/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:30:58,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:30:58,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:30:58,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:30:58,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:30:58,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:30:58,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:30:58,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:30:58,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:30:58,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:30:58,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:30:58,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:30:58,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:30:58,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:30:58,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:30:58,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:30:58,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:30:58,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:30:58,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:30:58,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:30:58,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:30:58,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:30:58,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:30:58,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:30:58,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:30:58,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:30:58,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:30:58,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:30:58,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:30:58,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:30:58,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:30:58,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:30:58,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:30:58,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:30:58,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:30:58,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:30:58,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 12:30:58,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:30:58,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:30:58,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:30:58,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:30:58,173 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:30:58,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:30:58,173 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:30:58,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:30:58,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:30:58,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:30:58,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:30:58,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:30:58,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:30:58,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:30:58,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:30:58,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:30:58,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:30:58,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:30:58,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:30:58,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:30:58,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:30:58,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:30:58,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:30:58,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:30:58,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:30:58,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:30:58,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:30:58,179 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 12:30:58,179 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:30:58,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:30:58,180 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 12:30:58,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:30:58,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:30:58,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:30:58,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:30:58,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:30:58,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-16 12:30:58,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452a6c2d0/50d798dc761d43048d58525408be60a4/FLAG5981bd7c5 [2020-10-16 12:30:59,118 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:30:59,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-atomic/read_write_lock-2.i [2020-10-16 12:30:59,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452a6c2d0/50d798dc761d43048d58525408be60a4/FLAG5981bd7c5 [2020-10-16 12:30:59,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/452a6c2d0/50d798dc761d43048d58525408be60a4 [2020-10-16 12:30:59,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:30:59,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:30:59,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:30:59,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:30:59,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:30:59,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:59" (1/1) ... [2020-10-16 12:30:59,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2724721d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:30:59, skipping insertion in model container [2020-10-16 12:30:59,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:30:59" (1/1) ... [2020-10-16 12:30:59,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:30:59,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:30:59,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:30:59,818 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:30:59,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:31:00,051 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:31:00,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00 WrapperNode [2020-10-16 12:31:00,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:31:00,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:31:00,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:31:00,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:31:00,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:31:00,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:31:00,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:31:00,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:31:00,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... [2020-10-16 12:31:00,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:31:00,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:31:00,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:31:00,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:31:00,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:31:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:31:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:31:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2020-10-16 12:31:00,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2020-10-16 12:31:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:31:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:31:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:31:00,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:31:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2020-10-16 12:31:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2020-10-16 12:31:00,206 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:31:00,652 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:31:00,653 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-16 12:31:00,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:31:00 BoogieIcfgContainer [2020-10-16 12:31:00,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:31:00,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:31:00,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:31:00,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:31:00,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:30:59" (1/3) ... [2020-10-16 12:31:00,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547282ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:31:00, skipping insertion in model container [2020-10-16 12:31:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:00" (2/3) ... [2020-10-16 12:31:00,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547282ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:31:00, skipping insertion in model container [2020-10-16 12:31:00,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:31:00" (3/3) ... [2020-10-16 12:31:00,664 INFO L111 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2020-10-16 12:31:00,675 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:31:00,676 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:31:00,683 