/usr/bin/java -Xmx16000000000 -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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:30:04,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:30:04,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:30:04,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:30:04,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:30:04,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:30:04,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:30:04,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:30:04,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:30:04,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:30:04,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:30:04,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:30:04,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:30:04,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:30:04,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:30:04,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:30:04,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:30:04,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:30:04,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:30:04,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:30:04,681 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.epf [2021-03-11 02:30:04,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:30:04,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:30:04,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:30:04,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:30:04,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:30:04,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:30:04,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:30:04,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:30:04,712 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:30:04,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:30:04,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:30:04,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:30:04,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:30:04,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:30:04,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:30:04,967 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:30:04,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2021-03-11 02:30:05,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0f2120ef/512fa73b32d747b4941599dc6a5fa054/FLAGe83b0b154 [2021-03-11 02:30:05,447 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:30:05,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i [2021-03-11 02:30:05,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0f2120ef/512fa73b32d747b4941599dc6a5fa054/FLAGe83b0b154 [2021-03-11 02:30:05,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0f2120ef/512fa73b32d747b4941599dc6a5fa054 [2021-03-11 02:30:05,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:30:05,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:30:05,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:30:05,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:30:05,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:30:05,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40be0bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05, skipping insertion in model container [2021-03-11 02:30:05,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:30:05,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:30:05,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i[949,962] [2021-03-11 02:30:05,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:30:05,742 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:30:05,750 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.opt.i[949,962] [2021-03-11 02:30:05,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:30:05,822 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:30:05,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05 WrapperNode [2021-03-11 02:30:05,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:30:05,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:30:05,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:30:05,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:30:05,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:30:05,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:30:05,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:30:05,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:30:05,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (1/1) ... [2021-03-11 02:30:05,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:30:05,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:30:05,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:30:05,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:30:05,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (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 [2021-03-11 02:30:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:30:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:30:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:30:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:30:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:30:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:30:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:30:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:30:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:30:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:30:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:30:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:30:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:30:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:30:05,965 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:30:06,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:30:06,219 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:30:06,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:30:06 BoogieIcfgContainer [2021-03-11 02:30:06,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:30:06,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:30:06,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:30:06,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:30:06,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:30:05" (1/3) ... [2021-03-11 02:30:06,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b25c177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:30:06, skipping insertion in model container [2021-03-11 02:30:06,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:30:05" (2/3) ... [2021-03-11 02:30:06,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b25c177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:30:06, skipping insertion in model container [2021-03-11 02:30:06,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:30:06" (3/3) ... [2021-03-11 02:30:06,225 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.opt.i [2021-03-11 02:30:06,229 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:30:06,232 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:30:06,232 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:30:06,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,251 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,253 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,256 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:30:06,262 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:30:06,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:30:06,288 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:30:06,289 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:30:06,289 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:30:06,289 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:30:06,289 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:30:06,289 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:30:06,289 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:30:06,289 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:30:06,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:30:06,320 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:30:06,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:30:06,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:30:06,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:30:06,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:30:06,336 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:30:06,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:30:06,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:06,337 INFO L255 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] [2021-03-11 02:30:06,337 