/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/safe014_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:42:04,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:42:04,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:42:04,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:42:04,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:42:04,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:42:04,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:42:04,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:42:04,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:42:04,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:42:04,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:42:04,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:42:04,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:42:04,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:42:04,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:42:04,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:42:04,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:42:04,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:42:04,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:42:04,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:42:04,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:42:04,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:42:04,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:42:04,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:42:04,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:42:04,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:42:04,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:42:04,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:42:04,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:42:04,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:42:04,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:42:04,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:42:04,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:42:04,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:42:04,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:42:04,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:42:04,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:42:04,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:42:04,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:42:04,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:42:04,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:42:04,361 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 [2020-09-11 23:42:04,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:42:04,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:42:04,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:42:04,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:42:04,420 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:42:04,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:42:04,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:42:04,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:42:04,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:42:04,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:42:04,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:42:04,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:42:04,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:42:04,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:42:04,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:42:04,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:42:04,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:42:04,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:42:04,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:42:04,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:42:04,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:42:04,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:42:04,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:42:04,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:42:04,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:42:04,429 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:42:04,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:42:04,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:42:04,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:42:04,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:42:04,914 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:42:04,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-11 23:42:05,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195794e13/bb41de034b604f71974e60edb9360549/FLAGd2b681b55 [2020-09-11 23:42:05,647 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:42:05,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe014_tso.oepc.i [2020-09-11 23:42:05,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195794e13/bb41de034b604f71974e60edb9360549/FLAGd2b681b55 [2020-09-11 23:42:05,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195794e13/bb41de034b604f71974e60edb9360549 [2020-09-11 23:42:05,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:42:05,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:42:05,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:42:05,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:42:05,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:42:05,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:42:05" (1/1) ... [2020-09-11 23:42:05,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:05, skipping insertion in model container [2020-09-11 23:42:05,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:42:05" (1/1) ... [2020-09-11 23:42:05,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:42:06,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:42:06,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:42:06,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:42:06,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:42:06,805 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:42:06,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06 WrapperNode [2020-09-11 23:42:06,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:42:06,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:42:06,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:42:06,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:42:06,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:42:06,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:42:06,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:42:06,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:42:06,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (1/1) ... [2020-09-11 23:42:06,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:42:06,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:42:06,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:42:06,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:42:06,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (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 [2020-09-11 23:42:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:42:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:42:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:42:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:42:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:42:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:42:07,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:42:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:42:07,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:42:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:42:07,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:42:07,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:42:07,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:42:07,023 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:42:07,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:42:07,451 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:42:07,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:42:07 BoogieIcfgContainer [2020-09-11 23:42:07,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:42:07,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:42:07,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:42:07,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:42:07,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:42:05" (1/3) ... [2020-09-11 23:42:07,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a04448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:42:07, skipping insertion in model container [2020-09-11 23:42:07,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:42:06" (2/3) ... [2020-09-11 23:42:07,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a04448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:42:07, skipping insertion in model container [2020-09-11 23:42:07,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:42:07" (3/3) ... [2020-09-11 23:42:07,466 INFO L109 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2020-09-11 23:42:07,478 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:42:07,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:42:07,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:42:07,490 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:42:07,517 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,518 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,518 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,518 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,519 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,520 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,520 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,520 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,521 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,522 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,522 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,523 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,528 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,528 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,544 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,545 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,545 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:42:07,566 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:42:07,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:42:07,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:42:07,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:42:07,590 