/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 00:38:18,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 00:38:18,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 00:38:18,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 00:38:18,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 00:38:18,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 00:38:18,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 00:38:18,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 00:38:18,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 00:38:18,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 00:38:18,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 00:38:18,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 00:38:18,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 00:38:18,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 00:38:18,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 00:38:18,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 00:38:18,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 00:38:18,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 00:38:18,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 00:38:18,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 00:38:18,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf [2021-08-13 00:38:18,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 00:38:18,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 00:38:18,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 00:38:18,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 00:38:18,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 00:38:18,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 00:38:18,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 00:38:18,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 00:38:18,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 00:38:18,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 00:38:18,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 00:38:18,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:38:18,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 00:38:18,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 00:38:18,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 00:38:18,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 00:38:18,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 00:38:18,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 00:38:18,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 00:38:18,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 00:38:18,923 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 00:38:18,924 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 00:38:18,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-08-13 00:38:18,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8206b37f/20d2704a841d4361ba07ddafa413d081/FLAG9d9322359 [2021-08-13 00:38:19,515 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 00:38:19,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2021-08-13 00:38:19,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8206b37f/20d2704a841d4361ba07ddafa413d081/FLAG9d9322359 [2021-08-13 00:38:19,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8206b37f/20d2704a841d4361ba07ddafa413d081 [2021-08-13 00:38:19,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 00:38:19,977 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 00:38:19,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 00:38:19,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 00:38:19,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 00:38:19,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:38:19" (1/1) ... [2021-08-13 00:38:19,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:19, skipping insertion in model container [2021-08-13 00:38:19,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:38:19" (1/1) ... [2021-08-13 00:38:19,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 00:38:20,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 00:38:20,177 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i[950,963] [2021-08-13 00:38:20,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:38:20,368 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 00:38:20,380 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i[950,963] [2021-08-13 00:38:20,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:38:20,470 INFO L208 MainTranslator]: Completed translation [2021-08-13 00:38:20,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20 WrapperNode [2021-08-13 00:38:20,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 00:38:20,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 00:38:20,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 00:38:20,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 00:38:20,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 00:38:20,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 00:38:20,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 00:38:20,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 00:38:20,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... [2021-08-13 00:38:20,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 00:38:20,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 00:38:20,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 00:38:20,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 00:38:20,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:38:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 00:38:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 00:38:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 00:38:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 00:38:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 00:38:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 00:38:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 00:38:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 00:38:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 00:38:20,590 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 00:38:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 00:38:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 00:38:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 00:38:20,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 00:38:20,592 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 00:38:20,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 00:38:20,900 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 00:38:20,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:38:20 BoogieIcfgContainer [2021-08-13 00:38:20,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 00:38:20,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 00:38:20,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 00:38:20,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 00:38:20,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:38:19" (1/3) ... [2021-08-13 00:38:20,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1607af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:38:20, skipping insertion in model container [2021-08-13 00:38:20,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:38:20" (2/3) ... [2021-08-13 00:38:20,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1607af0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:38:20, skipping insertion in model container [2021-08-13 00:38:20,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:38:20" (3/3) ... [2021-08-13 00:38:20,910 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2021-08-13 00:38:20,915 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 00:38:20,916 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 00:38:20,916 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 00:38:20,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,950 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,950 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,951 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,951 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,952 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,953 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,953 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,954 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,955 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,957 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,958 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,959 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,959 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,959 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,959 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,963 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,963 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,965 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,969 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,969 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,978 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:38:20,981 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 00:38:21,001 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 00:38:21,029 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 00:38:21,030 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 00:38:21,030 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 00:38:21,030 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 00:38:21,030 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 00:38:21,030 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 00:38:21,030 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 00:38:21,030 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 00:38:21,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 00:38:21,099 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-08-13 00:38:21,100 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:38:21,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 00:38:21,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 00:38:21,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-08-13 00:38:21,161 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-08-13 00:38:21,161 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:38:21,161 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:21,162 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:21,163 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash -710190392, now seen corresponding path program 1 times [2021-08-13 00:38:21,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:21,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678286474] [2021-08-13 