./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.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/mix043.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/mix043.oepc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix043.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 17:38:29,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:38:29,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:38:29,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:38:29,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:38:29,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:38:29,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:38:29,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:38:29,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:38:29,442 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:38:29,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:38:29,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:38:29,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:38:29,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:38:29,444 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:38:29,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:38:29,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:38:29,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:38:29,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:38:29,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:38:29,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:38:29,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:38:29,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:38:29,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:38:29,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:38:29,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:38:29,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:38:29,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:38:29,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:38:29,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:38:29,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:38:29,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:38:29,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:29,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:38:29,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:38:29,452 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:38:29,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:38:29,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:38:29,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:38:29,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:38:29,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:38:29,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:38:29,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:38:29,708 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:38:29,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.oepc.i [2024-01-31 17:38:30,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:38:31,084 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:38:31,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.oepc.i [2024-01-31 17:38:31,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eee5cbfa/bd2af43ca6c94ede93e7c1328121e1a8/FLAGeb6524076 [2024-01-31 17:38:31,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6eee5cbfa/bd2af43ca6c94ede93e7c1328121e1a8 [2024-01-31 17:38:31,119 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:38:31,119 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:38:31,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix043.oepc.yml/witness.yml [2024-01-31 17:38:32,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:38:32,011 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:38:32,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:32,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:38:32,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:38:32,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:31" (1/2) ... [2024-01-31 17:38:32,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccfdeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:32, skipping insertion in model container [2024-01-31 17:38:32,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:38:31" (1/2) ... [2024-01-31 17:38:32,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ccdabfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:38:32, skipping insertion in model container [2024-01-31 17:38:32,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:32" (2/2) ... [2024-01-31 17:38:32,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccfdeb3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:32, skipping insertion in model container [2024-01-31 17:38:32,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:32" (2/2) ... [2024-01-31 17:38:32,023 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:38:34,558 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:38:34,562 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:38:34,562 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:38:34,603 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:38:34,742 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/mix043.oepc.i[945,958] [2024-01-31 17:38:34,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:34,900 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:38:34,917 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/mix043.oepc.i[945,958] Start Parsing Local [2024-01-31 17:38:34,935 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:38:35,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:38:35,050 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:38:35,051 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:38:35 WrapperNode [2024-01-31 17:38:35,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:38:35,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:35,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:38:35,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:38:35,058 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,078 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,107 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 147 [2024-01-31 17:38:35,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:38:35,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:38:35,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:38:35,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:38:35,133 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,134 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,136 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,152 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 17:38:35,152 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,152 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,158 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,160 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,162 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,163 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:38:35,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:38:35,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:38:35,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:38:35,167 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 05:38:35" (1/1) ... [2024-01-31 17:38:35,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:38:35,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:38:35,201 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 17:38:35,215 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 17:38:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:38:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:38:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:38:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:38:35,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:38:35,243 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:38:35,243 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:38:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:38:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:38:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:38:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:38:35,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:38:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:38:35,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:38:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:38:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:38:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:38:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:38:35,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:38:35,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:38:35,247 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 17:38:35,387 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:38:35,389 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:38:35,607 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:38:35,608 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:38:35,726 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:38:35,727 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:38:35,727 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:35 BoogieIcfgContainer [2024-01-31 17:38:35,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:38:35,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:38:35,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:38:35,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:38:35,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:38:31" (1/4) ... [2024-01-31 17:38:35,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf066bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:38:35, skipping insertion in model container [2024-01-31 17:38:35,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:38:32" (2/4) ... [2024-01-31 17:38:35,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf066bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:35, skipping insertion in model container [2024-01-31 17:38:35,733 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 05:38:35" (3/4) ... [2024-01-31 17:38:35,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf066bd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:38:35, skipping insertion in model container [2024-01-31 17:38:35,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:38:35" (4/4) ... [2024-01-31 17:38:35,734 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.oepc.i [2024-01-31 17:38:35,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:38:35,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:38:35,749 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:38:35,785 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:38:35,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:35,831 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-01-31 17:38:35,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:35,835 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 17:38:35,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 53 transitions, 122 flow [2024-01-31 17:38:35,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 49 transitions, 110 flow [2024-01-31 17:38:35,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:38:35,851 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;@771454ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:38:35,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:38:35,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:38:35,855 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-31 17:38:35,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:35,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:35,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:35,856 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 17:38:35,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 12676058, now seen corresponding path program 1 times [2024-01-31 17:38:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:35,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729261064] [2024-01-31 17:38:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:36,003 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 17:38:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729261064] [2024-01-31 17:38:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729261064] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:36,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:36,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356861027] [2024-01-31 17:38:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:38:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:38:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:38:36,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:36,054 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 17:38:36,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:36,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:36,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:36,844 INFO L124 PetriNetUnfolderBase]: 3179/5553 cut-off events. [2024-01-31 17:38:36,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:36,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 5553 events. 3179/5553 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 41356 event pairs, 3179 based on Foata normal form. 135/5024 useless extension candidates. Maximal degree in co-relation 10069. Up to 4391 conditions per place. [2024-01-31 17:38:36,876 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 24 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-01-31 17:38:36,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:38:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:38:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:38:36,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2024-01-31 17:38:36,887 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 110 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:38:36,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 154 flow [2024-01-31 17:38:36,891 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 17:38:36,892 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:36,894 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 17:38:36,896 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-01-31 17:38:36,896 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 102 flow [2024-01-31 17:38:36,896 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 17:38:36,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:36,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 17:38:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:38:36,897 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 17:38:36,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash 12676059, now seen corresponding path program 1 times [2024-01-31 17:38:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702344464] [2024-01-31 17:38:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:37,040 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 17:38:37,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702344464] [2024-01-31 17:38:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702344464] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:37,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:37,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:38:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688688839] [2024-01-31 17:38:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:37,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:37,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:37,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-01-31 17:38:37,045 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 17:38:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-01-31 17:38:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:37,556 INFO L124 PetriNetUnfolderBase]: 2495/4181 cut-off events. [2024-01-31 17:38:37,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:38:37,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 4181 events. 2495/4181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29261 event pairs, 443 based on Foata normal form. 0/4072 useless extension candidates. Maximal degree in co-relation 7751. Up to 2779 conditions per place. [2024-01-31 17:38:37,581 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 37 selfloop transitions, 2 changer transitions 2/64 dead transitions. [2024-01-31 17:38:37,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-01-31 17:38:37,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-01-31 17:38:37,586 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 102 flow. Second operand 3 states and 123 transitions. [2024-01-31 17:38:37,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2024-01-31 17:38:37,590 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 17:38:37,592 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:37,592 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 17:38:37,592 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-01-31 17:38:37,593 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 102 flow [2024-01-31 17:38:37,593 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 17:38:37,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:37,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:37,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:38:37,594 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 17:38:37,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:37,595 INFO L85 PathProgramCache]: Analyzing trace with hash 665880633, now seen corresponding path program 1 times [2024-01-31 17:38:37,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:37,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250708965] [2024-01-31 17:38:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:37,665 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 17:38:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250708965] [2024-01-31 17:38:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250708965] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:37,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:38:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110018287] [2024-01-31 17:38:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:38:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:38:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:38:37,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-01-31 17:38:37,670 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 17:38:37,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:37,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-01-31 17:38:37,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:38,106 INFO L124 PetriNetUnfolderBase]: 3311/5247 cut-off events. [2024-01-31 17:38:38,107 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-01-31 17:38:38,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 5247 events. 3311/5247 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 35329 event pairs, 2495 based on Foata normal form. 0/4897 useless extension candidates. Maximal degree in co-relation 10236. Up to 3465 conditions per place. [2024-01-31 17:38:38,138 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 33 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2024-01-31 17:38:38,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:38:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:38:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-01-31 17:38:38,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-01-31 17:38:38,140 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 105 transitions. [2024-01-31 17:38:38,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-01-31 17:38:38,141 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 17:38:38,141 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:38,142 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 17:38:38,142 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-01-31 17:38:38,142 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 96 flow [2024-01-31 17:38:38,143 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 17:38:38,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:38,143 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 17:38:38,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:38:38,143 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 17:38:38,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -832536433, now seen corresponding path program 1 times [2024-01-31 17:38:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:38,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205554004] [2024-01-31 17:38:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:38,345 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 17:38:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205554004] [2024-01-31 17:38:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205554004] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291706207] [2024-01-31 17:38:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:38,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:38,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:38:38,366 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 17:38:38,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:38,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:38:38,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:41,634 INFO L124 PetriNetUnfolderBase]: 24693/35890 cut-off events. [2024-01-31 17:38:41,634 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-01-31 17:38:41,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70360 conditions, 35890 events. 24693/35890 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 259286 event pairs, 7796 based on Foata normal form. 834/36612 useless extension candidates. Maximal degree in co-relation 70356. Up to 17449 conditions per place. [2024-01-31 17:38:41,851 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 50 selfloop transitions, 7 changer transitions 63/133 dead transitions. [2024-01-31 17:38:41,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 133 transitions, 524 flow [2024-01-31 17:38:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:38:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:38:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-01-31 17:38:41,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6495956873315364 [2024-01-31 17:38:41,853 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 96 flow. Second operand 7 states and 241 transitions. [2024-01-31 17:38:41,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 133 transitions, 524 flow [2024-01-31 17:38:42,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:38:42,065 INFO L231 Difference]: Finished difference. Result has 66 places, 49 transitions, 181 flow [2024-01-31 17:38:42,065 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=66, PETRI_TRANSITIONS=49} [2024-01-31 17:38:42,066 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 5 predicate places. [2024-01-31 17:38:42,066 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 49 transitions, 181 flow [2024-01-31 17:38:42,066 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 17:38:42,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:42,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:38:42,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:38:42,067 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 17:38:42,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:42,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1395255598, now seen corresponding path program 1 times [2024-01-31 17:38:42,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:42,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679942081] [2024-01-31 17:38:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:42,184 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 17:38:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679942081] [2024-01-31 17:38:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679942081] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:42,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:42,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69745806] [2024-01-31 17:38:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:42,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:42,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:42,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-01-31 17:38:42,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 49 transitions, 181 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 17:38:42,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:42,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-01-31 17:38:42,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:44,442 INFO L124 PetriNetUnfolderBase]: 15995/24678 cut-off events. [2024-01-31 17:38:44,443 INFO L125 PetriNetUnfolderBase]: For 15772/16348 co-relation queries the response was YES. [2024-01-31 17:38:44,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61506 conditions, 24678 events. 15995/24678 cut-off events. For 15772/16348 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 188939 event pairs, 4480 based on Foata normal form. 745/24473 useless extension candidates. Maximal degree in co-relation 61497. Up to 13808 conditions per place. [2024-01-31 17:38:44,598 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 35 selfloop transitions, 3 changer transitions 43/102 dead transitions. [2024-01-31 17:38:44,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 499 flow [2024-01-31 17:38:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:38:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:38:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 17:38:44,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-01-31 17:38:44,601 INFO L175 Difference]: Start difference. First operand has 66 places, 49 transitions, 181 flow. Second operand 7 states and 224 transitions. [2024-01-31 17:38:44,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 499 flow [2024-01-31 17:38:44,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 469 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:44,753 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 182 flow [2024-01-31 17:38:44,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2024-01-31 17:38:44,755 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-01-31 17:38:44,755 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 182 flow [2024-01-31 17:38:44,756 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 17:38:44,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:44,756 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] [2024-01-31 17:38:44,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:38:44,756 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 17:38:44,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1289604979, now seen corresponding path program 1 times [2024-01-31 17:38:44,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:44,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315613862] [2024-01-31 17:38:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:44,885 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 17:38:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315613862] [2024-01-31 17:38:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315613862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:44,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:38:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799119860] [2024-01-31 17:38:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:38:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:38:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:38:44,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:44,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 182 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 17:38:44,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:44,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:44,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:48,616 INFO L124 PetriNetUnfolderBase]: 26519/40803 cut-off events. [2024-01-31 17:38:48,616 INFO L125 PetriNetUnfolderBase]: For 22207/26812 co-relation queries the response was YES. [2024-01-31 17:38:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94387 conditions, 40803 events. 26519/40803 cut-off events. For 22207/26812 co-relation queries the response was YES. Maximal size of possible extension queue 1788. Compared 316049 event pairs, 4093 based on Foata normal form. 1654/41218 useless extension candidates. Maximal degree in co-relation 94373. Up to 20075 conditions per place. [2024-01-31 17:38:48,904 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 56 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-01-31 17:38:48,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 83 transitions, 396 flow [2024-01-31 17:38:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:38:48,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:38:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-01-31 17:38:48,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028301886792453 [2024-01-31 17:38:48,906 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 182 flow. Second operand 4 states and 149 transitions. [2024-01-31 17:38:48,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 83 transitions, 396 flow [2024-01-31 17:38:49,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 378 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 17:38:49,408 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 210 flow [2024-01-31 17:38:49,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-01-31 17:38:49,408 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2024-01-31 17:38:49,408 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 210 flow [2024-01-31 17:38:49,409 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 17:38:49,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:49,409 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] [2024-01-31 17:38:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:38:49,409 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 17:38:49,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1696344729, now seen corresponding path program 1 times [2024-01-31 17:38:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:49,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734132859] [2024-01-31 17:38:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:49,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:49,591 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 17:38:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734132859] [2024-01-31 17:38:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734132859] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:38:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303092396] [2024-01-31 17:38:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:38:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:38:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:38:49,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:49,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 17:38:49,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:49,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:49,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:52,280 INFO L124 PetriNetUnfolderBase]: 21929/33531 cut-off events. [2024-01-31 17:38:52,281 INFO L125 PetriNetUnfolderBase]: For 18264/21973 co-relation queries the response was YES. [2024-01-31 17:38:52,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85406 conditions, 33531 events. 21929/33531 cut-off events. For 18264/21973 co-relation queries the response was YES. Maximal size of possible extension queue 1430. Compared 246790 event pairs, 2435 based on Foata normal form. 1425/33927 useless extension candidates. Maximal degree in co-relation 85396. Up to 11644 conditions per place. [2024-01-31 17:38:52,675 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 73 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-01-31 17:38:52,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 529 flow [2024-01-31 17:38:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:38:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:38:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 17:38:52,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.720754716981132 [2024-01-31 17:38:52,677 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 210 flow. Second operand 5 states and 191 transitions. [2024-01-31 17:38:52,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 529 flow [2024-01-31 17:38:52,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:38:52,682 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 275 flow [2024-01-31 17:38:52,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-01-31 17:38:52,682 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2024-01-31 17:38:52,682 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 275 flow [2024-01-31 17:38:52,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 17:38:52,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:52,683 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 17:38:52,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:38:52,683 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 17:38:52,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:52,684 INFO L85 PathProgramCache]: Analyzing trace with hash -575502576, now seen corresponding path program 1 times [2024-01-31 17:38:52,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:52,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557558027] [2024-01-31 17:38:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:52,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:53,186 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 17:38:53,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557558027] [2024-01-31 17:38:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557558027] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:38:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780058691] [2024-01-31 17:38:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:38:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:38:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:38:53,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:53,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 17:38:53,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:53,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:53,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:38:57,180 INFO L124 PetriNetUnfolderBase]: 24844/41030 cut-off events. [2024-01-31 17:38:57,181 INFO L125 PetriNetUnfolderBase]: For 31192/39404 co-relation queries the response was YES. [2024-01-31 17:38:57,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107389 conditions, 41030 events. 24844/41030 cut-off events. For 31192/39404 co-relation queries the response was YES. Maximal size of possible extension queue 2239. Compared 362589 event pairs, 9482 based on Foata normal form. 633/38360 useless extension candidates. Maximal degree in co-relation 107377. Up to 19095 conditions per place. [2024-01-31 17:38:57,520 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 91 selfloop transitions, 20 changer transitions 10/154 dead transitions. [2024-01-31 17:38:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 154 transitions, 807 flow [2024-01-31 17:38:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:38:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:38:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2024-01-31 17:38:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2024-01-31 17:38:57,522 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 275 flow. Second operand 10 states and 340 transitions. [2024-01-31 17:38:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 154 transitions, 807 flow [2024-01-31 17:38:57,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 792 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 17:38:57,530 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 435 flow [2024-01-31 17:38:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-01-31 17:38:57,531 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 23 predicate places. [2024-01-31 17:38:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 435 flow [2024-01-31 17:38:57,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 17:38:57,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:38:57,532 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 17:38:57,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:38:57,532 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 17:38:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:38:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash 941552296, now seen corresponding path program 2 times [2024-01-31 17:38:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:38:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371188202] [2024-01-31 17:38:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:38:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:38:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:38:57,706 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 17:38:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:38:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371188202] [2024-01-31 17:38:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371188202] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:38:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:38:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:38:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187031067] [2024-01-31 17:38:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:38:57,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:38:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:38:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:38:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:38:57,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-01-31 17:38:57,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 17:38:57,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:38:57,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-01-31 17:38:57,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:02,738 INFO L124 PetriNetUnfolderBase]: 33496/49438 cut-off events. [2024-01-31 17:39:02,739 INFO L125 PetriNetUnfolderBase]: For 121055/130041 co-relation queries the response was YES. [2024-01-31 17:39:03,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174294 conditions, 49438 events. 33496/49438 cut-off events. For 121055/130041 co-relation queries the response was YES. Maximal size of possible extension queue 2209. Compared 358371 event pairs, 2735 based on Foata normal form. 1813/49532 useless extension candidates. Maximal degree in co-relation 174274. Up to 17224 conditions per place. [2024-01-31 17:39:03,172 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 125 selfloop transitions, 14 changer transitions 23/183 dead transitions. [2024-01-31 17:39:03,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 183 transitions, 1351 flow [2024-01-31 17:39:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:39:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:39:03,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-01-31 17:39:03,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7264150943396226 [2024-01-31 17:39:03,174 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 435 flow. Second operand 6 states and 231 transitions. [2024-01-31 17:39:03,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 183 transitions, 1351 flow [2024-01-31 17:39:03,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 183 transitions, 1349 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 17:39:03,261 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 454 flow [2024-01-31 17:39:03,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-01-31 17:39:03,262 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 28 predicate places. [2024-01-31 17:39:03,262 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 454 flow [2024-01-31 17:39:03,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 17:39:03,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:03,263 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 17:39:03,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:39:03,263 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 17:39:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:03,263 INFO L85 PathProgramCache]: Analyzing trace with hash 261736781, now seen corresponding path program 1 times [2024-01-31 17:39:03,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429449419] [2024-01-31 17:39:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:03,911 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 17:39:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:03,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429449419] [2024-01-31 17:39:03,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429449419] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:03,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:03,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 17:39:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198595812] [2024-01-31 17:39:03,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:03,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 17:39:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 17:39:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:39:03,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-01-31 17:39:03,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 454 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 17:39:03,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:03,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-01-31 17:39:03,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:39:08,181 INFO L124 PetriNetUnfolderBase]: 23420/37706 cut-off events. [2024-01-31 17:39:08,186 INFO L125 PetriNetUnfolderBase]: For 86907/95473 co-relation queries the response was YES. [2024-01-31 17:39:08,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129703 conditions, 37706 events. 23420/37706 cut-off events. For 86907/95473 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 315905 event pairs, 4658 based on Foata normal form. 921/35614 useless extension candidates. Maximal degree in co-relation 129680. Up to 8147 conditions per place. [2024-01-31 17:39:08,730 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 123 selfloop transitions, 39 changer transitions 20/210 dead transitions. [2024-01-31 17:39:08,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 210 transitions, 1528 flow [2024-01-31 17:39:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:39:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:39:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2024-01-31 17:39:08,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264150943396226 [2024-01-31 17:39:08,735 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 454 flow. Second operand 10 states and 332 transitions. [2024-01-31 17:39:08,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 210 transitions, 1528 flow [2024-01-31 17:39:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 210 transitions, 1471 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-01-31 17:39:09,290 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 726 flow [2024-01-31 17:39:09,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=726, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-01-31 17:39:09,292 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2024-01-31 17:39:09,293 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 726 flow [2024-01-31 17:39:09,294 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 17:39:09,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:39:09,294 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 17:39:09,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:39:09,295 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 17:39:09,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:39:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1367179075, now seen corresponding path program 2 times [2024-01-31 17:39:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:39:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060488173] [2024-01-31 17:39:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:39:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:39:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:39:09,514 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 17:39:09,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:39:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060488173] [2024-01-31 17:39:09,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060488173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:39:09,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:39:09,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 17:39:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169711538] [2024-01-31 17:39:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:39:09,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:39:09,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:39:09,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:39:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:39:09,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-01-31 17:39:09,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 726 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 17:39:09,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:39:09,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-01-31 17:39:09,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand