/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 12:43:25,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 12:43:25,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 12:43:25,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 12:43:25,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 12:43:25,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 12:43:25,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 12:43:25,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 12:43:25,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 12:43:25,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 12:43:25,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 12:43:25,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 12:43:25,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 12:43:25,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 12:43:25,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 12:43:25,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 12:43:25,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 12:43:25,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 12:43:25,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 12:43:25,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 12:43:25,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 12:43:25,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 12:43:25,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 12:43:25,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 12:43:25,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 12:43:25,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 12:43:25,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 12:43:25,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 12:43:25,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 12:43:25,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 12:43:25,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 12:43:25,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 12:43:25,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 12:43:25,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 12:43:25,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 12:43:25,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 12:43:25,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 12:43:25,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 12:43:25,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 12:43:25,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 12:43:25,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 12:43:25,186 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-RepeatedSemanticLbe.epf [2021-03-25 12:43:25,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 12:43:25,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 12:43:25,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 12:43:25,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 12:43:25,215 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 12:43:25,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 12:43:25,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 12:43:25,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 12:43:25,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 12:43:25,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 12:43:25,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 12:43:25,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 12:43:25,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 12:43:25,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 12:43:25,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 12:43:25,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 12:43:25,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 12:43:25,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 12:43:25,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 12:43:25,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 12:43:25,441 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 12:43:25,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 12:43:25,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e31c6286/144151844b134b5b958b82d2d720a791/FLAG9d1412422 [2021-03-25 12:43:25,921 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 12:43:25,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 12:43:25,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e31c6286/144151844b134b5b958b82d2d720a791/FLAG9d1412422 [2021-03-25 12:43:25,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e31c6286/144151844b134b5b958b82d2d720a791 [2021-03-25 12:43:25,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 12:43:25,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 12:43:25,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 12:43:25,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 12:43:25,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 12:43:25,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 12:43:25" (1/1) ... [2021-03-25 12:43:25,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b300a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:25, skipping insertion in model container [2021-03-25 12:43:25,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 12:43:25" (1/1) ... [2021-03-25 12:43:25,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 12:43:25,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 12:43:26,221 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/lazy01.i[31042,31055] [2021-03-25 12:43:26,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 12:43:26,235 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 12:43:26,269 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/lazy01.i[31042,31055] [2021-03-25 12:43:26,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 12:43:26,321 INFO L208 MainTranslator]: Completed translation [2021-03-25 12:43:26,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26 WrapperNode [2021-03-25 12:43:26,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 12:43:26,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 12:43:26,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 12:43:26,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 12:43:26,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 12:43:26,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 12:43:26,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 12:43:26,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 12:43:26,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (1/1) ... [2021-03-25 12:43:26,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 12:43:26,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 12:43:26,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 12:43:26,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 12:43:26,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (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 [2021-03-25 12:43:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 12:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 12:43:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 12:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 12:43:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 12:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 12:43:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 12:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 12:43:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 12:43:26,432 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 12:43:26,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 12:43:26,674 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 12:43:26,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:43:26 BoogieIcfgContainer [2021-03-25 12:43:26,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 12:43:26,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 12:43:26,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 12:43:26,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 12:43:26,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 12:43:25" (1/3) ... [2021-03-25 12:43:26,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbd4222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:43:26, skipping insertion in model container [2021-03-25 12:43:26,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 12:43:26" (2/3) ... [2021-03-25 12:43:26,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbd4222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 12:43:26, skipping insertion in model container [2021-03-25 12:43:26,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 12:43:26" (3/3) ... [2021-03-25 12:43:26,680 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-03-25 12:43:26,684 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 12:43:26,687 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 12:43:26,688 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 12:43:26,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,707 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,708 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,709 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,710 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,711 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,712 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,713 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,714 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,716 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,720 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,720 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,720 