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:06,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-03-11 02:30:06,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:06,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961275573] [2021-03-11 02:30:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:06,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:06,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:06,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:06,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:06,606 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:06,624 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:06,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:06,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:06,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:06,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:06,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:06,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:06,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961275573] [2021-03-11 02:30:06,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:30:06,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929269995] [2021-03-11 02:30:06,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:30:06,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:06,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:30:06,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:30:06,700 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:06,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-03-11 02:30:06,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:06,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:06,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:06,953 INFO L129 PetriNetUnfolder]: 268/637 cut-off events. [2021-03-11 02:30:06,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:30:06,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 637 events. 268/637 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3471 event pairs, 2 based on Foata normal form. 32/646 useless extension candidates. Maximal degree in co-relation 1078. Up to 149 conditions per place. [2021-03-11 02:30:06,964 INFO L132 encePairwiseOnDemand]: 63/75 looper letters, 19 selfloop transitions, 7 changer transitions 47/117 dead transitions. [2021-03-11 02:30:06,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 389 flow [2021-03-11 02:30:06,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:30:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:30:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 807 transitions. [2021-03-11 02:30:06,976 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8276923076923077 [2021-03-11 02:30:06,977 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 807 transitions. [2021-03-11 02:30:06,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 807 transitions. [2021-03-11 02:30:06,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:06,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 807 transitions. [2021-03-11 02:30:06,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.07692307692308) internal successors, (807), 13 states have internal predecessors, (807), 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) [2021-03-11 02:30:06,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-03-11 02:30:06,991 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-03-11 02:30:06,992 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 807 transitions. [2021-03-11 02:30:06,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 389 flow [2021-03-11 02:30:06,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:30:06,997 INFO L241 Difference]: Finished difference. Result has 90 places, 63 transitions, 214 flow [2021-03-11 02:30:06,998 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=214, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2021-03-11 02:30:06,999 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-03-11 02:30:06,999 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 214 flow [2021-03-11 02:30:07,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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) [2021-03-11 02:30:07,000 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:07,000 INFO L255 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] [2021-03-11 02:30:07,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:30:07,000 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:07,001 INFO L82 PathProgramCache]: Analyzing trace with hash 468171258, now seen corresponding path program 1 times [2021-03-11 02:30:07,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:07,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389020160] [2021-03-11 02:30:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:07,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,046 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:07,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:07,057 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:07,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:07,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:07,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389020160] [2021-03-11 02:30:07,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:07,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:30:07,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217384691] [2021-03-11 02:30:07,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:30:07,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:07,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:30:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:30:07,094 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:07,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2021-03-11 02:30:07,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:07,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:07,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:07,296 INFO L129 PetriNetUnfolder]: 116/405 cut-off events. [2021-03-11 02:30:07,297 INFO L130 PetriNetUnfolder]: For 929/1240 co-relation queries the response was YES. [2021-03-11 02:30:07,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 405 events. 116/405 cut-off events. For 929/1240 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2156 event pairs, 8 based on Foata normal form. 14/409 useless extension candidates. Maximal degree in co-relation 1255. Up to 122 conditions per place. [2021-03-11 02:30:07,299 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 24 selfloop transitions, 8 changer transitions 40/116 dead transitions. [2021-03-11 02:30:07,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 754 flow [2021-03-11 02:30:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:30:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:30:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 792 transitions. [2021-03-11 02:30:07,301 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8123076923076923 [2021-03-11 02:30:07,302 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 792 transitions. [2021-03-11 02:30:07,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 792 transitions. [2021-03-11 02:30:07,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:07,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 792 transitions. [2021-03-11 02:30:07,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.92307692307692) internal successors, (792), 13 states have internal predecessors, (792), 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) [2021-03-11 02:30:07,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-03-11 02:30:07,306 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 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) [2021-03-11 02:30:07,306 INFO L185 Difference]: Start difference. First operand has 90 places, 63 transitions, 214 flow. Second operand 13 states and 792 transitions. [2021-03-11 02:30:07,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 754 flow [2021-03-11 02:30:07,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 702 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-03-11 02:30:07,316 INFO L241 Difference]: Finished difference. Result has 101 places, 68 transitions, 307 flow [2021-03-11 02:30:07,316 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=307, PETRI_PLACES=101, PETRI_TRANSITIONS=68} [2021-03-11 02:30:07,316 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-03-11 02:30:07,316 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 68 transitions, 307 flow [2021-03-11 02:30:07,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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) [2021-03-11 