00:38:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:21,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:21,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:21,481 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:38:21,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:38:21,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:21,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:21,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:21,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:21,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678286474] [2021-08-13 00:38:21,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678286474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:21,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:21,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:38:21,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703122190] [2021-08-13 00:38:21,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:38:21,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:21,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:38:21,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:38:21,559 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2021-08-13 00:38:21,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-08-13 00:38:21,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:21,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2021-08-13 00:38:21,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:21,668 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2021-08-13 00:38:21,668 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:38:21,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-08-13 00:38:21,670 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 6 selfloop transitions, 2 changer transitions 11/76 dead transitions. [2021-08-13 00:38:21,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 197 flow [2021-08-13 00:38:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:38:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:38:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2021-08-13 00:38:21,683 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8834688346883469 [2021-08-13 00:38:21,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2021-08-13 00:38:21,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2021-08-13 00:38:21,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:21,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2021-08-13 00:38:21,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 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) [2021-08-13 00:38:21,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-08-13 00:38:21,698 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-08-13 00:38:21,699 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2021-08-13 00:38:21,699 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 197 flow [2021-08-13 00:38:21,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-08-13 00:38:21,699 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:21,700 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:21,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 00:38:21,700 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -157935543, now seen corresponding path program 1 times [2021-08-13 00:38:21,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:21,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806595328] [2021-08-13 00:38:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:21,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:21,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:21,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:21,849 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:38:21,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:38:21,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:21,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:21,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:21,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:21,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:21,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:21,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806595328] [2021-08-13 00:38:21,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806595328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:21,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:21,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:38:21,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240637251] [2021-08-13 00:38:21,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:38:21,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:21,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:38:21,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:38:21,922 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:21,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-08-13 00:38:21,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:21,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:21,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:22,187 INFO L129 PetriNetUnfolder]: 17/131 cut-off events. [2021-08-13 00:38:22,188 INFO L130 PetriNetUnfolder]: For 10/20 co-relation queries the response was YES. [2021-08-13 00:38:22,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 131 events. 17/131 cut-off events. For 10/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 379 event pairs, 0 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 208. Up to 16 conditions per place. [2021-08-13 00:38:22,189 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 6 selfloop transitions, 4 changer transitions 36/101 dead transitions. [2021-08-13 00:38:22,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 381 flow [2021-08-13 00:38:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:38:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:38:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 917 transitions. [2021-08-13 00:38:22,192 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8602251407129456 [2021-08-13 00:38:22,192 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 917 transitions. [2021-08-13 00:38:22,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 917 transitions. [2021-08-13 00:38:22,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:22,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 917 transitions. [2021-08-13 00:38:22,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 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) [2021-08-13 00:38:22,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:22,198 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:22,198 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 20 predicate places. [2021-08-13 00:38:22,199 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 101 transitions, 381 flow [2021-08-13 00:38:22,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-08-13 00:38:22,199 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:22,199 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:22,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 00:38:22,200 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:22,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:22,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1397814130, now seen corresponding path program 1 times [2021-08-13 00:38:22,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:22,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373969317] [2021-08-13 00:38:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:22,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:22,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:22,271 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:38:22,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:38:22,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:22,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:22,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:22,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:22,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373969317] [2021-08-13 00:38:22,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373969317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:22,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:22,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:38:22,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011560520] [2021-08-13 00:38:22,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:38:22,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:38:22,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:38:22,322 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:22,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 101 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2021-08-13 00:38:22,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:22,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:22,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:22,575 INFO L129 PetriNetUnfolder]: 303/740 cut-off events. [2021-08-13 00:38:22,576 INFO L130 PetriNetUnfolder]: For 244/330 co-relation queries the response was YES. [2021-08-13 00:38:22,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 740 events. 