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,721 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,721 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,722 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,722 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,722 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 12:43:26,731 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-25 12:43:26,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 12:43:26,757 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 12:43:26,757 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 12:43:26,757 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 12:43:26,757 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 12:43:26,757 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 12:43:26,757 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 12:43:26,757 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 12:43:26,757 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 12:43:26,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 12:43:26,794 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-03-25 12:43:26,795 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 12:43:26,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2021-03-25 12:43:26,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 12:43:26,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-03-25 12:43:26,801 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:43:26,809 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 12:43:26,811 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 12:43:26,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-03-25 12:43:26,822 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-03-25 12:43:26,822 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 12:43:26,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 67 events. 2/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2021-03-25 12:43:26,824 INFO L142 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-25 12:43:27,993 INFO L154 LiptonReduction]: Checked pairs total: 1277 [2021-03-25 12:43:27,993 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 12:43:27,995 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1195 [2021-03-25 12:43:28,002 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 12:43:28,002 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 12:43:28,002 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:43:28,002 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:43:28,002 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:43:28,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:43:28,006 INFO L82 PathProgramCache]: Analyzing trace with hash -240498527, now seen corresponding path program 1 times [2021-03-25 12:43:28,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:43:28,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591608613] [2021-03-25 12:43:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:43:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:43:28,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:28,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:43:28,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:28,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:43:28,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591608613] [2021-03-25 12:43:28,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:43:28,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 12:43:28,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376050311] [2021-03-25 12:43:28,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 12:43:28,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:43:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 12:43:28,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 12:43:28,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 123 [2021-03-25 12:43:28,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 12:43:28,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:43:28,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 123 [2021-03-25 12:43:28,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:43:28,189 INFO L129 PetriNetUnfolder]: 15/72 cut-off events. [2021-03-25 12:43:28,190 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 12:43:28,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 72 events. 15/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 3 based on Foata normal form. 4/69 useless extension candidates. Maximal degree in co-relation 101. Up to 24 conditions per place. [2021-03-25 12:43:28,191 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 6 selfloop transitions, 3 changer transitions 2/32 dead transitions. [2021-03-25 12:43:28,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 105 flow [2021-03-25 12:43:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 12:43:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 12:43:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-03-25 12:43:28,199 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8726287262872628 [2021-03-25 12:43:28,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-03-25 12:43:28,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-03-25 12:43:28,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:43:28,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-03-25 12:43:28,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-03-25 12:43:28,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 12:43:28,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 12:43:28,209 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 81 flow. Second operand 3 states and 322 transitions. [2021-03-25 12:43:28,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 105 flow [2021-03-25 12:43:28,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 92 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 12:43:28,212 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 81 flow [2021-03-25 12:43:28,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-03-25 12:43:28,213 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2021-03-25 12:43:28,213 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:43:28,213 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 12:43:28,214 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 12:43:28,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 81 flow [2021-03-25 12:43:28,218 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 12:43:28,218 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 12:43:28,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 5/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 1 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2021-03-25 12:43:28,219 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 12:43:28,787 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-25 12:43:28,787 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:43:28,788 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 575 [2021-03-25 12:43:28,788 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 75 flow [2021-03-25 12:43:28,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 12:43:28,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:43:28,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:43:28,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 12:43:28,789 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:43:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:43:28,790 INFO L82 PathProgramCache]: Analyzing trace with hash 809142188, now seen corresponding path program 1 times [2021-03-25 12:43:28,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:43:28,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583231303] [2021-03-25 12:43:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:43:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:43:28,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:28,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:43:28,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 12:43:28,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:28,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:43:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:43:28,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583231303] [2021-03-25 12:43:28,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:43:28,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:43:28,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041511513] [2021-03-25 12:43:28,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 12:43:28,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:43:28,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 12:43:28,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 12:43:28,846 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 126 [2021-03-25 12:43:28,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 12:43:28,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:43:28,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 126 [2021-03-25 12:43:28,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:43:28,860 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 12:43:28,860 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 12:43:28,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 42 events. 