02:30:07,317 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:07,317 INFO L255 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] [2021-03-11 02:30:07,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:30:07,317 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1337245637, now seen corresponding path program 1 times [2021-03-11 02:30:07,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:07,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76519013] [2021-03-11 02:30:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:07,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,414 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:07,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:07,424 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:07,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:07,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:07,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76519013] [2021-03-11 02:30:07,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:07,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:30:07,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782108377] [2021-03-11 02:30:07,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:30:07,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:07,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:30:07,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:30:07,462 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:07,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 68 transitions, 307 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-03-11 02:30:07,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:07,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:07,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:07,616 INFO L129 PetriNetUnfolder]: 54/246 cut-off events. [2021-03-11 02:30:07,616 INFO L130 PetriNetUnfolder]: For 838/1128 co-relation queries the response was YES. [2021-03-11 02:30:07,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 246 events. 54/246 cut-off events. For 838/1128 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1083 event pairs, 1 based on Foata normal form. 10/250 useless extension candidates. Maximal degree in co-relation 847. Up to 72 conditions per place. [2021-03-11 02:30:07,618 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 12 selfloop transitions, 10 changer transitions 46/112 dead transitions. [2021-03-11 02:30:07,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 112 transitions, 879 flow [2021-03-11 02:30:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:30:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:30:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 668 transitions. [2021-03-11 02:30:07,620 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8096969696969697 [2021-03-11 02:30:07,620 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 668 transitions. [2021-03-11 02:30:07,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 668 transitions. [2021-03-11 02:30:07,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:07,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 668 transitions. [2021-03-11 02:30:07,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.72727272727273) internal successors, (668), 11 states have internal predecessors, (668), 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) [2021-03-11 02:30:07,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-03-11 02:30:07,623 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-03-11 02:30:07,623 INFO L185 Difference]: Start difference. First operand has 101 places, 68 transitions, 307 flow. Second operand 11 states and 668 transitions. [2021-03-11 02:30:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 112 transitions, 879 flow [2021-03-11 02:30:07,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 808 flow, removed 32 selfloop flow, removed 9 redundant places. [2021-03-11 02:30:07,627 INFO L241 Difference]: Finished difference. Result has 101 places, 64 transitions, 283 flow [2021-03-11 02:30:07,628 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=283, PETRI_PLACES=101, PETRI_TRANSITIONS=64} [2021-03-11 02:30:07,628 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-03-11 02:30:07,628 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 64 transitions, 283 flow [2021-03-11 02:30:07,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-03-11 02:30:07,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:07,628 INFO L255 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] [2021-03-11 02:30:07,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:30:07,628 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash -313537994, now seen corresponding path program 1 times [2021-03-11 02:30:07,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:07,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936524418] [2021-03-11 02:30:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:07,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,656 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:07,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:07,664 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:07,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:07,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:07,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936524418] [2021-03-11 02:30:07,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:07,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:30:07,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938262146] [2021-03-11 02:30:07,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:30:07,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:07,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:30:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:30:07,697 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:07,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 64 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-03-11 02:30:07,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:07,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:07,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:07,805 INFO L129 PetriNetUnfolder]: 7/103 cut-off events. [2021-03-11 02:30:07,806 INFO L130 PetriNetUnfolder]: For 322/421 co-relation queries the response was YES. [2021-03-11 02:30:07,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 103 events. 7/103 cut-off events. For 322/421 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 9/110 useless extension candidates. Maximal degree in co-relation 297. Up to 18 conditions per place. [2021-03-11 02:30:07,808 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 15 selfloop transitions, 8 changer transitions 10/77 dead transitions. [2021-03-11 02:30:07,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 77 transitions, 487 flow [2021-03-11 02:30:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:30:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:30:07,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2021-03-11 02:30:07,810 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-03-11 02:30:07,810 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2021-03-11 02:30:07,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2021-03-11 02:30:07,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:07,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2021-03-11 02:30:07,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 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) [2021-03-11 02:30:07,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-03-11 02:30:07,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 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) [2021-03-11 02:30:07,813 INFO L185 Difference]: Start difference. First operand has 101 places, 64 transitions, 283 flow. Second operand 10 states and 590 transitions. [2021-03-11 02:30:07,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 77 transitions, 487 flow [2021-03-11 02:30:07,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 77 transitions, 387 flow, removed 36 selfloop flow, removed 14 redundant places. [2021-03-11 02:30:07,817 INFO L241 Difference]: Finished difference. Result has 98 places, 66 transitions, 290 flow [2021-03-11 02:30:07,818 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=98, PETRI_TRANSITIONS=66} [2021-03-11 02:30:07,818 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 29 predicate places. [2021-03-11 02:30:07,818 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 66 transitions, 290 flow [2021-03-11 02:30:07,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-03-11 02:30:07,818 