/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:19:21,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:19:21,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:19:21,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:19:21,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:19:21,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:19:21,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:19:21,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:19:21,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:19:22,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:19:22,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:19:22,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:19:22,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:19:22,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:19:22,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:19:22,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:19:22,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:19:22,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:19:22,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:19:22,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:19:22,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:19:22,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:19:22,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:19:22,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:19:22,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 11:19:22,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:19:22,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:19:22,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:19:22,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:19:22,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:19:22,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:19:22,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:19:22,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:19:22,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:19:22,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:19:22,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:19:22,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 11:19:22,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:19:22,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:19:22,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:19:22,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:19:22,103 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:19:22,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:19:22,103 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:19:22,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:19:22,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:19:22,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:19:22,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:19:22,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:19:22,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:19:22,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:19:22,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:19:22,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:19:22,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:19:22,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:19:22,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:19:22,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:19:22,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:19:22,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:19:22,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:19:22,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:19:22,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:19:22,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:19:22,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:19:22,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:19:22,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:19:22,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:19:22,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:19:22,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:19:22,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:19:22,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:19:22,411 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:19:22,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 11:19:22,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2db8133/165490c5515b4764835bed59df6efbc9/FLAG4b306cd97 [2020-10-16 11:19:23,115 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:19:23,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2020-10-16 11:19:23,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2db8133/165490c5515b4764835bed59df6efbc9/FLAG4b306cd97 [2020-10-16 11:19:23,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2db8133/165490c5515b4764835bed59df6efbc9 [2020-10-16 11:19:23,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:19:23,352 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:19:23,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:23,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:19:23,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:19:23,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:23" (1/1) ... [2020-10-16 11:19:23,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a6f078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:23, skipping insertion in model container [2020-10-16 11:19:23,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:19:23" (1/1) ... [2020-10-16 11:19:23,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:19:23,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:19:23,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:23,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:19:23,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:19:24,039 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:19:24,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24 WrapperNode [2020-10-16 11:19:24,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:19:24,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:24,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:19:24,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:19:24,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:19:24,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:19:24,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:19:24,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:19:24,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (1/1) ... [2020-10-16 11:19:24,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:19:24,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:19:24,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:19:24,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:19:24,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (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 11:19:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:19:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:19:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:19:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:19:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:19:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:19:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:19:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:19:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:19:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:19:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 11:19:24,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 11:19:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:19:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:19:24,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:19:24,209 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 11:19:24,604 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:19:24,604 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:19:24,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:24 BoogieIcfgContainer [2020-10-16 11:19:24,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:19:24,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:19:24,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:19:24,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:19:24,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:19:23" (1/3) ... [2020-10-16 11:19:24,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dabc7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:24, skipping insertion in model container [2020-10-16 11:19:24,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:19:24" (2/3) ... [2020-10-16 11:19:24,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dabc7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:19:24, skipping insertion in model container [2020-10-16 11:19:24,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:19:24" (3/3) ... [2020-10-16 11:19:24,617 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2020-10-16 11:19:24,631 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:19:24,631 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:19:24,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:19:24,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:19:24,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,679 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,680 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,680 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,680 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,681 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,681 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,685 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,686 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,686 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,686 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,696 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,697 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,702 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,708 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,708 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,709 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:19:24,714 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:19:24,730 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 11:19:24,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:19:24,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:19:24,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:19:24,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:19:24,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:19:24,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:19:24,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:19:24,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:19:24,772 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:19:24,775 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 11:19:24,777 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 11:19:24,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 11:19:24,827 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 11:19:24,827 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:19:24,833 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 11:19:24,837 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 11:19:26,473 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 11:19:26,474 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 11:19:26,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 11:19:26,538 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 11:19:26,541 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 11:19:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:19:26,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:26,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:26,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 11:19:26,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:26,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730529863] [2020-10-16 11:19:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:26,757 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 11:19:26,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730529863] [2020-10-16 11:19:26,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:26,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:26,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266440637] [2020-10-16 11:19:26,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 11:19:26,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 11:19:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 11:19:26,784 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 11:19:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:26,830 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 11:19:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 11:19:26,832 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 11:19:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:26,862 INFO L225 Difference]: With dead ends: 850 [2020-10-16 11:19:26,862 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 11:19:26,864 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 11:19:26,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 11:19:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 11:19:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 11:19:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 11:19:26,997 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 11:19:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:26,999 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 11:19:26,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 11:19:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 11:19:27,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:19:27,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:19:27,003 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,003 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 11:19:27,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444561987] [2020-10-16 11:19:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,157 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 11:19:27,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444561987] [2020-10-16 11:19:27,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:27,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045211751] [2020-10-16 11:19:27,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:27,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:27,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:27,161 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 11:19:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,211 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 11:19:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:27,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:19:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,218 INFO L225 Difference]: With dead ends: 802 [2020-10-16 11:19:27,218 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 11:19:27,219 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 11:19:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 11:19:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 11:19:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 11:19:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 11:19:27,275 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 11:19:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,275 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 11:19:27,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 11:19:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:19:27,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:19:27,279 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1501347001, now seen corresponding path program 1 times [2020-10-16 11:19:27,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469382448] [2020-10-16 11:19:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,353 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 11:19:27,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469382448] [2020-10-16 11:19:27,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:27,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268112686] [2020-10-16 11:19:27,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:27,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:27,356 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 11:19:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,387 INFO L93 Difference]: Finished difference Result 718 states and 2348 transitions. [2020-10-16 11:19:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:27,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 11:19:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,394 INFO L225 Difference]: With dead ends: 718 [2020-10-16 11:19:27,394 INFO L226 Difference]: Without dead ends: 598 [2020-10-16 11:19:27,395 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 11:19:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-10-16 11:19:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2020-10-16 11:19:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 598 states. [2020-10-16 11:19:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1992 transitions. [2020-10-16 11:19:27,420 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1992 transitions. Word has length 12 [2020-10-16 11:19:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,420 INFO L481 AbstractCegarLoop]: Abstraction has 598 states and 1992 transitions. [2020-10-16 11:19:27,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1992 transitions. [2020-10-16 11:19:27,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:19:27,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:19:27,423 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1422147839, now seen corresponding path program 1 times [2020-10-16 11:19:27,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191455051] [2020-10-16 11:19:27,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,487 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 11:19:27,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191455051] [2020-10-16 11:19:27,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:27,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459641274] [2020-10-16 11:19:27,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:27,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:27,490 INFO L87 Difference]: Start difference. First operand 598 states and 1992 transitions. Second operand 5 states. [2020-10-16 11:19:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,540 INFO L93 Difference]: Finished difference Result 928 states and 3061 transitions. [2020-10-16 11:19:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:27,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 11:19:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,545 INFO L225 Difference]: With dead ends: 928 [2020-10-16 11:19:27,545 INFO L226 Difference]: Without dead ends: 550 [2020-10-16 11:19:27,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-16 11:19:27,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-10-16 11:19:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-16 11:19:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1794 transitions. [2020-10-16 11:19:27,567 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1794 transitions. Word has length 13 [2020-10-16 11:19:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,568 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1794 transitions. [2020-10-16 11:19:27,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1794 transitions. [2020-10-16 11:19:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 11:19:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:19:27,570 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash 702868169, now seen corresponding path program 2 times [2020-10-16 11:19:27,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185175971] [2020-10-16 11:19:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,622 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 11:19:27,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185175971] [2020-10-16 11:19:27,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:19:27,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253750461] [2020-10-16 11:19:27,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:27,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:27,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:27,625 INFO L87 Difference]: Start difference. First operand 550 states and 1794 transitions. Second operand 4 states. [2020-10-16 11:19:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,658 INFO L93 Difference]: Finished difference Result 586 states and 1860 transitions. [2020-10-16 11:19:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:27,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 11:19:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,663 INFO L225 Difference]: With dead ends: 586 [2020-10-16 11:19:27,663 INFO L226 Difference]: Without dead ends: 514 [2020-10-16 11:19:27,664 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 11:19:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-16 11:19:27,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2020-10-16 11:19:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2020-10-16 11:19:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1656 transitions. [2020-10-16 11:19:27,684 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1656 transitions. Word has length 13 [2020-10-16 11:19:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,685 INFO L481 AbstractCegarLoop]: Abstraction has 514 states and 1656 transitions. [2020-10-16 11:19:27,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1656 transitions. [2020-10-16 11:19:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:19:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:19:27,687 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,688 INFO L82 PathProgramCache]: Analyzing trace with hash -464753782, now seen corresponding path program 1 times [2020-10-16 11:19:27,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302432972] [2020-10-16 11:19:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,755 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 11:19:27,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302432972] [2020-10-16 11:19:27,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:27,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914365010] [2020-10-16 11:19:27,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:27,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:27,757 INFO L87 Difference]: Start difference. First operand 514 states and 1656 transitions. Second operand 4 states. [2020-10-16 11:19:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,791 INFO L93 Difference]: Finished difference Result 776 states and 2379 transitions. [2020-10-16 11:19:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:27,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 11:19:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,796 INFO L225 Difference]: With dead ends: 776 [2020-10-16 11:19:27,796 INFO L226 Difference]: Without dead ends: 550 [2020-10-16 11:19:27,796 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 11:19:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-16 11:19:27,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 478. [2020-10-16 11:19:27,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-16 11:19:27,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1450 transitions. [2020-10-16 11:19:27,814 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1450 transitions. Word has length 14 [2020-10-16 11:19:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,815 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 1450 transitions. [2020-10-16 11:19:27,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1450 transitions. [2020-10-16 11:19:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:19:27,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:19:27,817 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,817 INFO L82 PathProgramCache]: Analyzing trace with hash -281370534, now seen corresponding path program 1 times [2020-10-16 11:19:27,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216350446] [2020-10-16 11:19:27,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:27,870 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 11:19:27,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216350446] [2020-10-16 11:19:27,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:27,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:27,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489993629] [2020-10-16 11:19:27,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:27,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:27,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:27,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:27,873 INFO L87 Difference]: Start difference. First operand 478 states and 1450 transitions. Second operand 5 states. [2020-10-16 11:19:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:27,926 INFO L93 Difference]: Finished difference Result 668 states and 1981 transitions. [2020-10-16 11:19:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:27,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 11:19:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:27,929 INFO L225 Difference]: With dead ends: 668 [2020-10-16 11:19:27,929 INFO L226 Difference]: Without dead ends: 326 [2020-10-16 11:19:27,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 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 11:19:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-16 11:19:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2020-10-16 11:19:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-10-16 11:19:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 955 transitions. [2020-10-16 11:19:27,941 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 955 transitions. Word has length 14 [2020-10-16 11:19:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:27,942 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 955 transitions. [2020-10-16 11:19:27,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 955 transitions. [2020-10-16 11:19:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 11:19:27,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:27,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:27,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:19:27,943 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:27,944 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 1 times [2020-10-16 11:19:27,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:27,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119658381] [2020-10-16 11:19:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,030 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 11:19:28,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119658381] [2020-10-16 11:19:28,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:28,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642485227] [2020-10-16 11:19:28,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:28,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:28,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:28,033 INFO L87 Difference]: Start difference. First operand 326 states and 955 transitions. Second operand 4 states. [2020-10-16 11:19:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,082 INFO L93 Difference]: Finished difference Result 390 states and 1053 transitions. [2020-10-16 11:19:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:19:28,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 11:19:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,086 INFO L225 Difference]: With dead ends: 390 [2020-10-16 11:19:28,086 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 11:19:28,088 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 11:19:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 11:19:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-10-16 11:19:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-10-16 11:19:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 804 transitions. [2020-10-16 11:19:28,108 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 804 transitions. Word has length 15 [2020-10-16 11:19:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,109 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 804 transitions. [2020-10-16 11:19:28,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 804 transitions. [2020-10-16 11:19:28,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 11:19:28,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:28,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:28,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:19:28,110 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:28,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1481069530, now seen corresponding path program 1 times [2020-10-16 11:19:28,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:28,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409799638] [2020-10-16 11:19:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,204 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 11:19:28,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409799638] [2020-10-16 11:19:28,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:28,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311233552] [2020-10-16 11:19:28,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:28,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:28,208 INFO L87 Difference]: Start difference. First operand 293 states and 804 transitions. Second operand 5 states. [2020-10-16 11:19:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,261 INFO L93 Difference]: Finished difference Result 296 states and 728 transitions. [2020-10-16 11:19:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:28,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 11:19:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,265 INFO L225 Difference]: With dead ends: 296 [2020-10-16 11:19:28,266 INFO L226 Difference]: Without dead ends: 218 [2020-10-16 11:19:28,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 11:19:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-16 11:19:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-16 11:19:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-16 11:19:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 525 transitions. [2020-10-16 11:19:28,278 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 525 transitions. Word has length 16 [2020-10-16 11:19:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,278 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 525 transitions. [2020-10-16 11:19:28,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 525 transitions. [2020-10-16 11:19:28,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:19:28,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:28,279 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:28,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 11:19:28,280 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:28,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:28,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 11:19:28,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:28,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190561779] [2020-10-16 11:19:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,374 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 11:19:28,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190561779] [2020-10-16 11:19:28,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 11:19:28,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939082112] [2020-10-16 11:19:28,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:19:28,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:19:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:19:28,377 INFO L87 Difference]: Start difference. First operand 218 states and 525 transitions. Second operand 6 states. [2020-10-16 11:19:28,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,435 INFO L93 Difference]: Finished difference Result 196 states and 441 transitions. [2020-10-16 11:19:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:19:28,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 11:19:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,437 INFO L225 Difference]: With dead ends: 196 [2020-10-16 11:19:28,437 INFO L226 Difference]: Without dead ends: 157 [2020-10-16 11:19:28,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 11:19:28,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-16 11:19:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-10-16 11:19:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 11:19:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-10-16 11:19:28,443 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 17 [2020-10-16 11:19:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,445 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-10-16 11:19:28,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:19:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-10-16 11:19:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:19:28,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:28,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:28,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 11:19:28,446 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:28,447 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-16 11:19:28,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:28,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767770107] [2020-10-16 11:19:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,500 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 11:19:28,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767770107] [2020-10-16 11:19:28,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:19:28,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067134401] [2020-10-16 11:19:28,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:19:28,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:19:28,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:19:28,502 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-10-16 11:19:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,540 INFO L93 Difference]: Finished difference Result 197 states and 430 transitions. [2020-10-16 11:19:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:19:28,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-16 11:19:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,542 INFO L225 Difference]: With dead ends: 197 [2020-10-16 11:19:28,542 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 11:19:28,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 11:19:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2020-10-16 11:19:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 11:19:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 314 transitions. [2020-10-16 11:19:28,548 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 314 transitions. Word has length 19 [2020-10-16 11:19:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,549 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 314 transitions. [2020-10-16 11:19:28,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:19:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 314 transitions. [2020-10-16 11:19:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 11:19:28,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:28,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:28,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 11:19:28,554 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:28,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-16 11:19:28,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499867764] [2020-10-16 11:19:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,652 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 11:19:28,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499867764] [2020-10-16 11:19:28,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 11:19:28,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689404288] [2020-10-16 11:19:28,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 11:19:28,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 11:19:28,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 11:19:28,654 INFO L87 Difference]: Start difference. First operand 144 states and 314 transitions. Second operand 7 states. [2020-10-16 11:19:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,720 INFO L93 Difference]: Finished difference Result 133 states and 290 transitions. [2020-10-16 11:19:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 11:19:28,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-16 11:19:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,722 INFO L225 Difference]: With dead ends: 133 [2020-10-16 11:19:28,722 INFO L226 Difference]: Without dead ends: 52 [2020-10-16 11:19:28,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 11:19:28,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-16 11:19:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-16 11:19:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-16 11:19:28,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-16 11:19:28,725 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 19 [2020-10-16 11:19:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,725 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-16 11:19:28,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 11:19:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-16 11:19:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-16 11:19:28,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:19:28,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:19:28,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 11:19:28,726 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:19:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:19:28,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2139262285, now seen corresponding path program 1 times [2020-10-16 11:19:28,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:19:28,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247681426] [2020-10-16 11:19:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:19:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:19:28,763 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 11:19:28,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247681426] [2020-10-16 11:19:28,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:19:28,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:19:28,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482457595] [2020-10-16 11:19:28,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:19:28,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:19:28,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:19:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:19:28,766 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 4 states. [2020-10-16 11:19:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:19:28,781 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-16 11:19:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:19:28,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-16 11:19:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:19:28,782 INFO L225 Difference]: With dead ends: 51 [2020-10-16 11:19:28,782 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:19:28,783 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 11:19:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:19:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:19:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:19:28,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:19:28,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-10-16 11:19:28,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:19:28,784 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:19:28,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:19:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:19:28,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:19:28,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 11:19:28,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:19:28 BasicIcfg [2020-10-16 11:19:28,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:19:28,791 INFO L168 Benchmark]: Toolchain (without parser) took 5438.68 ms. Allocated memory was 140.5 MB in the beginning and 278.4 MB in the end (delta: 137.9 MB). Free memory was 102.3 MB in the beginning and 133.4 MB in the end (delta: -31.1 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,792 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.42 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 101.9 MB in the beginning and 164.6 MB in the end (delta: -62.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.44 ms. Allocated memory is still 206.6 MB. Free memory was 164.6 MB in the beginning and 162.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,794 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 206.6 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,795 INFO L168 Benchmark]: RCFGBuilder took 463.52 ms. Allocated memory is still 206.6 MB. Free memory was 160.8 MB in the beginning and 137.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,796 INFO L168 Benchmark]: TraceAbstraction took 4179.33 ms. Allocated memory was 206.6 MB in the beginning and 278.4 MB in the end (delta: 71.8 MB). Free memory was 136.2 MB in the beginning and 133.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-10-16 11:19:28,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.42 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 101.9 MB in the beginning and 164.6 MB in the end (delta: -62.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 74.44 ms. Allocated memory is still 206.6 MB. Free memory was 164.6 MB in the beginning and 162.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 206.6 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 463.52 ms. Allocated memory is still 206.6 MB. Free memory was 160.8 MB in the beginning and 137.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4179.33 ms. Allocated memory was 206.6 MB in the beginning and 278.4 MB in the end (delta: 71.8 MB). Free memory was 136.2 MB in the beginning and 133.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1223 VarBasedMoverChecksPositive, 53 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 103 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 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 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 345 SDtfs, 327 SDslu, 580 SDs, 0 SdLazy, 232 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 76 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 7691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...