/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:52:09,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:52:09,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:52:09,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:52:09,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:52:09,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:52:09,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:52:09,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:52:09,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:52:09,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:52:09,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:52:09,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:52:09,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:52:09,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:52:09,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:52:09,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:52:09,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:52:09,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:52:09,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:52:09,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:52:09,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:52:09,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:52:09,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:52:09,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:52:09,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:52:09,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:52:09,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:52:09,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:52:09,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:52:09,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:52:09,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:52:09,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:52:09,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:52:09,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:52:09,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:52:09,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:52:09,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:52:09,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:52:09,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:52:09,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:52:09,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:52:09,207 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-FA-VariableLbe-McrStrategy.epf [2020-04-18 11:52:09,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:52:09,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:52:09,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:52:09,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:52:09,246 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:52:09,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:52:09,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:52:09,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:52:09,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:52:09,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:52:09,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:52:09,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:52:09,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:52:09,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:52:09,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:52:09,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:52:09,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:52:09,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:52:09,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:52:09,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:52:09,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:52:09,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:52:09,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:52:09,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:52:09,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:52:09,254 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:52:09,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:52:09,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:52:09,255 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:52:09,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:52:09,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:52:09,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:52:09,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:52:09,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:52:09,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:52:09,573 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:52:09,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2020-04-18 11:52:09,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d523f77/add592489337453a8a9020d97bea09ad/FLAG22055c470 [2020-04-18 11:52:10,143 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:52:10,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2020-04-18 11:52:10,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d523f77/add592489337453a8a9020d97bea09ad/FLAG22055c470 [2020-04-18 11:52:10,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18d523f77/add592489337453a8a9020d97bea09ad [2020-04-18 11:52:10,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:52:10,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:52:10,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:10,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:52:10,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:52:10,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:10" (1/1) ... [2020-04-18 11:52:10,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38cc35d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:10, skipping insertion in model container [2020-04-18 11:52:10,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:52:10" (1/1) ... [2020-04-18 11:52:10,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:52:10,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:52:11,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:11,127 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:52:11,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:52:11,292 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:52:11,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11 WrapperNode [2020-04-18 11:52:11,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:52:11,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:11,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:52:11,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:52:11,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:52:11,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:52:11,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:52:11,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:52:11,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (1/1) ... [2020-04-18 11:52:11,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:52:11,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:52:11,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:52:11,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:52:11,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (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 [2020-04-18 11:52:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:52:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-04-18 11:52:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-04-18 11:52:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-04-18 11:52:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-04-18 11:52:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:52:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 11:52:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:52:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:52:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 11:52:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:52:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:52:11,430 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:52:11,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:52:11,864 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 11:52:11,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:11 BoogieIcfgContainer [2020-04-18 11:52:11,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:52:11,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:52:11,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:52:11,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:52:11,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:52:10" (1/3) ... [2020-04-18 11:52:11,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bcc9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:11, skipping insertion in model container [2020-04-18 11:52:11,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:52:11" (2/3) ... [2020-04-18 11:52:11,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bcc9c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:52:11, skipping insertion in model container [2020-04-18 11:52:11,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:52:11" (3/3) ... [2020-04-18 11:52:11,880 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2020-04-18 11:52:11,891 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:52:11,891 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:52:11,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:52:11,900 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:52:11,928 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,928 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,928 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,929 