/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 01:07:47,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 01:07:47,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 01:07:47,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 01:07:47,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 01:07:47,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 01:07:47,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 01:07:47,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 01:07:47,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 01:07:47,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 01:07:47,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 01:07:47,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 01:07:47,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 01:07:47,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 01:07:47,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 01:07:47,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 01:07:47,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 01:07:47,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 01:07:47,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 01:07:48,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 01:07:48,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 01:07:48,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 01:07:48,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 01:07:48,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 01:07:48,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 01:07:48,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 01:07:48,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 01:07:48,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 01:07:48,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 01:07:48,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 01:07:48,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 01:07:48,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 01:07:48,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 01:07:48,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 01:07:48,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 01:07:48,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 01:07:48,026 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 01:07:48,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 01:07:48,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 01:07:48,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 01:07:48,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 01:07:48,067 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 01:07:48,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 01:07:48,068 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 01:07:48,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 01:07:48,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 01:07:48,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 01:07:48,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 01:07:48,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 01:07:48,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 01:07:48,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 01:07:48,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 01:07:48,070 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 01:07:48,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 01:07:48,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 01:07:48,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 01:07:48,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 01:07:48,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 01:07:48,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 01:07:48,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 01:07:48,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 01:07:48,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 01:07:48,072 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 01:07:48,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 01:07:48,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 01:07:48,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 01:07:48,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 01:07:48,433 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 01:07:48,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-03-26 01:07:48,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89dd26f1/184540ad8f884cff98faddda4fbd0314/FLAG30e5ca612 [2021-03-26 01:07:49,011 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 01:07:49,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2021-03-26 01:07:49,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89dd26f1/184540ad8f884cff98faddda4fbd0314/FLAG30e5ca612 [2021-03-26 01:07:49,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89dd26f1/184540ad8f884cff98faddda4fbd0314 [2021-03-26 01:07:49,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 01:07:49,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 01:07:49,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 01:07:49,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 01:07:49,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 01:07:49,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:07:49" (1/1) ... [2021-03-26 01:07:49,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eec0715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:49, skipping insertion in model container [2021-03-26 01:07:49,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:07:49" (1/1) ... [2021-03-26 01:07:49,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 01:07:49,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 01:07:49,737 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-03-26 01:07:49,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 01:07:49,794 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 01:07:49,847 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2021-03-26 01:07:49,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 01:07:50,083 INFO L208 MainTranslator]: Completed translation [2021-03-26 01:07:50,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50 WrapperNode [2021-03-26 01:07:50,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 01:07:50,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 01:07:50,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 01:07:50,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 01:07:50,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 01:07:50,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 01:07:50,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 01:07:50,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 01:07:50,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (1/1) ... [2021-03-26 01:07:50,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 01:07:50,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 01:07:50,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 01:07:50,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 01:07:50,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (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 [2021-03-26 01:07:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 01:07:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 01:07:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 01:07:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 01:07:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-26 01:07:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 01:07:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 01:07:50,285 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 01:07:50,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 01:07:50,706 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-26 01:07:50,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:07:50 BoogieIcfgContainer [2021-03-26 01:07:50,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 01:07:50,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 01:07:50,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 01:07:50,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 01:07:50,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 01:07:49" (1/3) ... [2021-03-26 01:07:50,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6603e93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:07:50, skipping