303/740 cut-off events. For 244/330 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4675 event pairs, 29 based on Foata normal form. 5/727 useless extension candidates. Maximal degree in co-relation 1730. Up to 175 conditions per place. [2021-08-13 00:38:22,581 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 10 selfloop transitions, 3 changer transitions 105/175 dead transitions. [2021-08-13 00:38:22,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 175 transitions, 959 flow [2021-08-13 00:38:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:38:22,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:38:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2021-08-13 00:38:22,584 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8834688346883469 [2021-08-13 00:38:22,584 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2021-08-13 00:38:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2021-08-13 00:38:22,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:22,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2021-08-13 00:38:22,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 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) [2021-08-13 00:38:22,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-08-13 00:38:22,588 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-08-13 00:38:22,588 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 28 predicate places. [2021-08-13 00:38:22,588 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 175 transitions, 959 flow [2021-08-13 00:38:22,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 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) [2021-08-13 00:38:22,589 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:22,589 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:22,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 00:38:22,589 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:22,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:22,590 INFO L82 PathProgramCache]: Analyzing trace with hash 686971652, now seen corresponding path program 1 times [2021-08-13 00:38:22,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:22,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255256773] [2021-08-13 00:38:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:22,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:22,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:22,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:22,683 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:38:22,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:38:22,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:22,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:22,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:22,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:22,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:22,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255256773] [2021-08-13 00:38:22,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255256773] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:22,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:22,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:38:22,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442417657] [2021-08-13 00:38:22,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:38:22,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:38:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:38:22,738 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-08-13 00:38:22,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 175 transitions, 959 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2021-08-13 00:38:22,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:22,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-08-13 00:38:22,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:23,118 INFO L129 PetriNetUnfolder]: 453/1143 cut-off events. [2021-08-13 00:38:23,118 INFO L130 PetriNetUnfolder]: For 674/1603 co-relation queries the response was YES. [2021-08-13 00:38:23,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 1143 events. 453/1143 cut-off events. For 674/1603 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8528 event pairs, 22 based on Foata normal form. 24/1143 useless extension candidates. Maximal degree in co-relation 3491. Up to 332 conditions per place. [2021-08-13 00:38:23,126 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 7 selfloop transitions, 4 changer transitions 204/269 dead transitions. [2021-08-13 00:38:23,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 269 transitions, 2027 flow [2021-08-13 00:38:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:38:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:38:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 923 transitions. [2021-08-13 00:38:23,130 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8658536585365854 [2021-08-13 00:38:23,130 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 923 transitions. [2021-08-13 00:38:23,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 923 transitions. [2021-08-13 00:38:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 923 transitions. [2021-08-13 00:38:23,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.0) internal successors, (923), 13 states have internal predecessors, (923), 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) [2021-08-13 00:38:23,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:23,134 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:23,136 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 40 predicate places. [2021-08-13 00:38:23,136 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 269 transitions, 2027 flow [2021-08-13 00:38:23,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2021-08-13 00:38:23,136 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:23,137 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:23,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 00:38:23,137 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:23,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash -906306401, now seen corresponding path program 1 times [2021-08-13 00:38:23,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:23,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483154427] [2021-08-13 00:38:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:23,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:23,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:23,217 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:38:23,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:38:23,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:38:23,241 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:38:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:23,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:23,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:23,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483154427] [2021-08-13 00:38:23,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483154427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:23,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:23,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:38:23,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022926198] [2021-08-13 00:38:23,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:38:23,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:23,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:38:23,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:38:23,253 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:23,253 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 269 transitions, 2027 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-08-13 00:38:23,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:23,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:23,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:23,649 INFO L129 PetriNetUnfolder]: 930/2242 cut-off events. [2021-08-13 00:38:23,649 INFO L130 PetriNetUnfolder]: For 881/1061 co-relation queries the response was YES. [2021-08-13 00:38:23,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5951 conditions, 2242 events. 930/2242 cut-off events. For 881/1061 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 19027 event pairs, 66 based on Foata normal form. 12/2067 useless extension candidates. Maximal degree in co-relation 5907. Up to 648 conditions per place. [2021-08-13 00:38:23,663 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 10 selfloop transitions, 6 changer transitions 152/240 dead transitions. [2021-08-13 00:38:23,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 240 transitions, 1627 flow [2021-08-13 00:38:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:38:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:38:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-08-13 00:38:23,666 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-08-13 00:38:23,666 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-08-13 00:38:23,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-08-13 00:38:23,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:23,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-08-13 00:38:23,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 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) [2021-08-13 00:38:23,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-08-13 00:38:23,669 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-08-13 00:38:23,670 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2021-08-13 00:38:23,670 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 240 transitions, 1627 flow [2021-08-13 00:38:23,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-08-13 00:38:23,670 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:23,670 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:23,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 00:38:23,671 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:23,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:23,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1875023314, now seen corresponding path program 1 times [2021-08-13 00:38:23,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:23,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504641416] [2021-08-13 00:38:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:23,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:23,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:23,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:23,715 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:38:23,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:38:23,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:38:23,738 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:38:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:23,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:23,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:23,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:23,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504641416] [2021-08-13 00:38:23,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504641416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:23,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:23,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:38:23,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239242910] [2021-08-13 00:38:23,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:38:23,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:23,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:38:23,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:38:23,750 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:23,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 240 transitions, 1627 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-08-13 00:38:23,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:23,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:23,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:24,072 INFO L129 PetriNetUnfolder]: 618/1616 cut-off events. [2021-08-13 00:38:24,072 INFO L130 PetriNetUnfolder]: For 355/997 co-relation queries the response was YES. [2021-08-13 00:38:24,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 1616 events. 