/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:10:51,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:10:51,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:10:51,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:10:51,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:10:51,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:10:51,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:10:51,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:10:51,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:10:51,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:10:51,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:10:51,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:10:51,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:10:51,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:10:51,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:10:51,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:10:51,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:10:51,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:10:51,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:10:51,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:10:51,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:10:51,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:10:51,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:10:51,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:10:51,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 12:10:51,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 12:10:51,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 12:10:51,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 12:10:51,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 12:10:51,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 12:10:51,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:10:51,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:10:51,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:10:51,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:10:51,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:10:51,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:10:51,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:10:51,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:10:51,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:10:51,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:10:51,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:10:51,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:10:51,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:10:51,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:10:51,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:10:51,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:10:51,825 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:10:51,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:10:51,825 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:10:51,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:10:51,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:10:51,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:10:51,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:10:51,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:10:51,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:10:51,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:10:51,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:10:51,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:10:51,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:10:51,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:10:51,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:10:51,830 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:10:51,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:10:51,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:10:51,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:10:51,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:10:51,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:10:51,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:10:51,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:10:51,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:10:51,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:10:52,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:10:52,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:10:52,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:10:52,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:10:52,187 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:10:52,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-10-16 12:10:52,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac2bf6db/713d758eadee402e8e05c1d513e05208/FLAGaad0bb1df [2020-10-16 12:10:52,785 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:10:52,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2020-10-16 12:10:52,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac2bf6db/713d758eadee402e8e05c1d513e05208/FLAGaad0bb1df [2020-10-16 12:10:53,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ac2bf6db/713d758eadee402e8e05c1d513e05208 [2020-10-16 12:10:53,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:10:53,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:10:53,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:10:53,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:10:53,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:10:53,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f59fd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53, skipping insertion in model container [2020-10-16 12:10:53,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:10:53,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:10:53,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:10:53,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:10:53,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:10:53,790 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:10:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53 WrapperNode [2020-10-16 12:10:53,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:10:53,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:10:53,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:10:53,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:10:53,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:10:53,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:10:53,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:10:53,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:10:53,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... [2020-10-16 12:10:53,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:10:53,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:10:53,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:10:53,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:10:53,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:10:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:10:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 12:10:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:10:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:10:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 12:10:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 12:10:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 12:10:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 12:10:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 12:10:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 12:10:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 12:10:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:10:53,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:10:53,956 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:10:54,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:10:54,332 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 12:10:54,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:10:54 BoogieIcfgContainer [2020-10-16 12:10:54,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:10:54,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:10:54,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:10:54,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:10:54,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:10:53" (1/3) ... [2020-10-16 12:10:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbd7a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:10:54, skipping insertion in model container [2020-10-16 12:10:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:10:53" (2/3) ... [2020-10-16 12:10:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cbd7a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:10:54, skipping insertion in model container [2020-10-16 12:10:54,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:10:54" (3/3) ... [2020-10-16 12:10:54,345 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2020-10-16 12:10:54,358 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:10:54,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:10:54,367 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:10:54,368 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:10:54,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,400 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,400 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,400 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,402 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,411 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,417 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:10:54,431 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 12:10:54,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 12:10:54,468 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:10:54,469 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:10:54,469 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:10:54,469 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:10:54,469 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:10:54,469 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:10:54,470 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:10:54,470 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:10:54,484 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:10:54,485 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 12:10:54,488 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 68 transitions, 151 flow [2020-10-16 12:10:54,490 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 12:10:54,533 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 12:10:54,534 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 12:10:54,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 12:10:54,542 INFO L117 LiptonReduction]: Number of co-enabled transitions 1178 [2020-10-16 12:10:55,830 INFO L132 LiptonReduction]: Checked pairs total: 2269 [2020-10-16 12:10:55,830 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 12:10:55,837 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-10-16 12:10:55,859 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-10-16 12:10:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-10-16 12:10:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 12:10:55,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:55,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:55,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:55,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:55,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1225676630, now seen corresponding path program 1 times [2020-10-16 12:10:55,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:55,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137156945] [2020-10-16 12:10:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137156945] [2020-10-16 12:10:56,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:10:56,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510725400] [2020-10-16 12:10:56,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:10:56,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:10:56,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:10:56,138 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-10-16 12:10:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,191 INFO L93 Difference]: Finished difference Result 218 states and 604 transitions. [2020-10-16 12:10:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:10:56,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 12:10:56,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,209 INFO L225 Difference]: With dead ends: 218 [2020-10-16 12:10:56,209 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 12:10:56,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:10:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 12:10:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-16 12:10:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-16 12:10:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 452 transitions. [2020-10-16 12:10:56,274 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 452 transitions. Word has length 8 [2020-10-16 12:10:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,275 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 452 transitions. [2020-10-16 12:10:56,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:10:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 452 transitions. [2020-10-16 12:10:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 12:10:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:10:56,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,278 INFO L82 PathProgramCache]: Analyzing trace with hash 658729482, now seen corresponding path program 1 times [2020-10-16 12:10:56,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672943039] [2020-10-16 12:10:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672943039] [2020-10-16 12:10:56,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:10:56,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861348844] [2020-10-16 12:10:56,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:10:56,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:10:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:10:56,354 INFO L87 Difference]: Start difference. First operand 170 states and 452 transitions. Second operand 3 states. [2020-10-16 12:10:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,366 INFO L93 Difference]: Finished difference Result 160 states and 419 transitions. [2020-10-16 12:10:56,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:10:56,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 12:10:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,370 INFO L225 Difference]: With dead ends: 160 [2020-10-16 12:10:56,370 INFO L226 Difference]: Without dead ends: 160 [2020-10-16 12:10:56,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:10:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-16 12:10:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-16 12:10:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 12:10:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 419 transitions. [2020-10-16 12:10:56,390 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 419 transitions. Word has length 9 [2020-10-16 12:10:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,390 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 419 transitions. [2020-10-16 12:10:56,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:10:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 419 transitions. [2020-10-16 12:10:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:10:56,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:10:56,393 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1054810361, now seen corresponding path program 1 times [2020-10-16 12:10:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150750167] [2020-10-16 12:10:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150750167] [2020-10-16 12:10:56,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:10:56,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902217143] [2020-10-16 12:10:56,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:56,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:56,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:56,470 INFO L87 Difference]: Start difference. First operand 160 states and 419 transitions. Second operand 4 states. [2020-10-16 12:10:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,495 INFO L93 Difference]: Finished difference Result 220 states and 567 transitions. [2020-10-16 12:10:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:10:56,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:10:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,498 INFO L225 Difference]: With dead ends: 220 [2020-10-16 12:10:56,498 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 12:10:56,499 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 [2020-10-16 12:10:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 12:10:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-16 12:10:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 12:10:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 377 transitions. [2020-10-16 12:10:56,511 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 377 transitions. Word has length 10 [2020-10-16 12:10:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,511 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 377 transitions. [2020-10-16 12:10:56,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 377 transitions. [2020-10-16 12:10:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 12:10:56,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 12:10:56,513 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1054223531, now seen corresponding path program 2 times [2020-10-16 12:10:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540803688] [2020-10-16 12:10:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540803688] [2020-10-16 12:10:56,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 12:10:56,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663372075] [2020-10-16 12:10:56,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:56,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:56,637 INFO L87 Difference]: Start difference. First operand 148 states and 377 transitions. Second operand 4 states. [2020-10-16 12:10:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,672 INFO L93 Difference]: Finished difference Result 168 states and 391 transitions. [2020-10-16 12:10:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:56,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 12:10:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,674 INFO L225 Difference]: With dead ends: 168 [2020-10-16 12:10:56,674 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 12:10:56,675 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 [2020-10-16 12:10:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 12:10:56,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-16 12:10:56,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-16 12:10:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 291 transitions. [2020-10-16 12:10:56,684 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 291 transitions. Word has length 10 [2020-10-16 12:10:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,685 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 291 transitions. [2020-10-16 12:10:56,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 291 transitions. [2020-10-16 12:10:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 12:10:56,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:10:56,687 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1670186442, now seen corresponding path program 1 times [2020-10-16 12:10:56,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572118603] [2020-10-16 12:10:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572118603] [2020-10-16 12:10:56,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:56,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555818861] [2020-10-16 12:10:56,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:10:56,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:10:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:56,760 INFO L87 Difference]: Start difference. First operand 126 states and 291 transitions. Second operand 5 states. [2020-10-16 12:10:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,804 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-10-16 12:10:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:10:56,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 12:10:56,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,805 INFO L225 Difference]: With dead ends: 121 [2020-10-16 12:10:56,806 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 12:10:56,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:10:56,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 12:10:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-16 12:10:56,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-16 12:10:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-10-16 12:10:56,812 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-10-16 12:10:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,812 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-10-16 12:10:56,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:10:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-10-16 12:10:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 12:10:56,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:10:56,814 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1269858217, now seen corresponding path program 1 times [2020-10-16 12:10:56,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749678259] [2020-10-16 12:10:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:56,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749678259] [2020-10-16 12:10:56,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:56,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 12:10:56,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003129528] [2020-10-16 12:10:56,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 12:10:56,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:56,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 12:10:56,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 12:10:56,903 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 6 states. [2020-10-16 12:10:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:56,972 INFO L93 Difference]: Finished difference Result 87 states and 178 transitions. [2020-10-16 12:10:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 12:10:56,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-16 12:10:56,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:56,973 INFO L225 Difference]: With dead ends: 87 [2020-10-16 12:10:56,973 INFO L226 Difference]: Without dead ends: 78 [2020-10-16 12:10:56,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:10:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-16 12:10:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-16 12:10:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-16 12:10:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 162 transitions. [2020-10-16 12:10:56,978 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 162 transitions. Word has length 13 [2020-10-16 12:10:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:56,983 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 162 transitions. [2020-10-16 12:10:56,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 12:10:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 162 transitions. [2020-10-16 12:10:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:10:56,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:56,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:56,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:10:56,985 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1906464189, now seen corresponding path program 1 times [2020-10-16 12:10:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:56,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017857214] [2020-10-16 12:10:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:57,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017857214] [2020-10-16 12:10:57,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:57,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:57,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481437454] [2020-10-16 12:10:57,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:57,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:57,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:57,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:57,022 INFO L87 Difference]: Start difference. First operand 78 states and 162 transitions. Second operand 4 states. [2020-10-16 12:10:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:57,040 INFO L93 Difference]: Finished difference Result 129 states and 249 transitions. [2020-10-16 12:10:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:10:57,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-16 12:10:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:57,041 INFO L225 Difference]: With dead ends: 129 [2020-10-16 12:10:57,041 INFO L226 Difference]: Without dead ends: 48 [2020-10-16 12:10:57,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-16 12:10:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-16 12:10:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 12:10:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 85 transitions. [2020-10-16 12:10:57,044 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 85 transitions. Word has length 16 [2020-10-16 12:10:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:57,045 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 85 transitions. [2020-10-16 12:10:57,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 85 transitions. [2020-10-16 12:10:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:10:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:10:57,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:10:57,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:10:57,046 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 12:10:57,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:10:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -109612871, now seen corresponding path program 2 times [2020-10-16 12:10:57,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:10:57,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390426252] [2020-10-16 12:10:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:10:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:10:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:10:57,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390426252] [2020-10-16 12:10:57,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:10:57,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 12:10:57,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053262887] [2020-10-16 12:10:57,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 12:10:57,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:10:57,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 12:10:57,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 12:10:57,096 INFO L87 Difference]: Start difference. First operand 48 states and 85 transitions. Second operand 4 states. [2020-10-16 12:10:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:10:57,106 INFO L93 Difference]: Finished difference Result 47 states and 84 transitions. [2020-10-16 12:10:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 12:10:57,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-16 12:10:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:10:57,107 INFO L225 Difference]: With dead ends: 47 [2020-10-16 12:10:57,107 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:10:57,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:10:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:10:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:10:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:10:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:10:57,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-16 12:10:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:10:57,109 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:10:57,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 12:10:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:10:57,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:10:57,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 12:10:57,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:10:57 BasicIcfg [2020-10-16 12:10:57,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:10:57,117 INFO L168 Benchmark]: Toolchain (without parser) took 4011.44 ms. Allocated memory was 139.5 MB in the beginning and 247.5 MB in the end (delta: 108.0 MB). Free memory was 101.4 MB in the beginning and 95.6 MB in the end (delta: 5.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,118 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:10:57,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.82 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 158.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,120 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.62 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,120 INFO L168 Benchmark]: Boogie Preprocessor took 31.84 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,121 INFO L168 Benchmark]: RCFGBuilder took 449.84 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 132.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,122 INFO L168 Benchmark]: TraceAbstraction took 2777.61 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 132.2 MB in the beginning and 95.6 MB in the end (delta: 36.6 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:10:57,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 684.82 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 101.2 MB in the beginning and 158.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.62 ms. Allocated memory is still 201.3 MB. Free memory was 157.9 MB in the beginning and 155.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.84 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 154.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.84 ms. Allocated memory is still 201.3 MB. Free memory was 154.6 MB in the beginning and 132.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2777.61 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 132.2 MB in the beginning and 95.6 MB in the end (delta: 36.6 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 592 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 26 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 76 PlacesBefore, 30 PlacesAfterwards, 68 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 59 TotalNumberOfCompositions, 2269 MoverChecksTotal - PositiveResult [Line: 7]: 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 146 SDtfs, 127 SDslu, 198 SDs, 0 SdLazy, 107 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2953 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...