insertion in model container [2021-03-26 01:07:50,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:07:50" (2/3) ... [2021-03-26 01:07:50,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6603e93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:07:50, skipping insertion in model container [2021-03-26 01:07:50,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:07:50" (3/3) ... [2021-03-26 01:07:50,713 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2021-03-26 01:07:50,718 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 01:07:50,721 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-26 01:07:50,722 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 01:07:50,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,740 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,740 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,744 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,744 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,744 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 01:07:50,747 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-26 01:07:50,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-26 01:07:50,779 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 01:07:50,779 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 01:07:50,779 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 01:07:50,779 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 01:07:50,779 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 01:07:50,779 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 01:07:50,779 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 01:07:50,779 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 01:07:50,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 182 flow [2021-03-26 01:07:50,816 INFO L129 PetriNetUnfolder]: 4/98 cut-off events. [2021-03-26 01:07:50,816 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 01:07:50,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 98 events. 4/98 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-03-26 01:07:50,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 182 flow [2021-03-26 01:07:50,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 72 transitions, 150 flow [2021-03-26 01:07:50,823 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 01:07:50,833 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 72 transitions, 150 flow [2021-03-26 01:07:50,835 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 72 transitions, 150 flow [2021-03-26 01:07:50,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 72 transitions, 150 flow [2021-03-26 01:07:50,848 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-03-26 01:07:50,848 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 01:07:50,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 72 events. 1/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-26 01:07:50,850 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-26 01:07:52,585 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-26 01:07:52,837 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-03-26 01:07:53,237 INFO L154 LiptonReduction]: Checked pairs total: 125 [2021-03-26 01:07:53,237 INFO L156 LiptonReduction]: Total number of compositions: 53 [2021-03-26 01:07:53,239 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2417 [2021-03-26 01:07:53,245 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-26 01:07:53,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 01:07:53,245 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 01:07:53,246 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 01:07:53,246 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 01:07:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 01:07:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash 298334778, now seen corresponding path program 1 times [2021-03-26 01:07:53,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 01:07:53,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32927318] [2021-03-26 01:07:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 01:07:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 01:07:53,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 01:07:53,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 01:07:53,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 01:07:53,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 01:07:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 01:07:53,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32927318] [2021-03-26 01:07:53,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 01:07:53,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 01:07:53,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594138839] [2021-03-26 01:07:53,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 01:07:53,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 01:07:53,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 01:07:53,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 01:07:53,486 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 140 [2021-03-26 01:07:53,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-03-26 01:07:53,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 01:07:53,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 140 [2021-03-26 01:07:53,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 01:07:53,503 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 01:07:53,503 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 01:07:53,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 21 events. 0/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 01:07:53,504 INFO L132 encePairwiseOnDemand]: 134/140 looper letters, 2 selfloop transitions, 4 changer transitions 0/21 dead transitions. [2021-03-26 01:07:53,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 60 flow [2021-03-26 01:07:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 01:07:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 01:07:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2021-03-26 01:07:53,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-03-26 01:07:53,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2021-03-26 01:07:53,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2021-03-26 01:07:53,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 01:07:53,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2021-03-26 01:07:53,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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) [2021-03-26 01:07:53,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 01:07:53,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-26 01:07:53,528 INFO L185 Difference]: Start difference. First operand has 27 places, 24 transitions, 54 flow. Second operand 3 states and 344 transitions. [2021-03-26 01:07:53,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 60 flow [2021-03-26 01:07:53,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 01:07:53,531 INFO L241 Difference]: Finished difference. Result has 25 places, 21 transitions, 52 flow [2021-03-26 01:07:53,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2021-03-26 01:07:53,533 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-03-26 01:07:53,534 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 01:07:53,534 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 25 places, 21 transitions, 52 flow [2021-03-26 01:07:53,534 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 25 places, 21 transitions, 52 flow [2021-03-26 01:07:53,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 52 flow [2021-03-26 01:07:53,537 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-26 01:07:53,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 01:07:53,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-26 01:07:53,538 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 01:07:54,336 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-03-26 01:07:54,438 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-03-26 01:07:54,761 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-26 01:07:54,886 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-03-26 01:07:55,012 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-26 01:07:55,152 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-03-26 01:07:55,154 INFO