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:42:07,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:42:07,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:42:07,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:42:07,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:42:07,609 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:07,611 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:07,660 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:42:07,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:42:07,667 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:42:07,670 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 23:42:07,697 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 23:42:07,698 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:42:07,701 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:42:07,704 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:42:07,707 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:42:09,050 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-11 23:42:09,228 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-09-11 23:42:09,272 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-09-11 23:42:09,273 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 23:42:09,277 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:42:09,306 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:42:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:42:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:42:09,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:09,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:09,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:09,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-09-11 23:42:09,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:09,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087721555] [2020-09-11 23:42:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:09,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087721555] [2020-09-11 23:42:09,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:09,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:42:09,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [152775284] [2020-09-11 23:42:09,616 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:09,619 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:09,638 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:42:09,638 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:09,641 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:09,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:09,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:09,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:09,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:09,663 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:42:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:09,703 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:42:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:09,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:42:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:09,725 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:42:09,726 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:42:09,728 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 [2020-09-11 23:42:09,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:42:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:42:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:42:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:42:09,844 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:42:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:09,846 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:42:09,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:42:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:42:09,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:09,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:09,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:42:09,848 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1035713695, now seen corresponding path program 1 times [2020-09-11 23:42:09,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:09,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967880264] [2020-09-11 23:42:09,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:09,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967880264] [2020-09-11 23:42:09,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:09,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:09,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [185023322] [2020-09-11 23:42:09,940 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:09,941 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:09,943 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-11 23:42:09,943 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,004 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:10,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:10,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:10,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:10,007 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-09-11 23:42:10,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,033 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-09-11 23:42:10,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:10,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 23:42:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,035 INFO L225 Difference]: With dead ends: 242 [2020-09-11 23:42:10,035 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:42:10,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:42:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-09-11 23:42:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-11 23:42:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 284 transitions. [2020-09-11 23:42:10,044 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 284 transitions. Word has length 9 [2020-09-11 23:42:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,045 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 284 transitions. [2020-09-11 23:42:10,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 284 transitions. [2020-09-11 23:42:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:42:10,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:42:10,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1517475135, now seen corresponding path program 1 times [2020-09-11 23:42:10,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705380267] [2020-09-11 23:42:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:10,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:10,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705380267] [2020-09-11 23:42:10,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:10,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:42:10,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [600445519] [2020-09-11 23:42:10,133 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:10,134 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:10,137 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 17 transitions. [2020-09-11 23:42:10,137 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,143 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:10,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:10,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:10,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:10,144 INFO L87 Difference]: Start difference. First operand 116 states and 284 transitions. Second operand 3 states. [2020-09-11 23:42:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,157 INFO L93 Difference]: Finished difference Result 110 states and 265 transitions. [2020-09-11 23:42:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:10,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:42:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,160 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:42:10,160 INFO L226 Difference]: Without dead ends: 110 [2020-09-11 23:42:10,160 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 [2020-09-11 23:42:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-11 23:42:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-11 23:42:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-11 23:42:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-09-11 23:42:10,168 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 11 [2020-09-11 23:42:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,168 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-09-11 23:42:10,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-09-11 23:42:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:42:10,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:42:10,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash -142823170, now seen corresponding path program 1 times [2020-09-11 23:42:10,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451898391] [2020-09-11 23:42:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:10,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451898391] [2020-09-11 23:42:10,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:10,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:10,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [226082700] [2020-09-11 23:42:10,242 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:10,244 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:10,246 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 24 transitions. [2020-09-11 23:42:10,246 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,263 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:10,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:42:10,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:42:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:42:10,264 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 3 states. [2020-09-11 23:42:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,280 INFO L93 Difference]: Finished difference Result 104 states and 246 transitions. [2020-09-11 23:42:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:42:10,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 23:42:10,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,282 INFO L225 Difference]: With