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:31:00,684 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:31:00,715 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,715 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,716 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,716 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,716 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,717 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,717 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,717 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,718 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,718 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,718 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,719 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,719 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,720 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,720 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,720 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,720 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,721 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,721 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,721 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,722 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,722 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,722 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,723 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,723 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,723 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,724 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,724 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,724 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,725 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,725 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,725 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,726 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,726 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,726 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,726 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,727 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,727 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,727 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,727 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,728 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,728 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,732 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,732 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,732 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,732 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,733 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,733 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,742 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,742 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,742 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,743 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,743 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,743 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,743 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork1_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,757 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,757 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,757 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,758 WARN L313 ript$VariableManager]: TermVariabe |writerThread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,758 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,758 WARN L313 ript$VariableManager]: TermVariabe writerThread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,761 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,761 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,762 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,762 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,762 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,762 WARN L313 ript$VariableManager]: TermVariabe readerThread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,762 WARN L313 ript$VariableManager]: TermVariabe |readerThread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:31:00,799 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2020-10-16 12:31:00,814 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 12:31:00,835 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:31:00,836 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:31:00,836 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:31:00,836 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 12:31:00,836 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:31:00,836 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:31:00,837 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:31:00,837 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:31:00,858 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:31:00,859 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 102 transitions, 272 flow [2020-10-16 12:31:00,862 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 102 transitions, 272 flow [2020-10-16 12:31:00,864 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 101 places, 102 transitions, 272 flow [2020-10-16 12:31:00,943 INFO L129 PetriNetUnfolder]: 19/136 cut-off events. [2020-10-16 12:31:00,944 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 12:31:00,952 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 136 events. 19/136 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 12 conditions per place. [2020-10-16 12:31:00,958 INFO L117 LiptonReduction]: Number of co-enabled transitions 2626 [2020-10-16 12:31:02,233 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-10-16 12:31:02,383 INFO L132 LiptonReduction]: Checked pairs total: 15818 [2020-10-16 12:31:02,383 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 12:31:02,389 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 59 places, 59 transitions, 186 flow [2020-10-16 12:31:02,877 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5928 states. [2020-10-16 12:31:02,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states. [2020-10-16 12:31:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:31:02,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:02,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:02,889 INFO L429 AbstractCegarLoop]: === Iteration 1 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -315234292, now seen corresponding path program 1 times [2020-10-16 12:31:02,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:02,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754420818] [2020-10-16 12:31:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:03,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754420818] [2020-10-16 12:31:03,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:31:03,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:31:03,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1144662869] [2020-10-16 12:31:03,150 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:03,160 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:03,176 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 12:31:03,176 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:03,182 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:31:03,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:31:03,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:03,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:31:03,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:31:03,200 INFO L87 Difference]: Start difference. First operand 5928 states. Second operand 4 states. [2020-10-16 12:31:03,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:03,477 INFO L93 Difference]: Finished difference Result 12085 states and 40801 transitions. [2020-10-16 12:31:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:31:03,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-16 12:31:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:03,561 INFO L225 Difference]: With dead ends: 12085 [2020-10-16 12:31:03,561 INFO L226 Difference]: Without dead ends: 8300 [2020-10-16 12:31:03,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:31:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8300 states. [2020-10-16 12:31:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8300 to 5357. [2020-10-16 12:31:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5357 states. [2020-10-16 12:31:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 18240 transitions. [2020-10-16 12:31:03,975 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 18240 transitions. Word has length 8 [2020-10-16 12:31:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:03,975 INFO L481 AbstractCegarLoop]: Abstraction has 5357 states and 18240 transitions. [2020-10-16 12:31:03,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:31:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 18240 transitions. [2020-10-16 12:31:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:31:03,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:03,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:03,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:31:03,978 INFO L429 AbstractCegarLoop]: === Iteration 2 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:03,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1744343844, now seen corresponding path program 1 times [2020-10-16 12:31:03,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:03,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938939232] [2020-10-16 12:31:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938939232] [2020-10-16 12:31:04,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:31:04,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:31:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1878004132] [2020-10-16 12:31:04,033 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:04,034 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:04,036 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:31:04,037 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:04,057 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:31:04,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:31:04,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:04,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:31:04,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:31:04,060 INFO L87 Difference]: Start difference. First operand 5357 states and 18240 transitions. Second operand 3 states. [2020-10-16 12:31:04,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:04,132 INFO L93 Difference]: Finished difference Result 4578 states and 13797 transitions. [2020-10-16 12:31:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:31:04,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 12:31:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:04,165 INFO L225 Difference]: With dead ends: 4578 [2020-10-16 12:31:04,166 INFO L226 Difference]: Without dead ends: 4526 [2020-10-16 12:31:04,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:31:04,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2020-10-16 12:31:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 4526. [2020-10-16 12:31:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4526 states. [2020-10-16 12:31:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 13659 transitions. [2020-10-16 12:31:04,333 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 13659 transitions. Word has length 10 [2020-10-16 12:31:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:04,333 INFO L481 AbstractCegarLoop]: Abstraction has 4526 states and 13659 transitions. [2020-10-16 12:31:04,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:31:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 13659 transitions. [2020-10-16 12:31:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:31:04,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:04,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:04,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:31:04,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2002550628, now seen corresponding path program 2 times [2020-10-16 12:31:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:04,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023473314] [2020-10-16 12:31:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023473314] [2020-10-16 12:31:04,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:31:04,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:31:04,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1779127987] [2020-10-16 12:31:04,387 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:04,388 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:04,389 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-16 12:31:04,390 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:04,391 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:31:04,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:31:04,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:04,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:31:04,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:31:04,392 INFO L87 Difference]: Start difference. First operand 4526 states and 13659 transitions. Second operand 4 states. [2020-10-16 12:31:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:04,454 INFO L93 Difference]: Finished difference Result 3248 states and 8071 transitions. [2020-10-16 12:31:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:31:04,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:31:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:04,474 INFO L225 Difference]: With dead ends: 3248 [2020-10-16 12:31:04,474 INFO L226 Difference]: Without dead ends: 3092 [2020-10-16 12:31:04,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:31:04,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-10-16 12:31:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2633. [2020-10-16 12:31:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2633 states. [2020-10-16 12:31:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 6696 transitions. [2020-10-16 12:31:04,571 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 6696 transitions. Word has length 10 [2020-10-16 12:31:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:04,571 INFO L481 AbstractCegarLoop]: Abstraction has 2633 states and 6696 transitions. [2020-10-16 12:31:04,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:31:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 6696 transitions. [2020-10-16 12:31:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 12:31:04,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:04,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:04,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:31:04,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 947561452, now seen corresponding path program 1 times [2020-10-16 12:31:04,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:04,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715342699] [2020-10-16 12:31:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715342699] [2020-10-16 12:31:04,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:31:04,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:31:04,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2058072193] [2020-10-16 12:31:04,618 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:04,619 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:04,662 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2020-10-16 12:31:04,663 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:04,664 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 12:31:04,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:31:04,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:04,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:31:04,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:31:04,665 INFO L87 Difference]: Start difference. First operand 2633 states and 6696 transitions. Second operand 4 states. [2020-10-16 12:31:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:04,752 INFO L93 Difference]: Finished difference Result 2942 states and 7439 transitions. [2020-10-16 12:31:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:31:04,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 12:31:04,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:04,781 INFO L225 Difference]: With dead ends: 2942 [2020-10-16 12:31:04,781 INFO L226 Difference]: Without dead ends: 2203 [2020-10-16 12:31:04,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:31:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-10-16 12:31:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 1783. [2020-10-16 12:31:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-10-16 12:31:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 4594 transitions. [2020-10-16 12:31:04,835 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 4594 transitions. Word has length 12 [2020-10-16 12:31:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:04,838 INFO L481 AbstractCegarLoop]: Abstraction has 1783 states and 4594 transitions. [2020-10-16 12:31:04,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:31:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 4594 transitions. [2020-10-16 12:31:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:04,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:04,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:04,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:31:04,845 INFO L429 AbstractCegarLoop]: === Iteration 5 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:04,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:04,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1233084173, now seen corresponding path program 1 times [2020-10-16 12:31:04,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:04,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9986695] [2020-10-16 12:31:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:31:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:31:04,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9986695] [2020-10-16 12:31:04,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:31:04,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:31:04,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [716759017] [2020-10-16 12:31:04,920 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 12:31:04,922 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 12:31:04,929 INFO L258 McrAutomatonBuilder]: Finished intersection with 48 states and 74 transitions. [2020-10-16 12:31:04,930 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 12:31:05,005 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [63436#(not (= ~r~0 0))] [2020-10-16 12:31:05,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 12:31:05,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:31:05,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 12:31:05,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:31:05,006 INFO L87 Difference]: Start difference. First operand 1783 states and 4594 transitions. Second operand 7 states. [2020-10-16 12:31:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:31:05,102 INFO L93 Difference]: Finished difference Result 2026 states and 5182 transitions. [2020-10-16 12:31:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:31:05,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-16 12:31:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:31:05,108 INFO L225 Difference]: With dead ends: 2026 [2020-10-16 12:31:05,108 INFO L226 Difference]: Without dead ends: 1908 [2020-10-16 12:31:05,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:31:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-16 12:31:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1746. [2020-10-16 12:31:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1746 states. [2020-10-16 12:31:05,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4509 transitions. [2020-10-16 12:31:05,153 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4509 transitions. Word has length 20 [2020-10-16 12:31:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:31:05,153 INFO L481 AbstractCegarLoop]: Abstraction has 1746 states and 4509 transitions. [2020-10-16 12:31:05,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 12:31:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4509 transitions. [2020-10-16 12:31:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:31:05,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:31:05,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:31:05,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:31:05,156 INFO L429 AbstractCegarLoop]: === Iteration 6 === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 12:31:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:31:05,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1612003185, now seen corresponding path program 2 times [2020-10-16 12:31:05,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:31:05,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919929120] [2020-10-16 12:31:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:31:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:31:05,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:31:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 12:31:05,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 12:31:05,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 12:31:05,213 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 12:31:05,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:31:05,214 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 12:31:05,220 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [279] [279] L697-->L697-3: Formula: (= ~y~0_In1486329426 ~x~0_In1486329426) InVars {~y~0=~y~0_In1486329426, ~x~0=~x~0_In1486329426} OutVars{~y~0=~y~0_In1486329426, ~x~0=~x~0_In1486329426} AuxVars[] AssignedVars[] because there is no mapped edge [2020-10-16 12:31:05,228 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:31:05,228 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:31:05,229 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:31:05,230 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:31:05,230 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-10-16 12:31:05,230 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-10-16 12:31:05,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:31:05 BasicIcfg [2020-10-16 12:31:05,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:31:05,260 INFO L168 Benchmark]: Toolchain (without parser) took 5845.66 ms. Allocated memory was 140.0 MB in the beginning and 303.0 MB in the end (delta: 163.1 MB). Free memory was 102.1 MB in the beginning and 128.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 136.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,261 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.09 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 163.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 202.9 MB. Free memory was 163.4 MB in the beginning and 160.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,264 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,265 INFO L168 Benchmark]: RCFGBuilder took 528.56 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 129.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,265 INFO L168 Benchmark]: TraceAbstraction took 4601.80 ms. Allocated memory was 202.9 MB in the beginning and 303.0 MB in the end (delta: 100.1 MB). Free memory was 129.3 MB in the beginning and 128.4 MB in the end (delta: 951.9 kB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-10-16 12:31:05,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.09 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 163.4 MB in the end (delta: -61.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 202.9 MB. Free memory was 163.4 MB in the beginning and 160.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 202.9 MB. Free memory was 160.7 MB in the beginning and 159.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 528.56 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 129.3 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4601.80 ms. Allocated memory was 202.9 MB in the beginning and 303.0 MB in the end (delta: 100.1 MB). Free memory was 129.3 MB in the beginning and 128.4 MB in the end (delta: 951.9 kB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1326 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 441 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 101 PlacesBefore, 59 PlacesAfterwards, 102 TransitionsBefore, 59 TransitionsAfterwards, 2626 CoEnabledTransitionPairs, 5 FixpointIterations, 23 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 47 TotalNumberOfCompositions, 15818 MoverChecksTotal - CounterExampleResult [Line: 697]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L677] 0 int w=0, r=0, x, y; [L703] 0 pthread_t t1, t2, t3, t4; [L704] FCALL, FORK 0 pthread_create(&t1, 0, writer, 0) VAL [r=0, w=0, x=0, y=0] [L705] FCALL, FORK 0 pthread_create(&t2, 0, reader, 0) VAL [r=0, w=0, x=0, y=0] [L693] 2 int l; [L694] CALL 2 __VERIFIER_atomic_take_read_lock() [L683] CALL 2 assume_abort_if_not(w==0) [L3] COND TRUE 2 !cond [L683] RET 2 assume_abort_if_not(w==0) [L684] 2 r = r+1 [L694] RET 2 __VERIFIER_atomic_take_read_lock() [L695] 2 l = x VAL [r=1, w=0, x=0, y=0] [L696] 2 y = l VAL [r=1, w=0, x=0, y=0] [L698] 2 l = r-1 VAL [r=1, w=0, x=0, y=0] [L706] FCALL, FORK 0 pthread_create(&t3, 0, writer, 0) VAL [r=1, w=0, x=0, y=0] [L707] FCALL, FORK 0 pthread_create(&t4, 0, reader, 0) VAL [r=1, w=0, x=0, y=0] [L693] 4 int l; [L694] CALL 4 __VERIFIER_atomic_take_read_lock() [L683] CALL 4 assume_abort_if_not(w==0) [L3] COND TRUE 4 !cond [L683] RET 4 assume_abort_if_not(w==0) [L684] 4 r = r+1 [L694] RET 4 __VERIFIER_atomic_take_read_lock() [L699] 2 r = l [L700] 2 return 0; [L687] CALL 1 __VERIFIER_atomic_take_write_lock() [L679] CALL 1 assume_abort_if_not(w==0 && r==0) [L3] COND FALSE 1 !(!cond) [L679] RET 1 assume_abort_if_not(w==0 && r==0) [L680] 1 w = 1 [L687] RET 1 __VERIFIER_atomic_take_write_lock() [L695] 4 l = x VAL [r=0, w=1, x=0, y=0] [L696] 4 y = l VAL [r=0, w=1, x=0, y=0] [L688] 1 x = 3 VAL [r=0, w=1, x=3, y=0] [L697] COND TRUE 4 !(y == x) [L697] 4 __VERIFIER_error() VAL [r=0, w=1, x=3, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 439 SDtfs, 406 SDslu, 600 SDs, 0 SdLazy, 160 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5928occurred 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: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 3984 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...