L154 LiptonReduction]: Checked pairs total: 35 [2021-03-26 01:07:55,154 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-26 01:07:55,155 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1621 [2021-03-26 01:07:55,156 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 28 flow [2021-03-26 01:07:55,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-03-26 01:07:55,156 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 01:07:55,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 01:07:55,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 01:07:55,157 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 01:07:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 01:07:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1402922177, now seen corresponding path program 1 times [2021-03-26 01:07:55,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 01:07:55,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486480158] [2021-03-26 01:07:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 01:07:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 01:07:55,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 01:07:55,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 01:07:55,235 INFO L142 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-03-26 01:07:55,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 01:07:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 01:07:55,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486480158] [2021-03-26 01:07:55,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 01:07:55,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 01:07:55,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204857528] [2021-03-26 01:07:55,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 01:07:55,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 01:07:55,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 01:07:55,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 01:07:55,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 153 [2021-03-26 01:07:55,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2021-03-26 01:07:55,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 01:07:55,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 153 [2021-03-26 01:07:55,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 01:07:55,253 INFO L129 PetriNetUnfolder]: 3/13 cut-off events. [2021-03-26 01:07:55,253 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 01:07:55,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 13 events. 3/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 3 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 17. Up to 12 conditions per place. [2021-03-26 01:07:55,253 INFO L132 encePairwiseOnDemand]: 151/153 looper letters, 4 selfloop transitions, 0 changer transitions 2/7 dead transitions. [2021-03-26 01:07:55,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 30 flow [2021-03-26 01:07:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-26 01:07:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-26 01:07:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2021-03-26 01:07:55,255 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7091503267973857 [2021-03-26 01:07:55,255 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 217 transitions. [2021-03-26 01:07:55,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 217 transitions. [2021-03-26 01:07:55,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 01:07:55,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 217 transitions. [2021-03-26 01:07:55,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 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) [2021-03-26 01:07:55,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-03-26 01:07:55,258 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-03-26 01:07:55,258 INFO L185 Difference]: Start difference. First operand has 13 places, 9 transitions, 28 flow. Second operand 2 states and 217 transitions. [2021-03-26 01:07:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 30 flow [2021-03-26 01:07:55,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 7 transitions, 26 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 01:07:55,259 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 11 flow [2021-03-26 01:07:55,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=11, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-26 01:07:55,259 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-26 01:07:55,259 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 01:07:55,259 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 5 transitions, 11 flow [2021-03-26 01:07:55,260 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 5 transitions, 11 flow [2021-03-26 01:07:55,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 7 places, 5 transitions, 11 flow [2021-03-26 01:07:55,261 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 01:07:55,261 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 01:07:55,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 01:07:55,261 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-26 01:07:55,266 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 01:07:55,266 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 01:07:55,266 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 01:07:55,267 INFO L480 AbstractCegarLoop]: Abstraction has has 7 places, 5 transitions, 11 flow [2021-03-26 01:07:55,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2021-03-26 01:07:55,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 01:07:55,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-26 01:07:55,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 01:07:55,268 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 01:07:55,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 01:07:55,268 INFO L82 PathProgramCache]: Analyzing trace with hash 9970178, now seen corresponding path program 1 times [2021-03-26 01:07:55,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 01:07:55,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821086748] [2021-03-26 01:07:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 01:07:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 01:07:55,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 01:07:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 01:07:55,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 01:07:55,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 01:07:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 01:07:55,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821086748] [2021-03-26 01:07:55,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 01:07:55,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 01:07:55,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974884468] [2021-03-26 01:07:55,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 01:07:55,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 01:07:55,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 01:07:55,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 01:07:55,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 153 [2021-03-26 01:07:55,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 5 transitions, 11 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2021-03-26 01:07:55,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 01:07:55,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 153 [2021-03-26 01:07:55,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 01:07:55,332 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 01:07:55,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 01:07:55,333 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-26 01:07:55,333 INFO L132 encePairwiseOnDemand]: 150/153 looper letters, 2 selfloop transitions, 2 changer transitions 1/6 dead transitions. [2021-03-26 01:07:55,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 6 transitions, 23 flow [2021-03-26 01:07:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 01:07:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 01:07:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-03-26 01:07:55,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2021-03-26 01:07:55,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-03-26 01:07:55,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-03-26 