/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:16:19,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:16:19,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:16:19,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:16:19,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:16:19,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:16:19,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:16:19,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:16:19,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:16:19,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:16:19,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:16:19,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:16:19,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:16:19,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:16:19,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:16:19,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:16:19,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:16:19,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:16:19,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:16:19,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:16:19,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:16:19,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:16:19,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:16:19,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:16:19,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:16:19,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:16:19,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:16:19,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:16:19,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:16:19,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:16:19,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:16:19,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:16:19,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:16:19,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:16:19,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:16:19,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:16:19,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:16:19,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:16:19,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:16:19,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:16:19,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:16:19,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:16:19,500 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:16:19,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:16:19,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:16:19,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:16:19,503 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:16:19,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:16:19,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:16:19,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:16:19,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:16:19,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:16:19,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:16:19,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:16:19,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:16:19,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:16:19,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:16:19,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:16:19,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:16:19,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:16:19,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:16:19,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:16:19,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:16:19,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:16:19,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:16:19,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:16:19,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:16:19,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:16:19,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:16:19,507 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:16:19,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:16:19,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:16:19,508 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:16:19,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:16:19,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:16:19,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:16:19,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:16:19,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:16:19,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-10-22 02:16:19,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee317bd8/9a58f7f446e441f1996e67a9ec4508d2/FLAG66fb17c0c [2020-10-22 02:16:20,530 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:16:20,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-10-22 02:16:20,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee317bd8/9a58f7f446e441f1996e67a9ec4508d2/FLAG66fb17c0c [2020-10-22 02:16:20,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ee317bd8/9a58f7f446e441f1996e67a9ec4508d2 [2020-10-22 02:16:20,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:16:20,810 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:16:20,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:16:20,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:16:20,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:16:20,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:16:20" (1/1) ... [2020-10-22 02:16:20,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403d3b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:20, skipping insertion in model container [2020-10-22 02:16:20,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:16:20" (1/1) ... [2020-10-22 02:16:20,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:16:20,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:16:21,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:16:21,391 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:16:21,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:16:21,524 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:16:21,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21 WrapperNode [2020-10-22 02:16:21,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:16:21,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:16:21,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:16:21,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:16:21,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:16:21,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:16:21,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:16:21,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:16:21,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... [2020-10-22 02:16:21,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:16:21,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:16:21,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:16:21,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:16:21,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:16:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:16:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:16:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:16:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:16:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:16:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:16:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:16:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:16:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:16:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:16:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:16:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:16:21,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:16:21,697 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:16:22,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:16:22,090 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:16:22,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:16:22 BoogieIcfgContainer [2020-10-22 02:16:22,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:16:22,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:16:22,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:16:22,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:16:22,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:16:20" (1/3) ... [2020-10-22 02:16:22,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6646d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:16:22, skipping insertion in model container [2020-10-22 02:16:22,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:16:21" (2/3) ... [2020-10-22 02:16:22,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6646d938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:16:22, skipping insertion in model container [2020-10-22 02:16:22,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:16:22" (3/3) ... [2020-10-22 02:16:22,102 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-10-22 02:16:22,115 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:16:22,115 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:16:22,123 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:16:22,124 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:16:22,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,155 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,156 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,157 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,157 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,158 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,158 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,158 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,159 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,159 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,160 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,160 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,160 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,161 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,165 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,172 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,172 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,173 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,173 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,177 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,177 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,178 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:16:22,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:16:22,193 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:16:22,212 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:16:22,213 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:16:22,213 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:16:22,213 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:16:22,213 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:16:22,213 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:16:22,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:16:22,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:16:22,228 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:16:22,228 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:22,230 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:22,232 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-10-22 02:16:22,284 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-10-22 02:16:22,285 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:16:22,290 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2020-10-22 02:16:22,293 INFO L116 LiptonReduction]: Number of co-enabled transitions 1348 [2020-10-22 02:16:23,649 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-22 02:16:23,919 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-22 02:16:24,206 INFO L131 LiptonReduction]: Checked