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:07,818 INFO L255 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] [2021-03-11 02:30:07,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:30:07,818 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash 127804704, now seen corresponding path program 1 times [2021-03-11 02:30:07,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:07,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740122393] [2021-03-11 02:30:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:07,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:07,898 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:07,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:07,919 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:07,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:07,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:07,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:07,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:07,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740122393] [2021-03-11 02:30:07,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:07,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:30:07,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946168127] [2021-03-11 02:30:07,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:30:07,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:07,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:30:07,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:30:07,961 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:07,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 66 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-03-11 02:30:07,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:07,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:07,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:08,025 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-03-11 02:30:08,025 INFO L130 PetriNetUnfolder]: For 224/340 co-relation queries the response was YES. [2021-03-11 02:30:08,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 91 events. 3/91 cut-off events. For 224/340 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 206 event pairs, 0 based on Foata normal form. 8/97 useless extension candidates. Maximal degree in co-relation 239. Up to 15 conditions per place. [2021-03-11 02:30:08,026 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 12 selfloop transitions, 7 changer transitions 9/72 dead transitions. [2021-03-11 02:30:08,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 72 transitions, 402 flow [2021-03-11 02:30:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:30:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:30:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 472 transitions. [2021-03-11 02:30:08,027 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7866666666666666 [2021-03-11 02:30:08,027 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 472 transitions. [2021-03-11 02:30:08,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 472 transitions. [2021-03-11 02:30:08,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:08,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 472 transitions. [2021-03-11 02:30:08,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.0) internal successors, (472), 8 states have internal predecessors, (472), 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) [2021-03-11 02:30:08,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2021-03-11 02:30:08,030 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 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) [2021-03-11 02:30:08,030 INFO L185 Difference]: Start difference. First operand has 98 places, 66 transitions, 290 flow. Second operand 8 states and 472 transitions. [2021-03-11 02:30:08,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 72 transitions, 402 flow [2021-03-11 02:30:08,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 72 transitions, 339 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-03-11 02:30:08,032 INFO L241 Difference]: Finished difference. Result has 95 places, 63 transitions, 238 flow [2021-03-11 02:30:08,032 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=95, PETRI_TRANSITIONS=63} [2021-03-11 02:30:08,032 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 26 predicate places. [2021-03-11 02:30:08,032 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 63 transitions, 238 flow [2021-03-11 02:30:08,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-03-11 02:30:08,032 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:08,033 INFO L255 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] [2021-03-11 02:30:08,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:30:08,033 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:08,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1858631148, now seen corresponding path program 2 times [2021-03-11 02:30:08,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:08,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512806084] [2021-03-11 02:30:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:08,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:08,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:08,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:08,096 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:08,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:08,109 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:08,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:08,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:08,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:08,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:08,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512806084] [2021-03-11 02:30:08,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:08,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:30:08,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760068745] [2021-03-11 02:30:08,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:30:08,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:08,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:30:08,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:30:08,169 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:30:08,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 63 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-03-11 02:30:08,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:08,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:30:08,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:08,255 INFO L129 PetriNetUnfolder]: 1/79 cut-off events. [2021-03-11 02:30:08,255 INFO L130 PetriNetUnfolder]: For 132/165 co-relation queries the response was YES. [2021-03-11 02:30:08,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 79 events. 1/79 cut-off events. For 132/165 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 11/89 useless extension candidates. Maximal degree in co-relation 181. Up to 11 conditions per place. [2021-03-11 02:30:08,256 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 11 selfloop transitions, 4 changer transitions 10/68 dead transitions. [2021-03-11 02:30:08,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 68 transitions, 328 flow [2021-03-11 02:30:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:30:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:30:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 527 transitions. [2021-03-11 02:30:08,257 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7807407407407407 [2021-03-11 02:30:08,257 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 527 transitions. [2021-03-11 02:30:08,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 527 transitions. [2021-03-11 02:30:08,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:08,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 527 transitions. [2021-03-11 02:30:08,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 58.55555555555556) internal successors, (527), 9 states have internal predecessors, (527), 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) [2021-03-11 02:30:08,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2021-03-11 02:30:08,260 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2021-03-11 02:30:08,260 INFO L185 Difference]: Start difference. First operand has 95 places, 63 transitions, 238 flow. Second operand 9 states and 527 transitions. [2021-03-11 02:30:08,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 68 transitions, 328 flow [2021-03-11 02:30:08,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 68 transitions, 274 flow, removed 17 selfloop flow, removed 