2/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 0 based on Foata normal form. 9/50 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2021-03-25 12:43:28,861 INFO L132 encePairwiseOnDemand]: 121/126 looper letters, 1 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 12:43:28,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 87 flow [2021-03-25 12:43:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 12:43:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 12:43:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2021-03-25 12:43:28,862 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-25 12:43:28,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2021-03-25 12:43:28,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2021-03-25 12:43:28,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:43:28,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2021-03-25 12:43:28,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2021-03-25 12:43:28,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 12:43:28,865 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 12:43:28,865 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 75 flow. Second operand 3 states and 273 transitions. [2021-03-25 12:43:28,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 87 flow [2021-03-25 12:43:28,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 12:43:28,866 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 82 flow [2021-03-25 12:43:28,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 12:43:28,866 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2021-03-25 12:43:28,867 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:43:28,867 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 12:43:28,867 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 12:43:28,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 82 flow [2021-03-25 12:43:28,880 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 12:43:28,880 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 12:43:28,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2021-03-25 12:43:28,881 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 12:43:29,381 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 12:43:29,526 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 12:43:29,840 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 12:43:29,976 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 12:43:29,979 INFO L154 LiptonReduction]: Checked pairs total: 45 [2021-03-25 12:43:29,979 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 12:43:29,979 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1112 [2021-03-25 12:43:29,979 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 78 flow [2021-03-25 12:43:29,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 12:43:29,980 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:43:29,980 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:43:29,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 12:43:29,980 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:43:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:43:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash -441610140, now seen corresponding path program 1 times [2021-03-25 12:43:29,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:43:29,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746706954] [2021-03-25 12:43:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:43:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:43:30,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 12:43:30,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:30,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:43:30,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746706954] [2021-03-25 12:43:30,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:43:30,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:43:30,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562879506] [2021-03-25 12:43:30,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 12:43:30,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:43:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 12:43:30,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 12:43:30,023 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2021-03-25 12:43:30,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 12:43:30,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:43:30,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2021-03-25 12:43:30,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:43:30,043 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 12:43:30,043 INFO L130 PetriNetUnfolder]: For 24/49 co-relation queries the response was YES. [2021-03-25 12:43:30,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 2/30 cut-off events. For 24/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 74 event pairs, 0 based on Foata normal form. 6/36 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 12:43:30,044 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 4 selfloop transitions, 5 changer transitions 2/24 dead transitions. [2021-03-25 12:43:30,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 112 flow [2021-03-25 12:43:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 12:43:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 12:43:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2021-03-25 12:43:30,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7985074626865671 [2021-03-25 12:43:30,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2021-03-25 12:43:30,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2021-03-25 12:43:30,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:43:30,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2021-03-25 12:43:30,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2021-03-25 12:43:30,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 12:43:30,049 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 12:43:30,050 INFO L185 Difference]: Start difference. First operand has 26 places, 21 transitions, 78 flow. Second operand 4 states and 428 transitions. [2021-03-25 12:43:30,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 112 flow [2021-03-25 12:43:30,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 12:43:30,050 INFO L241 Difference]: Finished difference. Result has 29 places, 21 transitions, 85 flow [2021-03-25 12:43:30,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2021-03-25 12:43:30,051 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2021-03-25 12:43:30,051 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:43:30,051 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 12:43:30,051 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 12:43:30,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 21 transitions, 85 flow [2021-03-25 12:43:30,054 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 12:43:30,054 INFO L130 PetriNetUnfolder]: For 17/26 co-relation queries the response was YES. [2021-03-25 12:43:30,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 2/28 cut-off events. For 17/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 57 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 7 conditions per place. [2021-03-25 12:43:30,054 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 12:43:30,178 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-25 12:43:30,178 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 12:43:30,178 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 127 [2021-03-25 12:43:30,179 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 85 flow [2021-03-25 12:43:30,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 12:43:30,179 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:43:30,180 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:43:30,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 12:43:30,180 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:43:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:43:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1734886501, now seen corresponding path program 1 times [2021-03-25 12:43:30,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:43:30,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839636026] [2021-03-25 12:43:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:43:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 12:43:30,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:30,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:30,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 12:43:30,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 12:43:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 12:43:30,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839636026] [2021-03-25 12:43:30,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 12:43:30,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 12:43:30,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536856589] [2021-03-25 12:43:30,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 12:43:30,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 12:43:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 12:43:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 12:43:30,218 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 137 [2021-03-25 12:43:30,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 12:43:30,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 12:43:30,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 137 [2021-03-25 12:43:30,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 12:43:30,247 INFO L129 PetriNetUnfolder]: 2/25 cut-off events. [2021-03-25 12:43:30,247 INFO L130 PetriNetUnfolder]: For 51/113 co-relation queries the response was YES. [2021-03-25 12:43:30,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 25 events. 