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,929 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,930 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,930 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,930 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,930 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,931 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,931 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,931 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,932 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,932 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,932 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,933 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,933 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,934 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,934 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,934 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,934 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,935 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,935 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,936 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,937 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,937 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,942 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,943 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,943 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,944 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,945 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,945 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,945 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,945 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,953 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,953 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,954 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,954 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,954 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,955 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:52:11,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-04-18 11:52:12,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:52:12,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:52:12,007 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:52:12,007 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:52:12,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:52:12,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:52:12,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:52:12,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:52:12,024 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 78 transitions, 178 flow [2020-04-18 11:52:12,026 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-04-18 11:52:12,075 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 11:52:12,076 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:12,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-04-18 11:52:12,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 78 transitions, 178 flow [2020-04-18 11:52:12,124 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2020-04-18 11:52:12,124 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-04-18 11:52:12,125 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2020-04-18 11:52:12,127 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 680 [2020-04-18 11:52:12,128 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:52:13,639 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-04-18 11:52:14,200 WARN L192 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2020-04-18 11:52:14,378 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-04-18 11:52:14,417 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1930 [2020-04-18 11:52:14,417 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-18 11:52:14,422 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 35 places, 30 transitions, 82 flow [2020-04-18 11:52:14,445 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 198 states. [2020-04-18 11:52:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-04-18 11:52:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:14,468 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:14,469 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:14,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 1 times [2020-04-18 11:52:14,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:14,485 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1285275317] [2020-04-18 11:52:14,503 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:14,525 INFO L259 McrAutomatonBuilder]: Finished intersection with 176 states and 373 transitions. [2020-04-18 11:52:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-04-18 11:52:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:14,534 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash 535203952, now seen corresponding path program 2 times [2020-04-18 11:52:14,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:14,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772537038] [2020-04-18 11:52:14,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:14,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772537038] [2020-04-18 11:52:14,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:14,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:14,822 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:14,826 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:14,860 INFO L259 McrAutomatonBuilder]: Finished intersection with 79 states and 140 transitions. [2020-04-18 11:52:14,861 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:14,877 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:52:14,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:14,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:14,883 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-04-18 11:52:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:14,930 INFO L93 Difference]: Finished difference Result 251 states and 513 transitions. [2020-04-18 11:52:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 513 transitions. [2020-04-18 11:52:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:14,938 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:14,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1346228208, now seen corresponding path program 3 times [2020-04-18 11:52:14,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:14,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052897933] [2020-04-18 11:52:14,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052897933] [2020-04-18 11:52:15,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:15,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 11:52:15,080 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:15,085 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,099 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 101 transitions. [2020-04-18 11:52:15,099 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:15,125 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:52:15,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:52:15,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:52:15,126 INFO L87 Difference]: Start difference. First operand 251 states and 513 transitions. Second operand 5 states. [2020-04-18 11:52:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,177 INFO L93 Difference]: Finished difference Result 251 states and 513 transitions. [2020-04-18 11:52:15,177 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 513 transitions. [2020-04-18 11:52:15,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:15,179 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1285275317] [2020-04-18 11:52:15,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:15,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-04-18 11:52:15,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1285275317] [2020-04-18 11:52:15,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 11:52:15,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:15,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:52:15,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-04-18 11:52:15,192 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 6 states. [2020-04-18 11:52:15,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,320 INFO L93 Difference]: Finished difference Result 150 states and 253 transitions. [2020-04-18 11:52:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-18 11:52:15,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-04-18 11:52:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:15,333 INFO L225 Difference]: With dead ends: 150 [2020-04-18 11:52:15,333 INFO L226 Difference]: Without dead ends: 122 [2020-04-18 11:52:15,337 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:52:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-04-18 11:52:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-04-18 11:52:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-04-18 11:52:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 201 transitions. [2020-04-18 11:52:15,383 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 201 transitions. Word has length 25 [2020-04-18 11:52:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:15,383 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 201 transitions. [2020-04-18 11:52:15,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 11:52:15,384 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 201 transitions. [2020-04-18 11:52:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:15,385 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:52:15,385 