12 redundant places. [2021-03-11 02:30:08,262 INFO L241 Difference]: Finished difference. Result has 93 places, 58 transitions, 186 flow [2021-03-11 02:30:08,262 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=93, PETRI_TRANSITIONS=58} [2021-03-11 02:30:08,262 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 24 predicate places. [2021-03-11 02:30:08,262 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 58 transitions, 186 flow [2021-03-11 02:30:08,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 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) [2021-03-11 02:30:08,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:30:08,263 INFO L255 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] [2021-03-11 02:30:08,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:30:08,263 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:30:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:30:08,263 INFO L82 PathProgramCache]: Analyzing trace with hash 193084450, now seen corresponding path program 3 times [2021-03-11 02:30:08,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:30:08,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826190091] [2021-03-11 02:30:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:30:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:30:08,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:08,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:08,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:30:08,313 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:30:08,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:30:08,322 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:30:08,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:30:08,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:08,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:30:08,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:30:08,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:30:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:30:08,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826190091] [2021-03-11 02:30:08,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:30:08,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:30:08,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303300426] [2021-03-11 02:30:08,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:30:08,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:30:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:30:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:30:08,359 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 75 [2021-03-11 02:30:08,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 58 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 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) [2021-03-11 02:30:08,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:30:08,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 75 [2021-03-11 02:30:08,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:30:08,449 INFO L129 PetriNetUnfolder]: 4/64 cut-off events. [2021-03-11 02:30:08,449 INFO L130 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2021-03-11 02:30:08,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 64 events. 4/64 cut-off events. For 59/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 2/66 useless extension candidates. Maximal degree in co-relation 132. Up to 7 conditions per place. [2021-03-11 02:30:08,450 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-11 02:30:08,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 63 transitions, 254 flow [2021-03-11 02:30:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:30:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:30:08,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 619 transitions. [2021-03-11 02:30:08,452 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7503030303030302 [2021-03-11 02:30:08,452 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 619 transitions. [2021-03-11 02:30:08,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 619 transitions. [2021-03-11 02:30:08,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:30:08,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 619 transitions. [2021-03-11 02:30:08,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.27272727272727) internal successors, (619), 11 states have internal predecessors, (619), 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) [2021-03-11 02:30:08,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-03-11 02:30:08,455 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 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) [2021-03-11 02:30:08,455 INFO L185 Difference]: Start difference. First operand has 93 places, 58 transitions, 186 flow. Second operand 11 states and 619 transitions. [2021-03-11 02:30:08,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 63 transitions, 254 flow [2021-03-11 02:30:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 63 transitions, 208 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-03-11 02:30:08,457 INFO L241 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2021-03-11 02:30:08,457 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2021-03-11 02:30:08,457 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 14 predicate places. [2021-03-11 02:30:08,457 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2021-03-11 02:30:08,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 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) [2021-03-11 02:30:08,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:30:08,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:30:08 BasicIcfg [2021-03-11 02:30:08,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:30:08,461 INFO L168 Benchmark]: Toolchain (without parser) took 2994.94 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 300.8 MB in the beginning and 312.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:30:08,462 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 337.6 MB. Free memory was 319.1 MB in the beginning and 319.0 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:30:08,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.60 ms. Allocated memory is still 337.6 MB. Free memory was 300.2 MB in the beginning and 300.6 MB in the end (delta: -441.3 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-11 02:30:08,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.48 ms. Allocated memory is still 337.6 MB. Free memory was 300.6 MB in the beginning and 298.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:30:08,465 INFO L168 Benchmark]: Boogie Preprocessor took 27.25 ms. Allocated memory is still 337.6 MB. Free memory was 298.5 MB in the beginning and 297.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:30:08,468 INFO L168 Benchmark]: RCFGBuilder took 325.12 ms. Allocated memory is still 337.6 MB. Free memory was 297.5 MB in the beginning and 274.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:30:08,471 INFO L168 Benchmark]: TraceAbstraction took 2239.96 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 273.3 MB in the beginning and 312.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:30:08,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 337.6 MB. Free memory was 319.1 MB in the beginning and 319.0 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 353.60 ms. Allocated memory is still 337.6 MB. Free memory was 300.2 MB in the beginning and 300.6 MB in the end (delta: -441.3 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.48 ms. Allocated memory is still 337.6 MB. Free memory was 300.6 MB in the beginning and 298.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.25 ms. Allocated memory is still 337.6 MB. Free memory was 298.5 MB in the beginning and 297.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 325.12 ms. Allocated memory is still 337.6 MB. Free memory was 297.5 MB in the beginning and 274.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2239.96 ms. Allocated memory was 337.6 MB in the beginning and 406.8 MB in the end (delta: 69.2 MB). Free memory was 273.3 MB in the beginning and 312.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2172.3ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1081.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 128 SDtfs, 237 SDslu, 419 SDs, 0 SdLazy, 271 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 181.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 803.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=2, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 150.0ms SatisfiabilityAnalysisTime, 739.1ms InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...