2/25 cut-off events. For 51/113 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 9/33 useless extension candidates. Maximal degree in co-relation 44. Up to 7 conditions per place. [2021-03-25 12:43:30,248 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 5 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-03-25 12:43:30,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 116 flow [2021-03-25 12:43:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 12:43:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 12:43:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2021-03-25 12:43:30,250 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.762043795620438 [2021-03-25 12:43:30,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2021-03-25 12:43:30,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2021-03-25 12:43:30,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 12:43:30,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2021-03-25 12:43:30,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2021-03-25 12:43:30,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 12:43:30,253 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 12:43:30,254 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 85 flow. Second operand 5 states and 522 transitions. [2021-03-25 12:43:30,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 116 flow [2021-03-25 12:43:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 111 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 12:43:30,255 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 97 flow [2021-03-25 12:43:30,255 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2021-03-25 12:43:30,255 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2021-03-25 12:43:30,255 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 12:43:30,255 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 12:43:30,256 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 12:43:30,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 20 transitions, 97 flow [2021-03-25 12:43:30,258 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-25 12:43:30,258 INFO L130 PetriNetUnfolder]: For 32/49 co-relation queries the response was YES. [2021-03-25 12:43:30,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 2/24 cut-off events. For 32/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 39 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 41. Up to 5 conditions per place. [2021-03-25 12:43:30,258 INFO L142 LiptonReduction]: Number of co-enabled transitions 74 [2021-03-25 12:43:30,301 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-25 12:43:30,302 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 12:43:30,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 47 [2021-03-25 12:43:30,302 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 95 flow [2021-03-25 12:43:30,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 12:43:30,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 12:43:30,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 12:43:30,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 12:43:30,303 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 12:43:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 12:43:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1734884300, now seen corresponding path program 1 times [2021-03-25 12:43:30,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 12:43:30,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108904716] [2021-03-25 12:43:30,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 12:43:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 12:43:30,330 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 12:43:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 12:43:30,346 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 12:43:30,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 12:43:30,366 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 12:43:30,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 12:43:30,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 12:43:30 BasicIcfg [2021-03-25 12:43:30,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 12:43:30,389 INFO L168 Benchmark]: Toolchain (without parser) took 4440.82 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 235.3 MB in the beginning and 342.7 MB in the end (delta: -107.4 MB). Peak memory consumption was 61.3 MB. Max. memory is 16.0 GB. [2021-03-25 12:43:30,390 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 12:43:30,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.45 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 235.3 MB in the beginning and 315.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 12:43:30,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.79 ms. Allocated memory is still 352.3 MB. Free memory was 315.8 MB in the beginning and 314.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 12:43:30,391 INFO L168 Benchmark]: Boogie Preprocessor took 20.78 ms. Allocated memory is still 352.3 MB. Free memory was 314.4 MB in the beginning and 313.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 12:43:30,391 INFO L168 Benchmark]: RCFGBuilder took 299.23 ms. Allocated memory is still 352.3 MB. Free memory was 313.0 MB in the beginning and 289.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 12:43:30,391 INFO L168 Benchmark]: TraceAbstraction took 3712.21 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 289.2 MB in the beginning and 342.7 MB in the end (delta: -53.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-25 12:43:30,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 373.45 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 235.3 MB in the beginning and 315.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.79 ms. Allocated memory is still 352.3 MB. Free memory was 315.8 MB in the beginning and 314.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.78 ms. Allocated memory is still 352.3 MB. Free memory was 314.4 MB in the beginning and 313.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 299.23 ms. Allocated memory is still 352.3 MB. Free memory was 313.0 MB in the beginning and 289.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3712.21 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 289.2 MB in the beginning and 342.7 MB in the end (delta: -53.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1182.4ms, 72 PlacesBefore, 37 PlacesAfterwards, 65 TransitionsBefore, 30 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 1277 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 790, positive: 751, positive conditional: 0, positive unconditional: 751, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 619, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 619, positive: 594, positive conditional: 0, positive unconditional: 594, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 619, positive: 578, positive conditional: 0, positive unconditional: 578, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 115, positive: 51, positive conditional: 0, positive unconditional: 51, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 790, positive: 157, positive conditional: 0, positive unconditional: 157, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 619, unknown conditional: 0, unknown unconditional: 619] , Statistics on independence cache: Total cache size (in pairs): 75, Positive cache size: 67, Positive conditional cache size: 0, Positive unconditional cache size: 67, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 573.7ms, 34 PlacesBefore, 30 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 208 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 366 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 132, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 11, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 132, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1111.6ms, 31 PlacesBefore, 26 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 45 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 45, positive conditional: 0, positive unconditional: 45, 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: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 45, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 127.1ms, 29 PlacesBefore, 28 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 14, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 14, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 14, positive: 14, positive conditional: 0, positive unconditional: 14, 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: 17, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.2ms, 33 PlacesBefore, 31 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 74 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 5, positive: 5, positive conditional: 0, positive unconditional: 5, 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): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={10:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L707] 1 data++ [L709] 1 return 0; [L714] 2 data+=2 [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 3612.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 144.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1241.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 55 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 15, 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: 8.4ms SsaConstructionTime, 65.3ms SatisfiabilityAnalysisTime, 160.1ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...