pairs total: 2462 [2020-10-22 02:16:24,206 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-10-22 02:16:24,214 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 02:16:24,240 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 274 states. [2020-10-22 02:16:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2020-10-22 02:16:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:16:24,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:24,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:24,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash 911607414, now seen corresponding path program 1 times [2020-10-22 02:16:24,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:24,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446683932] [2020-10-22 02:16:24,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:24,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446683932] [2020-10-22 02:16:24,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:24,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:24,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2031470175] [2020-10-22 02:16:24,460 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:24,463 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:24,477 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:16:24,477 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:24,481 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:24,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 02:16:24,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 02:16:24,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:16:24,497 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 2 states. [2020-10-22 02:16:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:24,519 INFO L93 Difference]: Finished difference Result 274 states and 786 transitions. [2020-10-22 02:16:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 02:16:24,521 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-22 02:16:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:24,536 INFO L225 Difference]: With dead ends: 274 [2020-10-22 02:16:24,536 INFO L226 Difference]: Without dead ends: 226 [2020-10-22 02:16:24,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 02:16:24,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-22 02:16:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-22 02:16:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-22 02:16:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 634 transitions. [2020-10-22 02:16:24,610 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 634 transitions. Word has length 8 [2020-10-22 02:16:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:24,611 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 634 transitions. [2020-10-22 02:16:24,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 02:16:24,611 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 634 transitions. [2020-10-22 02:16:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:16:24,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:24,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:24,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:16:24,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1804948320, now seen corresponding path program 1 times [2020-10-22 02:16:24,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:24,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569509185] [2020-10-22 02:16:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:24,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569509185] [2020-10-22 02:16:24,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:24,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:16:24,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1821667874] [2020-10-22 02:16:24,767 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:24,768 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:24,770 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-22 02:16:24,770 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:24,770 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:24,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:24,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:24,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:24,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:24,773 INFO L87 Difference]: Start difference. First operand 226 states and 634 transitions. Second operand 4 states. [2020-10-22 02:16:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:24,808 INFO L93 Difference]: Finished difference Result 250 states and 668 transitions. [2020-10-22 02:16:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:24,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:16:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:24,812 INFO L225 Difference]: With dead ends: 250 [2020-10-22 02:16:24,812 INFO L226 Difference]: Without dead ends: 202 [2020-10-22 02:16:24,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-22 02:16:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-22 02:16:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-22 02:16:24,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 552 transitions. [2020-10-22 02:16:24,855 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 552 transitions. Word has length 9 [2020-10-22 02:16:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:24,855 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 552 transitions. [2020-10-22 02:16:24,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 552 transitions. [2020-10-22 02:16:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 02:16:24,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:24,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:24,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:16:24,858 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash 834020007, now seen corresponding path program 1 times [2020-10-22 02:16:24,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:24,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514635986] [2020-10-22 02:16:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:24,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514635986] [2020-10-22 02:16:24,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:24,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:24,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1917964951] [2020-10-22 02:16:24,969 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:24,970 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:24,974 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-22 02:16:24,975 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:25,094 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:25,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:25,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:25,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:25,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:25,095 INFO L87 Difference]: Start difference. First operand 202 states and 552 transitions. Second operand 5 states. [2020-10-22 02:16:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:25,179 INFO L93 Difference]: Finished difference Result 238 states and 627 transitions. [2020-10-22 02:16:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:25,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-22 02:16:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:25,183 INFO L225 Difference]: With dead ends: 238 [2020-10-22 02:16:25,183 INFO L226 Difference]: Without dead ends: 106 [2020-10-22 02:16:25,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-22 02:16:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-10-22 02:16:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-22 02:16:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 258 transitions. [2020-10-22 02:16:25,212 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 258 transitions. Word has length 10 [2020-10-22 02:16:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:25,212 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 258 transitions. [2020-10-22 02:16:25,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 258 transitions. [2020-10-22 02:16:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-22 02:16:25,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:25,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:25,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:16:25,216 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:25,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:25,217 INFO L82 PathProgramCache]: Analyzing trace with hash 739020719, now seen corresponding path program 1 times [2020-10-22 02:16:25,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:25,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388947756] [2020-10-22 02:16:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:25,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388947756] [2020-10-22 02:16:25,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:25,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:25,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1069690663] [2020-10-22 02:16:25,326 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:25,327 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:25,329 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 18 transitions. [2020-10-22 02:16:25,329 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:25,350 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:25,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:25,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:25,351 INFO L87 Difference]: Start difference. First operand 106 states and 258 transitions. Second operand 5 states. [2020-10-22 02:16:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:25,403 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-22 02:16:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:25,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-22 02:16:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:25,405 INFO L225 Difference]: With dead ends: 148 [2020-10-22 02:16:25,405 INFO L226 Difference]: Without dead ends: 76 [2020-10-22 02:16:25,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-22 02:16:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-22 02:16:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-22 02:16:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 169 transitions. [2020-10-22 02:16:25,412 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 169 transitions. Word has length 12 [2020-10-22 02:16:25,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:25,412 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 169 transitions. [2020-10-22 02:16:25,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 169 transitions. [2020-10-22 02:16:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:16:25,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:25,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:25,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:16:25,414 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash -254241509, now seen corresponding path program 1 times [2020-10-22 02:16:25,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:25,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139867994] [2020-10-22 02:16:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:25,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139867994] [2020-10-22 02:16:25,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:25,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:16:25,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1927943762] [2020-10-22 02:16:25,485 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:25,486 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:25,489 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-22 02:16:25,489 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:25,584 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:25,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:16:25,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:25,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:16:25,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:16:25,585 INFO L87 Difference]: Start difference. First operand 76 states and 169 transitions. Second operand 4 states. [2020-10-22 02:16:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:25,618 INFO L93 Difference]: Finished difference Result 87 states and 174 transitions. [2020-10-22 02:16:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:25,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 02:16:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:25,619 INFO L225 Difference]: With dead ends: 87 [2020-10-22 02:16:25,619 INFO L226 Difference]: Without dead ends: 66 [2020-10-22 02:16:25,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-22 02:16:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-22 02:16:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-22 02:16:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 133 transitions. [2020-10-22 02:16:25,625 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 133 transitions. Word has length 13 [2020-10-22 02:16:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:25,626 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 133 transitions. [2020-10-22 02:16:25,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:16:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 133 transitions. [2020-10-22 02:16:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:16:25,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:25,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:25,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:16:25,627 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash 734665460, now seen corresponding path program 1 times [2020-10-22 02:16:25,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:25,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039260354] [2020-10-22 02:16:25,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:25,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039260354] [2020-10-22 02:16:25,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:25,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:16:25,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [870860839] [2020-10-22 02:16:25,719 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:25,721 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:25,723 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-10-22 02:16:25,724 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:25,769 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3026#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:25,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:16:25,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:16:25,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:16:25,770 INFO L87 Difference]: Start difference. First operand 66 states and 133 transitions. Second operand 6 states. [2020-10-22 02:16:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:25,816 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-22 02:16:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:16:25,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-22 02:16:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:25,817 INFO L225 Difference]: With dead ends: 62 [2020-10-22 02:16:25,817 INFO L226 Difference]: Without dead ends: 47 [2020-10-22 02:16:25,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:25,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-22 02:16:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-22 02:16:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-22 02:16:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-22 02:16:25,821 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-10-22 02:16:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:25,821 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-22 02:16:25,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:16:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-22 02:16:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:16:25,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:25,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:25,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:16:25,823 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1299079363, now seen corresponding path program 1 times [2020-10-22 02:16:25,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:25,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172415379] [2020-10-22 02:16:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:25,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172415379] [2020-10-22 02:16:25,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:25,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 02:16:25,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1928213670] [2020-10-22 02:16:25,894 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:25,896 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:25,899 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-10-22 02:16:25,899 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:25,962 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3191#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:16:25,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 02:16:25,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:25,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 02:16:25,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:25,963 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-10-22 02:16:26,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:26,033 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2020-10-22 02:16:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:16:26,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-22 02:16:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:26,034 INFO L225 Difference]: With dead ends: 40 [2020-10-22 02:16:26,034 INFO L226 Difference]: Without dead ends: 34 [2020-10-22 02:16:26,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:16:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-22 02:16:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-22 02:16:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-22 02:16:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2020-10-22 02:16:26,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 15 [2020-10-22 02:16:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2020-10-22 02:16:26,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 02:16:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2020-10-22 02:16:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:16:26,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:16:26,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:16:26,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:16:26,038 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:16:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:16:26,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1284707522, now seen corresponding path program 1 times [2020-10-22 02:16:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:16:26,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975382840] [2020-10-22 02:16:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:16:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:16:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:16:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975382840] [2020-10-22 02:16:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:16:26,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:16:26,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1046448633] [2020-10-22 02:16:26,102 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:16:26,104 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:16:26,108 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 25 transitions. [2020-10-22 02:16:26,108 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:16:26,141 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:16:26,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 02:16:26,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:16:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 02:16:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:16:26,143 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2020-10-22 02:16:26,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:16:26,165 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2020-10-22 02:16:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:16:26,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-22 02:16:26,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:16:26,166 INFO L225 Difference]: With dead ends: 33 [2020-10-22 02:16:26,166 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:16:26,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:16:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:16:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:16:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:16:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:16:26,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:16:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:16:26,168 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:16:26,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 02:16:26,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:16:26,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:16:26,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:16:26,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:16:26 BasicIcfg [2020-10-22 02:16:26,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:16:26,174 INFO L168 Benchmark]: Toolchain (without parser) took 5369.14 ms. Allocated memory was 140.0 MB in the beginning and 281.0 MB in the end (delta: 141.0 MB). Free memory was 101.8 MB in the beginning and 226.3 MB in the end (delta: -124.5 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,175 INFO L168 Benchmark]: CDTParser took 2.97 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 713.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 158.6 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.56 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,177 INFO L168 Benchmark]: Boogie Preprocessor took 28.76 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,178 INFO L168 Benchmark]: RCFGBuilder took 486.89 ms. Allocated memory is still 202.9 MB. Free memory was 154.6 MB in the beginning and 131.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-10-22 02:16:26,179 INFO L168 Benchmark]: TraceAbstraction took 4077.81 ms. Allocated memory was 202.9 MB in the beginning and 281.0 MB in the end (delta: 78.1 MB). Free memory was 130.5 MB in the beginning and 226.3 MB in the end (delta: -95.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-22 02:16:26,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.97 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 713.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 158.6 MB in the end (delta: -57.6 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.56 ms. Allocated memory is still 202.9 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.76 ms. Allocated memory is still 202.9 MB. Free memory was 156.6 MB in the beginning and 154.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.89 ms. Allocated memory is still 202.9 MB. Free memory was 154.6 MB in the beginning and 131.1 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4077.81 ms. Allocated memory was 202.9 MB in the beginning and 281.0 MB in the end (delta: 78.1 MB). Free memory was 130.5 MB in the beginning and 226.3 MB in the end (delta: -95.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 737 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 46 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1348 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2462 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 149 SDtfs, 153 SDslu, 228 SDs, 0 SdLazy, 120 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 correct! Received shutdown request...