/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/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 22:42:12,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 22:42:12,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 22:42:12,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 22:42:12,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 22:42:12,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 22:42:12,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 22:42:12,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 22:42:12,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 22:42:12,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 22:42:12,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 22:42:12,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 22:42:12,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 22:42:12,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 22:42:12,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 22:42:12,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 22:42:12,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 22:42:12,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 22:42:12,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 22:42:12,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 22:42:12,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 22:42:12,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 22:42:12,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 22:42:12,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 22:42:12,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 22:42:12,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 22:42:12,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 22:42:12,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 22:42:12,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 22:42:12,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 22:42:12,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 22:42:12,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 22:42:12,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 22:42:12,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 22:42:12,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 22:42:12,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 22:42:12,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 22:42:12,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 22:42:12,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 22:42:12,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 22:42:12,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 22:42:12,426 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 [2020-09-15 22:42:12,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 22:42:12,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 22:42:12,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 22:42:12,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 22:42:12,454 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 22:42:12,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 22:42:12,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 22:42:12,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 22:42:12,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 22:42:12,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 22:42:12,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 22:42:12,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 22:42:12,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 22:42:12,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 22:42:12,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 22:42:12,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 22:42:12,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 22:42:12,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 22:42:12,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 22:42:12,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 22:42:12,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 22:42:12,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 22:42:12,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 22:42:12,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 22:42:12,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 22:42:12,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 22:42:12,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 22:42:12,459 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 22:42:12,459 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 22:42:12,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 22:42:12,459 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 22:42:12,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 22:42:12,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 22:42:12,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 22:42:12,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 22:42:12,956 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 22:42:12,957 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-15 22:42:13,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab37a0e7e/beb31931f0814e3a8f3897bee8c9dc9f/FLAG074becb23 [2020-09-15 22:42:13,679 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 22:42:13,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-09-15 22:42:13,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab37a0e7e/beb31931f0814e3a8f3897bee8c9dc9f/FLAG074becb23 [2020-09-15 22:42:13,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab37a0e7e/beb31931f0814e3a8f3897bee8c9dc9f [2020-09-15 22:42:13,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 22:42:13,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 22:42:13,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 22:42:13,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 22:42:13,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 22:42:13,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:42:13" (1/1) ... [2020-09-15 22:42:13,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a48385a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:13, skipping insertion in model container [2020-09-15 22:42:13,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 10:42:13" (1/1) ... [2020-09-15 22:42:13,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 22:42:14,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 22:42:14,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 22:42:14,607 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 22:42:14,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 22:42:14,781 INFO L208 MainTranslator]: Completed translation [2020-09-15 22:42:14,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14 WrapperNode [2020-09-15 22:42:14,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 22:42:14,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 22:42:14,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 22:42:14,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 22:42:14,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 22:42:14,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 22:42:14,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 22:42:14,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 22:42:14,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (1/1) ... [2020-09-15 22:42:14,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 22:42:14,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 22:42:14,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 22:42:14,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 22:42:14,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (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 [2020-09-15 22:42:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 22:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 22:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 22:42:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 22:42:14,959 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 22:42:14,959 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 22:42:14,960 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 22:42:14,960 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 22:42:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 22:42:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 22:42:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 22:42:14,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 22:42:14,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 22:42:14,964 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 22:42:15,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 22:42:15,343 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 22:42:15,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:42:15 BoogieIcfgContainer [2020-09-15 22:42:15,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 22:42:15,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 22:42:15,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 22:42:15,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 22:42:15,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 10:42:13" (1/3) ... [2020-09-15 22:42:15,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b41fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:42:15, skipping insertion in model container [2020-09-15 22:42:15,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 10:42:14" (2/3) ... [2020-09-15 22:42:15,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4b41fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 10:42:15, skipping insertion in model container [2020-09-15 22:42:15,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 10:42:15" (3/3) ... [2020-09-15 22:42:15,358 INFO L109 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-09-15 22:42:15,370 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 22:42:15,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 22:42:15,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 22:42:15,382 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 22:42:15,411 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,412 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,412 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,412 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,414 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,414 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,414 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,414 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,415 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,416 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,416 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,416 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,417 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,423 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,423 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,438 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 22:42:15,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 22:42:15,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 22:42:15,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 22:42:15,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 22:42:15,494 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 22:42:15,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 22:42:15,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 22:42:15,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 22:42:15,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 22:42:15,512 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-15 22:42:15,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-15 22:42:15,570 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-15 22:42:15,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 22:42:15,581 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 54 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. [2020-09-15 22:42:15,585 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-15 22:42:15,627 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-15 22:42:15,627 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 22:42:15,628 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 54 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. [2020-09-15 22:42:15,631 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-15 22:42:15,635 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 22:42:17,082 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-15 22:42:17,254 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2483 [2020-09-15 22:42:17,255 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-09-15 22:42:17,260 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-15 22:42:17,290 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-15 22:42:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-15 22:42:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 22:42:17,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:17,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:17,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:17,312 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-09-15 22:42:17,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:17,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896088064] [2020-09-15 22:42:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:17,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896088064] [2020-09-15 22:42:17,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:17,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 22:42:17,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [609582885] [2020-09-15 22:42:17,586 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:17,589 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:17,604 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 22:42:17,604 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:17,607 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:17,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 22:42:17,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:17,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 22:42:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:17,628 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-15 22:42:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:17,688 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-15 22:42:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 22:42:17,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 22:42:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:17,709 INFO L225 Difference]: With dead ends: 290 [2020-09-15 22:42:17,709 INFO L226 Difference]: Without dead ends: 226 [2020-09-15 22:42:17,711 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 [2020-09-15 22:42:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-15 22:42:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-15 22:42:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-15 22:42:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-15 22:42:17,786 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-15 22:42:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:17,788 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-15 22:42:17,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 22:42:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-15 22:42:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 22:42:17,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:17,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:17,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 22:42:17,790 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash 956609449, now seen corresponding path program 1 times [2020-09-15 22:42:17,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:17,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509295880] [2020-09-15 22:42:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:17,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509295880] [2020-09-15 22:42:17,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:17,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 22:42:17,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1486416505] [2020-09-15 22:42:17,944 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:17,945 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:17,949 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-15 22:42:17,950 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:17,992 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:17,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 22:42:17,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:17,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 22:42:17,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:17,997 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-15 22:42:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:18,020 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-09-15 22:42:18,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 22:42:18,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-15 22:42:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:18,029 INFO L225 Difference]: With dead ends: 212 [2020-09-15 22:42:18,029 INFO L226 Difference]: Without dead ends: 212 [2020-09-15 22:42:18,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:18,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-15 22:42:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-09-15 22:42:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-15 22:42:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-09-15 22:42:18,070 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-09-15 22:42:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:18,071 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-09-15 22:42:18,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 22:42:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-09-15 22:42:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 22:42:18,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:18,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:18,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 22:42:18,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash -409878926, now seen corresponding path program 1 times [2020-09-15 22:42:18,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:18,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126774044] [2020-09-15 22:42:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:18,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126774044] [2020-09-15 22:42:18,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:18,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 22:42:18,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [168571461] [2020-09-15 22:42:18,184 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:18,185 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:18,187 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-09-15 22:42:18,188 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:18,220 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:18,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 22:42:18,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 22:42:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 22:42:18,222 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-09-15 22:42:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:18,257 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-15 22:42:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 22:42:18,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 22:42:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:18,261 INFO L225 Difference]: With dead ends: 242 [2020-09-15 22:42:18,261 INFO L226 Difference]: Without dead ends: 146 [2020-09-15 22:42:18,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 22:42:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-15 22:42:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-15 22:42:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-15 22:42:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-09-15 22:42:18,272 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-09-15 22:42:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:18,272 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-09-15 22:42:18,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 22:42:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-09-15 22:42:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 22:42:18,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:18,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:18,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 22:42:18,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-09-15 22:42:18,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:18,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261161997] [2020-09-15 22:42:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:18,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261161997] [2020-09-15 22:42:18,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:18,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 22:42:18,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843058261] [2020-09-15 22:42:18,354 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:18,357 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:18,359 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-15 22:42:18,359 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:18,392 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:18,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 22:42:18,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:18,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 22:42:18,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:18,393 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-09-15 22:42:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:18,401 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-09-15 22:42:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 22:42:18,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-15 22:42:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:18,403 INFO L225 Difference]: With dead ends: 140 [2020-09-15 22:42:18,403 INFO L226 Difference]: Without dead ends: 140 [2020-09-15 22:42:18,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-15 22:42:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-09-15 22:42:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-15 22:42:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-09-15 22:42:18,412 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-09-15 22:42:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:18,413 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-09-15 22:42:18,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 22:42:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-09-15 22:42:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 22:42:18,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:18,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:18,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 22:42:18,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:18,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1352113053, now seen corresponding path program 1 times [2020-09-15 22:42:18,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:18,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111207533] [2020-09-15 22:42:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:18,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111207533] [2020-09-15 22:42:18,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:18,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 22:42:18,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [521327501] [2020-09-15 22:42:18,489 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:18,493 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:18,497 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 47 transitions. [2020-09-15 22:42:18,498 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:18,590 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:18,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 22:42:18,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 22:42:18,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 22:42:18,605 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-09-15 22:42:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:18,647 INFO L93 Difference]: Finished difference Result 200 states and 485 transitions. [2020-09-15 22:42:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 22:42:18,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 22:42:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:18,649 INFO L225 Difference]: With dead ends: 200 [2020-09-15 22:42:18,649 INFO L226 Difference]: Without dead ends: 110 [2020-09-15 22:42:18,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 22:42:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-15 22:42:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-15 22:42:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-15 22:42:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-15 22:42:18,656 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 12 [2020-09-15 22:42:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:18,656 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-15 22:42:18,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 22:42:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-15 22:42:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 22:42:18,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:18,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:18,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 22:42:18,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:18,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:18,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2097233879, now seen corresponding path program 2 times [2020-09-15 22:42:18,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:18,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349207994] [2020-09-15 22:42:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:18,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349207994] [2020-09-15 22:42:18,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:18,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 22:42:18,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1805672354] [2020-09-15 22:42:18,715 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:18,716 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:18,720 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-15 22:42:18,720 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:18,777 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:18,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 22:42:18,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:18,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 22:42:18,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 22:42:18,778 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 4 states. [2020-09-15 22:42:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:18,810 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-09-15 22:42:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 22:42:18,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 22:42:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:18,811 INFO L225 Difference]: With dead ends: 128 [2020-09-15 22:42:18,812 INFO L226 Difference]: Without dead ends: 68 [2020-09-15 22:42:18,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 22:42:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-15 22:42:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-15 22:42:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-15 22:42:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-09-15 22:42:18,818 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-09-15 22:42:18,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:18,818 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-09-15 22:42:18,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 22:42:18,818 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-09-15 22:42:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 22:42:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:18,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:18,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 22:42:18,820 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-09-15 22:42:18,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:18,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314792785] [2020-09-15 22:42:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:18,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314792785] [2020-09-15 22:42:18,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:18,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 22:42:18,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1141265252] [2020-09-15 22:42:18,909 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:18,911 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:18,914 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-15 22:42:18,914 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:18,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:18,990 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:19,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:19,028 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:19,044 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:19,052 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3724#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 22:42:19,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 22:42:19,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:19,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 22:42:19,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 22:42:19,054 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-09-15 22:42:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:19,118 INFO L93 Difference]: Finished difference Result 67 states and 126 transitions. [2020-09-15 22:42:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 22:42:19,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-15 22:42:19,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:19,120 INFO L225 Difference]: With dead ends: 67 [2020-09-15 22:42:19,120 INFO L226 Difference]: Without dead ends: 45 [2020-09-15 22:42:19,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 22:42:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-15 22:42:19,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-15 22:42:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-15 22:42:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-09-15 22:42:19,123 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 13 [2020-09-15 22:42:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:19,124 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-09-15 22:42:19,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 22:42:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-09-15 22:42:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 22:42:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:19,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:19,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 22:42:19,126 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-09-15 22:42:19,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:19,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824567068] [2020-09-15 22:42:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:19,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824567068] [2020-09-15 22:42:19,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:19,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 22:42:19,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1586247167] [2020-09-15 22:42:19,248 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:19,250 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:19,253 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-15 22:42:19,254 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:19,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 22:42:19,306 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3892#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 22:42:19,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 22:42:19,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 22:42:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 22:42:19,307 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 7 states. [2020-09-15 22:42:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:19,361 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-09-15 22:42:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 22:42:19,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-15 22:42:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:19,362 INFO L225 Difference]: With dead ends: 42 [2020-09-15 22:42:19,362 INFO L226 Difference]: Without dead ends: 36 [2020-09-15 22:42:19,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-15 22:42:19,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-15 22:42:19,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-15 22:42:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-15 22:42:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-09-15 22:42:19,364 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-09-15 22:42:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:19,365 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-09-15 22:42:19,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 22:42:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-09-15 22:42:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 22:42:19,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 22:42:19,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 22:42:19,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 22:42:19,367 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 22:42:19,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 22:42:19,367 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-09-15 22:42:19,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 22:42:19,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277312274] [2020-09-15 22:42:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 22:42:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 22:42:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 22:42:19,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277312274] [2020-09-15 22:42:19,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 22:42:19,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 22:42:19,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [793151821] [2020-09-15 22:42:19,414 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 22:42:19,416 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 22:42:19,422 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-09-15 22:42:19,422 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 22:42:19,426 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 22:42:19,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 22:42:19,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 22:42:19,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 22:42:19,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:19,427 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-09-15 22:42:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 22:42:19,432 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-09-15 22:42:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 22:42:19,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-15 22:42:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 22:42:19,433 INFO L225 Difference]: With dead ends: 35 [2020-09-15 22:42:19,434 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 22:42:19,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 22:42:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 22:42:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 22:42:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 22:42:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 22:42:19,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-15 22:42:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 22:42:19,435 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 22:42:19,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 22:42:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 22:42:19,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 22:42:19,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 22:42:19,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 10:42:19 BasicIcfg [2020-09-15 22:42:19,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 22:42:19,444 INFO L168 Benchmark]: Toolchain (without parser) took 5483.23 ms. Allocated memory was 147.3 MB in the beginning and 246.9 MB in the end (delta: 99.6 MB). Free memory was 100.8 MB in the beginning and 117.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,444 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-15 22:42:19,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.38 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 162.8 MB in the end (delta: -62.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,446 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 205.0 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,447 INFO L168 Benchmark]: Boogie Preprocessor took 31.75 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,448 INFO L168 Benchmark]: RCFGBuilder took 479.02 ms. Allocated memory is still 205.0 MB. Free memory was 158.9 MB in the beginning and 137.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,449 INFO L168 Benchmark]: TraceAbstraction took 4091.05 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 136.4 MB in the beginning and 117.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-09-15 22:42:19,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.38 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.4 MB in the beginning and 162.8 MB in the end (delta: -62.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.72 ms. Allocated memory is still 205.0 MB. Free memory was 162.2 MB in the beginning and 160.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.75 ms. Allocated memory is still 205.0 MB. Free memory was 160.2 MB in the beginning and 158.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.02 ms. Allocated memory is still 205.0 MB. Free memory was 158.9 MB in the beginning and 137.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4091.05 ms. Allocated memory was 205.0 MB in the beginning and 246.9 MB in the end (delta: 41.9 MB). Free memory was 136.4 MB in the beginning and 117.1 MB in the end (delta: 19.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 656 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2483 CheckedPairsTotal, 57 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: 3.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 158 SDtfs, 102 SDslu, 167 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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, 0.5s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...