/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-MCR.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 23:13:13,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 23:13:13,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 23:13:13,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 23:13:13,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 23:13:13,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 23:13:13,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 23:13:13,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 23:13:13,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 23:13:13,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 23:13:13,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 23:13:13,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 23:13:13,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 23:13:13,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 23:13:13,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 23:13:13,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 23:13:13,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 23:13:13,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 23:13:13,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 23:13:13,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 23:13:13,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 23:13:13,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 23:13:13,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 23:13:13,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 23:13:13,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 23:13:13,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 23:13:13,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 23:13:13,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 23:13:13,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 23:13:13,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 23:13:13,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 23:13:13,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 23:13:13,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 23:13:13,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 23:13:13,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 23:13:13,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 23:13:13,208 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-MCR.epf [2019-12-27 23:13:13,223 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 23:13:13,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 23:13:13,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 23:13:13,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 23:13:13,225 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 23:13:13,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 23:13:13,225 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 23:13:13,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 23:13:13,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 23:13:13,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 23:13:13,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 23:13:13,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 23:13:13,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 23:13:13,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 23:13:13,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 23:13:13,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 23:13:13,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 23:13:13,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 23:13:13,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 23:13:13,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 23:13:13,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 23:13:13,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 23:13:13,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 23:13:13,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 23:13:13,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 23:13:13,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 23:13:13,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 23:13:13,229 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 23:13:13,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 23:13:13,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 23:13:13,230 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 23:13:13,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 23:13:13,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 23:13:13,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 23:13:13,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 23:13:13,533 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 23:13:13,534 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 23:13:13,534 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2019-12-27 23:13:13,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2a22752/47e180ea7130486e9d9e189eba8d278c/FLAGa4329c6ff [2019-12-27 23:13:14,176 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 23:13:14,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2019-12-27 23:13:14,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2a22752/47e180ea7130486e9d9e189eba8d278c/FLAGa4329c6ff [2019-12-27 23:13:14,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2a22752/47e180ea7130486e9d9e189eba8d278c [2019-12-27 23:13:14,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 23:13:14,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 23:13:14,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 23:13:14,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 23:13:14,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 23:13:14,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:13:14" (1/1) ... [2019-12-27 23:13:14,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d2b54a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:14, skipping insertion in model container [2019-12-27 23:13:14,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:13:14" (1/1) ... [2019-12-27 23:13:14,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 23:13:14,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 23:13:14,700 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-12-27 23:13:15,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 23:13:15,020 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 23:13:15,034 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2019-12-27 23:13:15,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 23:13:15,166 INFO L208 MainTranslator]: Completed translation [2019-12-27 23:13:15,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15 WrapperNode [2019-12-27 23:13:15,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 23:13:15,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 23:13:15,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 23:13:15,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 23:13:15,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 23:13:15,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 23:13:15,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 23:13:15,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 23:13:15,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (1/1) ... [2019-12-27 23:13:15,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 23:13:15,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 23:13:15,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 23:13:15,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 23:13:15,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (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 [2019-12-27 23:13:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 23:13:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 23:13:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-27 23:13:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 23:13:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 23:13:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-27 23:13:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2019-12-27 23:13:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2019-12-27 23:13:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 23:13:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 23:13:15,344 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 23:13:15,728 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 23:13:15,728 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 23:13:15,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:13:15 BoogieIcfgContainer [2019-12-27 23:13:15,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 23:13:15,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 23:13:15,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 23:13:15,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 23:13:15,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:13:14" (1/3) ... [2019-12-27 23:13:15,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac17007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:13:15, skipping insertion in model container [2019-12-27 23:13:15,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:13:15" (2/3) ... [2019-12-27 23:13:15,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac17007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:13:15, skipping insertion in model container [2019-12-27 23:13:15,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:13:15" (3/3) ... [2019-12-27 23:13:15,739 INFO L109 eAbstractionObserver]: Analyzing ICFG condvar.i [2019-12-27 23:13:15,750 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 23:13:15,751 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 23:13:15,759 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 23:13:15,760 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 23:13:15,786 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,787 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,787 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,788 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,788 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,788 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,789 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,790 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,790 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,790 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,794 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,795 WARN L315 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,795 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,795 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,796 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,796 WARN L315 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 23:13:15,816 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-27 23:13:15,834 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 23:13:15,834 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 23:13:15,834 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 23:13:15,835 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 23:13:15,835 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 23:13:15,835 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 23:13:15,835 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 23:13:15,836 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 23:13:15,849 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 59 transitions [2019-12-27 23:13:15,850 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions [2019-12-27 23:13:15,893 INFO L132 PetriNetUnfolder]: 5/58 cut-off events. [2019-12-27 23:13:15,893 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 23:13:15,902 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2019-12-27 23:13:15,905 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions [2019-12-27 23:13:15,926 INFO L132 PetriNetUnfolder]: 5/58 cut-off events. [2019-12-27 23:13:15,926 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 23:13:15,928 INFO L76 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs. 0/52 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2019-12-27 23:13:15,929 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 352 [2019-12-27 23:13:15,931 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 23:13:17,102 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2019-12-27 23:13:17,622 WARN L192 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2019-12-27 23:13:17,755 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-12-27 23:13:17,758 INFO L206 etLargeBlockEncoding]: Checked pairs total: 354 [2019-12-27 23:13:17,759 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-27 23:13:17,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-27 23:13:17,772 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2019-12-27 23:13:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-12-27 23:13:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 23:13:17,781 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:13:17,782 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 23:13:17,782 INFO L410 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:13:17,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:13:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash 225592945, now seen corresponding path program 1 times [2019-12-27 23:13:17,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:13:17,804 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125540635] [2019-12-27 23:13:17,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:13:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:13:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:13:18,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125540635] [2019-12-27 23:13:18,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:13:18,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 23:13:18,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1866460056] [2019-12-27 23:13:18,028 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:13:18,034 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:13:18,046 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 6 states and 5 transitions. [2019-12-27 23:13:18,047 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:13:18,053 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 23:13:18,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 23:13:18,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:13:18,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 23:13:18,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 23:13:18,070 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-12-27 23:13:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:13:18,083 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2019-12-27 23:13:18,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 23:13:18,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-27 23:13:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:13:18,095 INFO L225 Difference]: With dead ends: 13 [2019-12-27 23:13:18,095 INFO L226 Difference]: Without dead ends: 10 [2019-12-27 23:13:18,097 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 23:13:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-27 23:13:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-27 23:13:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-27 23:13:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2019-12-27 23:13:18,131 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 5 [2019-12-27 23:13:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:13:18,131 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 16 transitions. [2019-12-27 23:13:18,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 23:13:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 16 transitions. [2019-12-27 23:13:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-27 23:13:18,132 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:13:18,133 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:13:18,133 INFO L410 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:13:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:13:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2032051994, now seen corresponding path program 1 times [2019-12-27 23:13:18,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:13:18,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449660937] [2019-12-27 23:13:18,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:13:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:13:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:13:18,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449660937] [2019-12-27 23:13:18,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:13:18,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 23:13:18,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [61369566] [2019-12-27 23:13:18,197 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:13:18,198 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:13:18,203 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 11 transitions. [2019-12-27 23:13:18,204 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:13:18,214 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 23:13:18,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 23:13:18,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:13:18,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 23:13:18,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 23:13:18,217 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 4 states. [2019-12-27 23:13:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:13:18,258 INFO L93 Difference]: Finished difference Result 12 states and 20 transitions. [2019-12-27 23:13:18,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 23:13:18,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-27 23:13:18,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:13:18,261 INFO L225 Difference]: With dead ends: 12 [2019-12-27 23:13:18,261 INFO L226 Difference]: Without dead ends: 12 [2019-12-27 23:13:18,262 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-27 23:13:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-27 23:13:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-27 23:13:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-27 23:13:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 20 transitions. [2019-12-27 23:13:18,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 20 transitions. Word has length 7 [2019-12-27 23:13:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:13:18,266 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 20 transitions. [2019-12-27 23:13:18,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 23:13:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 20 transitions. [2019-12-27 23:13:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 23:13:18,267 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:13:18,267 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:13:18,267 INFO L410 AbstractCegarLoop]: === Iteration 3 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:13:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:13:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1430445622, now seen corresponding path program 1 times [2019-12-27 23:13:18,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:13:18,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392170940] [2019-12-27 23:13:18,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:13:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:13:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:13:18,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392170940] [2019-12-27 23:13:18,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81645350] [2019-12-27 23:13:18,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 23:13:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:13:18,404 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 23:13:18,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 23:13:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 23:13:18,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 23:13:18,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-27 23:13:18,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [539387818] [2019-12-27 23:13:18,433 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:13:18,435 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:13:18,444 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 12 states and 14 transitions. [2019-12-27 23:13:18,445 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:13:18,465 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 23:13:18,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 23:13:18,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:13:18,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 23:13:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 23:13:18,467 INFO L87 Difference]: Start difference. First operand 12 states and 20 transitions. Second operand 6 states. [2019-12-27 23:13:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:13:18,520 INFO L93 Difference]: Finished difference Result 14 states and 24 transitions. [2019-12-27 23:13:18,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-27 23:13:18,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-12-27 23:13:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:13:18,521 INFO L225 Difference]: With dead ends: 14 [2019-12-27 23:13:18,521 INFO L226 Difference]: Without dead ends: 14 [2019-12-27 23:13:18,522 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2019-12-27 23:13:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-27 23:13:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-27 23:13:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-27 23:13:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 24 transitions. [2019-12-27 23:13:18,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 24 transitions. Word has length 8 [2019-12-27 23:13:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:13:18,526 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 24 transitions. [2019-12-27 23:13:18,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 23:13:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 24 transitions. [2019-12-27 23:13:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 23:13:18,527 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 23:13:18,527 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 23:13:18,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 23:13:18,735 INFO L410 AbstractCegarLoop]: === Iteration 4 === [threadErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 23:13:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 23:13:18,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1393689318, now seen corresponding path program 2 times [2019-12-27 23:13:18,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 23:13:18,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610818731] [2019-12-27 23:13:18,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 23:13:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 23:13:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 23:13:18,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610818731] [2019-12-27 23:13:18,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 23:13:18,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 23:13:18,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1576945063] [2019-12-27 23:13:18,829 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 23:13:18,830 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 23:13:18,831 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 17 transitions. [2019-12-27 23:13:18,831 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 23:13:18,862 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 2 times. [2019-12-27 23:13:18,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 23:13:18,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 23:13:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 23:13:18,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-27 23:13:18,863 INFO L87 Difference]: Start difference. First operand 14 states and 24 transitions. Second operand 6 states. [2019-12-27 23:13:18,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 23:13:18,954 INFO L93 Difference]: Finished difference Result 15 states and 28 transitions. [2019-12-27 23:13:18,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 23:13:18,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-12-27 23:13:18,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 23:13:18,955 INFO L225 Difference]: With dead ends: 15 [2019-12-27 23:13:18,955 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 23:13:18,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-12-27 23:13:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 23:13:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 23:13:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 23:13:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 23:13:18,956 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-12-27 23:13:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 23:13:18,956 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 23:13:18,956 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 23:13:18,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 23:13:18,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 23:13:18,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:13:18 BasicIcfg [2019-12-27 23:13:18,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 23:13:18,962 INFO L168 Benchmark]: Toolchain (without parser) took 4493.22 ms. Allocated memory was 135.3 MB in the beginning and 254.3 MB in the end (delta: 119.0 MB). Free memory was 98.9 MB in the beginning and 107.3 MB in the end (delta: -8.5 MB). Peak memory consumption was 110.5 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,963 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.96 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 158.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.92 ms. Allocated memory is still 200.3 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,966 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 200.3 MB. Free memory was 156.7 MB in the beginning and 155.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,967 INFO L168 Benchmark]: RCFGBuilder took 468.67 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 133.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,968 INFO L168 Benchmark]: TraceAbstraction took 3228.43 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 133.9 MB in the beginning and 107.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2019-12-27 23:13:18,972 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 696.96 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 98.4 MB in the beginning and 158.9 MB in the end (delta: -60.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.92 ms. Allocated memory is still 200.3 MB. Free memory was 158.9 MB in the beginning and 156.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.81 ms. Allocated memory is still 200.3 MB. Free memory was 156.7 MB in the beginning and 155.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.67 ms. Allocated memory is still 200.3 MB. Free memory was 155.2 MB in the beginning and 133.9 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3228.43 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 133.9 MB in the beginning and 107.3 MB in the end (delta: 26.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 58 ProgramPointsBefore, 14 ProgramPointsAfterwards, 59 TransitionsBefore, 13 TransitionsAfterwards, 352 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 192 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 354 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 695]: 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 2 procedures, 55 locations, 1 error locations. Result: SAFE, OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 23 SDslu, 28 SDs, 0 SdLazy, 58 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 538 SizeOfPredicates, 1 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...