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:52:15,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:52:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,386 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 1 times [2020-04-18 11:52:15,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:52:15,386 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1236925583] [2020-04-18 11:52:15,387 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,394 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 361 transitions. [2020-04-18 11:52:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-04-18 11:52:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:15,397 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:52:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1548960698, now seen corresponding path program 2 times [2020-04-18 11:52:15,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:15,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159343837] [2020-04-18 11:52:15,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159343837] [2020-04-18 11:52:15,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:15,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:52:15,446 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:15,451 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,469 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 98 transitions. [2020-04-18 11:52:15,470 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:15,479 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 11:52:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:52:15,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:52:15,480 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-04-18 11:52:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,507 INFO L93 Difference]: Finished difference Result 239 states and 489 transitions. [2020-04-18 11:52:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 489 transitions. [2020-04-18 11:52:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:15,508 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:52:15,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,509 INFO L82 PathProgramCache]: Analyzing trace with hash 352163958, now seen corresponding path program 3 times [2020-04-18 11:52:15,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:15,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423574224] [2020-04-18 11:52:15,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423574224] [2020-04-18 11:52:15,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:15,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:52:15,641 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:15,644 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,650 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 53 transitions. [2020-04-18 11:52:15,651 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:15,687 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:52:15,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:52:15,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:52:15,688 INFO L87 Difference]: Start difference. First operand 239 states and 489 transitions. Second operand 6 states. [2020-04-18 11:52:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:15,742 INFO L93 Difference]: Finished difference Result 370 states and 746 transitions. [2020-04-18 11:52:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 746 transitions. [2020-04-18 11:52:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-04-18 11:52:15,743 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:52:15,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:52:15,744 INFO L82 PathProgramCache]: Analyzing trace with hash 422236062, now seen corresponding path program 4 times [2020-04-18 11:52:15,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:52:15,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265841335] [2020-04-18 11:52:15,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:52:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:52:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:52:15,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265841335] [2020-04-18 11:52:15,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:52:15,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:52:15,892 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:52:15,896 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:52:15,906 INFO L259 McrAutomatonBuilder]: Finished intersection with 48 states and 69 transitions. [2020-04-18 11:52:15,906 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:52:15,944 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 11:52:15,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 11:52:15,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-04-18 11:52:15,946 INFO L87 Difference]: Start difference. First operand 370 states and 746 transitions. Second operand 6 states. [2020-04-18 11:52:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:16,013 INFO L93 Difference]: Finished difference Result 448 states and 904 transitions. [2020-04-18 11:52:16,013 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 904 transitions. [2020-04-18 11:52:16,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:16,017 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1236925583] [2020-04-18 11:52:16,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:52:16,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:52:16,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1236925583] [2020-04-18 11:52:16,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 11:52:16,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:52:16,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 11:52:16,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-04-18 11:52:16,020 INFO L87 Difference]: Start difference. First operand 122 states and 201 transitions. Second operand 9 states. [2020-04-18 11:52:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:52:16,212 INFO L93 Difference]: Finished difference Result 121 states and 200 transitions. [2020-04-18 11:52:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-04-18 11:52:16,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-04-18 11:52:16,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:52:16,213 INFO L225 Difference]: With dead ends: 121 [2020-04-18 11:52:16,213 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 11:52:16,215 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-04-18 11:52:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 11:52:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 11:52:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 11:52:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 11:52:16,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-04-18 11:52:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:52:16,216 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 11:52:16,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 11:52:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 11:52:16,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:52:16,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:52:16 BasicIcfg [2020-04-18 11:52:16,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:52:16,222 INFO L168 Benchmark]: Toolchain (without parser) took 5716.44 ms. Allocated memory was 139.5 MB in the beginning and 278.9 MB in the end (delta: 139.5 MB). Free memory was 102.9 MB in the beginning and 195.1 MB in the end (delta: -92.2 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,223 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.25 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 160.6 MB in the end (delta: -59.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.97 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 158.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,226 INFO L168 Benchmark]: Boogie Preprocessor took 25.40 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,227 INFO L168 Benchmark]: RCFGBuilder took 501.95 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 132.5 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,228 INFO L168 Benchmark]: TraceAbstraction took 4347.97 ms. Allocated memory was 203.4 MB in the beginning and 278.9 MB in the end (delta: 75.5 MB). Free memory was 132.5 MB in the beginning and 195.1 MB in the end (delta: -62.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-04-18 11:52:16,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.25 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 160.6 MB in the end (delta: -59.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.97 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 158.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.40 ms. Allocated memory is still 203.4 MB. Free memory was 158.4 MB in the beginning and 157.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 501.95 ms. Allocated memory is still 203.4 MB. Free memory was 156.4 MB in the beginning and 132.5 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4347.97 ms. Allocated memory was 203.4 MB in the beginning and 278.9 MB in the end (delta: 75.5 MB). Free memory was 132.5 MB in the beginning and 195.1 MB in the end (delta: -62.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.3s, 82 ProgramPointsBefore, 35 ProgramPointsAfterwards, 78 TransitionsBefore, 30 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 288 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1930 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 708]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 80 SDtfs, 67 SDslu, 257 SDs, 0 SdLazy, 149 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...