01:07:55,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 01:07:55,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-03-26 01:07:55,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2021-03-26 01:07:55,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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) [2021-03-26 01:07:55,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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) [2021-03-26 01:07:55,341 INFO L185 Difference]: Start difference. First operand has 7 places, 5 transitions, 11 flow. Second operand 3 states and 321 transitions. [2021-03-26 01:07:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 6 transitions, 23 flow [2021-03-26 01:07:55,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 23 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 01:07:55,341 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 19 flow [2021-03-26 01:07:55,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-03-26 01:07:55,342 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -17 predicate places. [2021-03-26 01:07:55,342 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 01:07:55,342 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-26 01:07:55,342 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 5 transitions, 19 flow [2021-03-26 01:07:55,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 10 places, 5 transitions, 19 flow [2021-03-26 01:07:55,344 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 01:07:55,344 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 01:07:55,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 01:07:55,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 01:07:55,345 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 01:07:55,345 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 01:07:55,345 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-03-26 01:07:55,346 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 19 flow [2021-03-26 01:07:55,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2021-03-26 01:07:55,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 01:07:55,346 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-26 01:07:55,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 01:07:55,346 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 01:07:55,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 01:07:55,346 INFO L82 PathProgramCache]: Analyzing trace with hash 309080250, now seen corresponding path program 1 times [2021-03-26 01:07:55,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 01:07:55,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495071657] [2021-03-26 01:07:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 01:07:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 01:07:55,375 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 01:07:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 01:07:55,388 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 01:07:55,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 01:07:55,411 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 01:07:55,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 01:07:55,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 01:07:55 BasicIcfg [2021-03-26 01:07:55,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 01:07:55,437 INFO L168 Benchmark]: Toolchain (without parser) took 6196.48 ms. Allocated memory was 255.9 MB in the beginning and 427.8 MB in the end (delta: 172.0 MB). Free memory was 231.4 MB in the beginning and 195.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 208.3 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,438 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 01:07:55,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 840.92 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 231.3 MB in the beginning and 268.2 MB in the end (delta: -36.9 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.27 ms. Allocated memory is still 352.3 MB. Free memory was 268.2 MB in the beginning and 265.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,439 INFO L168 Benchmark]: Boogie Preprocessor took 68.30 ms. Allocated memory is still 352.3 MB. Free memory was 265.2 MB in the beginning and 329.7 MB in the end (delta: -64.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,440 INFO L168 Benchmark]: RCFGBuilder took 479.77 ms. Allocated memory is still 352.3 MB. Free memory was 329.7 MB in the beginning and 288.3 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,440 INFO L168 Benchmark]: TraceAbstraction took 4728.04 ms. Allocated memory was 352.3 MB in the beginning and 427.8 MB in the end (delta: 75.5 MB). Free memory was 288.3 MB in the beginning and 195.0 MB in the end (delta: 93.4 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.0 GB. [2021-03-26 01:07:55,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 840.92 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 231.3 MB in the beginning and 268.2 MB in the end (delta: -36.9 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 66.27 ms. Allocated memory is still 352.3 MB. Free memory was 268.2 MB in the beginning and 265.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 68.30 ms. Allocated memory is still 352.3 MB. Free memory was 265.2 MB in the beginning and 329.7 MB in the end (delta: -64.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.0 GB. * RCFGBuilder took 479.77 ms. Allocated memory is still 352.3 MB. Free memory was 329.7 MB in the beginning and 288.3 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4728.04 ms. Allocated memory was 352.3 MB in the beginning and 427.8 MB in the end (delta: 75.5 MB). Free memory was 288.3 MB in the beginning and 195.0 MB in the end (delta: 93.4 MB). Peak memory consumption was 168.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2401.9ms, 75 PlacesBefore, 27 PlacesAfterwards, 72 TransitionsBefore, 24 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, 125 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 103, positive: 99, positive conditional: 99, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 92, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 92, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 92, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 103, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 92, unknown conditional: 92, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1620.3ms, 25 PlacesBefore, 13 PlacesAfterwards, 21 TransitionsBefore, 9 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 35 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 16, positive conditional: 16, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 13, positive conditional: 3, positive unconditional: 10, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, positive: 13, positive conditional: 3, positive unconditional: 10, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 39, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 39, negative conditional: 16, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 21, unknown conditional: 21, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 2, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3ms, 10 PlacesBefore, 7 PlacesAfterwards, 5 TransitionsBefore, 5 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4ms, 10 PlacesBefore, 10 PlacesAfterwards, 5 TransitionsBefore, 5 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 3, Negative conditional cache size: 3, Negative unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1709] 0 pdev = 1 [L1695] COND FALSE 0 !(!expression) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={3:0}, pdev=1, t1={7:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={3:0}, pdev=2, t1={7:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\result={0:0}, arg={0:0}, arg={0:0}, mutex={3:0}, pdev=6, t1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 83 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4636.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 91.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2464.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 6.7ms SsaConstructionTime, 63.0ms SatisfiabilityAnalysisTime, 171.4ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 incorrect! Received shutdown request...