/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/safe025_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-16 00:27:16,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 00:27:16,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 00:27:16,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 00:27:16,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 00:27:16,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 00:27:16,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 00:27:16,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 00:27:16,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 00:27:16,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 00:27:16,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 00:27:16,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 00:27:16,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 00:27:16,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 00:27:16,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 00:27:16,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 00:27:16,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 00:27:16,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 00:27:16,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 00:27:16,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 00:27:16,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 00:27:16,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 00:27:16,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 00:27:16,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 00:27:16,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 00:27:16,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 00:27:16,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 00:27:16,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 00:27:16,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 00:27:16,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 00:27:16,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 00:27:16,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 00:27:16,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 00:27:16,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 00:27:16,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 00:27:16,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 00:27:16,539 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 [2020-09-16 00:27:16,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 00:27:16,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 00:27:16,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 00:27:16,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 00:27:16,566 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 00:27:16,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 00:27:16,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 00:27:16,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 00:27:16,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 00:27:16,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 00:27:16,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 00:27:16,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 00:27:16,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 00:27:16,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 00:27:16,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 00:27:16,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 00:27:16,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 00:27:16,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 00:27:16,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 00:27:16,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 00:27:16,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 00:27:16,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 00:27:16,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 00:27:16,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-16 00:27:16,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 00:27:16,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 00:27:16,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 00:27:16,570 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-16 00:27:16,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-16 00:27:16,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 00:27:16,571 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-16 00:27:17,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 00:27:17,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 00:27:17,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 00:27:17,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 00:27:17,058 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 00:27:17,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-16 00:27:17,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8c192e7/79d73aec30bb4dae8a2b0679db3df1b4/FLAGbccb9be10 [2020-09-16 00:27:17,754 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 00:27:17,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe025_tso.oepc.i [2020-09-16 00:27:17,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8c192e7/79d73aec30bb4dae8a2b0679db3df1b4/FLAGbccb9be10 [2020-09-16 00:27:17,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe8c192e7/79d73aec30bb4dae8a2b0679db3df1b4 [2020-09-16 00:27:17,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 00:27:17,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 00:27:17,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 00:27:17,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 00:27:17,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 00:27:17,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:27:17" (1/1) ... [2020-09-16 00:27:17,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e014f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:17, skipping insertion in model container [2020-09-16 00:27:17,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:27:17" (1/1) ... [2020-09-16 00:27:18,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 00:27:18,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 00:27:18,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:27:18,644 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 00:27:18,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 00:27:18,780 INFO L208 MainTranslator]: Completed translation [2020-09-16 00:27:18,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18 WrapperNode [2020-09-16 00:27:18,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 00:27:18,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 00:27:18,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 00:27:18,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 00:27:18,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 00:27:18,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 00:27:18,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 00:27:18,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 00:27:18,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (1/1) ... [2020-09-16 00:27:18,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 00:27:18,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 00:27:18,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 00:27:18,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 00:27:18,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (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 [2020-09-16 00:27:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 00:27:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 00:27:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 00:27:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 00:27:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 00:27:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 00:27:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 00:27:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 00:27:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 00:27:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 00:27:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 00:27:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 00:27:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 00:27:18,989 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 00:27:19,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 00:27:19,410 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 00:27:19,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:27:19 BoogieIcfgContainer [2020-09-16 00:27:19,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 00:27:19,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 00:27:19,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 00:27:19,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 00:27:19,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:27:17" (1/3) ... [2020-09-16 00:27:19,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20742e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:27:19, skipping insertion in model container [2020-09-16 00:27:19,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:27:18" (2/3) ... [2020-09-16 00:27:19,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20742e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:27:19, skipping insertion in model container [2020-09-16 00:27:19,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:27:19" (3/3) ... [2020-09-16 00:27:19,426 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_tso.oepc.i [2020-09-16 00:27:19,438 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 00:27:19,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-16 00:27:19,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 00:27:19,449 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 00:27:19,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,487 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,487 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,488 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,488 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,489 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,490 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,490 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,491 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,496 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,496 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,496 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,503 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,504 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,504 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,507 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,508 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,508 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,508 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 00:27:19,535 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 00:27:19,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 00:27:19,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 00:27:19,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-16 00:27:19,564 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-16 00:27:19,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 00:27:19,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 00:27:19,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 00:27:19,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 00:27:19,583 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-16 00:27:19,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:27:19,633 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:27:19,633 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:27:19,639 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:27:19,643 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-16 00:27:19,667 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-16 00:27:19,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 00:27:19,668 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 00:27:19,670 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 00:27:19,672 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-16 00:27:21,263 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-16 00:27:21,407 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-16 00:27:21,487 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-16 00:27:21,487 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-16 00:27:21,492 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-16 00:27:21,539 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 00:27:21,542 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 00:27:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 00:27:21,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:21,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:21,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:21,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-16 00:27:21,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:21,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372206718] [2020-09-16 00:27:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:21,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372206718] [2020-09-16 00:27:21,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:21,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:27:21,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [152775284] [2020-09-16 00:27:21,851 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:21,854 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:21,872 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-16 00:27:21,872 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:21,875 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:27:21,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:21,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:27:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:27:21,898 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 00:27:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:21,951 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-16 00:27:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:27:21,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 00:27:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:21,973 INFO L225 Difference]: With dead ends: 282 [2020-09-16 00:27:21,973 INFO L226 Difference]: Without dead ends: 218 [2020-09-16 00:27:21,975 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 [2020-09-16 00:27:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-16 00:27:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-16 00:27:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-16 00:27:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-16 00:27:22,052 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-16 00:27:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:22,053 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-16 00:27:22,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:27:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-16 00:27:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 00:27:22,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:22,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:22,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 00:27:22,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:22,056 INFO L82 PathProgramCache]: Analyzing trace with hash -225372059, now seen corresponding path program 1 times [2020-09-16 00:27:22,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:22,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967880264] [2020-09-16 00:27:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:22,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967880264] [2020-09-16 00:27:22,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:22,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:27:22,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1467203783] [2020-09-16 00:27:22,187 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:22,187 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:22,190 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-16 00:27:22,190 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:22,221 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:22,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:27:22,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:27:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:27:22,224 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-16 00:27:22,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:22,247 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-16 00:27:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:27:22,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 00:27:22,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:22,250 INFO L225 Difference]: With dead ends: 202 [2020-09-16 00:27:22,251 INFO L226 Difference]: Without dead ends: 202 [2020-09-16 00:27:22,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:27:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-16 00:27:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-16 00:27:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-16 00:27:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-16 00:27:22,270 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-16 00:27:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:22,271 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-16 00:27:22,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:27:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-16 00:27:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 00:27:22,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:22,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:22,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 00:27:22,273 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1603398907, now seen corresponding path program 1 times [2020-09-16 00:27:22,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:22,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413134152] [2020-09-16 00:27:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:22,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413134152] [2020-09-16 00:27:22,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 00:27:22,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [514225530] [2020-09-16 00:27:22,380 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:22,382 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:22,386 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-16 00:27:22,386 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:22,426 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:22,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 00:27:22,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:22,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 00:27:22,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:27:22,428 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-16 00:27:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:22,435 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-09-16 00:27:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 00:27:22,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 00:27:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:22,438 INFO L225 Difference]: With dead ends: 194 [2020-09-16 00:27:22,438 INFO L226 Difference]: Without dead ends: 194 [2020-09-16 00:27:22,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 00:27:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-16 00:27:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-09-16 00:27:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-16 00:27:22,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-09-16 00:27:22,453 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-09-16 00:27:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:22,453 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-09-16 00:27:22,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 00:27:22,454 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-09-16 00:27:22,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 00:27:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:22,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:22,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 00:27:22,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1834242640, now seen corresponding path program 1 times [2020-09-16 00:27:22,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:22,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523160711] [2020-09-16 00:27:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:22,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523160711] [2020-09-16 00:27:22,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:22,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:27:22,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1106052878] [2020-09-16 00:27:22,569 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:22,570 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:22,573 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-16 00:27:22,573 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:22,632 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:27:22,681 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:27:22,707 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-16 00:27:22,728 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2596#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-16 00:27:22,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 00:27:22,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 00:27:22,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:27:22,729 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 5 states. [2020-09-16 00:27:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:22,815 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-16 00:27:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:27:22,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-16 00:27:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:22,817 INFO L225 Difference]: With dead ends: 187 [2020-09-16 00:27:22,817 INFO L226 Difference]: Without dead ends: 123 [2020-09-16 00:27:22,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:27:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-16 00:27:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-16 00:27:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-16 00:27:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-16 00:27:22,825 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 11 [2020-09-16 00:27:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:22,825 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-16 00:27:22,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 00:27:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-16 00:27:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 00:27:22,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:22,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:22,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 00:27:22,828 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1911316559, now seen corresponding path program 1 times [2020-09-16 00:27:22,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:22,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850883144] [2020-09-16 00:27:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:22,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850883144] [2020-09-16 00:27:22,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:22,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 00:27:22,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1169341216] [2020-09-16 00:27:22,931 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:22,933 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:22,937 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-16 00:27:22,938 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:23,008 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:23,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 00:27:23,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:23,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 00:27:23,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 00:27:23,009 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 6 states. [2020-09-16 00:27:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:23,072 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-09-16 00:27:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-16 00:27:23,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-16 00:27:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:23,074 INFO L225 Difference]: With dead ends: 118 [2020-09-16 00:27:23,074 INFO L226 Difference]: Without dead ends: 108 [2020-09-16 00:27:23,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 00:27:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-16 00:27:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-09-16 00:27:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-16 00:27:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-09-16 00:27:23,080 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-09-16 00:27:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:23,081 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-09-16 00:27:23,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 00:27:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-09-16 00:27:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:27:23,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:23,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:23,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 00:27:23,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:23,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1074918836, now seen corresponding path program 1 times [2020-09-16 00:27:23,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:23,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-16 00:27:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:23,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963873301] [2020-09-16 00:27:23,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:23,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:27:23,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [478601368] [2020-09-16 00:27:23,151 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:23,153 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:23,159 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-09-16 00:27:23,160 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:23,306 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:23,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:27:23,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:27:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:27:23,307 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-09-16 00:27:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:23,339 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-09-16 00:27:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:27:23,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:27:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:23,341 INFO L225 Difference]: With dead ends: 133 [2020-09-16 00:27:23,341 INFO L226 Difference]: Without dead ends: 54 [2020-09-16 00:27:23,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:27:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-16 00:27:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-16 00:27:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-16 00:27:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-09-16 00:27:23,346 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-09-16 00:27:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:23,346 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-09-16 00:27:23,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:27:23,346 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-09-16 00:27:23,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:27:23,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:23,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:23,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 00:27:23,351 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:23,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:23,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 2 times [2020-09-16 00:27:23,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:23,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076487604] [2020-09-16 00:27:23,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:23,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076487604] [2020-09-16 00:27:23,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:23,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:27:23,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [306442308] [2020-09-16 00:27:23,437 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:23,441 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:23,445 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-16 00:27:23,446 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:23,480 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:23,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:27:23,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:23,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:27:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:27:23,482 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-09-16 00:27:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:23,504 INFO L93 Difference]: Finished difference Result 63 states and 111 transitions. [2020-09-16 00:27:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:27:23,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:27:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:23,505 INFO L225 Difference]: With dead ends: 63 [2020-09-16 00:27:23,506 INFO L226 Difference]: Without dead ends: 38 [2020-09-16 00:27:23,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:27:23,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-16 00:27:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-16 00:27:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-16 00:27:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-16 00:27:23,509 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 17 [2020-09-16 00:27:23,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:23,510 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-16 00:27:23,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:27:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-16 00:27:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:27:23,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:23,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:23,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 00:27:23,512 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1965606506, now seen corresponding path program 3 times [2020-09-16 00:27:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:23,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069122477] [2020-09-16 00:27:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:23,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069122477] [2020-09-16 00:27:23,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:23,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 00:27:23,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [275117170] [2020-09-16 00:27:23,620 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:23,622 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:23,625 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-16 00:27:23,626 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:23,638 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:23,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:27:23,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:23,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:27:23,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:27:23,639 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-16 00:27:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:23,663 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-16 00:27:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 00:27:23,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:27:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:23,664 INFO L225 Difference]: With dead ends: 56 [2020-09-16 00:27:23,664 INFO L226 Difference]: Without dead ends: 35 [2020-09-16 00:27:23,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:27:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-16 00:27:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-16 00:27:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-16 00:27:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-16 00:27:23,669 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-16 00:27:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:23,670 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-16 00:27:23,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:27:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-16 00:27:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 00:27:23,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 00:27:23,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 00:27:23,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 00:27:23,672 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 00:27:23,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 00:27:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash -828702424, now seen corresponding path program 4 times [2020-09-16 00:27:23,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 00:27:23,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216805571] [2020-09-16 00:27:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 00:27:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 00:27:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 00:27:23,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216805571] [2020-09-16 00:27:23,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 00:27:23,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 00:27:23,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [959142066] [2020-09-16 00:27:23,753 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-16 00:27:23,756 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-16 00:27:23,762 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 23 transitions. [2020-09-16 00:27:23,762 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-16 00:27:23,768 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-16 00:27:23,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 00:27:23,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 00:27:23,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 00:27:23,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 00:27:23,770 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-16 00:27:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 00:27:23,787 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-16 00:27:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 00:27:23,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-16 00:27:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 00:27:23,788 INFO L225 Difference]: With dead ends: 34 [2020-09-16 00:27:23,788 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 00:27:23,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 00:27:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 00:27:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 00:27:23,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 00:27:23,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 00:27:23,790 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 00:27:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 00:27:23,791 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 00:27:23,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 00:27:23,791 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 00:27:23,791 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 00:27:23,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 00:27:23,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:27:23 BasicIcfg [2020-09-16 00:27:23,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 00:27:23,799 INFO L168 Benchmark]: Toolchain (without parser) took 5815.33 ms. Allocated memory was 147.3 MB in the beginning and 245.4 MB in the end (delta: 98.0 MB). Free memory was 102.1 MB in the beginning and 101.2 MB in the end (delta: 853.1 kB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,800 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-16 00:27:23,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.86 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 163.3 MB in the end (delta: -61.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.50 ms. Allocated memory is still 205.5 MB. Free memory was 163.3 MB in the beginning and 161.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,808 INFO L168 Benchmark]: Boogie Preprocessor took 33.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.1 MB in the beginning and 159.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,809 INFO L168 Benchmark]: RCFGBuilder took 531.70 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 137.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,812 INFO L168 Benchmark]: TraceAbstraction took 4379.57 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 136.9 MB in the beginning and 101.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2020-09-16 00:27:23,824 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 792.86 ms. Allocated memory was 147.3 MB in the beginning and 205.5 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 163.3 MB in the end (delta: -61.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 68.50 ms. Allocated memory is still 205.5 MB. Free memory was 163.3 MB in the beginning and 161.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.76 ms. Allocated memory is still 205.5 MB. Free memory was 161.1 MB in the beginning and 159.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 531.70 ms. Allocated memory is still 205.5 MB. Free memory was 159.1 MB in the beginning and 137.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4379.57 ms. Allocated memory was 205.5 MB in the beginning and 245.4 MB in the end (delta: 39.8 MB). Free memory was 136.9 MB in the beginning and 101.2 MB in the end (delta: 35.7 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 661 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 186 SDtfs, 119 SDslu, 218 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 3869 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...