618/1616 cut-off events. For 355/997 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 13584 event pairs, 12 based on Foata normal form. 124/1602 useless extension candidates. Maximal degree in co-relation 4446. Up to 466 conditions per place. [2021-08-13 00:38:24,081 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 10 selfloop transitions, 9 changer transitions 129/203 dead transitions. [2021-08-13 00:38:24,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 203 transitions, 1239 flow [2021-08-13 00:38:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:38:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:38:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-08-13 00:38:24,084 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-08-13 00:38:24,084 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-08-13 00:38:24,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-08-13 00:38:24,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:24,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-08-13 00:38:24,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 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) [2021-08-13 00:38:24,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:24,088 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 00:38:24,088 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2021-08-13 00:38:24,088 INFO L482 AbstractCegarLoop]: Abstraction has has 128 places, 203 transitions, 1239 flow [2021-08-13 00:38:24,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-08-13 00:38:24,089 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:24,089 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:24,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 00:38:24,089 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:24,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1717934122, now seen corresponding path program 1 times [2021-08-13 00:38:24,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:24,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250158488] [2021-08-13 00:38:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:24,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:24,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:24,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:24,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:24,143 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:38:24,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:38:24,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:38:24,168 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:38:24,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:24,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:24,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:24,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250158488] [2021-08-13 00:38:24,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250158488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:24,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:24,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:38:24,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963252044] [2021-08-13 00:38:24,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:38:24,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:24,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:38:24,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:38:24,212 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:24,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 203 transitions, 1239 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-08-13 00:38:24,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:24,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:24,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:24,581 INFO L129 PetriNetUnfolder]: 545/1422 cut-off events. [2021-08-13 00:38:24,581 INFO L130 PetriNetUnfolder]: For 312/1307 co-relation queries the response was YES. [2021-08-13 00:38:24,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1422 events. 545/1422 cut-off events. For 312/1307 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 12106 event pairs, 0 based on Foata normal form. 171/1475 useless extension candidates. Maximal degree in co-relation 4682. Up to 441 conditions per place. [2021-08-13 00:38:24,590 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 4 selfloop transitions, 12 changer transitions 112/183 dead transitions. [2021-08-13 00:38:24,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 183 transitions, 1233 flow [2021-08-13 00:38:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 00:38:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 00:38:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-08-13 00:38:24,593 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-08-13 00:38:24,593 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-08-13 00:38:24,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-08-13 00:38:24,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:24,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-08-13 00:38:24,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 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) [2021-08-13 00:38:24,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-08-13 00:38:24,598 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-08-13 00:38:24,598 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2021-08-13 00:38:24,598 INFO L482 AbstractCegarLoop]: Abstraction has has 128 places, 183 transitions, 1233 flow [2021-08-13 00:38:24,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-08-13 00:38:24,599 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:38:24,599 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:38:24,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 00:38:24,599 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:38:24,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:38:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1326256635, now seen corresponding path program 1 times [2021-08-13 00:38:24,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:38:24,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701659238] [2021-08-13 00:38:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:38:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:38:24,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:24,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:38:24,633 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:38:24,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:38:24,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:24,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:38:24,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:38:24,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:38:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:38:24,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:38:24,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701659238] [2021-08-13 00:38:24,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701659238] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:38:24,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:38:24,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:38:24,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272186292] [2021-08-13 00:38:24,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:38:24,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:38:24,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:38:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:38:24,672 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 00:38:24,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 183 transitions, 1233 flow. Second operand has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2021-08-13 00:38:24,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:38:24,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 00:38:24,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:38:24,928 INFO L129 PetriNetUnfolder]: 823/2043 cut-off events. [2021-08-13 00:38:24,928 INFO L130 PetriNetUnfolder]: For 511/1033 co-relation queries the response was YES. [2021-08-13 00:38:24,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 2043 events. 823/2043 cut-off events. For 511/1033 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 18650 event pairs, 0 based on Foata normal form. 8/1874 useless extension candidates. Maximal degree in co-relation 6906. Up to 667 conditions per place. [2021-08-13 00:38:24,938 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 0 selfloop transitions, 0 changer transitions 194/194 dead transitions. [2021-08-13 00:38:24,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 1425 flow [2021-08-13 00:38:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 00:38:24,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 00:38:24,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 424 transitions. [2021-08-13 00:38:24,939 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8617886178861789 [2021-08-13 00:38:24,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 424 transitions. [2021-08-13 00:38:24,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 424 transitions. [2021-08-13 00:38:24,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:38:24,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 424 transitions. [2021-08-13 00:38:24,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.66666666666667) internal successors, (424), 6 states have internal predecessors, (424), 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) [2021-08-13 00:38:24,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2021-08-13 00:38:24,942 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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) [2021-08-13 00:38:24,942 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 55 predicate places. [2021-08-13 00:38:24,943 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 194 transitions, 1425 flow [2021-08-13 00:38:24,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2021-08-13 00:38:24,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown