33:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:33:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:33:21,253 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:33:21,253 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:33:21,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:33:21,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:33:21,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:33:21,255 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:33:21,379 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:33:21,382 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:33:21,660 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:33:21,660 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:33:21,809 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:33:21,809 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:33:21,810 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:21 BoogieIcfgContainer [2024-01-31 17:33:21,810 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:33:21,811 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:33:21,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:33:21,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:33:21,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:33:17" (1/4) ... [2024-01-31 17:33:21,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b77b136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:33:21, skipping insertion in model container [2024-01-31 17:33:21,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:33:18" (2/4) ... [2024-01-31 17:33:21,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b77b136 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:33:21, skipping insertion in model container [2024-01-31 17:33:21,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:33:21" (3/4) ... [2024-01-31 17:33:21,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b77b136 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:33:21, skipping insertion in model container [2024-01-31 17:33:21,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:33:21" (4/4) ... [2024-01-31 17:33:21,819 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2024-01-31 17:33:21,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:33:21,835 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:33:21,835 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:33:21,891 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:33:21,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:21,951 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:33:21,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:21,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 17:33:21,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:33:21,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:33:21,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:33:22,008 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;@5c51b142, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:33:22,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:33:22,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:33:22,016 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:33:22,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:22,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:22,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:33:22,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:22,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash 12737626, now seen corresponding path program 1 times [2024-01-31 17:33:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332726570] [2024-01-31 17:33:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:22,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332726570] [2024-01-31 17:33:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332726570] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:22,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531747160] [2024-01-31 17:33:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:22,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:33:22,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:33:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:33:22,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:33:22,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:22,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:22,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:33:22,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:23,015 INFO L124 PetriNetUnfolderBase]: 3179/5523 cut-off events. [2024-01-31 17:33:23,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:23,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 5523 events. 3179/5523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41566 event pairs, 3179 based on Foata normal form. 135/5018 useless extension candidates. Maximal degree in co-relation 10039. Up to 4391 conditions per place. [2024-01-31 17:33:23,070 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:33:23,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:33:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:33:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:33:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:33:23,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:33:23,084 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:33:23,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:33:23,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 150 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:33:23,094 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:23,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-01-31 17:33:23,100 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:33:23,100 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:33:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:23,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:23,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:33:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:33:23,101 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:23,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash 12737627, now seen corresponding path program 1 times [2024-01-31 17:33:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965205456] [2024-01-31 17:33:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:23,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:23,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965205456] [2024-01-31 17:33:23,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965205456] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:23,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:23,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:33:23,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411005934] [2024-01-31 17:33:23,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:23,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:23,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:23,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:23,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:23,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:33:23,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:23,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:23,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:33:23,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:23,749 INFO L124 PetriNetUnfolderBase]: 2495/4175 cut-off events. [2024-01-31 17:33:23,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:33:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 4175 events. 2495/4175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29609 event pairs, 443 based on Foata normal form. 0/4076 useless extension candidates. Maximal degree in co-relation 7745. Up to 2779 conditions per place. [2024-01-31 17:33:23,773 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:33:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:33:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:23,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:33:23,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:33:23,792 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:33:23,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:33:23,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:33:23,799 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:23,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-01-31 17:33:23,800 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:33:23,800 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:33:23,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:23,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:23,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:23,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:33:23,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:23,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash 311976735, now seen corresponding path program 1 times [2024-01-31 17:33:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267937259] [2024-01-31 17:33:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267937259] [2024-01-31 17:33:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267937259] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:33:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314814525] [2024-01-31 17:33:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:33:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:33:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:33:23,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:33:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:33:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:24,345 INFO L124 PetriNetUnfolderBase]: 3311/5223 cut-off events. [2024-01-31 17:33:24,346 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:33:24,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 5223 events. 3311/5223 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 35543 event pairs, 2495 based on Foata normal form. 0/4940 useless extension candidates. Maximal degree in co-relation 10212. Up to 3465 conditions per place. [2024-01-31 17:33:24,373 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:33:24,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:33:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:33:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:33:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:33:24,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:33:24,375 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:33:24,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:33:24,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:33:24,377 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:24,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-01-31 17:33:24,377 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:33:24,378 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:33:24,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:24,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:24,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:24,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:33:24,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:24,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1081344619, now seen corresponding path program 1 times [2024-01-31 17:33:24,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:24,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666467504] [2024-01-31 17:33:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:24,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:24,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666467504] [2024-01-31 17:33:24,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666467504] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:24,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644250360] [2024-01-31 17:33:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:24,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:24,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:33:24,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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) [2024-01-31 17:33:24,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:24,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:33:24,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:26,571 INFO L124 PetriNetUnfolderBase]: 15261/21964 cut-off events. [2024-01-31 17:33:26,571 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-01-31 17:33:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43222 conditions, 21964 events. 15261/21964 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 146330 event pairs, 10447 based on Foata normal form. 500/22428 useless extension candidates. Maximal degree in co-relation 43218. Up to 16823 conditions per place. [2024-01-31 17:33:26,692 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 39 selfloop transitions, 5 changer transitions 43/100 dead transitions. [2024-01-31 17:33:26,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 390 flow [2024-01-31 17:33:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-01-31 17:33:26,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606469002695418 [2024-01-31 17:33:26,699 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 208 transitions. [2024-01-31 17:33:26,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 390 flow [2024-01-31 17:33:26,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 100 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:26,760 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 152 flow [2024-01-31 17:33:26,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=7, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-01-31 17:33:26,762 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:33:26,763 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 152 flow [2024-01-31 17:33:26,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 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) [2024-01-31 17:33:26,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:26,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:26,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:33:26,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:26,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1224431599, now seen corresponding path program 1 times [2024-01-31 17:33:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:26,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388637478] [2024-01-31 17:33:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:27,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:27,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388637478] [2024-01-31 17:33:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388637478] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448931191] [2024-01-31 17:33:27,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:27,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:33:27,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:27,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:27,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:33:27,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:28,782 INFO L124 PetriNetUnfolderBase]: 13983/19942 cut-off events. [2024-01-31 17:33:28,782 INFO L125 PetriNetUnfolderBase]: For 18580/18590 co-relation queries the response was YES. [2024-01-31 17:33:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53508 conditions, 19942 events. 13983/19942 cut-off events. For 18580/18590 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 127684 event pairs, 2413 based on Foata normal form. 490/20340 useless extension candidates. Maximal degree in co-relation 53499. Up to 13121 conditions per place. [2024-01-31 17:33:28,906 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 45 selfloop transitions, 3 changer transitions 55/116 dead transitions. [2024-01-31 17:33:28,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 116 transitions, 608 flow [2024-01-31 17:33:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 17:33:28,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5929919137466307 [2024-01-31 17:33:28,908 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 152 flow. Second operand 7 states and 220 transitions. [2024-01-31 17:33:28,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 116 transitions, 608 flow [2024-01-31 17:33:29,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 116 transitions, 595 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 17:33:29,034 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 162 flow [2024-01-31 17:33:29,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-01-31 17:33:29,035 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:33:29,035 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 162 flow [2024-01-31 17:33:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:29,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:29,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:33:29,036 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:29,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash 671966106, now seen corresponding path program 1 times [2024-01-31 17:33:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580873379] [2024-01-31 17:33:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:29,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:29,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580873379] [2024-01-31 17:33:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580873379] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:29,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:29,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:29,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747530974] [2024-01-31 17:33:29,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:29,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:29,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:29,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-01-31 17:33:29,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:29,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:29,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-01-31 17:33:29,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:30,440 INFO L124 PetriNetUnfolderBase]: 8189/12848 cut-off events. [2024-01-31 17:33:30,440 INFO L125 PetriNetUnfolderBase]: For 9544/9864 co-relation queries the response was YES. [2024-01-31 17:33:30,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31368 conditions, 12848 events. 8189/12848 cut-off events. For 9544/9864 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 90458 event pairs, 1727 based on Foata normal form. 320/12776 useless extension candidates. Maximal degree in co-relation 31356. Up to 7702 conditions per place. [2024-01-31 17:33:30,537 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 37 selfloop transitions, 3 changer transitions 41/101 dead transitions. [2024-01-31 17:33:30,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 101 transitions, 462 flow [2024-01-31 17:33:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:33:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:33:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-01-31 17:33:30,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6172506738544474 [2024-01-31 17:33:30,539 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 162 flow. Second operand 7 states and 229 transitions. [2024-01-31 17:33:30,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 101 transitions, 462 flow [2024-01-31 17:33:30,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 440 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 17:33:30,627 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 167 flow [2024-01-31 17:33:30,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2024-01-31 17:33:30,627 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-01-31 17:33:30,628 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 167 flow [2024-01-31 17:33:30,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:30,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:30,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:30,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:33:30,629 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:30,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -751975452, now seen corresponding path program 1 times [2024-01-31 17:33:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310896663] [2024-01-31 17:33:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:30,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:30,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:30,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310896663] [2024-01-31 17:33:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310896663] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:33:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476003519] [2024-01-31 17:33:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:33:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:33:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:33:30,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:30,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:30,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:30,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:30,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:32,282 INFO L124 PetriNetUnfolderBase]: 12790/19656 cut-off events. [2024-01-31 17:33:32,282 INFO L125 PetriNetUnfolderBase]: For 8613/8946 co-relation queries the response was YES. [2024-01-31 17:33:32,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44288 conditions, 19656 events. 12790/19656 cut-off events. For 8613/8946 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 142514 event pairs, 2080 based on Foata normal form. 687/19594 useless extension candidates. Maximal degree in co-relation 44275. Up to 9086 conditions per place. [2024-01-31 17:33:32,466 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2024-01-31 17:33:32,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 355 flow [2024-01-31 17:33:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:33:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:33:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:33:32,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:33:32,468 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 167 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:33:32,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 355 flow [2024-01-31 17:33:32,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 341 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 17:33:32,799 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 199 flow [2024-01-31 17:33:32,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-01-31 17:33:32,800 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-01-31 17:33:32,800 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 199 flow [2024-01-31 17:33:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:32,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:32,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:33:32,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:32,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1932827963, now seen corresponding path program 1 times [2024-01-31 17:33:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676844431] [2024-01-31 17:33:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:32,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:32,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676844431] [2024-01-31 17:33:32,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676844431] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:32,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:32,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:33:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409716361] [2024-01-31 17:33:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:33:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:33:32,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:33:32,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:32,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:32,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:32,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:32,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:34,279 INFO L124 PetriNetUnfolderBase]: 10872/16606 cut-off events. [2024-01-31 17:33:34,279 INFO L125 PetriNetUnfolderBase]: For 6210/6386 co-relation queries the response was YES. [2024-01-31 17:33:34,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40333 conditions, 16606 events. 10872/16606 cut-off events. For 6210/6386 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 114915 event pairs, 1313 based on Foata normal form. 602/16528 useless extension candidates. Maximal degree in co-relation 40322. Up to 5576 conditions per place. [2024-01-31 17:33:34,385 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 69 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2024-01-31 17:33:34,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 99 transitions, 480 flow [2024-01-31 17:33:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:33:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:33:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:33:34,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:33:34,387 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 199 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:33:34,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 99 transitions, 480 flow [2024-01-31 17:33:34,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:33:34,391 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 264 flow [2024-01-31 17:33:34,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-01-31 17:33:34,391 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-01-31 17:33:34,392 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 264 flow [2024-01-31 17:33:34,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:34,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:34,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:34,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:33:34,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:34,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1649769803, now seen corresponding path program 1 times [2024-01-31 17:33:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940903968] [2024-01-31 17:33:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940903968] [2024-01-31 17:33:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940903968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:34,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:33:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532970018] [2024-01-31 17:33:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:34,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:34,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:34,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:34,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:34,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:35,940 INFO L124 PetriNetUnfolderBase]: 8800/13106 cut-off events. [2024-01-31 17:33:35,940 INFO L125 PetriNetUnfolderBase]: For 12646/12718 co-relation queries the response was YES. [2024-01-31 17:33:35,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35662 conditions, 13106 events. 8800/13106 cut-off events. For 12646/12718 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 83827 event pairs, 1007 based on Foata normal form. 364/12840 useless extension candidates. Maximal degree in co-relation 35649. Up to 4412 conditions per place. [2024-01-31 17:33:36,158 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 83 selfloop transitions, 14 changer transitions 0/117 dead transitions. [2024-01-31 17:33:36,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 117 transitions, 627 flow [2024-01-31 17:33:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:33:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:33:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:33:36,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:33:36,161 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 264 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:33:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 117 transitions, 627 flow [2024-01-31 17:33:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 611 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:33:36,172 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 334 flow [2024-01-31 17:33:36,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-01-31 17:33:36,173 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 14 predicate places. [2024-01-31 17:33:36,173 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 334 flow [2024-01-31 17:33:36,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:36,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:33:36,174 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:36,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1604396524, now seen corresponding path program 1 times [2024-01-31 17:33:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273263773] [2024-01-31 17:33:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:36,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273263773] [2024-01-31 17:33:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273263773] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:37,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:37,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:33:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069542099] [2024-01-31 17:33:37,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:33:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:33:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:33:37,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:33:37,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 334 flow. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:33:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:39,525 INFO L124 PetriNetUnfolderBase]: 15699/25192 cut-off events. [2024-01-31 17:33:39,525 INFO L125 PetriNetUnfolderBase]: For 43915/46718 co-relation queries the response was YES. [2024-01-31 17:33:39,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75628 conditions, 25192 events. 15699/25192 cut-off events. For 43915/46718 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 196141 event pairs, 5033 based on Foata normal form. 604/24112 useless extension candidates. Maximal degree in co-relation 75613. Up to 7282 conditions per place. [2024-01-31 17:33:39,714 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 121 selfloop transitions, 18 changer transitions 33/200 dead transitions. [2024-01-31 17:33:39,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 200 transitions, 1175 flow [2024-01-31 17:33:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 17:33:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 17:33:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 378 transitions. [2024-01-31 17:33:39,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943396226415094 [2024-01-31 17:33:39,716 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 334 flow. Second operand 12 states and 378 transitions. [2024-01-31 17:33:39,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 200 transitions, 1175 flow [2024-01-31 17:33:39,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 200 transitions, 1144 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-31 17:33:39,887 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 436 flow [2024-01-31 17:33:39,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-01-31 17:33:39,887 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 29 predicate places. [2024-01-31 17:33:39,888 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 436 flow [2024-01-31 17:33:39,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:39,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:39,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:39,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:33:39,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:39,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:39,889 INFO L85 PathProgramCache]: Analyzing trace with hash 952035028, now seen corresponding path program 2 times [2024-01-31 17:33:39,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:39,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267560942] [2024-01-31 17:33:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:40,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267560942] [2024-01-31 17:33:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267560942] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:40,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:40,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:33:40,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179128809] [2024-01-31 17:33:40,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:40,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:33:40,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:33:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:33:40,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-01-31 17:33:40,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:40,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:40,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-01-31 17:33:40,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:42,949 INFO L124 PetriNetUnfolderBase]: 20782/35193 cut-off events. [2024-01-31 17:33:42,949 INFO L125 PetriNetUnfolderBase]: For 51967/60136 co-relation queries the response was YES. [2024-01-31 17:33:43,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105133 conditions, 35193 events. 20782/35193 cut-off events. For 51967/60136 co-relation queries the response was YES. Maximal size of possible extension queue 2112. Compared 310488 event pairs, 4283 based on Foata normal form. 1051/32929 useless extension candidates. Maximal degree in co-relation 105111. Up to 13351 conditions per place. [2024-01-31 17:33:43,306 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 67 selfloop transitions, 3 changer transitions 26/136 dead transitions. [2024-01-31 17:33:43,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 900 flow [2024-01-31 17:33:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:33:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:33:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-01-31 17:33:43,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6194968553459119 [2024-01-31 17:33:43,307 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 436 flow. Second operand 6 states and 197 transitions. [2024-01-31 17:33:43,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 900 flow [2024-01-31 17:33:43,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 869 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 17:33:43,568 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 443 flow [2024-01-31 17:33:43,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-01-31 17:33:43,568 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-01-31 17:33:43,568 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 443 flow [2024-01-31 17:33:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:43,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:43,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:43,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:33:43,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:43,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1936028460, now seen corresponding path program 3 times [2024-01-31 17:33:43,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:43,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642532136] [2024-01-31 17:33:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:43,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:44,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:44,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642532136] [2024-01-31 17:33:44,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642532136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:44,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:44,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:33:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948479503] [2024-01-31 17:33:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:44,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:33:44,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:33:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:33:44,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:44,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 443 flow. Second operand has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:44,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:44,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:44,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:33:51,318 INFO L124 PetriNetUnfolderBase]: 37148/63446 cut-off events. [2024-01-31 17:33:51,318 INFO L125 PetriNetUnfolderBase]: For 82643/92867 co-relation queries the response was YES. [2024-01-31 17:33:51,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182620 conditions, 63446 events. 37148/63446 cut-off events. For 82643/92867 co-relation queries the response was YES. Maximal size of possible extension queue 4680. Compared 633275 event pairs, 13152 based on Foata normal form. 1572/58531 useless extension candidates. Maximal degree in co-relation 182596. Up to 20269 conditions per place. [2024-01-31 17:33:51,839 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 72 selfloop transitions, 17 changer transitions 20/153 dead transitions. [2024-01-31 17:33:51,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 153 transitions, 979 flow [2024-01-31 17:33:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 17:33:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 17:33:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2024-01-31 17:33:51,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6331236897274634 [2024-01-31 17:33:51,842 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 443 flow. Second operand 9 states and 302 transitions. [2024-01-31 17:33:51,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 153 transitions, 979 flow [2024-01-31 17:33:52,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 153 transitions, 964 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 17:33:52,599 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 554 flow [2024-01-31 17:33:52,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=554, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-01-31 17:33:52,600 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 38 predicate places. [2024-01-31 17:33:52,600 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 554 flow [2024-01-31 17:33:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:52,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:33:52,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:33:52,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:33:52,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:33:52,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:33:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash -678390902, now seen corresponding path program 4 times [2024-01-31 17:33:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:33:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445240029] [2024-01-31 17:33:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:33:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:33:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:33:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:33:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:33:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445240029] [2024-01-31 17:33:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445240029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:33:52,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:33:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:33:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442890797] [2024-01-31 17:33:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:33:52,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:33:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:33:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:33:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:33:52,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:33:52,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 554 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:33:52,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:33:52,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:33:52,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:34:01,251 INFO L124 PetriNetUnfolderBase]: 62612/93110 cut-off events. [2024-01-31 17:34:01,251 INFO L125 PetriNetUnfolderBase]: For 194213/197353 co-relation queries the response was YES. [2024-01-31 17:34:01,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311801 conditions, 93110 events. 62612/93110 cut-off events. For 194213/197353 co-relation queries the response was YES. Maximal size of possible extension queue 4124. Compared 744203 event pairs, 4240 based on Foata normal form. 1803/93159 useless extension candidates. Maximal degree in co-relation 311774. Up to 33710 conditions per place. [2024-01-31 17:34:01,860 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 108 selfloop transitions, 18 changer transitions 17/168 dead transitions. [2024-01-31 17:34:01,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 168 transitions, 1254 flow [2024-01-31 17:34:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:34:01,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:34:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-01-31 17:34:01,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711590296495957 [2024-01-31 17:34:01,862 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 554 flow. Second operand 7 states and 249 transitions. [2024-01-31 17:34:01,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 168 transitions, 1254 flow [2024-01-31 17:34:07,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 168 transitions, 1180 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-01-31 17:34:07,837 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 513 flow [2024-01-31 17:34:07,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=513, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2024-01-31 17:34:07,838 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 39 predicate places. [2024-01-31 17:34:07,838 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 513 flow [2024-01-31 17:34:07,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:07,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:34:07,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:34:07,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:34:07,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:34:07,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:34:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2054807377, now seen corresponding path program 1 times [2024-01-31 17:34:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:34:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125380886] [2024-01-31 17:34:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:34:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:34:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:34:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:34:08,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:34:08,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125380886] [2024-01-31 17:34:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125380886] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:34:08,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:34:08,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:34:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42082517] [2024-01-31 17:34:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:34:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:34:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:34:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:34:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:34:08,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:34:08,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:34:08,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:34:08,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:34:08,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand