/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-12 00:07:18,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-12 00:07:18,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-12 00:07:18,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-12 00:07:18,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-12 00:07:18,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-12 00:07:18,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-12 00:07:18,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-12 00:07:18,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-12 00:07:18,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-12 00:07:18,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-12 00:07:18,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-12 00:07:18,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-12 00:07:18,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-12 00:07:18,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-12 00:07:18,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-12 00:07:18,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-12 00:07:18,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-12 00:07:18,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-12 00:07:18,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-12 00:07:18,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-12 00:07:18,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-12 00:07:18,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-12 00:07:18,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-12 00:07:18,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-12 00:07:18,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-12 00:07:18,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-12 00:07:18,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-12 00:07:18,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-12 00:07:18,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-12 00:07:18,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-12 00:07:18,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-12 00:07:18,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-12 00:07:18,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-12 00:07:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-12 00:07:18,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-12 00:07:18,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-12 00:07:18,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-12 00:07:18,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-12 00:07:18,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-12 00:07:18,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-12 00:07:18,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-12 00:07:18,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-12 00:07:18,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-12 00:07:18,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-12 00:07:18,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-12 00:07:18,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-12 00:07:18,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-12 00:07:18,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-12 00:07:18,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-12 00:07:18,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-12 00:07:18,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-12 00:07:18,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-12 00:07:18,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-12 00:07:18,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-12 00:07:18,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-12 00:07:18,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-12 00:07:18,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-12 00:07:18,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-12 00:07:18,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-12 00:07:18,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-12 00:07:18,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-12 00:07:18,563 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-12 00:07:18,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-12 00:07:19,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-12 00:07:19,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-12 00:07:19,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-12 00:07:19,024 INFO L275 PluginConnector]: CDTParser initialized [2020-09-12 00:07:19,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-12 00:07:19,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/409a866b5/cc24ba5ebcf5471b86e39a9ff7d5fcfd/FLAG8dbd90528 [2020-09-12 00:07:19,765 INFO L306 CDTParser]: Found 1 translation units. [2020-09-12 00:07:19,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-09-12 00:07:19,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/409a866b5/cc24ba5ebcf5471b86e39a9ff7d5fcfd/FLAG8dbd90528 [2020-09-12 00:07:19,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/409a866b5/cc24ba5ebcf5471b86e39a9ff7d5fcfd [2020-09-12 00:07:20,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-12 00:07:20,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-12 00:07:20,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-12 00:07:20,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-12 00:07:20,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-12 00:07:20,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:07:19" (1/1) ... [2020-09-12 00:07:20,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20, skipping insertion in model container [2020-09-12 00:07:20,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 12:07:19" (1/1) ... [2020-09-12 00:07:20,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-12 00:07:20,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-12 00:07:20,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:07:20,724 INFO L203 MainTranslator]: Completed pre-run [2020-09-12 00:07:20,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-12 00:07:20,851 INFO L208 MainTranslator]: Completed translation [2020-09-12 00:07:20,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20 WrapperNode [2020-09-12 00:07:20,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-12 00:07:20,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-12 00:07:20,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-12 00:07:20,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-12 00:07:20,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-12 00:07:20,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-12 00:07:20,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-12 00:07:20,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-12 00:07:20,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (1/1) ... [2020-09-12 00:07:20,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-12 00:07:20,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-12 00:07:20,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-12 00:07:20,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-12 00:07:20,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (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 [2020-09-12 00:07:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-12 00:07:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-12 00:07:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-12 00:07:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-12 00:07:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-12 00:07:21,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-12 00:07:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-12 00:07:21,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-12 00:07:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-12 00:07:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-12 00:07:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-12 00:07:21,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-12 00:07:21,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-12 00:07:21,026 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-12 00:07:21,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-12 00:07:21,430 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-12 00:07:21,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:07:21 BoogieIcfgContainer [2020-09-12 00:07:21,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-12 00:07:21,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-12 00:07:21,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-12 00:07:21,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-12 00:07:21,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 12:07:19" (1/3) ... [2020-09-12 00:07:21,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf15d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:07:21, skipping insertion in model container [2020-09-12 00:07:21,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 12:07:20" (2/3) ... [2020-09-12 00:07:21,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbf15d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 12:07:21, skipping insertion in model container [2020-09-12 00:07:21,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 12:07:21" (3/3) ... [2020-09-12 00:07:21,445 INFO L109 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-09-12 00:07:21,457 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-12 00:07:21,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-12 00:07:21,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-12 00:07:21,470 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-12 00:07:21,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,500 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,501 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,501 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,502 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,504 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,504 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,504 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,510 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,511 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,519 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,519 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,520 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,525 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,526 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,526 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-12 00:07:21,550 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-12 00:07:21,577 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-12 00:07:21,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-12 00:07:21,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-12 00:07:21,578 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-12 00:07:21,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-12 00:07:21,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-12 00:07:21,580 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-12 00:07:21,580 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-12 00:07:21,598 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:21,600 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:21,646 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:07:21,647 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:07:21,653 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:07:21,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-12 00:07:21,677 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-12 00:07:21,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-12 00:07:21,678 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-12 00:07:21,681 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-12 00:07:21,682 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-12 00:07:22,822 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-12 00:07:23,128 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2238 [2020-09-12 00:07:23,129 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2020-09-12 00:07:23,133 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-12 00:07:23,162 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-12 00:07:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-12 00:07:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-12 00:07:23,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:23,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:23,175 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:23,183 INFO L82 PathProgramCache]: Analyzing trace with hash -389059823, now seen corresponding path program 1 times [2020-09-12 00:07:23,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:23,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62261337] [2020-09-12 00:07:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:23,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62261337] [2020-09-12 00:07:23,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:23,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:07:23,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [76549671] [2020-09-12 00:07:23,492 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:23,497 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:23,512 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-12 00:07:23,512 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:23,514 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:23,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:23,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:23,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:23,537 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-12 00:07:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:23,579 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-12 00:07:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:23,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-12 00:07:23,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:23,601 INFO L225 Difference]: With dead ends: 290 [2020-09-12 00:07:23,601 INFO L226 Difference]: Without dead ends: 226 [2020-09-12 00:07:23,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:23,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-12 00:07:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-12 00:07:23,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-12 00:07:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-12 00:07:23,683 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-12 00:07:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:23,685 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-12 00:07:23,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-12 00:07:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-12 00:07:23,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:23,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:23,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-12 00:07:23,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:23,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:23,688 INFO L82 PathProgramCache]: Analyzing trace with hash 824029864, now seen corresponding path program 1 times [2020-09-12 00:07:23,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:23,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958887258] [2020-09-12 00:07:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:23,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958887258] [2020-09-12 00:07:23,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:23,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-12 00:07:23,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [586224285] [2020-09-12 00:07:23,802 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:23,803 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:23,805 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-09-12 00:07:23,805 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:23,816 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:23,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:23,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:23,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:23,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:23,819 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-12 00:07:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:23,831 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-12 00:07:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:23,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-12 00:07:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:23,835 INFO L225 Difference]: With dead ends: 220 [2020-09-12 00:07:23,835 INFO L226 Difference]: Without dead ends: 220 [2020-09-12 00:07:23,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-12 00:07:23,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-12 00:07:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-12 00:07:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-12 00:07:23,858 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-12 00:07:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:23,858 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-12 00:07:23,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-12 00:07:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-12 00:07:23,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:23,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:23,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-12 00:07:23,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash -224925294, now seen corresponding path program 1 times [2020-09-12 00:07:23,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:23,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91670418] [2020-09-12 00:07:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:23,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91670418] [2020-09-12 00:07:23,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:23,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:23,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1534525154] [2020-09-12 00:07:23,974 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:23,975 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:23,977 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-12 00:07:23,978 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,031 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:07:24,060 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-12 00:07:24,088 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:07:24,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:07:24,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:07:24,090 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 4 states. [2020-09-12 00:07:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,133 INFO L93 Difference]: Finished difference Result 240 states and 599 transitions. [2020-09-12 00:07:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-12 00:07:24,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-12 00:07:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,136 INFO L225 Difference]: With dead ends: 240 [2020-09-12 00:07:24,136 INFO L226 Difference]: Without dead ends: 176 [2020-09-12 00:07:24,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:07:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-12 00:07:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-09-12 00:07:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-12 00:07:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 428 transitions. [2020-09-12 00:07:24,152 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 428 transitions. Word has length 10 [2020-09-12 00:07:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,153 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 428 transitions. [2020-09-12 00:07:24,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:07:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 428 transitions. [2020-09-12 00:07:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-12 00:07:24,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-12 00:07:24,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1617246421, now seen corresponding path program 1 times [2020-09-12 00:07:24,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852398680] [2020-09-12 00:07:24,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852398680] [2020-09-12 00:07:24,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:24,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [673996467] [2020-09-12 00:07:24,213 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,214 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,216 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-12 00:07:24,216 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,216 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:24,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:24,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,217 INFO L87 Difference]: Start difference. First operand 176 states and 428 transitions. Second operand 3 states. [2020-09-12 00:07:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,227 INFO L93 Difference]: Finished difference Result 225 states and 522 transitions. [2020-09-12 00:07:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:24,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-12 00:07:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,229 INFO L225 Difference]: With dead ends: 225 [2020-09-12 00:07:24,230 INFO L226 Difference]: Without dead ends: 183 [2020-09-12 00:07:24,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-09-12 00:07:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2020-09-12 00:07:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-12 00:07:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 396 transitions. [2020-09-12 00:07:24,240 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 396 transitions. Word has length 11 [2020-09-12 00:07:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,241 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 396 transitions. [2020-09-12 00:07:24,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 396 transitions. [2020-09-12 00:07:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-12 00:07:24,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-12 00:07:24,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1444727206, now seen corresponding path program 1 times [2020-09-12 00:07:24,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042207485] [2020-09-12 00:07:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042207485] [2020-09-12 00:07:24,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:07:24,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [633570138] [2020-09-12 00:07:24,345 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,346 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,349 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 44 transitions. [2020-09-12 00:07:24,349 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,485 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3257#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:07:24,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-12 00:07:24,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-12 00:07:24,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-12 00:07:24,486 INFO L87 Difference]: Start difference. First operand 171 states and 396 transitions. Second operand 6 states. [2020-09-12 00:07:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,556 INFO L93 Difference]: Finished difference Result 162 states and 347 transitions. [2020-09-12 00:07:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-12 00:07:24,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-12 00:07:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,558 INFO L225 Difference]: With dead ends: 162 [2020-09-12 00:07:24,558 INFO L226 Difference]: Without dead ends: 125 [2020-09-12 00:07:24,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 10 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:07:24,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-12 00:07:24,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-12 00:07:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-12 00:07:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 263 transitions. [2020-09-12 00:07:24,564 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 263 transitions. Word has length 12 [2020-09-12 00:07:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,564 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 263 transitions. [2020-09-12 00:07:24,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-12 00:07:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 263 transitions. [2020-09-12 00:07:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:07:24,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-12 00:07:24,567 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1109140729, now seen corresponding path program 1 times [2020-09-12 00:07:24,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141623990] [2020-09-12 00:07:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141623990] [2020-09-12 00:07:24,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-12 00:07:24,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [583939563] [2020-09-12 00:07:24,620 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,622 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,627 INFO L274 McrAutomatonBuilder]: Finished intersection with 39 states and 66 transitions. [2020-09-12 00:07:24,627 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,711 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:24,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-12 00:07:24,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-12 00:07:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,713 INFO L87 Difference]: Start difference. First operand 125 states and 263 transitions. Second operand 3 states. [2020-09-12 00:07:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,723 INFO L93 Difference]: Finished difference Result 157 states and 314 transitions. [2020-09-12 00:07:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-12 00:07:24,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-12 00:07:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,725 INFO L225 Difference]: With dead ends: 157 [2020-09-12 00:07:24,725 INFO L226 Difference]: Without dead ends: 120 [2020-09-12 00:07:24,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-12 00:07:24,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-12 00:07:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-09-12 00:07:24,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-12 00:07:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 233 transitions. [2020-09-12 00:07:24,730 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 233 transitions. Word has length 14 [2020-09-12 00:07:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,731 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 233 transitions. [2020-09-12 00:07:24,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-12 00:07:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 233 transitions. [2020-09-12 00:07:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-12 00:07:24,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-12 00:07:24,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1574578981, now seen corresponding path program 1 times [2020-09-12 00:07:24,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459527512] [2020-09-12 00:07:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:24,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459527512] [2020-09-12 00:07:24,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:24,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-12 00:07:24,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [98799062] [2020-09-12 00:07:24,843 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:24,844 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:24,847 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 40 transitions. [2020-09-12 00:07:24,848 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:24,860 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4074#(<= ~__unbuffered_cnt~0 0)] [2020-09-12 00:07:24,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-12 00:07:24,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:24,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-12 00:07:24,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-12 00:07:24,861 INFO L87 Difference]: Start difference. First operand 118 states and 233 transitions. Second operand 7 states. [2020-09-12 00:07:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:24,917 INFO L93 Difference]: Finished difference Result 112 states and 219 transitions. [2020-09-12 00:07:24,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-12 00:07:24,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-12 00:07:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:24,918 INFO L225 Difference]: With dead ends: 112 [2020-09-12 00:07:24,918 INFO L226 Difference]: Without dead ends: 36 [2020-09-12 00:07:24,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-12 00:07:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-12 00:07:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-12 00:07:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-12 00:07:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-12 00:07:24,921 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 14 [2020-09-12 00:07:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:24,921 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-12 00:07:24,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-12 00:07:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-12 00:07:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-12 00:07:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-12 00:07:24,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-12 00:07:24,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-12 00:07:24,923 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-12 00:07:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-12 00:07:24,924 INFO L82 PathProgramCache]: Analyzing trace with hash 16794271, now seen corresponding path program 1 times [2020-09-12 00:07:24,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-12 00:07:24,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24677601] [2020-09-12 00:07:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-12 00:07:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-12 00:07:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-12 00:07:25,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24677601] [2020-09-12 00:07:25,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-12 00:07:25,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-12 00:07:25,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [229146475] [2020-09-12 00:07:25,002 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-12 00:07:25,004 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-12 00:07:25,016 INFO L274 McrAutomatonBuilder]: Finished intersection with 67 states and 122 transitions. [2020-09-12 00:07:25,017 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-12 00:07:25,087 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-12 00:07:25,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-12 00:07:25,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-12 00:07:25,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-12 00:07:25,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-12 00:07:25,089 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-09-12 00:07:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-12 00:07:25,102 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-12 00:07:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-12 00:07:25,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-12 00:07:25,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-12 00:07:25,102 INFO L225 Difference]: With dead ends: 35 [2020-09-12 00:07:25,103 INFO L226 Difference]: Without dead ends: 0 [2020-09-12 00:07:25,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-12 00:07:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-12 00:07:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-12 00:07:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-12 00:07:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-12 00:07:25,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-12 00:07:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-12 00:07:25,105 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-12 00:07:25,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-12 00:07:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-12 00:07:25,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-12 00:07:25,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-12 00:07:25,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 12:07:25 BasicIcfg [2020-09-12 00:07:25,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-12 00:07:25,120 INFO L168 Benchmark]: Toolchain (without parser) took 5108.95 ms. Allocated memory was 145.8 MB in the beginning and 249.6 MB in the end (delta: 103.8 MB). Free memory was 101.8 MB in the beginning and 143.9 MB in the end (delta: -42.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,121 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-12 00:07:25,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.53 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.33 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,124 INFO L168 Benchmark]: Boogie Preprocessor took 30.32 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,128 INFO L168 Benchmark]: RCFGBuilder took 492.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 134.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,129 INFO L168 Benchmark]: TraceAbstraction took 3674.37 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.4 MB in the beginning and 143.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2020-09-12 00:07:25,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 842.53 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 160.3 MB in the end (delta: -59.1 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.33 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.32 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.49 ms. Allocated memory is still 202.9 MB. Free memory was 156.9 MB in the beginning and 134.4 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3674.37 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 134.4 MB in the beginning and 143.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 635 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2238 CheckedPairsTotal, 55 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 157 SDtfs, 105 SDslu, 204 SDs, 0 SdLazy, 104 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 12 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 2531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...