/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:36:36,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:36:36,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:36:36,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:36:36,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:36:36,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:36:36,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:36:36,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:36:36,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:36:36,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:36:36,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:36:36,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:36:36,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:36:36,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:36:36,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:36:36,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:36:36,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:36:36,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:36:36,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:36:36,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:36:36,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:36:36,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:36:36,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:36:36,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:36:36,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:36:36,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:36:36,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:36:36,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:36:36,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:36:36,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:36:36,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:36:36,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:36:36,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:36:36,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:36:36,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:36:36,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:36:36,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:36:36,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:36:36,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:36:36,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:36:36,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:36:36,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:36:36,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:36:36,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:36:36,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:36:36,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:36:36,808 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:36:36,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:36:36,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:36:36,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:36:36,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:36:36,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:36:36,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:36:36,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:36:36,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:36:36,811 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:36:36,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:36:36,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:36:36,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:36:36,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:36:36,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:36:36,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:36:36,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:36:36,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:36:36,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:36:36,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:36:36,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:36:36,815 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:36:37,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:36:37,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:36:37,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:36:37,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:36:37,154 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:36:37,155 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-10-16 13:36:37,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c99d2eb1/2387fe89d07c43edaeb2457c3827566e/FLAG27baa0792 [2020-10-16 13:36:37,757 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:36:37,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-10-16 13:36:37,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c99d2eb1/2387fe89d07c43edaeb2457c3827566e/FLAG27baa0792 [2020-10-16 13:36:38,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c99d2eb1/2387fe89d07c43edaeb2457c3827566e [2020-10-16 13:36:38,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:36:38,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:36:38,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:36:38,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:36:38,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:36:38,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:38,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2280fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38, skipping insertion in model container [2020-10-16 13:36:38,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:38,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:36:38,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:36:38,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:36:38,773 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:36:38,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:36:38,932 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:36:38,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38 WrapperNode [2020-10-16 13:36:38,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:36:38,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:36:38,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:36:38,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:36:38,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:38,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:36:39,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:36:39,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:36:39,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:36:39,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (1/1) ... [2020-10-16 13:36:39,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:36:39,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:36:39,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:36:39,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:36:39,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (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 13:36:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:36:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:36:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:36:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:36:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:36:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:36:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:36:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:36:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:36:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:36:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:36:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:36:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:36:39,118 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 13:36:39,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:36:39,487 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:36:39,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:39 BoogieIcfgContainer [2020-10-16 13:36:39,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:36:39,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:36:39,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:36:39,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:36:39,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:36:38" (1/3) ... [2020-10-16 13:36:39,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1bbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:39, skipping insertion in model container [2020-10-16 13:36:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:36:38" (2/3) ... [2020-10-16 13:36:39,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1bbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:36:39, skipping insertion in model container [2020-10-16 13:36:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:36:39" (3/3) ... [2020-10-16 13:36:39,498 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-10-16 13:36:39,510 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:36:39,510 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:36:39,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:36:39,518 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:36:39,548 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,549 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,549 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,550 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,550 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,551 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,551 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,552 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,552 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,553 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,553 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,554 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,557 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,558 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,558 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,564 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,564 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,569 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,569 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:36:39,572 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:36:39,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:36:39,604 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:36:39,605 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:36:39,605 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:36:39,605 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:36:39,605 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:36:39,605 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:36:39,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:36:39,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:36:39,618 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:36:39,619 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:39,621 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:39,622 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:36:39,666 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:36:39,666 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:36:39,671 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:36:39,674 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:36:40,831 INFO L132 LiptonReduction]: Checked pairs total: 2334 [2020-10-16 13:36:40,832 INFO L134 LiptonReduction]: Total number of compositions: 56 [2020-10-16 13:36:40,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-10-16 13:36:40,890 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-10-16 13:36:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-10-16 13:36:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:36:40,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:40,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:40,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1626400852, now seen corresponding path program 1 times [2020-10-16 13:36:40,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:40,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113103163] [2020-10-16 13:36:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:41,114 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 13:36:41,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113103163] [2020-10-16 13:36:41,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:41,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:41,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1195386281] [2020-10-16 13:36:41,118 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:41,121 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:41,134 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:36:41,135 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:41,138 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:41,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:36:41,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:41,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:36:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:36:41,152 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-10-16 13:36:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:41,176 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-10-16 13:36:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:36:41,178 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-16 13:36:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:41,194 INFO L225 Difference]: With dead ends: 362 [2020-10-16 13:36:41,194 INFO L226 Difference]: Without dead ends: 298 [2020-10-16 13:36:41,196 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 [2020-10-16 13:36:41,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-16 13:36:41,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-10-16 13:36:41,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-16 13:36:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-10-16 13:36:41,272 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-10-16 13:36:41,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:41,274 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-10-16 13:36:41,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:36:41,274 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-10-16 13:36:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:36:41,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:41,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:41,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:36:41,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1121187596, now seen corresponding path program 1 times [2020-10-16 13:36:41,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:41,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608244014] [2020-10-16 13:36:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:41,417 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 13:36:41,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608244014] [2020-10-16 13:36:41,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:41,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:41,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [122196686] [2020-10-16 13:36:41,419 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:41,420 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:41,421 INFO L258 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-10-16 13:36:41,421 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:41,422 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:41,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:41,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:41,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:41,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:41,425 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-10-16 13:36:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:41,463 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-10-16 13:36:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:41,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-16 13:36:41,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:41,467 INFO L225 Difference]: With dead ends: 346 [2020-10-16 13:36:41,468 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 13:36:41,469 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 13:36:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 13:36:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 13:36:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 13:36:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-10-16 13:36:41,493 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-10-16 13:36:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:41,493 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-10-16 13:36:41,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-10-16 13:36:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:36:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:41,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:41,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:36:41,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:41,497 INFO L82 PathProgramCache]: Analyzing trace with hash -397112394, now seen corresponding path program 1 times [2020-10-16 13:36:41,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:41,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816215275] [2020-10-16 13:36:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:41,576 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 13:36:41,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816215275] [2020-10-16 13:36:41,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:41,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:41,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1607343655] [2020-10-16 13:36:41,577 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:41,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:41,580 INFO L258 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-10-16 13:36:41,580 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:41,624 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:41,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:41,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:41,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:41,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:41,626 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-10-16 13:36:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:41,648 INFO L93 Difference]: Finished difference Result 310 states and 844 transitions. [2020-10-16 13:36:41,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:41,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:36:41,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:41,651 INFO L225 Difference]: With dead ends: 310 [2020-10-16 13:36:41,651 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 13:36:41,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 13:36:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 13:36:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 13:36:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 13:36:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 708 transitions. [2020-10-16 13:36:41,666 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 708 transitions. Word has length 10 [2020-10-16 13:36:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:41,666 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 708 transitions. [2020-10-16 13:36:41,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 708 transitions. [2020-10-16 13:36:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:36:41,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:41,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:41,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:36:41,669 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:41,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2136948955, now seen corresponding path program 1 times [2020-10-16 13:36:41,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:41,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277555765] [2020-10-16 13:36:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:41,737 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 13:36:41,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277555765] [2020-10-16 13:36:41,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:41,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:41,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2088125108] [2020-10-16 13:36:41,738 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:41,739 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:41,742 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 38 transitions. [2020-10-16 13:36:41,742 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:41,805 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:41,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:41,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:41,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:41,807 INFO L87 Difference]: Start difference. First operand 254 states and 708 transitions. Second operand 5 states. [2020-10-16 13:36:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:41,852 INFO L93 Difference]: Finished difference Result 320 states and 860 transitions. [2020-10-16 13:36:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:36:41,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-16 13:36:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:41,854 INFO L225 Difference]: With dead ends: 320 [2020-10-16 13:36:41,855 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 13:36:41,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 13:36:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-16 13:36:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 13:36:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 396 transitions. [2020-10-16 13:36:41,862 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 396 transitions. Word has length 11 [2020-10-16 13:36:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:41,862 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 396 transitions. [2020-10-16 13:36:41,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 396 transitions. [2020-10-16 13:36:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:36:41,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:41,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:41,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:36:41,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:41,865 INFO L82 PathProgramCache]: Analyzing trace with hash 625195173, now seen corresponding path program 1 times [2020-10-16 13:36:41,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:41,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60533811] [2020-10-16 13:36:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:41,919 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 13:36:41,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60533811] [2020-10-16 13:36:41,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:41,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:36:41,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1242793730] [2020-10-16 13:36:41,920 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:41,922 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:41,924 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-16 13:36:41,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:41,973 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:41,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:41,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:41,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:41,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:41,975 INFO L87 Difference]: Start difference. First operand 158 states and 396 transitions. Second operand 4 states. [2020-10-16 13:36:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:41,991 INFO L93 Difference]: Finished difference Result 170 states and 410 transitions. [2020-10-16 13:36:41,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:36:41,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:36:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:41,993 INFO L225 Difference]: With dead ends: 170 [2020-10-16 13:36:41,993 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:36:41,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 13:36:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:36:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:36:41,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:36:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 358 transitions. [2020-10-16 13:36:42,000 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 358 transitions. Word has length 12 [2020-10-16 13:36:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:42,000 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 358 transitions. [2020-10-16 13:36:42,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:42,000 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 358 transitions. [2020-10-16 13:36:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:36:42,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:42,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:42,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:36:42,002 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:42,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1939864517, now seen corresponding path program 1 times [2020-10-16 13:36:42,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:42,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957809009] [2020-10-16 13:36:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:42,056 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 13:36:42,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957809009] [2020-10-16 13:36:42,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:42,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:42,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1523920883] [2020-10-16 13:36:42,058 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:42,059 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:42,063 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 56 transitions. [2020-10-16 13:36:42,063 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:42,154 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:42,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:42,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:42,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:42,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:42,156 INFO L87 Difference]: Start difference. First operand 146 states and 358 transitions. Second operand 5 states. [2020-10-16 13:36:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:42,193 INFO L93 Difference]: Finished difference Result 176 states and 423 transitions. [2020-10-16 13:36:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:36:42,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:36:42,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:42,195 INFO L225 Difference]: With dead ends: 176 [2020-10-16 13:36:42,195 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 13:36:42,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 13:36:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-16 13:36:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 13:36:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-10-16 13:36:42,199 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-10-16 13:36:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:42,200 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-10-16 13:36:42,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-10-16 13:36:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:36:42,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:42,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:42,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:36:42,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash -484565939, now seen corresponding path program 1 times [2020-10-16 13:36:42,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:42,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152874701] [2020-10-16 13:36:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:42,243 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 13:36:42,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152874701] [2020-10-16 13:36:42,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:42,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:42,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1526716076] [2020-10-16 13:36:42,245 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:42,246 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:42,250 INFO L258 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-10-16 13:36:42,250 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:42,263 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,281 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,291 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,310 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,343 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5007#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:36:42,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:36:42,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:42,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:36:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:36:42,345 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-10-16 13:36:42,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:42,394 INFO L93 Difference]: Finished difference Result 90 states and 177 transitions. [2020-10-16 13:36:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:36:42,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 13:36:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:42,395 INFO L225 Difference]: With dead ends: 90 [2020-10-16 13:36:42,396 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 13:36:42,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:36:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 13:36:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 13:36:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:36:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 125 transitions. [2020-10-16 13:36:42,399 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 125 transitions. Word has length 14 [2020-10-16 13:36:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:42,399 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 125 transitions. [2020-10-16 13:36:42,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:36:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 125 transitions. [2020-10-16 13:36:42,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 13:36:42,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:42,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:42,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:36:42,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:42,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1105925332, now seen corresponding path program 1 times [2020-10-16 13:36:42,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:42,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031984958] [2020-10-16 13:36:42,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:42,449 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 13:36:42,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031984958] [2020-10-16 13:36:42,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:42,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:36:42,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [81521229] [2020-10-16 13:36:42,450 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:42,452 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:42,457 INFO L258 McrAutomatonBuilder]: Finished intersection with 44 states and 74 transitions. [2020-10-16 13:36:42,458 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:42,474 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:36:42,560 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5244#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:36:42,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:36:42,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:36:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:36:42,561 INFO L87 Difference]: Start difference. First operand 68 states and 125 transitions. Second operand 7 states. [2020-10-16 13:36:42,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:42,611 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2020-10-16 13:36:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:36:42,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-16 13:36:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:42,612 INFO L225 Difference]: With dead ends: 61 [2020-10-16 13:36:42,613 INFO L226 Difference]: Without dead ends: 55 [2020-10-16 13:36:42,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:36:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-16 13:36:42,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-16 13:36:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 13:36:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-10-16 13:36:42,617 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 16 [2020-10-16 13:36:42,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:42,617 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-10-16 13:36:42,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:36:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-10-16 13:36:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-16 13:36:42,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:36:42,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:36:42,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:36:42,618 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:36:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:36:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1123595488, now seen corresponding path program 1 times [2020-10-16 13:36:42,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:36:42,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461036198] [2020-10-16 13:36:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:36:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:36:42,659 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 13:36:42,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461036198] [2020-10-16 13:36:42,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:36:42,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:36:42,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [477286293] [2020-10-16 13:36:42,660 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:36:42,663 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:36:42,668 INFO L258 McrAutomatonBuilder]: Finished intersection with 43 states and 70 transitions. [2020-10-16 13:36:42,668 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:36:42,672 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:36:42,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:36:42,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:36:42,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:36:42,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:36:42,674 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-10-16 13:36:42,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:36:42,684 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-10-16 13:36:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:36:42,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-16 13:36:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:36:42,685 INFO L225 Difference]: With dead ends: 54 [2020-10-16 13:36:42,685 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:36:42,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 13:36:42,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:36:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:36:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:36:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:36:42,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-16 13:36:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:36:42,686 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:36:42,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:36:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:36:42,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:36:42,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:36:42,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:36:42 BasicIcfg [2020-10-16 13:36:42,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:36:42,693 INFO L168 Benchmark]: Toolchain (without parser) took 4499.02 ms. Allocated memory was 140.5 MB in the beginning and 246.9 MB in the end (delta: 106.4 MB). Free memory was 101.9 MB in the beginning and 100.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 107.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,694 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.11 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 101.5 MB in the beginning and 158.0 MB in the end (delta: -56.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.38 ms. Allocated memory is still 200.8 MB. Free memory was 158.0 MB in the beginning and 155.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,696 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,697 INFO L168 Benchmark]: RCFGBuilder took 441.07 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,698 INFO L168 Benchmark]: TraceAbstraction took 3200.62 ms. Allocated memory was 200.8 MB in the beginning and 246.9 MB in the end (delta: 46.1 MB). Free memory was 131.0 MB in the beginning and 100.4 MB in the end (delta: 30.6 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:36:42,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.11 ms. Allocated memory was 140.5 MB in the beginning and 200.8 MB in the end (delta: 60.3 MB). Free memory was 101.5 MB in the beginning and 158.0 MB in the end (delta: -56.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 86.38 ms. Allocated memory is still 200.8 MB. Free memory was 158.0 MB in the beginning and 155.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 200.8 MB. Free memory was 155.4 MB in the beginning and 154.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.07 ms. Allocated memory is still 200.8 MB. Free memory was 154.2 MB in the beginning and 131.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3200.62 ms. Allocated memory was 200.8 MB in the beginning and 246.9 MB in the end (delta: 46.1 MB). Free memory was 131.0 MB in the beginning and 100.4 MB in the end (delta: 30.6 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 643 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 51 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 78 PlacesBefore, 32 PlacesAfterwards, 70 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 2334 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 193 SDtfs, 160 SDslu, 286 SDs, 0 SdLazy, 107 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...