dead ends: 104 [2020-09-11 23:42:10,282 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:42:10,283 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 [2020-09-11 23:42:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:42:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:42:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:42:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-09-11 23:42:10,289 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 12 [2020-09-11 23:42:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,289 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-09-11 23:42:10,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:42:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-09-11 23:42:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:42:10,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:42:10,291 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,292 INFO L82 PathProgramCache]: Analyzing trace with hash -132602240, now seen corresponding path program 1 times [2020-09-11 23:42:10,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745844226] [2020-09-11 23:42:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:10,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745844226] [2020-09-11 23:42:10,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:10,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:10,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1704893555] [2020-09-11 23:42:10,373 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:10,376 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:10,380 INFO L274 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-09-11 23:42:10,380 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,435 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:10,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:10,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:10,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:10,436 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-09-11 23:42:10,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,461 INFO L93 Difference]: Finished difference Result 158 states and 375 transitions. [2020-09-11 23:42:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:10,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:42:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,463 INFO L225 Difference]: With dead ends: 158 [2020-09-11 23:42:10,463 INFO L226 Difference]: Without dead ends: 104 [2020-09-11 23:42:10,464 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 [2020-09-11 23:42:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-11 23:42:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-11 23:42:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-11 23:42:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 244 transitions. [2020-09-11 23:42:10,469 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 244 transitions. Word has length 13 [2020-09-11 23:42:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,470 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 244 transitions. [2020-09-11 23:42:10,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 244 transitions. [2020-09-11 23:42:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 23:42:10,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:42:10,471 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 2 times [2020-09-11 23:42:10,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521172863] [2020-09-11 23:42:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:10,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521172863] [2020-09-11 23:42:10,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:10,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:10,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [675561522] [2020-09-11 23:42:10,550 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:10,551 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:10,554 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-09-11 23:42:10,554 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,596 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:42:10,624 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:10,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:10,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:10,625 INFO L87 Difference]: Start difference. First operand 104 states and 244 transitions. Second operand 4 states. [2020-09-11 23:42:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,658 INFO L93 Difference]: Finished difference Result 127 states and 275 transitions. [2020-09-11 23:42:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:10,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 23:42:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,659 INFO L225 Difference]: With dead ends: 127 [2020-09-11 23:42:10,659 INFO L226 Difference]: Without dead ends: 87 [2020-09-11 23:42:10,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-11 23:42:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-09-11 23:42:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-11 23:42:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 183 transitions. [2020-09-11 23:42:10,664 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 183 transitions. Word has length 13 [2020-09-11 23:42:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,664 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 183 transitions. [2020-09-11 23:42:10,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 183 transitions. [2020-09-11 23:42:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:42:10,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:42:10,666 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-09-11 23:42:10,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352455322] [2020-09-11 23:42:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:10,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352455322] [2020-09-11 23:42:10,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:10,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:10,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1601581615] [2020-09-11 23:42:10,796 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:10,799 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:10,803 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-09-11 23:42:10,803 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:10,903 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3211#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:42:10,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 23:42:10,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:10,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 23:42:10,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 23:42:10,904 INFO L87 Difference]: Start difference. First operand 87 states and 183 transitions. Second operand 6 states. [2020-09-11 23:42:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:10,959 INFO L93 Difference]: Finished difference Result 90 states and 175 transitions. [2020-09-11 23:42:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 23:42:10,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-11 23:42:10,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:10,960 INFO L225 Difference]: With dead ends: 90 [2020-09-11 23:42:10,960 INFO L226 Difference]: Without dead ends: 65 [2020-09-11 23:42:10,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:42:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-11 23:42:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-11 23:42:10,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-11 23:42:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 119 transitions. [2020-09-11 23:42:10,963 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 119 transitions. Word has length 14 [2020-09-11 23:42:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:10,964 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 119 transitions. [2020-09-11 23:42:10,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 23:42:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 119 transitions. [2020-09-11 23:42:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:42:10,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:10,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:10,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:42:10,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:10,966 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-09-11 23:42:10,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:10,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101479698] [2020-09-11 23:42:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:11,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101479698] [2020-09-11 23:42:11,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:11,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:42:11,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1313565352] [2020-09-11 23:42:11,044 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:11,046 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:11,050 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-09-11 23:42:11,050 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:11,060 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:42:11,113 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3440#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:42:11,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-11 23:42:11,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:11,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-11 23:42:11,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:42:11,114 INFO L87 Difference]: Start difference. First operand 65 states and 119 transitions. Second operand 7 states. [2020-09-11 23:42:11,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:11,170 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2020-09-11 23:42:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:42:11,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-09-11 23:42:11,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:11,171 INFO L225 Difference]: With dead ends: 62 [2020-09-11 23:42:11,172 INFO L226 Difference]: Without dead ends: 54 [2020-09-11 23:42:11,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-11 23:42:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-11 23:42:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-11 23:42:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-11 23:42:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-09-11 23:42:11,175 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-09-11 23:42:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:11,175 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-09-11 23:42:11,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-11 23:42:11,175 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-09-11 23:42:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:11,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:11,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:11,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:42:11,176 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-09-11 23:42:11,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:11,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040023651] [2020-09-11 23:42:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:11,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040023651] [2020-09-11 23:42:11,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:11,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:11,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [893395558] [2020-09-11 23:42:11,230 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:11,232 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:11,237 INFO L274 McrAutomatonBuilder]: Finished intersection with 30 states and 41 transitions. [2020-09-11 23:42:11,238 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:11,270 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:11,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:11,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:11,272 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-09-11 23:42:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:11,290 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-09-11 23:42:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:11,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:11,291 INFO L225 Difference]: With dead ends: 63 [2020-09-11 23:42:11,292 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:42:11,292 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 [2020-09-11 23:42:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:42:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:42:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:42:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:42:11,294 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:42:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:11,294 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:42:11,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:42:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:11,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:11,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:11,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:42:11,295 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:11,296 INFO L82 PathProgramCache]: Analyzing trace with hash 361560856, now seen corresponding path program 2 times [2020-09-11 23:42:11,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:11,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947272376] [2020-09-11 23:42:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:11,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947272376] [2020-09-11 23:42:11,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:11,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:42:11,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [908614987] [2020-09-11 23:42:11,346 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:11,348 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:11,352 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 34 transitions. [2020-09-11 23:42:11,353 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:11,396 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:11,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:11,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:11,398 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:42:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:11,414 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-09-11 23:42:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:42:11,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:11,415 INFO L225 Difference]: With dead ends: 48 [2020-09-11 23:42:11,415 INFO L226 Difference]: Without dead ends: 30 [2020-09-11 23:42:11,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:42:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-11 23:42:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-11 23:42:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-11 23:42:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-09-11 23:42:11,417 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-09-11 23:42:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:11,418 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-09-11 23:42:11,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-09-11 23:42:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:42:11,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:42:11,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:42:11,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:42:11,419 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:42:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:42:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash -550831814, now seen corresponding path program 3 times [2020-09-11 23:42:11,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:42:11,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671660115] [2020-09-11 23:42:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:42:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:42:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:42:11,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671660115] [2020-09-11 23:42:11,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:42:11,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:42:11,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1154403215] [2020-09-11 23:42:11,475 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:42:11,477 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:42:11,480 INFO L274 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-09-11 23:42:11,481 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:42:11,494 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:42:11,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:42:11,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:42:11,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:42:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:42:11,495 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-09-11 23:42:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:42:11,510 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-09-11 23:42:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:42:11,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:42:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:42:11,511 INFO L225 Difference]: With dead ends: 29 [2020-09-11 23:42:11,511 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:42:11,511 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 [2020-09-11 23:42:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:42:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:42:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:42:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:42:11,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:42:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:42:11,512 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:42:11,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:42:11,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:42:11,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:42:11,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 23:42:11,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:42:11 BasicIcfg [2020-09-11 23:42:11,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:42:11,520 INFO L168 Benchmark]: Toolchain (without parser) took 5591.01 ms. Allocated memory was 147.8 MB in the beginning and 282.6 MB in the end (delta: 134.7 MB). Free memory was 103.0 MB in the beginning and 227.2 MB in the end (delta: -124.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:11,521 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:42:11,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 161.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:11,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:11,523 INFO L168 Benchmark]: Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:11,524 INFO L168 Benchmark]: RCFGBuilder took 528.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-11 23:42:11,525 INFO L168 Benchmark]: TraceAbstraction took 4060.08 ms. Allocated memory was 203.9 MB in the beginning and 282.6 MB in the end (delta: 78.6 MB). Free memory was 134.7 MB in the beginning and 227.2 MB in the end (delta: -92.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:42:11,528 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 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 869.77 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 102.3 MB in the beginning and 161.3 MB in the end (delta: -59.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 203.9 MB. Free memory was 161.3 MB in the beginning and 159.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.93 ms. Allocated memory is still 203.9 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 528.10 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 135.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4060.08 ms. Allocated memory was 203.9 MB in the beginning and 282.6 MB in the end (delta: 78.6 MB). Free memory was 134.7 MB in the beginning and 227.2 MB in the end (delta: -92.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 26 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 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: 3.9s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 214 SDtfs, 135 SDslu, 261 SDs, 0 SdLazy, 142 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s 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, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...